./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/forester-heap/dll-circular-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) 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_a0e3dd51-93d0-43af-94e3-3d36b7d5bd22/bin/ukojak-verify-Qdu7aM0XO9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e3dd51-93d0-43af-94e3-3d36b7d5bd22/bin/ukojak-verify-Qdu7aM0XO9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e3dd51-93d0-43af-94e3-3d36b7d5bd22/bin/ukojak-verify-Qdu7aM0XO9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e3dd51-93d0-43af-94e3-3d36b7d5bd22/bin/ukojak-verify-Qdu7aM0XO9/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-circular-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e3dd51-93d0-43af-94e3-3d36b7d5bd22/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-MemCleanup-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e3dd51-93d0-43af-94e3-3d36b7d5bd22/bin/ukojak-verify-Qdu7aM0XO9 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --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 [2023-12-02 21:22:28,849 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 21:22:28,913 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e3dd51-93d0-43af-94e3-3d36b7d5bd22/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-MemCleanup-32bit-Kojak_Default.epf [2023-12-02 21:22:28,917 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 21:22:28,918 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-12-02 21:22:28,939 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 21:22:28,940 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 21:22:28,941 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 21:22:28,941 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 21:22:28,942 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 21:22:28,942 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 21:22:28,943 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 21:22:28,943 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 21:22:28,944 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 21:22:28,944 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 21:22:28,945 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 21:22:28,945 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 21:22:28,946 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 21:22:28,946 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 21:22:28,947 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 21:22:28,947 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 21:22:28,952 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 21:22:28,952 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 21:22:28,953 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-12-02 21:22:28,953 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-12-02 21:22:28,954 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-12-02 21:22:28,954 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 21:22:28,954 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-02 21:22:28,955 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 21:22:28,955 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 21:22:28,955 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-12-02 21:22:28,956 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 21:22:28,956 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_a0e3dd51-93d0-43af-94e3-3d36b7d5bd22/bin/ukojak-verify-Qdu7aM0XO9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e3dd51-93d0-43af-94e3-3d36b7d5bd22/bin/ukojak-verify-Qdu7aM0XO9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b74df92940ca0e86c8c02c3eca1e89fb6c9c9c1248a25cd764acf39f7727180 [2023-12-02 21:22:29,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 21:22:29,187 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 21:22:29,190 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 21:22:29,191 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 21:22:29,192 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 21:22:29,193 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e3dd51-93d0-43af-94e3-3d36b7d5bd22/bin/ukojak-verify-Qdu7aM0XO9/../../sv-benchmarks/c/forester-heap/dll-circular-1.i [2023-12-02 21:22:31,880 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 21:22:32,103 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 21:22:32,104 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e3dd51-93d0-43af-94e3-3d36b7d5bd22/sv-benchmarks/c/forester-heap/dll-circular-1.i [2023-12-02 21:22:32,118 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e3dd51-93d0-43af-94e3-3d36b7d5bd22/bin/ukojak-verify-Qdu7aM0XO9/data/66735980e/b18a578ebb874ee9a55d3deb775e7dd6/FLAGb43aa7906 [2023-12-02 21:22:32,130 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e3dd51-93d0-43af-94e3-3d36b7d5bd22/bin/ukojak-verify-Qdu7aM0XO9/data/66735980e/b18a578ebb874ee9a55d3deb775e7dd6 [2023-12-02 21:22:32,132 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 21:22:32,133 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 21:22:32,134 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 21:22:32,135 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 21:22:32,138 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 21:22:32,139 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:22:32" (1/1) ... [2023-12-02 21:22:32,140 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b641b29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:22:32, skipping insertion in model container [2023-12-02 21:22:32,140 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:22:32" (1/1) ... [2023-12-02 21:22:32,185 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 21:22:32,425 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 21:22:32,433 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 21:22:32,472 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 21:22:32,498 INFO L206 MainTranslator]: Completed translation [2023-12-02 21:22:32,498 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:22:32 WrapperNode [2023-12-02 21:22:32,498 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 21:22:32,499 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 21:22:32,500 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 21:22:32,500 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 21:22:32,505 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:22:32" (1/1) ... [2023-12-02 21:22:32,517 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:22:32" (1/1) ... [2023-12-02 21:22:32,537 INFO L138 Inliner]: procedures = 119, calls = 33, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 126 [2023-12-02 21:22:32,538 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 21:22:32,538 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 21:22:32,539 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 21:22:32,539 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 21:22:32,546 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:22:32" (1/1) ... [2023-12-02 21:22:32,546 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:22:32" (1/1) ... [2023-12-02 21:22:32,550 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:22:32" (1/1) ... [2023-12-02 21:22:32,550 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:22:32" (1/1) ... [2023-12-02 21:22:32,558 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:22:32" (1/1) ... [2023-12-02 21:22:32,562 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:22:32" (1/1) ... [2023-12-02 21:22:32,564 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:22:32" (1/1) ... [2023-12-02 21:22:32,566 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:22:32" (1/1) ... [2023-12-02 21:22:32,569 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 21:22:32,570 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 21:22:32,570 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 21:22:32,571 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 21:22:32,571 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:22:32" (1/1) ... [2023-12-02 21:22:32,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-02 21:22:32,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e3dd51-93d0-43af-94e3-3d36b7d5bd22/bin/ukojak-verify-Qdu7aM0XO9/z3 [2023-12-02 21:22:32,595 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e3dd51-93d0-43af-94e3-3d36b7d5bd22/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-12-02 21:22:32,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e3dd51-93d0-43af-94e3-3d36b7d5bd22/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-12-02 21:22:32,637 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 21:22:32,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 21:22:32,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 21:22:32,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 21:22:32,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 21:22:32,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 21:22:32,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 21:22:32,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 21:22:32,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 21:22:32,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 21:22:32,731 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 21:22:32,733 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 21:22:32,895 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 21:22:32,927 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 21:22:32,928 INFO L309 CfgBuilder]: Removed 9 assume(true) statements. [2023-12-02 21:22:32,929 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:22:32 BoogieIcfgContainer [2023-12-02 21:22:32,930 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 21:22:32,931 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-12-02 21:22:32,931 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-12-02 21:22:32,941 INFO L274 PluginConnector]: CodeCheck initialized [2023-12-02 21:22:32,941 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:22:32" (1/1) ... [2023-12-02 21:22:32,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 21:22:32,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-02 21:22:32,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 37 states and 57 transitions. [2023-12-02 21:22:32,995 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 57 transitions. [2023-12-02 21:22:32,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 21:22:32,997 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-02 21:22:32,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 21:22:33,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 21:22:33,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 21:22:33,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-02 21:22:33,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 36 states and 50 transitions. [2023-12-02 21:22:33,186 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 50 transitions. [2023-12-02 21:22:33,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 21:22:33,187 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-02 21:22:33,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 21:22:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 21:22:33,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 21:22:33,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-02 21:22:33,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 40 states and 58 transitions. [2023-12-02 21:22:33,516 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 58 transitions. [2023-12-02 21:22:33,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 21:22:33,516 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-02 21:22:33,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 21:22:33,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 21:22:33,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 21:22:33,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-02 21:22:33,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 43 states and 62 transitions. [2023-12-02 21:22:33,842 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 62 transitions. [2023-12-02 21:22:33,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-02 21:22:33,845 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-02 21:22:33,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 21:22:33,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 21:22:34,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 21:22:34,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-02 21:22:34,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 43 states and 61 transitions. [2023-12-02 21:22:34,038 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 61 transitions. [2023-12-02 21:22:34,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 21:22:34,039 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-02 21:22:34,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 21:22:34,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 21:22:34,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 21:22:34,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-02 21:22:34,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 47 states and 69 transitions. [2023-12-02 21:22:34,324 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 69 transitions. [2023-12-02 21:22:34,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 21:22:34,325 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-02 21:22:34,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 21:22:34,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 21:22:34,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 21:22:34,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-02 21:22:34,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 47 states and 67 transitions. [2023-12-02 21:22:34,354 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 67 transitions. [2023-12-02 21:22:34,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 21:22:34,355 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-02 21:22:34,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 21:22:34,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 21:22:34,380 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 21:22:34,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 21:22:34,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 21:22:34,455 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 21:22:34,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 21:22:34,487 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 7 iterations. [2023-12-02 21:22:34,511 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem8 could not be translated [2023-12-02 21:22:34,512 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem13 could not be translated [2023-12-02 21:22:34,513 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem9 [2023-12-02 21:22:34,513 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem10 could not be translated [2023-12-02 21:22:34,513 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem11 [2023-12-02 21:22:34,513 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short14 could not be translated [2023-12-02 21:22:34,514 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem12 could not be translated [2023-12-02 21:22:34,518 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 02.12 09:22:34 ImpRootNode [2023-12-02 21:22:34,518 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-12-02 21:22:34,519 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 21:22:34,519 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 21:22:34,519 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 21:22:34,519 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:22:32" (3/4) ... [2023-12-02 21:22:34,520 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-12-02 21:22:34,524 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem8 could not be translated [2023-12-02 21:22:34,525 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem12 could not be translated [2023-12-02 21:22:34,525 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem9 [2023-12-02 21:22:34,525 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem11 [2023-12-02 21:22:34,525 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short14 could not be translated [2023-12-02 21:22:34,525 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem13 could not be translated [2023-12-02 21:22:34,525 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem10 could not be translated [2023-12-02 21:22:34,559 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e3dd51-93d0-43af-94e3-3d36b7d5bd22/bin/ukojak-verify-Qdu7aM0XO9/witness.graphml [2023-12-02 21:22:34,559 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 21:22:34,560 INFO L158 Benchmark]: Toolchain (without parser) took 2426.71ms. Allocated memory is still 180.4MB. Free memory was 137.1MB in the beginning and 75.6MB in the end (delta: 61.4MB). Peak memory consumption was 64.2MB. Max. memory is 16.1GB. [2023-12-02 21:22:34,560 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 111.1MB. Free memory is still 59.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 21:22:34,561 INFO L158 Benchmark]: CACSL2BoogieTranslator took 364.22ms. Allocated memory is still 180.4MB. Free memory was 137.1MB in the beginning and 119.5MB in the end (delta: 17.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-12-02 21:22:34,561 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.49ms. Allocated memory is still 180.4MB. Free memory was 119.5MB in the beginning and 117.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 21:22:34,562 INFO L158 Benchmark]: Boogie Preprocessor took 30.88ms. Allocated memory is still 180.4MB. Free memory was 117.4MB in the beginning and 115.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 21:22:34,562 INFO L158 Benchmark]: RCFGBuilder took 359.55ms. Allocated memory is still 180.4MB. Free memory was 115.8MB in the beginning and 99.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-12-02 21:22:34,563 INFO L158 Benchmark]: CodeCheck took 1587.69ms. Allocated memory is still 180.4MB. Free memory was 99.0MB in the beginning and 78.8MB in the end (delta: 20.2MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. [2023-12-02 21:22:34,563 INFO L158 Benchmark]: Witness Printer took 40.65ms. Allocated memory is still 180.4MB. Free memory was 77.7MB in the beginning and 75.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 21:22:34,566 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, 37 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 1.5s, OverallIterations: 7, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 286 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 64 mSDsluCounter, 250 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 136 mSDsCounter, 45 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 136 IncrementalHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 45 mSolverCounterUnsat, 114 mSDtfsCounter, 136 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 397 GetRequests, 375 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 169 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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: 985]: not all allocated memory was freed not all allocated memory was freed 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={25192:0}, state=1, x={25192:0}] [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={25192:0}, state=1, x={25192:0}] [L1032] EXPR x->data VAL [head={25192:0}, state=1, x={25192:0}] [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={25192:0}, state=1, x={25192:0}] [L1034] COND TRUE !(x->next->data != 0 && x->data > x->next->data) [L1034] CALL reach_error() [L985] COND FALSE !(0) [L985] __assert_fail ("0", "dll-circular-1.c", 14, __extension__ __PRETTY_FUNCTION__) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 111.1MB. Free memory is still 59.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 364.22ms. Allocated memory is still 180.4MB. Free memory was 137.1MB in the beginning and 119.5MB in the end (delta: 17.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.49ms. Allocated memory is still 180.4MB. Free memory was 119.5MB in the beginning and 117.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.88ms. Allocated memory is still 180.4MB. Free memory was 117.4MB in the beginning and 115.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 359.55ms. Allocated memory is still 180.4MB. Free memory was 115.8MB in the beginning and 99.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 1587.69ms. Allocated memory is still 180.4MB. Free memory was 99.0MB in the beginning and 78.8MB in the end (delta: 20.2MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. * Witness Printer took 40.65ms. Allocated memory is still 180.4MB. Free memory was 77.7MB in the beginning and 75.6MB in the end (delta: 2.1MB). 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~mem13 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem9 - 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: IdentifierExpression #t~short14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem12 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: unknown boogie variable #t~mem9 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem11 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short14 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 The program execution was not completely translated back. RESULT: Ultimate proved your program to be incorrect! [2023-12-02 21:22:34,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e3dd51-93d0-43af-94e3-3d36b7d5bd22/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup)