./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 cf1a7837 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_70b468b0-2d0c-49de-9949-15f669f73388/bin/ukojak-verify-0OAaufAVZV/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b468b0-2d0c-49de-9949-15f669f73388/bin/ukojak-verify-0OAaufAVZV/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b468b0-2d0c-49de-9949-15f669f73388/bin/ukojak-verify-0OAaufAVZV/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b468b0-2d0c-49de-9949-15f669f73388/bin/ukojak-verify-0OAaufAVZV/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_70b468b0-2d0c-49de-9949-15f669f73388/bin/ukojak-verify-0OAaufAVZV/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b468b0-2d0c-49de-9949-15f669f73388/bin/ukojak-verify-0OAaufAVZV --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 0.2.3-dev-cf1a783 [2023-11-11 23:59:17,530 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-11 23:59:17,661 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b468b0-2d0c-49de-9949-15f669f73388/bin/ukojak-verify-0OAaufAVZV/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2023-11-11 23:59:17,669 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-11 23:59:17,670 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-11 23:59:17,718 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-11 23:59:17,719 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-11 23:59:17,720 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-11 23:59:17,721 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-11 23:59:17,728 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-11 23:59:17,728 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-11 23:59:17,729 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-11 23:59:17,729 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-11 23:59:17,731 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-11 23:59:17,732 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-11 23:59:17,732 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-11 23:59:17,733 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-11 23:59:17,733 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-11 23:59:17,734 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-11 23:59:17,734 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-11 23:59:17,735 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-11 23:59:17,736 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-11 23:59:17,737 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-11 23:59:17,738 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-11 23:59:17,739 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-11 23:59:17,740 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-11 23:59:17,740 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-11 23:59:17,741 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-11 23:59:17,741 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_70b468b0-2d0c-49de-9949-15f669f73388/bin/ukojak-verify-0OAaufAVZV/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b468b0-2d0c-49de-9949-15f669f73388/bin/ukojak-verify-0OAaufAVZV Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1bb79a65ae985e12740836541686d88e393fdc93f4f86744adfbdfdcbfcd51e [2023-11-11 23:59:18,023 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-11 23:59:18,051 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-11 23:59:18,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-11 23:59:18,059 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-11 23:59:18,060 INFO L274 PluginConnector]: CDTParser initialized [2023-11-11 23:59:18,063 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b468b0-2d0c-49de-9949-15f669f73388/bin/ukojak-verify-0OAaufAVZV/../../sv-benchmarks/c/ldv-regression/volatile_alias.c_1.i [2023-11-11 23:59:21,321 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-11 23:59:21,512 INFO L384 CDTParser]: Found 1 translation units. [2023-11-11 23:59:21,513 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b468b0-2d0c-49de-9949-15f669f73388/sv-benchmarks/c/ldv-regression/volatile_alias.c_1.i [2023-11-11 23:59:21,521 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b468b0-2d0c-49de-9949-15f669f73388/bin/ukojak-verify-0OAaufAVZV/data/e6a15a9df/640bada20eea49b987108b9b5f6e0746/FLAG9de28f4c3 [2023-11-11 23:59:21,537 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b468b0-2d0c-49de-9949-15f669f73388/bin/ukojak-verify-0OAaufAVZV/data/e6a15a9df/640bada20eea49b987108b9b5f6e0746 [2023-11-11 23:59:21,540 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-11 23:59:21,542 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-11 23:59:21,544 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-11 23:59:21,544 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-11 23:59:21,549 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-11 23:59:21,550 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 11:59:21" (1/1) ... [2023-11-11 23:59:21,551 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ac77795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:59:21, skipping insertion in model container [2023-11-11 23:59:21,552 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 11:59:21" (1/1) ... [2023-11-11 23:59:21,572 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-11 23:59:21,776 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-11 23:59:21,786 INFO L202 MainTranslator]: Completed pre-run [2023-11-11 23:59:21,800 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-11 23:59:21,816 INFO L206 MainTranslator]: Completed translation [2023-11-11 23:59:21,817 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:59:21 WrapperNode [2023-11-11 23:59:21,817 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-11 23:59:21,818 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-11 23:59:21,819 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-11 23:59:21,819 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-11 23:59:21,826 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:59:21" (1/1) ... [2023-11-11 23:59:21,833 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:59:21" (1/1) ... [2023-11-11 23:59:21,851 INFO L138 Inliner]: procedures = 12, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 30 [2023-11-11 23:59:21,851 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-11 23:59:21,852 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-11 23:59:21,852 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-11 23:59:21,852 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-11 23:59:21,861 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:59:21" (1/1) ... [2023-11-11 23:59:21,861 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:59:21" (1/1) ... [2023-11-11 23:59:21,863 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:59:21" (1/1) ... [2023-11-11 23:59:21,864 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:59:21" (1/1) ... [2023-11-11 23:59:21,868 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:59:21" (1/1) ... [2023-11-11 23:59:21,870 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:59:21" (1/1) ... [2023-11-11 23:59:21,871 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:59:21" (1/1) ... [2023-11-11 23:59:21,872 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:59:21" (1/1) ... [2023-11-11 23:59:21,874 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-11 23:59:21,875 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-11 23:59:21,875 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-11 23:59:21,875 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-11 23:59:21,876 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:59:21" (1/1) ... [2023-11-11 23:59:21,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-11 23:59:21,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b468b0-2d0c-49de-9949-15f669f73388/bin/ukojak-verify-0OAaufAVZV/z3 [2023-11-11 23:59:21,919 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b468b0-2d0c-49de-9949-15f669f73388/bin/ukojak-verify-0OAaufAVZV/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-11 23:59:21,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b468b0-2d0c-49de-9949-15f669f73388/bin/ukojak-verify-0OAaufAVZV/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-11 23:59:21,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-11 23:59:21,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-11 23:59:21,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-11 23:59:21,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-11 23:59:21,951 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-11 23:59:21,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-11 23:59:21,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-11 23:59:21,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-11 23:59:22,026 INFO L236 CfgBuilder]: Building ICFG [2023-11-11 23:59:22,028 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-11 23:59:22,154 INFO L277 CfgBuilder]: Performing block encoding [2023-11-11 23:59:22,177 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-11 23:59:22,177 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-11 23:59:22,180 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 11:59:22 BoogieIcfgContainer [2023-11-11 23:59:22,180 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-11 23:59:22,181 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-11 23:59:22,181 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-11 23:59:22,196 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-11 23:59:22,196 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 11:59:22" (1/1) ... [2023-11-11 23:59:22,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-11 23:59:22,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:59:22,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2023-11-11 23:59:22,257 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2023-11-11 23:59:22,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-11 23:59:22,259 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:59:22,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:59:22,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:59:22,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-11 23:59:22,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:59:22,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2023-11-11 23:59:22,581 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2023-11-11 23:59:22,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-11 23:59:22,581 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:59:22,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:59:22,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:59:22,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-11 23:59:22,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:59:22,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2023-11-11 23:59:22,863 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2023-11-11 23:59:22,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-11 23:59:22,864 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:59:22,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:59:22,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:59:22,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-11 23:59:22,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:59:22,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2023-11-11 23:59:22,958 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2023-11-11 23:59:22,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-11 23:59:22,958 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:59:22,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:59:23,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:59:23,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-11 23:59:23,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:59:23,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2023-11-11 23:59:23,118 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2023-11-11 23:59:23,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-11 23:59:23,118 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:59:23,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:59:23,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:59:23,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-11 23:59:23,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:59:23,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2023-11-11 23:59:23,463 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2023-11-11 23:59:23,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-11 23:59:23,464 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:59:23,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:59:23,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:59:23,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-11 23:59:23,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:59:23,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2023-11-11 23:59:23,901 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-11-11 23:59:23,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-11 23:59:23,902 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:59:23,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:59:23,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:59:24,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-11 23:59:24,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:59:24,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 9 states and 8 transitions. [2023-11-11 23:59:24,897 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2023-11-11 23:59:24,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-11 23:59:24,898 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:59:24,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:59:24,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:59:25,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-11 23:59:25,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:59:25,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 8 states and 7 transitions. [2023-11-11 23:59:25,977 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2023-11-11 23:59:25,977 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-11 23:59:25,977 WARN L420 CodeCheckObserver]: This Program is SAFE, Check terminated with 9 iterations. [2023-11-11 23:59:25,987 INFO L753 CodeCheckObserver]: All specifications hold 8 specifications checked. All of them hold [2023-11-11 23:59:26,033 INFO L560 CodeCheckObserver]: Invariant with dag size 3 [2023-11-11 23:59:26,038 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 11.11 11:59:26 ImpRootNode [2023-11-11 23:59:26,039 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-11 23:59:26,039 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-11 23:59:26,040 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-11 23:59:26,040 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-11 23:59:26,040 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 11:59:22" (3/4) ... [2023-11-11 23:59:26,043 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-11 23:59:26,052 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-11-11 23:59:26,052 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-11 23:59:26,052 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-11 23:59:26,053 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-11 23:59:26,153 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b468b0-2d0c-49de-9949-15f669f73388/bin/ukojak-verify-0OAaufAVZV/witness.graphml [2023-11-11 23:59:26,154 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b468b0-2d0c-49de-9949-15f669f73388/bin/ukojak-verify-0OAaufAVZV/witness.yml [2023-11-11 23:59:26,155 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-11 23:59:26,156 INFO L158 Benchmark]: Toolchain (without parser) took 4613.68ms. Allocated memory is still 192.9MB. Free memory was 147.2MB in the beginning and 71.4MB in the end (delta: 75.8MB). Peak memory consumption was 79.0MB. Max. memory is 16.1GB. [2023-11-11 23:59:26,156 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 142.6MB. Free memory is still 85.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-11 23:59:26,158 INFO L158 Benchmark]: CACSL2BoogieTranslator took 273.68ms. Allocated memory is still 192.9MB. Free memory was 146.6MB in the beginning and 136.9MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-11 23:59:26,161 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.05ms. Allocated memory is still 192.9MB. Free memory was 136.7MB in the beginning and 135.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-11 23:59:26,162 INFO L158 Benchmark]: Boogie Preprocessor took 22.28ms. Allocated memory is still 192.9MB. Free memory was 135.4MB in the beginning and 134.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-11 23:59:26,163 INFO L158 Benchmark]: RCFGBuilder took 305.12ms. Allocated memory is still 192.9MB. Free memory was 134.0MB in the beginning and 122.9MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-11 23:59:26,163 INFO L158 Benchmark]: CodeCheck took 3857.96ms. Allocated memory is still 192.9MB. Free memory was 122.9MB in the beginning and 75.6MB in the end (delta: 47.3MB). Peak memory consumption was 49.6MB. Max. memory is 16.1GB. [2023-11-11 23:59:26,170 INFO L158 Benchmark]: Witness Printer took 115.56ms. Allocated memory is still 192.9MB. Free memory was 74.5MB in the beginning and 71.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-11 23:59:26,173 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, 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, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 56 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.9s 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, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s 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 0.34ms. Allocated memory is still 142.6MB. Free memory is still 85.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 273.68ms. Allocated memory is still 192.9MB. Free memory was 146.6MB in the beginning and 136.9MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.05ms. Allocated memory is still 192.9MB. Free memory was 136.7MB in the beginning and 135.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.28ms. Allocated memory is still 192.9MB. Free memory was 135.4MB in the beginning and 134.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 305.12ms. Allocated memory is still 192.9MB. Free memory was 134.0MB in the beginning and 122.9MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * CodeCheck took 3857.96ms. Allocated memory is still 192.9MB. Free memory was 122.9MB in the beginning and 75.6MB in the end (delta: 47.3MB). Peak memory consumption was 49.6MB. Max. memory is 16.1GB. * Witness Printer took 115.56ms. Allocated memory is still 192.9MB. Free memory was 74.5MB in the beginning and 71.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be correct! [2023-11-11 23:59:26,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b468b0-2d0c-49de-9949-15f669f73388/bin/ukojak-verify-0OAaufAVZV/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE