./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 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_56f9ef84-2fd2-4110-9f3b-6ebecc2de32c/bin/ukojak-verify-1t5iHCbJaC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f9ef84-2fd2-4110-9f3b-6ebecc2de32c/bin/ukojak-verify-1t5iHCbJaC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f9ef84-2fd2-4110-9f3b-6ebecc2de32c/bin/ukojak-verify-1t5iHCbJaC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f9ef84-2fd2-4110-9f3b-6ebecc2de32c/bin/ukojak-verify-1t5iHCbJaC/config/KojakReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f9ef84-2fd2-4110-9f3b-6ebecc2de32c/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f9ef84-2fd2-4110-9f3b-6ebecc2de32c/bin/ukojak-verify-1t5iHCbJaC --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 702a5cb4e98140bb9dbcfd0fb89e24e07deb7e8ce40ea61b05e70376d58bbad7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 19:57:15,356 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 19:57:15,498 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f9ef84-2fd2-4110-9f3b-6ebecc2de32c/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-23 19:57:15,511 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 19:57:15,513 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-23 19:57:15,555 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 19:57:15,556 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 19:57:15,557 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-23 19:57:15,558 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 19:57:15,564 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 19:57:15,565 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 19:57:15,566 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 19:57:15,566 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 19:57:15,569 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 19:57:15,570 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 19:57:15,570 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 19:57:15,571 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 19:57:15,571 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 19:57:15,572 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 19:57:15,572 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 19:57:15,573 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 19:57:15,574 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-23 19:57:15,574 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-23 19:57:15,575 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-23 19:57:15,575 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 19:57:15,576 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 19:57:15,576 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 19:57:15,577 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 19:57:15,578 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 19:57:15,578 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-23 19:57:15,580 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 19:57:15,580 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 19:57:15,580 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_56f9ef84-2fd2-4110-9f3b-6ebecc2de32c/bin/ukojak-verify-1t5iHCbJaC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f9ef84-2fd2-4110-9f3b-6ebecc2de32c/bin/ukojak-verify-1t5iHCbJaC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 702a5cb4e98140bb9dbcfd0fb89e24e07deb7e8ce40ea61b05e70376d58bbad7 [2023-11-23 19:57:15,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 19:57:15,943 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 19:57:15,947 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 19:57:15,948 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 19:57:15,949 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 19:57:15,951 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f9ef84-2fd2-4110-9f3b-6ebecc2de32c/bin/ukojak-verify-1t5iHCbJaC/../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c [2023-11-23 19:57:19,590 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 19:57:19,873 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 19:57:19,874 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f9ef84-2fd2-4110-9f3b-6ebecc2de32c/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c [2023-11-23 19:57:19,882 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f9ef84-2fd2-4110-9f3b-6ebecc2de32c/bin/ukojak-verify-1t5iHCbJaC/data/02ab4ce2b/0164e87866df4374b7cc5eb5440d92b1/FLAGed556d7a4 [2023-11-23 19:57:19,897 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f9ef84-2fd2-4110-9f3b-6ebecc2de32c/bin/ukojak-verify-1t5iHCbJaC/data/02ab4ce2b/0164e87866df4374b7cc5eb5440d92b1 [2023-11-23 19:57:19,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 19:57:19,903 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 19:57:19,907 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 19:57:19,907 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 19:57:19,912 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 19:57:19,913 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:57:19" (1/1) ... [2023-11-23 19:57:19,915 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e947afc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:57:19, skipping insertion in model container [2023-11-23 19:57:19,915 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:57:19" (1/1) ... [2023-11-23 19:57:19,953 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 19:57:20,148 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 19:57:20,154 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 19:57:20,173 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 19:57:20,186 INFO L206 MainTranslator]: Completed translation [2023-11-23 19:57:20,187 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:57:20 WrapperNode [2023-11-23 19:57:20,187 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 19:57:20,188 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 19:57:20,189 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 19:57:20,189 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 19:57:20,199 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:57:20" (1/1) ... [2023-11-23 19:57:20,204 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:57:20" (1/1) ... [2023-11-23 19:57:20,226 INFO L138 Inliner]: procedures = 5, calls = 5, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2023-11-23 19:57:20,227 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 19:57:20,228 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 19:57:20,228 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 19:57:20,228 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 19:57:20,238 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:57:20" (1/1) ... [2023-11-23 19:57:20,239 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:57:20" (1/1) ... [2023-11-23 19:57:20,240 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:57:20" (1/1) ... [2023-11-23 19:57:20,240 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:57:20" (1/1) ... [2023-11-23 19:57:20,243 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:57:20" (1/1) ... [2023-11-23 19:57:20,246 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:57:20" (1/1) ... [2023-11-23 19:57:20,247 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:57:20" (1/1) ... [2023-11-23 19:57:20,248 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:57:20" (1/1) ... [2023-11-23 19:57:20,249 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 19:57:20,251 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 19:57:20,251 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 19:57:20,251 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 19:57:20,252 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:57:20" (1/1) ... [2023-11-23 19:57:20,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 19:57:20,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f9ef84-2fd2-4110-9f3b-6ebecc2de32c/bin/ukojak-verify-1t5iHCbJaC/z3 [2023-11-23 19:57:20,288 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f9ef84-2fd2-4110-9f3b-6ebecc2de32c/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-23 19:57:20,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f9ef84-2fd2-4110-9f3b-6ebecc2de32c/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-23 19:57:20,348 INFO L130 BoogieDeclarations]: Found specification of procedure p [2023-11-23 19:57:20,349 INFO L138 BoogieDeclarations]: Found implementation of procedure p [2023-11-23 19:57:20,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 19:57:20,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 19:57:20,422 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 19:57:20,424 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 19:57:20,597 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 19:57:20,636 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 19:57:20,636 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 19:57:20,638 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:57:20 BoogieIcfgContainer [2023-11-23 19:57:20,638 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 19:57:20,639 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-23 19:57:20,640 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-23 19:57:20,652 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-23 19:57:20,652 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:57:20" (1/1) ... [2023-11-23 19:57:20,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 19:57:20,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 19:57:20,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 23 states and 27 transitions. [2023-11-23 19:57:20,730 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-11-23 19:57:20,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 19:57:20,732 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 19:57:20,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 19:57:20,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 19:57:20,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 19:57:20,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 19:57:20,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 22 states and 26 transitions. [2023-11-23 19:57:20,964 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2023-11-23 19:57:20,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 19:57:20,965 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 19:57:20,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 19:57:21,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 19:57:21,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 19:57:21,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 19:57:21,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 26 states and 32 transitions. [2023-11-23 19:57:21,412 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2023-11-23 19:57:21,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 19:57:21,418 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 19:57:21,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 19:57:21,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 19:57:21,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 19:57:21,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 19:57:21,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 25 states and 31 transitions. [2023-11-23 19:57:21,543 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2023-11-23 19:57:21,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 19:57:21,547 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 19:57:21,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 19:57:21,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 19:57:21,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 19:57:22,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 19:57:22,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 30 states and 39 transitions. [2023-11-23 19:57:22,331 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2023-11-23 19:57:22,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-23 19:57:22,332 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 19:57:22,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 19:57:22,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 19:57:22,442 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 19:57:22,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 19:57:22,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 33 states and 43 transitions. [2023-11-23 19:57:22,681 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2023-11-23 19:57:22,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-23 19:57:22,684 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 19:57:22,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 19:57:22,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 19:57:22,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 19:57:23,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 19:57:23,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 34 states and 45 transitions. [2023-11-23 19:57:23,022 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2023-11-23 19:57:23,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-23 19:57:23,024 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 19:57:23,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 19:57:23,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 19:57:23,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 19:57:24,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 19:57:24,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 40 states and 57 transitions. [2023-11-23 19:57:24,482 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 57 transitions. [2023-11-23 19:57:24,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-23 19:57:24,483 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 19:57:24,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 19:57:24,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 19:57:24,531 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 19:57:24,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 19:57:24,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 41 states and 60 transitions. [2023-11-23 19:57:24,658 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 60 transitions. [2023-11-23 19:57:24,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-23 19:57:24,664 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 19:57:24,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 19:57:24,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 19:57:24,740 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 19:57:25,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 19:57:25,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 44 states and 63 transitions. [2023-11-23 19:57:25,040 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 63 transitions. [2023-11-23 19:57:25,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-23 19:57:25,042 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 19:57:25,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 19:57:25,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 19:57:25,300 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 19:57:26,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 19:57:26,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 19 states and 23 transitions. [2023-11-23 19:57:26,023 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2023-11-23 19:57:26,024 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-23 19:57:26,025 WARN L420 CodeCheckObserver]: This Program is SAFE, Check terminated with 11 iterations. [2023-11-23 19:57:26,036 INFO L751 CodeCheckObserver]: All specifications hold 4 specifications checked. All of them hold [2023-11-23 19:57:26,133 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-23 19:57:26,140 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 07:57:26 ImpRootNode [2023-11-23 19:57:26,140 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-23 19:57:26,141 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 19:57:26,141 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 19:57:26,141 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 19:57:26,142 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:57:20" (3/4) ... [2023-11-23 19:57:26,145 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 19:57:26,151 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure p [2023-11-23 19:57:26,157 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-11-23 19:57:26,158 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-23 19:57:26,158 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-23 19:57:26,286 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f9ef84-2fd2-4110-9f3b-6ebecc2de32c/bin/ukojak-verify-1t5iHCbJaC/witness.graphml [2023-11-23 19:57:26,286 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f9ef84-2fd2-4110-9f3b-6ebecc2de32c/bin/ukojak-verify-1t5iHCbJaC/witness.yml [2023-11-23 19:57:26,287 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 19:57:26,288 INFO L158 Benchmark]: Toolchain (without parser) took 6384.96ms. Allocated memory is still 174.1MB. Free memory was 131.6MB in the beginning and 123.9MB in the end (delta: 7.7MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. [2023-11-23 19:57:26,288 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 130.0MB. Free memory is still 73.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 19:57:26,289 INFO L158 Benchmark]: CACSL2BoogieTranslator took 281.04ms. Allocated memory is still 174.1MB. Free memory was 131.0MB in the beginning and 121.7MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-23 19:57:26,290 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.54ms. Allocated memory is still 174.1MB. Free memory was 121.7MB in the beginning and 120.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 19:57:26,290 INFO L158 Benchmark]: Boogie Preprocessor took 21.93ms. Allocated memory is still 174.1MB. Free memory was 120.4MB in the beginning and 119.6MB in the end (delta: 781.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 19:57:26,291 INFO L158 Benchmark]: RCFGBuilder took 387.82ms. Allocated memory is still 174.1MB. Free memory was 119.6MB in the beginning and 108.5MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-23 19:57:26,292 INFO L158 Benchmark]: CodeCheck took 5500.81ms. Allocated memory is still 174.1MB. Free memory was 108.5MB in the beginning and 128.0MB in the end (delta: -19.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 19:57:26,292 INFO L158 Benchmark]: Witness Printer took 146.06ms. Allocated memory is still 174.1MB. Free memory was 128.0MB in the beginning and 123.9MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 19:57:26,295 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 2 procedures, 23 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 5.3s, OverallIterations: 11, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 397 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 236 mSDsluCounter, 206 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 216 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1010 IncrementalHoareTripleChecker+Invalid, 1226 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 216 mSolverCounterUnsat, 206 mSDtfsCounter, 1010 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1009 GetRequests, 860 SyntacticMatches, 61 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2356 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 117 NumberOfCodeBlocks, 117 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 107 ConstructedInterpolants, 0 QuantifiedInterpolants, 295 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 5 PerfectInterpolantSequences, 11/31 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: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 130.0MB. Free memory is still 73.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 281.04ms. Allocated memory is still 174.1MB. Free memory was 131.0MB in the beginning and 121.7MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.54ms. Allocated memory is still 174.1MB. Free memory was 121.7MB in the beginning and 120.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 21.93ms. Allocated memory is still 174.1MB. Free memory was 120.4MB in the beginning and 119.6MB in the end (delta: 781.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 387.82ms. Allocated memory is still 174.1MB. Free memory was 119.6MB in the beginning and 108.5MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * CodeCheck took 5500.81ms. Allocated memory is still 174.1MB. Free memory was 108.5MB in the beginning and 128.0MB in the end (delta: -19.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 146.06ms. Allocated memory is still 174.1MB. Free memory was 128.0MB in the beginning and 123.9MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be correct! [2023-11-23 19:57:26,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56f9ef84-2fd2-4110-9f3b-6ebecc2de32c/bin/ukojak-verify-1t5iHCbJaC/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