./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-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_79199a98-843b-4560-8409-795623d7b8f1/bin/ukojak-verify-Qdu7aM0XO9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79199a98-843b-4560-8409-795623d7b8f1/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_79199a98-843b-4560-8409-795623d7b8f1/bin/ukojak-verify-Qdu7aM0XO9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79199a98-843b-4560-8409-795623d7b8f1/bin/ukojak-verify-Qdu7aM0XO9/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79199a98-843b-4560-8409-795623d7b8f1/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_79199a98-843b-4560-8409-795623d7b8f1/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 f8d14145608efc0a8f321a178564faff63399ecbab28641c0c2971fec318068f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 23:08:42,708 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 23:08:42,772 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79199a98-843b-4560-8409-795623d7b8f1/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-MemCleanup-32bit-Kojak_Default.epf [2023-12-02 23:08:42,777 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 23:08:42,777 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-12-02 23:08:42,801 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 23:08:42,802 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 23:08:42,802 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 23:08:42,803 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 23:08:42,803 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 23:08:42,804 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 23:08:42,804 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 23:08:42,805 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 23:08:42,805 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 23:08:42,806 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 23:08:42,806 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 23:08:42,807 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 23:08:42,807 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 23:08:42,808 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 23:08:42,808 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 23:08:42,809 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 23:08:42,809 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 23:08:42,810 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 23:08:42,810 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-12-02 23:08:42,811 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-12-02 23:08:42,811 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-12-02 23:08:42,811 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 23:08:42,812 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-02 23:08:42,812 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 23:08:42,813 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 23:08:42,813 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-12-02 23:08:42,814 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 23:08:42,814 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_79199a98-843b-4560-8409-795623d7b8f1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79199a98-843b-4560-8409-795623d7b8f1/bin/ukojak-verify-Qdu7aM0XO9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f8d14145608efc0a8f321a178564faff63399ecbab28641c0c2971fec318068f [2023-12-02 23:08:43,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 23:08:43,048 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 23:08:43,051 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 23:08:43,052 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 23:08:43,053 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 23:08:43,054 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79199a98-843b-4560-8409-795623d7b8f1/bin/ukojak-verify-Qdu7aM0XO9/../../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i [2023-12-02 23:08:45,809 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 23:08:46,030 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 23:08:46,031 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79199a98-843b-4560-8409-795623d7b8f1/sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i [2023-12-02 23:08:46,044 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79199a98-843b-4560-8409-795623d7b8f1/bin/ukojak-verify-Qdu7aM0XO9/data/7726c0e3a/ce176dfd9bde48078231e0c5edda807d/FLAGa9329d5dc [2023-12-02 23:08:46,057 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79199a98-843b-4560-8409-795623d7b8f1/bin/ukojak-verify-Qdu7aM0XO9/data/7726c0e3a/ce176dfd9bde48078231e0c5edda807d [2023-12-02 23:08:46,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 23:08:46,060 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 23:08:46,062 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 23:08:46,062 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 23:08:46,066 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 23:08:46,067 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:08:46" (1/1) ... [2023-12-02 23:08:46,068 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c227e69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:08:46, skipping insertion in model container [2023-12-02 23:08:46,068 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:08:46" (1/1) ... [2023-12-02 23:08:46,115 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 23:08:46,370 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 23:08:46,380 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 23:08:46,458 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 23:08:46,486 INFO L206 MainTranslator]: Completed translation [2023-12-02 23:08:46,486 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:08:46 WrapperNode [2023-12-02 23:08:46,486 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 23:08:46,487 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 23:08:46,488 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 23:08:46,488 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 23:08:46,493 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:08:46" (1/1) ... [2023-12-02 23:08:46,508 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:08:46" (1/1) ... [2023-12-02 23:08:46,547 INFO L138 Inliner]: procedures = 129, calls = 80, calls flagged for inlining = 25, calls inlined = 58, statements flattened = 540 [2023-12-02 23:08:46,548 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 23:08:46,548 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 23:08:46,548 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 23:08:46,549 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 23:08:46,558 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:08:46" (1/1) ... [2023-12-02 23:08:46,558 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:08:46" (1/1) ... [2023-12-02 23:08:46,565 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:08:46" (1/1) ... [2023-12-02 23:08:46,566 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:08:46" (1/1) ... [2023-12-02 23:08:46,583 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:08:46" (1/1) ... [2023-12-02 23:08:46,594 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:08:46" (1/1) ... [2023-12-02 23:08:46,598 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:08:46" (1/1) ... [2023-12-02 23:08:46,601 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:08:46" (1/1) ... [2023-12-02 23:08:46,608 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 23:08:46,609 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 23:08:46,609 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 23:08:46,609 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 23:08:46,610 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:08:46" (1/1) ... [2023-12-02 23:08:46,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-02 23:08:46,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79199a98-843b-4560-8409-795623d7b8f1/bin/ukojak-verify-Qdu7aM0XO9/z3 [2023-12-02 23:08:46,636 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79199a98-843b-4560-8409-795623d7b8f1/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-12-02 23:08:46,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79199a98-843b-4560-8409-795623d7b8f1/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-12-02 23:08:46,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 23:08:46,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 23:08:46,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 23:08:46,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 23:08:46,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 23:08:46,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 23:08:46,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 23:08:46,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 23:08:46,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 23:08:46,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 23:08:46,778 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 23:08:46,780 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 23:08:47,202 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 23:08:47,343 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 23:08:47,343 INFO L309 CfgBuilder]: Removed 61 assume(true) statements. [2023-12-02 23:08:47,345 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:08:47 BoogieIcfgContainer [2023-12-02 23:08:47,345 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 23:08:47,346 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-12-02 23:08:47,346 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-12-02 23:08:47,353 INFO L274 PluginConnector]: CodeCheck initialized [2023-12-02 23:08:47,353 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:08:47" (1/1) ... [2023-12-02 23:08:47,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 23:08:47,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-02 23:08:47,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 164 states and 264 transitions. [2023-12-02 23:08:47,411 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 264 transitions. [2023-12-02 23:08:47,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 23:08:47,413 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-02 23:08:47,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 23:08:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 23:08:47,557 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 23:08:47,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-02 23:08:47,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 163 states and 255 transitions. [2023-12-02 23:08:47,606 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 255 transitions. [2023-12-02 23:08:47,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-02 23:08:47,607 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-02 23:08:47,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 23:08:47,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 23:08:48,551 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 23:08:48,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-02 23:08:48,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 168 states and 264 transitions. [2023-12-02 23:08:48,879 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 264 transitions. [2023-12-02 23:08:48,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 23:08:48,880 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-02 23:08:48,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 23:08:48,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 23:08:49,615 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 23:08:51,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-02 23:08:51,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 174 states and 274 transitions. [2023-12-02 23:08:51,405 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 274 transitions. [2023-12-02 23:08:51,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 23:08:51,408 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-02 23:08:51,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 23:08:51,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 23:08:51,937 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 23:08:52,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-02 23:08:52,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 175 states and 275 transitions. [2023-12-02 23:08:52,214 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 275 transitions. [2023-12-02 23:08:52,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 23:08:52,215 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-02 23:08:52,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 23:08:52,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 23:08:52,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 23:08:53,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-02 23:08:53,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 156 states and 244 transitions. [2023-12-02 23:08:53,460 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 244 transitions. [2023-12-02 23:08:53,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 23:08:53,461 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-02 23:08:53,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 23:08:53,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 23:08:53,517 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 23:08:53,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 23:08:53,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 23:08:53,875 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 23:08:54,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 23:08:54,072 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 6 iterations. [2023-12-02 23:08:54,111 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 02.12 11:08:54 ImpRootNode [2023-12-02 23:08:54,111 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-12-02 23:08:54,111 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 23:08:54,111 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 23:08:54,112 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 23:08:54,112 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:08:47" (3/4) ... [2023-12-02 23:08:54,113 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-12-02 23:08:54,166 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79199a98-843b-4560-8409-795623d7b8f1/bin/ukojak-verify-Qdu7aM0XO9/witness.graphml [2023-12-02 23:08:54,166 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 23:08:54,167 INFO L158 Benchmark]: Toolchain (without parser) took 8106.87ms. Allocated memory was 136.3MB in the beginning and 222.3MB in the end (delta: 86.0MB). Free memory was 77.4MB in the beginning and 157.5MB in the end (delta: -80.1MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2023-12-02 23:08:54,168 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 94.4MB. Free memory is still 49.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 23:08:54,168 INFO L158 Benchmark]: CACSL2BoogieTranslator took 425.15ms. Allocated memory is still 136.3MB. Free memory was 77.2MB in the beginning and 104.0MB in the end (delta: -26.8MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. [2023-12-02 23:08:54,169 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.38ms. Allocated memory is still 136.3MB. Free memory was 104.0MB in the beginning and 100.7MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 23:08:54,169 INFO L158 Benchmark]: Boogie Preprocessor took 59.94ms. Allocated memory is still 136.3MB. Free memory was 100.7MB in the beginning and 96.9MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 23:08:54,170 INFO L158 Benchmark]: RCFGBuilder took 735.80ms. Allocated memory is still 136.3MB. Free memory was 96.9MB in the beginning and 91.5MB in the end (delta: 5.4MB). Peak memory consumption was 46.4MB. Max. memory is 16.1GB. [2023-12-02 23:08:54,170 INFO L158 Benchmark]: CodeCheck took 6765.19ms. Allocated memory was 136.3MB in the beginning and 222.3MB in the end (delta: 86.0MB). Free memory was 91.5MB in the beginning and 160.6MB in the end (delta: -69.1MB). Peak memory consumption was 17.2MB. Max. memory is 16.1GB. [2023-12-02 23:08:54,171 INFO L158 Benchmark]: Witness Printer took 55.26ms. Allocated memory is still 222.3MB. Free memory was 160.6MB in the beginning and 157.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 23:08:54,173 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, 164 locations, 21 error locations. Started 1 CEGAR loops. OverallTime: 6.7s, OverallIterations: 6, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 359 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 110 mSDsluCounter, 291 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 192 mSDsCounter, 71 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 334 IncrementalHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 71 mSolverCounterUnsat, 99 mSDtfsCounter, 334 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 684 GetRequests, 615 SyntacticMatches, 9 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 1108 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 2/4 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: 12]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L639] const struct node *p1, *p2; [L640] CALL, EXPR create_sll(&p1, &p2) [L588] struct node *list = ((void *)0); VAL [list={53722:0}, pp1={53721:0}, pp1={53721:0}, pp2={53723:0}, pp2={53723:0}] [L590] CALL chain_node(&list) [L582] CALL, EXPR alloc_node() [L573] struct node *ptr = malloc(sizeof *ptr); [L574] COND FALSE !(!ptr) [L576] ptr->next = ((void *)0) [L577] ptr->prev = ((void *)0) [L578] return ptr; [L582] RET, EXPR alloc_node() [L582] struct node *node = alloc_node(); [L583] EXPR \read(**ppnode) [L583] node->next = *ppnode [L584] *ppnode = node [L590] RET chain_node(&list) [L591] COND FALSE !(__VERIFIER_nondet_int()) [L592] EXPR \read(*list) [L592] *pp2 = list [L593] COND FALSE !(__VERIFIER_nondet_int()) [L595] EXPR \read(*list) [L595] *pp1 = list [L597] CALL chain_node(&list) [L582] CALL, EXPR alloc_node() [L573] struct node *ptr = malloc(sizeof *ptr); [L574] COND FALSE !(!ptr) [L576] ptr->next = ((void *)0) [L577] ptr->prev = ((void *)0) [L578] return ptr; [L582] RET, EXPR alloc_node() [L582] struct node *node = alloc_node(); [L583] EXPR \read(**ppnode) [L583] node->next = *ppnode [L584] *ppnode = node [L597] RET chain_node(&list) [L598] COND FALSE !(__VERIFIER_nondet_int()) [L599] EXPR \read(*list) [L599] return list; [L588] struct node *list = ((void *)0); [L599] return list; [L640] RET, EXPR create_sll(&p1, &p2) [L640] struct node *list = create_sll(&p1, &p2); [L642] EXPR \read(*p1) [L642] EXPR \read(*p2) [L642] CALL check_seq_next(p1, p2) [L626] COND FALSE !(!(beg)) VAL [beg={-1:0}, beg={-1:0}, end={-1:0}, end={-1:0}] [L627] COND FALSE !(!(end)) VAL [beg={-1:0}, beg={-1:0}, end={-1:0}, end={-1:0}] [L628] EXPR beg->next [L628] beg = beg->next [L628] COND TRUE end != beg VAL [beg={-1:0}, beg={0:0}, end={-1:0}, end={-1:0}] [L629] COND TRUE !(beg) [L629] CALL fail() [L565] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "sll_to_dll_rev-1.c", 3, __extension__ __PRETTY_FUNCTION__) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 94.4MB. Free memory is still 49.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 425.15ms. Allocated memory is still 136.3MB. Free memory was 77.2MB in the beginning and 104.0MB in the end (delta: -26.8MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.38ms. Allocated memory is still 136.3MB. Free memory was 104.0MB in the beginning and 100.7MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.94ms. Allocated memory is still 136.3MB. Free memory was 100.7MB in the beginning and 96.9MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 735.80ms. Allocated memory is still 136.3MB. Free memory was 96.9MB in the beginning and 91.5MB in the end (delta: 5.4MB). Peak memory consumption was 46.4MB. Max. memory is 16.1GB. * CodeCheck took 6765.19ms. Allocated memory was 136.3MB in the beginning and 222.3MB in the end (delta: 86.0MB). Free memory was 91.5MB in the beginning and 160.6MB in the end (delta: -69.1MB). Peak memory consumption was 17.2MB. Max. memory is 16.1GB. * Witness Printer took 55.26ms. Allocated memory is still 222.3MB. Free memory was 160.6MB in the beginning and 157.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2023-12-02 23:08:54,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79199a98-843b-4560-8409-795623d7b8f1/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)