./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-regression/volatile_alias.c_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) 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_074957de-b7a6-48f8-a951-1e1235cda522/bin/ukojak-verify-afCqCEvfdi/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_074957de-b7a6-48f8-a951-1e1235cda522/bin/ukojak-verify-afCqCEvfdi/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_074957de-b7a6-48f8-a951-1e1235cda522/bin/ukojak-verify-afCqCEvfdi/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_074957de-b7a6-48f8-a951-1e1235cda522/bin/ukojak-verify-afCqCEvfdi/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-regression/volatile_alias.c_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_074957de-b7a6-48f8-a951-1e1235cda522/bin/ukojak-verify-afCqCEvfdi/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_074957de-b7a6-48f8-a951-1e1235cda522/bin/ukojak-verify-afCqCEvfdi --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f1bb79a65ae985e12740836541686d88e393fdc93f4f86744adfbdfdcbfcd51e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 22:59:11,643 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 22:59:11,729 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_074957de-b7a6-48f8-a951-1e1235cda522/bin/ukojak-verify-afCqCEvfdi/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2023-11-24 22:59:11,734 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 22:59:11,735 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-24 22:59:11,759 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 22:59:11,760 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 22:59:11,761 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 22:59:11,761 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 22:59:11,762 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 22:59:11,763 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 22:59:11,763 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 22:59:11,764 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 22:59:11,764 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 22:59:11,765 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 22:59:11,765 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 22:59:11,766 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 22:59:11,766 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 22:59:11,767 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 22:59:11,767 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 22:59:11,768 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-24 22:59:11,769 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-24 22:59:11,769 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-24 22:59:11,770 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 22:59:11,770 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 22:59:11,771 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 22:59:11,771 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 22:59:11,771 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-24 22:59:11,772 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 22:59:11,772 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_074957de-b7a6-48f8-a951-1e1235cda522/bin/ukojak-verify-afCqCEvfdi/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_074957de-b7a6-48f8-a951-1e1235cda522/bin/ukojak-verify-afCqCEvfdi Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1bb79a65ae985e12740836541686d88e393fdc93f4f86744adfbdfdcbfcd51e [2023-11-24 22:59:12,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 22:59:12,050 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 22:59:12,052 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 22:59:12,054 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 22:59:12,054 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 22:59:12,056 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_074957de-b7a6-48f8-a951-1e1235cda522/bin/ukojak-verify-afCqCEvfdi/../../sv-benchmarks/c/ldv-regression/volatile_alias.c_1.i [2023-11-24 22:59:15,277 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 22:59:15,501 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 22:59:15,502 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_074957de-b7a6-48f8-a951-1e1235cda522/sv-benchmarks/c/ldv-regression/volatile_alias.c_1.i [2023-11-24 22:59:15,510 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_074957de-b7a6-48f8-a951-1e1235cda522/bin/ukojak-verify-afCqCEvfdi/data/4e5e3fff4/7e4c39dd9afd4f5588bfa07d6e7b7e70/FLAGe9894e030 [2023-11-24 22:59:15,530 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_074957de-b7a6-48f8-a951-1e1235cda522/bin/ukojak-verify-afCqCEvfdi/data/4e5e3fff4/7e4c39dd9afd4f5588bfa07d6e7b7e70 [2023-11-24 22:59:15,536 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 22:59:15,539 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 22:59:15,542 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 22:59:15,543 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 22:59:15,547 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 22:59:15,551 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:59:15" (1/1) ... [2023-11-24 22:59:15,552 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61d8b38e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:59:15, skipping insertion in model container [2023-11-24 22:59:15,552 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:59:15" (1/1) ... [2023-11-24 22:59:15,574 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 22:59:15,781 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:59:15,792 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 22:59:15,809 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:59:15,825 INFO L206 MainTranslator]: Completed translation [2023-11-24 22:59:15,825 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:59:15 WrapperNode [2023-11-24 22:59:15,825 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 22:59:15,826 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 22:59:15,826 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 22:59:15,827 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 22:59:15,835 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:59:15" (1/1) ... [2023-11-24 22:59:15,841 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:59:15" (1/1) ... [2023-11-24 22:59:15,860 INFO L138 Inliner]: procedures = 12, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 30 [2023-11-24 22:59:15,860 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 22:59:15,861 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 22:59:15,861 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 22:59:15,862 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 22:59:15,871 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:59:15" (1/1) ... [2023-11-24 22:59:15,872 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:59:15" (1/1) ... [2023-11-24 22:59:15,887 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:59:15" (1/1) ... [2023-11-24 22:59:15,888 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:59:15" (1/1) ... [2023-11-24 22:59:15,892 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:59:15" (1/1) ... [2023-11-24 22:59:15,894 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:59:15" (1/1) ... [2023-11-24 22:59:15,895 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:59:15" (1/1) ... [2023-11-24 22:59:15,896 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:59:15" (1/1) ... [2023-11-24 22:59:15,897 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 22:59:15,898 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 22:59:15,899 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 22:59:15,899 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 22:59:15,903 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:59:15" (1/1) ... [2023-11-24 22:59:15,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 22:59:15,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_074957de-b7a6-48f8-a951-1e1235cda522/bin/ukojak-verify-afCqCEvfdi/z3 [2023-11-24 22:59:15,938 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_074957de-b7a6-48f8-a951-1e1235cda522/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-24 22:59:15,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_074957de-b7a6-48f8-a951-1e1235cda522/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-24 22:59:15,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 22:59:15,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 22:59:15,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 22:59:15,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 22:59:15,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 22:59:15,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 22:59:15,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 22:59:15,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 22:59:16,059 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 22:59:16,061 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 22:59:16,225 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 22:59:16,262 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 22:59:16,263 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 22:59:16,264 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:59:16 BoogieIcfgContainer [2023-11-24 22:59:16,265 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 22:59:16,266 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-24 22:59:16,266 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-24 22:59:16,278 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-24 22:59:16,278 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:59:16" (1/1) ... [2023-11-24 22:59:16,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:59:16,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:59:16,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2023-11-24 22:59:16,352 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2023-11-24 22:59:16,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-24 22:59:16,354 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:59:16,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:59:16,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:59:16,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:59:16,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:59:16,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2023-11-24 22:59:16,726 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2023-11-24 22:59:16,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-24 22:59:16,727 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:59:16,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:59:16,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:59:16,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:59:16,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:59:16,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2023-11-24 22:59:16,947 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2023-11-24 22:59:16,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-24 22:59:16,947 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:59:16,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:59:16,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:59:17,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:59:17,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:59:17,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2023-11-24 22:59:17,037 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2023-11-24 22:59:17,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-24 22:59:17,038 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:59:17,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:59:17,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:59:17,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:59:17,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:59:17,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2023-11-24 22:59:17,185 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2023-11-24 22:59:17,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-24 22:59:17,186 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:59:17,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:59:17,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:59:17,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:59:17,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:59:17,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2023-11-24 22:59:17,554 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2023-11-24 22:59:17,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-24 22:59:17,555 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:59:17,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:59:17,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:59:17,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:59:18,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:59:18,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2023-11-24 22:59:18,024 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-11-24 22:59:18,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-24 22:59:18,025 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:59:18,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:59:18,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:59:18,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:59:19,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:59:19,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 9 states and 8 transitions. [2023-11-24 22:59:19,019 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2023-11-24 22:59:19,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 22:59:19,019 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:59:19,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:59:19,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:59:19,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:59:20,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:59:20,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 8 states and 7 transitions. [2023-11-24 22:59:20,127 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2023-11-24 22:59:20,127 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-24 22:59:20,128 WARN L420 CodeCheckObserver]: This Program is SAFE, Check terminated with 9 iterations. [2023-11-24 22:59:20,137 INFO L751 CodeCheckObserver]: All specifications hold 8 specifications checked. All of them hold [2023-11-24 22:59:20,178 INFO L560 CodeCheckObserver]: Invariant with dag size 3 [2023-11-24 22:59:20,183 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 24.11 10:59:20 ImpRootNode [2023-11-24 22:59:20,183 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-24 22:59:20,184 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 22:59:20,184 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 22:59:20,184 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 22:59:20,185 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:59:16" (3/4) ... [2023-11-24 22:59:20,187 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-24 22:59:20,194 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-11-24 22:59:20,194 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-24 22:59:20,195 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-24 22:59:20,195 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-24 22:59:20,290 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_074957de-b7a6-48f8-a951-1e1235cda522/bin/ukojak-verify-afCqCEvfdi/witness.graphml [2023-11-24 22:59:20,294 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_074957de-b7a6-48f8-a951-1e1235cda522/bin/ukojak-verify-afCqCEvfdi/witness.yml [2023-11-24 22:59:20,294 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 22:59:20,295 INFO L158 Benchmark]: Toolchain (without parser) took 4756.03ms. Allocated memory was 134.2MB in the beginning and 199.2MB in the end (delta: 65.0MB). Free memory was 89.9MB in the beginning and 62.5MB in the end (delta: 27.4MB). Peak memory consumption was 93.2MB. Max. memory is 16.1GB. [2023-11-24 22:59:20,296 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 134.2MB. Free memory is still 79.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 22:59:20,304 INFO L158 Benchmark]: CACSL2BoogieTranslator took 283.22ms. Allocated memory is still 134.2MB. Free memory was 89.6MB in the beginning and 79.4MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-24 22:59:20,305 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.08ms. Allocated memory is still 134.2MB. Free memory was 79.4MB in the beginning and 78.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 22:59:20,305 INFO L158 Benchmark]: Boogie Preprocessor took 36.84ms. Allocated memory is still 134.2MB. Free memory was 77.8MB in the beginning and 76.9MB in the end (delta: 834.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 22:59:20,306 INFO L158 Benchmark]: RCFGBuilder took 366.23ms. Allocated memory is still 134.2MB. Free memory was 76.9MB in the beginning and 66.1MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-24 22:59:20,306 INFO L158 Benchmark]: CodeCheck took 3917.62ms. Allocated memory was 134.2MB in the beginning and 199.2MB in the end (delta: 65.0MB). Free memory was 66.1MB in the beginning and 66.6MB in the end (delta: -480.2kB). Peak memory consumption was 68.1MB. Max. memory is 16.1GB. [2023-11-24 22:59:20,307 INFO L158 Benchmark]: Witness Printer took 110.22ms. Allocated memory is still 199.2MB. Free memory was 66.6MB in the beginning and 62.5MB in the end (delta: 4.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 22:59:20,314 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, 17 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 3.8s, OverallIterations: 9, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 64 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 56 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 96 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 300 IncrementalHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 96 mSolverCounterUnsat, 2 mSDtfsCounter, 300 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 227 GetRequests, 155 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1685 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 150 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 3]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: null * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 134.2MB. Free memory is still 79.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 283.22ms. Allocated memory is still 134.2MB. Free memory was 89.6MB in the beginning and 79.4MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.08ms. Allocated memory is still 134.2MB. Free memory was 79.4MB in the beginning and 78.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 36.84ms. Allocated memory is still 134.2MB. Free memory was 77.8MB in the beginning and 76.9MB in the end (delta: 834.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 366.23ms. Allocated memory is still 134.2MB. Free memory was 76.9MB in the beginning and 66.1MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * CodeCheck took 3917.62ms. Allocated memory was 134.2MB in the beginning and 199.2MB in the end (delta: 65.0MB). Free memory was 66.1MB in the beginning and 66.6MB in the end (delta: -480.2kB). Peak memory consumption was 68.1MB. Max. memory is 16.1GB. * Witness Printer took 110.22ms. Allocated memory is still 199.2MB. Free memory was 66.6MB in the beginning and 62.5MB in the end (delta: 4.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be correct! [2023-11-24 22:59:20,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_074957de-b7a6-48f8-a951-1e1235cda522/bin/ukojak-verify-afCqCEvfdi/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