./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-memory-alloca/openbsd_cstrstr-alloca-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 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_866b4d38-5196-4261-bc56-02542166ee7d/bin/ukojak-verify-0OAaufAVZV/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866b4d38-5196-4261-bc56-02542166ee7d/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_866b4d38-5196-4261-bc56-02542166ee7d/bin/ukojak-verify-0OAaufAVZV/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866b4d38-5196-4261-bc56-02542166ee7d/bin/ukojak-verify-0OAaufAVZV/config/KojakReach.xml -i ../../sv-benchmarks/c/termination-memory-alloca/openbsd_cstrstr-alloca-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866b4d38-5196-4261-bc56-02542166ee7d/bin/ukojak-verify-0OAaufAVZV/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866b4d38-5196-4261-bc56-02542166ee7d/bin/ukojak-verify-0OAaufAVZV --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 64bit --witnessprinter.graph.data.programhash 383b4a741115f7461f3219e8b6813a438e778f299f3d0f3c72277e19fd6c8f24 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-11 23:59:15,921 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-11 23:59:16,038 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866b4d38-5196-4261-bc56-02542166ee7d/bin/ukojak-verify-0OAaufAVZV/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-11 23:59:16,049 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-11 23:59:16,049 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-11 23:59:16,091 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-11 23:59:16,093 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-11 23:59:16,094 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-11 23:59:16,095 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-11 23:59:16,102 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-11 23:59:16,103 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-11 23:59:16,103 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-11 23:59:16,104 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-11 23:59:16,106 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-11 23:59:16,106 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-11 23:59:16,106 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-11 23:59:16,107 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-11 23:59:16,107 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-11 23:59:16,108 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-11 23:59:16,108 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-11 23:59:16,109 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-11 23:59:16,109 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-11 23:59:16,110 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-11 23:59:16,111 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-11 23:59:16,111 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-11 23:59:16,111 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-11 23:59:16,112 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-11 23:59:16,112 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-11 23:59:16,113 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-11 23:59:16,113 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-11 23:59:16,114 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-11 23:59:16,115 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_866b4d38-5196-4261-bc56-02542166ee7d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866b4d38-5196-4261-bc56-02542166ee7d/bin/ukojak-verify-0OAaufAVZV Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 383b4a741115f7461f3219e8b6813a438e778f299f3d0f3c72277e19fd6c8f24 [2023-11-11 23:59:16,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-11 23:59:16,474 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-11 23:59:16,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-11 23:59:16,478 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-11 23:59:16,479 INFO L274 PluginConnector]: CDTParser initialized [2023-11-11 23:59:16,480 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866b4d38-5196-4261-bc56-02542166ee7d/bin/ukojak-verify-0OAaufAVZV/../../sv-benchmarks/c/termination-memory-alloca/openbsd_cstrstr-alloca-1.i [2023-11-11 23:59:19,602 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-11 23:59:19,889 INFO L384 CDTParser]: Found 1 translation units. [2023-11-11 23:59:19,889 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866b4d38-5196-4261-bc56-02542166ee7d/sv-benchmarks/c/termination-memory-alloca/openbsd_cstrstr-alloca-1.i [2023-11-11 23:59:19,911 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866b4d38-5196-4261-bc56-02542166ee7d/bin/ukojak-verify-0OAaufAVZV/data/fc3ce62ad/5cf63481cadd482b98fec76a70171ecf/FLAG6a1c2b0cb [2023-11-11 23:59:19,936 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866b4d38-5196-4261-bc56-02542166ee7d/bin/ukojak-verify-0OAaufAVZV/data/fc3ce62ad/5cf63481cadd482b98fec76a70171ecf [2023-11-11 23:59:19,943 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-11 23:59:19,945 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-11 23:59:19,948 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-11 23:59:19,949 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-11 23:59:19,955 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-11 23:59:19,959 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 11:59:19" (1/1) ... [2023-11-11 23:59:19,960 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51001e0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:59:19, skipping insertion in model container [2023-11-11 23:59:19,961 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 11:59:19" (1/1) ... [2023-11-11 23:59:20,032 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-11 23:59:20,432 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-11 23:59:20,446 INFO L202 MainTranslator]: Completed pre-run [2023-11-11 23:59:20,514 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-11 23:59:20,548 INFO L206 MainTranslator]: Completed translation [2023-11-11 23:59:20,549 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:59:20 WrapperNode [2023-11-11 23:59:20,549 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-11 23:59:20,550 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-11 23:59:20,550 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-11 23:59:20,550 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-11 23:59:20,557 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:59:20" (1/1) ... [2023-11-11 23:59:20,572 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:59:20" (1/1) ... [2023-11-11 23:59:20,598 INFO L138 Inliner]: procedures = 113, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 145 [2023-11-11 23:59:20,598 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-11 23:59:20,599 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-11 23:59:20,599 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-11 23:59:20,599 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-11 23:59:20,609 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:59:20" (1/1) ... [2023-11-11 23:59:20,609 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:59:20" (1/1) ... [2023-11-11 23:59:20,613 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:59:20" (1/1) ... [2023-11-11 23:59:20,614 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:59:20" (1/1) ... [2023-11-11 23:59:20,622 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:59:20" (1/1) ... [2023-11-11 23:59:20,626 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:59:20" (1/1) ... [2023-11-11 23:59:20,628 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:59:20" (1/1) ... [2023-11-11 23:59:20,630 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:59:20" (1/1) ... [2023-11-11 23:59:20,633 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-11 23:59:20,634 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-11 23:59:20,634 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-11 23:59:20,635 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-11 23:59:20,635 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:59:20" (1/1) ... [2023-11-11 23:59:20,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-11 23:59:20,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866b4d38-5196-4261-bc56-02542166ee7d/bin/ukojak-verify-0OAaufAVZV/z3 [2023-11-11 23:59:20,672 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866b4d38-5196-4261-bc56-02542166ee7d/bin/ukojak-verify-0OAaufAVZV/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-11 23:59:20,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866b4d38-5196-4261-bc56-02542166ee7d/bin/ukojak-verify-0OAaufAVZV/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-11 23:59:20,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-11 23:59:20,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-11 23:59:20,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-11 23:59:20,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-11 23:59:20,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-11 23:59:20,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-11 23:59:20,841 INFO L236 CfgBuilder]: Building ICFG [2023-11-11 23:59:20,843 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-11 23:59:21,161 INFO L277 CfgBuilder]: Performing block encoding [2023-11-11 23:59:21,241 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-11 23:59:21,242 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-11 23:59:21,244 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 11:59:21 BoogieIcfgContainer [2023-11-11 23:59:21,244 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-11 23:59:21,255 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-11 23:59:21,255 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-11 23:59:21,265 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-11 23:59:21,266 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 11:59:21" (1/1) ... [2023-11-11 23:59:21,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-11 23:59:21,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:59:21,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 34 states and 46 transitions. [2023-11-11 23:59:21,328 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 46 transitions. [2023-11-11 23:59:21,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-11 23:59:21,330 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:59:21,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:59:21,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:59:21,596 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 23:59:21,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:59:21,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 33 states and 45 transitions. [2023-11-11 23:59:21,650 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 45 transitions. [2023-11-11 23:59:21,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-11 23:59:21,650 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:59:21,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:59:21,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:59:21,837 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 23:59:21,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:59:21,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 32 states and 44 transitions. [2023-11-11 23:59:21,890 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 44 transitions. [2023-11-11 23:59:21,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-11 23:59:21,890 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:59:21,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:59:21,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:59:22,045 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 23:59:22,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:59:22,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 31 states and 43 transitions. [2023-11-11 23:59:22,228 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 43 transitions. [2023-11-11 23:59:22,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-11 23:59:22,228 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:59:22,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:59:22,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:59:22,310 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 23:59:22,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:59:22,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 30 states and 42 transitions. [2023-11-11 23:59:22,578 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 42 transitions. [2023-11-11 23:59:22,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-11 23:59:22,579 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:59:22,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:59:22,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:59:22,640 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 23:59:22,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:59:22,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 29 states and 37 transitions. [2023-11-11 23:59:22,652 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2023-11-11 23:59:22,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-11 23:59:22,653 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:59:22,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:59:22,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:59:22,693 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 23:59:22,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:59:22,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 28 states and 36 transitions. [2023-11-11 23:59:22,701 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2023-11-11 23:59:22,702 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-11 23:59:22,702 WARN L420 CodeCheckObserver]: This Program is SAFE, Check terminated with 7 iterations. [2023-11-11 23:59:22,711 INFO L753 CodeCheckObserver]: All specifications hold 6 specifications checked. All of them hold [2023-11-11 23:59:22,749 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-11 23:59:22,754 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-11 23:59:22,754 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-11 23:59:22,754 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-11 23:59:22,754 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-11 23:59:22,755 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-11 23:59:22,755 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-11 23:59:22,755 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 11.11 11:59:22 ImpRootNode [2023-11-11 23:59:22,755 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-11 23:59:22,756 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-11 23:59:22,756 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-11 23:59:22,756 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-11 23:59:22,757 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 11:59:21" (3/4) ... [2023-11-11 23:59:22,759 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-11 23:59:22,769 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-11-11 23:59:22,769 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-11-11 23:59:22,770 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-11 23:59:22,770 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-11 23:59:22,869 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866b4d38-5196-4261-bc56-02542166ee7d/bin/ukojak-verify-0OAaufAVZV/witness.graphml [2023-11-11 23:59:22,869 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866b4d38-5196-4261-bc56-02542166ee7d/bin/ukojak-verify-0OAaufAVZV/witness.yml [2023-11-11 23:59:22,869 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-11 23:59:22,870 INFO L158 Benchmark]: Toolchain (without parser) took 2924.88ms. Allocated memory was 136.3MB in the beginning and 184.5MB in the end (delta: 48.2MB). Free memory was 89.8MB in the beginning and 76.7MB in the end (delta: 13.1MB). Peak memory consumption was 62.2MB. Max. memory is 16.1GB. [2023-11-11 23:59:22,871 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 98.6MB. Free memory was 47.3MB in the beginning and 47.2MB in the end (delta: 117.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-11 23:59:22,871 INFO L158 Benchmark]: CACSL2BoogieTranslator took 601.17ms. Allocated memory is still 136.3MB. Free memory was 89.4MB in the beginning and 72.9MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-11 23:59:22,872 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.49ms. Allocated memory is still 136.3MB. Free memory was 72.9MB in the beginning and 70.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-11 23:59:22,872 INFO L158 Benchmark]: Boogie Preprocessor took 34.43ms. Allocated memory is still 136.3MB. Free memory was 70.4MB in the beginning and 68.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-11 23:59:22,872 INFO L158 Benchmark]: RCFGBuilder took 610.36ms. Allocated memory was 136.3MB in the beginning and 184.5MB in the end (delta: 48.2MB). Free memory was 68.8MB in the beginning and 149.1MB in the end (delta: -80.2MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. [2023-11-11 23:59:22,873 INFO L158 Benchmark]: CodeCheck took 1500.91ms. Allocated memory is still 184.5MB. Free memory was 149.1MB in the beginning and 81.9MB in the end (delta: 67.1MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. [2023-11-11 23:59:22,873 INFO L158 Benchmark]: Witness Printer took 113.50ms. Allocated memory is still 184.5MB. Free memory was 81.9MB in the beginning and 76.7MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-11 23:59:22,875 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, 34 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 7, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 142 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 52 mSDsluCounter, 37 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 36 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 200 IncrementalHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 36 mSolverCounterUnsat, 37 mSDtfsCounter, 200 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 321 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 62 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - PositiveResult [Line: 596]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 596]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 597]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 597]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 562]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 562]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 560]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 555]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 576]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 568]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 551]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 575]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 551]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 98.6MB. Free memory was 47.3MB in the beginning and 47.2MB in the end (delta: 117.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 601.17ms. Allocated memory is still 136.3MB. Free memory was 89.4MB in the beginning and 72.9MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.49ms. Allocated memory is still 136.3MB. Free memory was 72.9MB in the beginning and 70.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.43ms. Allocated memory is still 136.3MB. Free memory was 70.4MB in the beginning and 68.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 610.36ms. Allocated memory was 136.3MB in the beginning and 184.5MB in the end (delta: 48.2MB). Free memory was 68.8MB in the beginning and 149.1MB in the end (delta: -80.2MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. * CodeCheck took 1500.91ms. Allocated memory is still 184.5MB. Free memory was 149.1MB in the beginning and 81.9MB in the end (delta: 67.1MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. * Witness Printer took 113.50ms. Allocated memory is still 184.5MB. Free memory was 81.9MB in the beginning and 76.7MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be correct! [2023-11-11 23:59:22,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866b4d38-5196-4261-bc56-02542166ee7d/bin/ukojak-verify-0OAaufAVZV/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