./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb1aab-1502-4c96-b6f1-255122779153/bin/ukojak-verify-Qdu7aM0XO9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb1aab-1502-4c96-b6f1-255122779153/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_7cfb1aab-1502-4c96-b6f1-255122779153/bin/ukojak-verify-Qdu7aM0XO9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb1aab-1502-4c96-b6f1-255122779153/bin/ukojak-verify-Qdu7aM0XO9/config/KojakReach.xml -i ../../sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb1aab-1502-4c96-b6f1-255122779153/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Overflow-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb1aab-1502-4c96-b6f1-255122779153/bin/ukojak-verify-Qdu7aM0XO9 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7887c90df48e0e32a16c0ae4217eb11a41b3b1af1e02493e847dc25239198c19 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 21:53:31,705 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 21:53:31,767 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb1aab-1502-4c96-b6f1-255122779153/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Overflow-32bit-Kojak_Default.epf [2023-12-02 21:53:31,772 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 21:53:31,772 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-12-02 21:53:31,794 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 21:53:31,795 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 21:53:31,796 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-12-02 21:53:31,797 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 21:53:31,797 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 21:53:31,798 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 21:53:31,798 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 21:53:31,799 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 21:53:31,799 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 21:53:31,800 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 21:53:31,800 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 21:53:31,801 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 21:53:31,801 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 21:53:31,802 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 21:53:31,802 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 21:53:31,803 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 21:53:31,803 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 21:53:31,804 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 21:53:31,804 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 21:53:31,804 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-12-02 21:53:31,805 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-12-02 21:53:31,805 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-12-02 21:53:31,805 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 21:53:31,806 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-02 21:53:31,806 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 21:53:31,806 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 21:53:31,807 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 21:53:31,807 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-12-02 21:53:31,807 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 21:53:31,807 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 21:53:31,808 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_7cfb1aab-1502-4c96-b6f1-255122779153/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb1aab-1502-4c96-b6f1-255122779153/bin/ukojak-verify-Qdu7aM0XO9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7887c90df48e0e32a16c0ae4217eb11a41b3b1af1e02493e847dc25239198c19 [2023-12-02 21:53:32,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 21:53:32,049 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 21:53:32,051 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 21:53:32,053 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 21:53:32,053 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 21:53:32,055 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb1aab-1502-4c96-b6f1-255122779153/bin/ukojak-verify-Qdu7aM0XO9/../../sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i [2023-12-02 21:53:34,857 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 21:53:35,078 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 21:53:35,079 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb1aab-1502-4c96-b6f1-255122779153/sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i [2023-12-02 21:53:35,093 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb1aab-1502-4c96-b6f1-255122779153/bin/ukojak-verify-Qdu7aM0XO9/data/792fd52b2/b4008549b89143d0986483493f33756b/FLAG49a9e5563 [2023-12-02 21:53:35,108 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb1aab-1502-4c96-b6f1-255122779153/bin/ukojak-verify-Qdu7aM0XO9/data/792fd52b2/b4008549b89143d0986483493f33756b [2023-12-02 21:53:35,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 21:53:35,113 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 21:53:35,114 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 21:53:35,114 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 21:53:35,119 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 21:53:35,120 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:53:35" (1/1) ... [2023-12-02 21:53:35,121 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c5e65c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:53:35, skipping insertion in model container [2023-12-02 21:53:35,122 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:53:35" (1/1) ... [2023-12-02 21:53:35,164 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 21:53:35,432 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 21:53:35,441 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 21:53:35,482 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 21:53:35,509 INFO L206 MainTranslator]: Completed translation [2023-12-02 21:53:35,509 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:53:35 WrapperNode [2023-12-02 21:53:35,509 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 21:53:35,510 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 21:53:35,510 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 21:53:35,511 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 21:53:35,516 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:53:35" (1/1) ... [2023-12-02 21:53:35,530 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:53:35" (1/1) ... [2023-12-02 21:53:35,550 INFO L138 Inliner]: procedures = 123, calls = 26, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 117 [2023-12-02 21:53:35,551 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 21:53:35,551 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 21:53:35,552 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 21:53:35,552 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 21:53:35,562 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:53:35" (1/1) ... [2023-12-02 21:53:35,563 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:53:35" (1/1) ... [2023-12-02 21:53:35,566 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:53:35" (1/1) ... [2023-12-02 21:53:35,567 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:53:35" (1/1) ... [2023-12-02 21:53:35,574 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:53:35" (1/1) ... [2023-12-02 21:53:35,578 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:53:35" (1/1) ... [2023-12-02 21:53:35,580 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:53:35" (1/1) ... [2023-12-02 21:53:35,582 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:53:35" (1/1) ... [2023-12-02 21:53:35,585 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 21:53:35,586 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 21:53:35,586 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 21:53:35,586 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 21:53:35,587 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:53:35" (1/1) ... [2023-12-02 21:53:35,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-02 21:53:35,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb1aab-1502-4c96-b6f1-255122779153/bin/ukojak-verify-Qdu7aM0XO9/z3 [2023-12-02 21:53:35,616 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb1aab-1502-4c96-b6f1-255122779153/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-12-02 21:53:35,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb1aab-1502-4c96-b6f1-255122779153/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-12-02 21:53:35,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 21:53:35,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 21:53:35,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 21:53:35,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 21:53:35,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 21:53:35,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 21:53:35,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 21:53:35,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 21:53:35,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 21:53:35,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 21:53:35,748 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 21:53:35,750 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 21:53:35,913 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 21:53:36,000 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 21:53:36,001 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-02 21:53:36,002 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:53:36 BoogieIcfgContainer [2023-12-02 21:53:36,002 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 21:53:36,003 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-12-02 21:53:36,004 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-12-02 21:53:36,012 INFO L274 PluginConnector]: CodeCheck initialized [2023-12-02 21:53:36,012 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:53:36" (1/1) ... [2023-12-02 21:53:36,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 21:53:36,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-02 21:53:36,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 16 states and 22 transitions. [2023-12-02 21:53:36,059 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 22 transitions. [2023-12-02 21:53:36,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-02 21:53:36,061 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-02 21:53:36,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 21:53:36,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 21:53:36,373 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 21:53:36,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-02 21:53:36,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 15 states and 21 transitions. [2023-12-02 21:53:36,549 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 21 transitions. [2023-12-02 21:53:36,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 21:53:36,550 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-02 21:53:36,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 21:53:36,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 21:53:36,689 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 21:53:36,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-02 21:53:36,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 14 states and 20 transitions. [2023-12-02 21:53:36,926 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 20 transitions. [2023-12-02 21:53:36,926 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 21:53:36,927 WARN L420 CodeCheckObserver]: This Program is SAFE, Check terminated with 3 iterations. [2023-12-02 21:53:36,935 INFO L751 CodeCheckObserver]: All specifications hold 2 specifications checked. All of them hold [2023-12-02 21:53:36,958 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-12-02 21:53:36,962 INFO L560 CodeCheckObserver]: Invariant with dag size 3 [2023-12-02 21:53:36,965 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-12-02 21:53:36,965 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-12-02 21:53:36,965 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-12-02 21:53:36,966 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-12-02 21:53:36,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 02.12 09:53:36 ImpRootNode [2023-12-02 21:53:36,966 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-12-02 21:53:36,967 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 21:53:36,967 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 21:53:36,968 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 21:53:36,968 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:53:36" (3/4) ... [2023-12-02 21:53:36,970 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 21:53:36,979 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2023-12-02 21:53:36,980 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-12-02 21:53:36,980 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-12-02 21:53:36,981 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 21:53:37,082 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb1aab-1502-4c96-b6f1-255122779153/bin/ukojak-verify-Qdu7aM0XO9/witness.graphml [2023-12-02 21:53:37,082 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb1aab-1502-4c96-b6f1-255122779153/bin/ukojak-verify-Qdu7aM0XO9/witness.yml [2023-12-02 21:53:37,083 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 21:53:37,084 INFO L158 Benchmark]: Toolchain (without parser) took 1970.80ms. Allocated memory is still 167.8MB. Free memory was 126.5MB in the beginning and 99.5MB in the end (delta: 27.0MB). Peak memory consumption was 30.3MB. Max. memory is 16.1GB. [2023-12-02 21:53:37,084 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 102.8MB. Free memory is still 57.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 21:53:37,084 INFO L158 Benchmark]: CACSL2BoogieTranslator took 395.52ms. Allocated memory is still 167.8MB. Free memory was 126.4MB in the beginning and 109.0MB in the end (delta: 17.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-12-02 21:53:37,085 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.48ms. Allocated memory is still 167.8MB. Free memory was 109.0MB in the beginning and 107.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 21:53:37,085 INFO L158 Benchmark]: Boogie Preprocessor took 33.82ms. Allocated memory is still 167.8MB. Free memory was 107.0MB in the beginning and 105.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 21:53:37,085 INFO L158 Benchmark]: RCFGBuilder took 416.62ms. Allocated memory is still 167.8MB. Free memory was 105.4MB in the beginning and 84.5MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-12-02 21:53:37,086 INFO L158 Benchmark]: CodeCheck took 963.01ms. Allocated memory is still 167.8MB. Free memory was 84.5MB in the beginning and 105.6MB in the end (delta: -21.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 21:53:37,086 INFO L158 Benchmark]: Witness Printer took 115.67ms. Allocated memory is still 167.8MB. Free memory was 104.7MB in the beginning and 99.5MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-12-02 21:53:37,088 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, 16 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 3, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 41 IncrementalHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 10 mSDtfsCounter, 41 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 19 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 - PositiveResult [Line: 594]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 594]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 576]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 580]: Loop Invariant Derived loop invariant: (len <= 5) - InvariantResult [Line: 601]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 598]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 607]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 598]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 102.8MB. Free memory is still 57.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 395.52ms. Allocated memory is still 167.8MB. Free memory was 126.4MB in the beginning and 109.0MB in the end (delta: 17.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.48ms. Allocated memory is still 167.8MB. Free memory was 109.0MB in the beginning and 107.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.82ms. Allocated memory is still 167.8MB. Free memory was 107.0MB in the beginning and 105.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 416.62ms. Allocated memory is still 167.8MB. Free memory was 105.4MB in the beginning and 84.5MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * CodeCheck took 963.01ms. Allocated memory is still 167.8MB. Free memory was 84.5MB in the beginning and 105.6MB in the end (delta: -21.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 115.67ms. Allocated memory is still 167.8MB. Free memory was 104.7MB in the beginning and 99.5MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be correct! [2023-12-02 21:53:37,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb1aab-1502-4c96-b6f1-255122779153/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 Result: TRUE