./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/NestedRecursion_1c.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b 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_f6ca2dec-ee46-4ecf-9c91-caa8c6c16343/bin/ukojak-pZX7IvK2PQ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ca2dec-ee46-4ecf-9c91-caa8c6c16343/bin/ukojak-pZX7IvK2PQ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ca2dec-ee46-4ecf-9c91-caa8c6c16343/bin/ukojak-pZX7IvK2PQ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ca2dec-ee46-4ecf-9c91-caa8c6c16343/bin/ukojak-pZX7IvK2PQ/config/KojakReach.xml -i ../../sv-benchmarks/c/termination-crafted/NestedRecursion_1c.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ca2dec-ee46-4ecf-9c91-caa8c6c16343/bin/ukojak-pZX7IvK2PQ/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ca2dec-ee46-4ecf-9c91-caa8c6c16343/bin/ukojak-pZX7IvK2PQ --witnessprinter.witness.filename witness.graphml --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 f5c626d5135dc189cbc332c41f07b76804a58f47ee910790099695b0d83f1587 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 17:32:13,914 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 17:32:13,917 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 17:32:13,945 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 17:32:13,946 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 17:32:13,947 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 17:32:13,948 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 17:32:13,950 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 17:32:13,952 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 17:32:13,953 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 17:32:13,955 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 17:32:13,956 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 17:32:13,957 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 17:32:13,958 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 17:32:13,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 17:32:13,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 17:32:13,962 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 17:32:13,963 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 17:32:13,965 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 17:32:13,967 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 17:32:13,968 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 17:32:13,973 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 17:32:13,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 17:32:13,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 17:32:13,985 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 17:32:13,989 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 17:32:13,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 17:32:13,991 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 17:32:13,991 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 17:32:13,992 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 17:32:13,994 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 17:32:13,995 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 17:32:13,995 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 17:32:13,996 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 17:32:13,997 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 17:32:13,998 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 17:32:13,998 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 17:32:13,999 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 17:32:13,999 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 17:32:14,000 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 17:32:14,001 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 17:32:14,002 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ca2dec-ee46-4ecf-9c91-caa8c6c16343/bin/ukojak-pZX7IvK2PQ/config/svcomp-Overflow-64bit-Kojak_Default.epf [2022-11-20 17:32:14,040 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 17:32:14,051 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 17:32:14,052 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 17:32:14,053 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2022-11-20 17:32:14,054 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 17:32:14,054 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 17:32:14,054 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 17:32:14,055 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 17:32:14,055 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 17:32:14,055 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 17:32:14,056 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 17:32:14,057 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 17:32:14,057 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 17:32:14,057 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 17:32:14,057 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 17:32:14,058 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 17:32:14,058 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 17:32:14,058 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2022-11-20 17:32:14,058 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2022-11-20 17:32:14,059 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 17:32:14,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-11-20 17:32:14,059 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 17:32:14,059 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 17:32:14,060 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 17:32:14,060 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2022-11-20 17:32:14,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 17:32:14,060 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 17:32:14,060 INFO L138 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_f6ca2dec-ee46-4ecf-9c91-caa8c6c16343/bin/ukojak-pZX7IvK2PQ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ca2dec-ee46-4ecf-9c91-caa8c6c16343/bin/ukojak-pZX7IvK2PQ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f5c626d5135dc189cbc332c41f07b76804a58f47ee910790099695b0d83f1587 [2022-11-20 17:32:14,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 17:32:14,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 17:32:14,366 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 17:32:14,368 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 17:32:14,368 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 17:32:14,370 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ca2dec-ee46-4ecf-9c91-caa8c6c16343/bin/ukojak-pZX7IvK2PQ/../../sv-benchmarks/c/termination-crafted/NestedRecursion_1c.c [2022-11-20 17:32:17,467 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 17:32:17,691 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 17:32:17,692 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ca2dec-ee46-4ecf-9c91-caa8c6c16343/sv-benchmarks/c/termination-crafted/NestedRecursion_1c.c [2022-11-20 17:32:17,698 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ca2dec-ee46-4ecf-9c91-caa8c6c16343/bin/ukojak-pZX7IvK2PQ/data/c190d16e1/573b42358c7545d28c99a282ff2c53e2/FLAG80152e90d [2022-11-20 17:32:17,713 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ca2dec-ee46-4ecf-9c91-caa8c6c16343/bin/ukojak-pZX7IvK2PQ/data/c190d16e1/573b42358c7545d28c99a282ff2c53e2 [2022-11-20 17:32:17,717 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 17:32:17,720 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 17:32:17,722 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 17:32:17,722 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 17:32:17,728 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 17:32:17,729 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:32:17" (1/1) ... [2022-11-20 17:32:17,730 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@243665c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:17, skipping insertion in model container [2022-11-20 17:32:17,730 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:32:17" (1/1) ... [2022-11-20 17:32:17,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 17:32:17,755 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 17:32:17,937 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 17:32:17,942 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 17:32:17,965 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 17:32:17,977 INFO L208 MainTranslator]: Completed translation [2022-11-20 17:32:17,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:17 WrapperNode [2022-11-20 17:32:17,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 17:32:17,980 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 17:32:17,981 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 17:32:17,981 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 17:32:17,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:17" (1/1) ... [2022-11-20 17:32:17,993 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:17" (1/1) ... [2022-11-20 17:32:18,009 INFO L138 Inliner]: procedures = 6, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 8 [2022-11-20 17:32:18,010 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 17:32:18,012 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 17:32:18,013 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 17:32:18,014 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 17:32:18,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:17" (1/1) ... [2022-11-20 17:32:18,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:17" (1/1) ... [2022-11-20 17:32:18,025 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:17" (1/1) ... [2022-11-20 17:32:18,026 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:17" (1/1) ... [2022-11-20 17:32:18,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:17" (1/1) ... [2022-11-20 17:32:18,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:17" (1/1) ... [2022-11-20 17:32:18,036 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:17" (1/1) ... [2022-11-20 17:32:18,037 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:17" (1/1) ... [2022-11-20 17:32:18,039 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 17:32:18,040 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 17:32:18,040 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 17:32:18,040 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 17:32:18,041 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:17" (1/1) ... [2022-11-20 17:32:18,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-11-20 17:32:18,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ca2dec-ee46-4ecf-9c91-caa8c6c16343/bin/ukojak-pZX7IvK2PQ/z3 [2022-11-20 17:32:18,070 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ca2dec-ee46-4ecf-9c91-caa8c6c16343/bin/ukojak-pZX7IvK2PQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2022-11-20 17:32:18,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ca2dec-ee46-4ecf-9c91-caa8c6c16343/bin/ukojak-pZX7IvK2PQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2022-11-20 17:32:18,113 INFO L130 BoogieDeclarations]: Found specification of procedure rec1 [2022-11-20 17:32:18,114 INFO L138 BoogieDeclarations]: Found implementation of procedure rec1 [2022-11-20 17:32:18,116 INFO L130 BoogieDeclarations]: Found specification of procedure rec2 [2022-11-20 17:32:18,116 INFO L138 BoogieDeclarations]: Found implementation of procedure rec2 [2022-11-20 17:32:18,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 17:32:18,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 17:32:18,177 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 17:32:18,179 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 17:32:18,385 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 17:32:18,418 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 17:32:18,418 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 17:32:18,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:32:18 BoogieIcfgContainer [2022-11-20 17:32:18,421 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 17:32:18,422 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2022-11-20 17:32:18,422 INFO L271 PluginConnector]: Initializing CodeCheck... [2022-11-20 17:32:18,443 INFO L275 PluginConnector]: CodeCheck initialized [2022-11-20 17:32:18,443 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:32:18" (1/1) ... [2022-11-20 17:32:18,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 17:32:18,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:32:18,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 42 states and 47 transitions. [2022-11-20 17:32:18,605 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2022-11-20 17:32:18,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 17:32:18,612 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:32:18,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:32:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:32:18,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 17:32:18,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:32:18,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 45 states and 51 transitions. [2022-11-20 17:32:18,878 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2022-11-20 17:32:18,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 17:32:18,882 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:32:18,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:32:18,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:32:18,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 17:32:19,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:32:19,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 44 states and 50 transitions. [2022-11-20 17:32:19,016 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2022-11-20 17:32:19,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 17:32:19,016 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:32:19,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:32:19,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:32:19,107 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 17:32:19,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:32:19,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 40 states and 45 transitions. [2022-11-20 17:32:19,164 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2022-11-20 17:32:19,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 17:32:19,165 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:32:19,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:32:19,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:32:19,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 17:32:19,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:32:19,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 46 states and 56 transitions. [2022-11-20 17:32:19,439 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2022-11-20 17:32:19,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 17:32:19,440 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:32:19,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:32:19,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:32:19,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 17:32:19,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:32:19,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 45 states and 55 transitions. [2022-11-20 17:32:19,606 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 55 transitions. [2022-11-20 17:32:19,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-20 17:32:19,607 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:32:19,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:32:19,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:32:19,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 17:32:19,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:32:19,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 50 states and 64 transitions. [2022-11-20 17:32:19,869 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2022-11-20 17:32:19,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-20 17:32:19,870 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:32:19,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:32:19,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:32:20,152 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-20 17:32:20,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:32:20,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 20 states and 21 transitions. [2022-11-20 17:32:20,596 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2022-11-20 17:32:20,597 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 17:32:20,597 WARN L419 CodeCheckObserver]: This Program is SAFE, Check terminated with 8 iterations. [2022-11-20 17:32:20,606 INFO L754 CodeCheckObserver]: All specifications hold 10 specifications checked. All of them hold [2022-11-20 17:32:20,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 20.11 05:32:20 ImpRootNode [2022-11-20 17:32:20,698 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2022-11-20 17:32:20,700 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 17:32:20,700 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 17:32:20,700 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 17:32:20,701 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:32:18" (3/4) ... [2022-11-20 17:32:20,704 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 17:32:20,710 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure rec1 [2022-11-20 17:32:20,711 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure rec2 [2022-11-20 17:32:20,719 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2022-11-20 17:32:20,720 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-20 17:32:20,720 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 17:32:20,765 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ca2dec-ee46-4ecf-9c91-caa8c6c16343/bin/ukojak-pZX7IvK2PQ/witness.graphml [2022-11-20 17:32:20,765 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 17:32:20,766 INFO L158 Benchmark]: Toolchain (without parser) took 3046.39ms. Allocated memory is still 195.0MB. Free memory was 155.2MB in the beginning and 103.1MB in the end (delta: 52.1MB). Peak memory consumption was 55.3MB. Max. memory is 16.1GB. [2022-11-20 17:32:20,766 INFO L158 Benchmark]: CDTParser took 0.59ms. Allocated memory is still 146.8MB. Free memory is still 88.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 17:32:20,767 INFO L158 Benchmark]: CACSL2BoogieTranslator took 257.79ms. Allocated memory is still 195.0MB. Free memory was 155.2MB in the beginning and 146.0MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 17:32:20,767 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.49ms. Allocated memory is still 195.0MB. Free memory was 146.0MB in the beginning and 144.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 17:32:20,768 INFO L158 Benchmark]: Boogie Preprocessor took 26.51ms. Allocated memory is still 195.0MB. Free memory was 144.7MB in the beginning and 144.0MB in the end (delta: 710.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 17:32:20,769 INFO L158 Benchmark]: RCFGBuilder took 381.77ms. Allocated memory is still 195.0MB. Free memory was 144.0MB in the beginning and 132.1MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 17:32:20,769 INFO L158 Benchmark]: CodeCheck took 2276.56ms. Allocated memory is still 195.0MB. Free memory was 132.1MB in the beginning and 105.2MB in the end (delta: 26.9MB). Peak memory consumption was 30.1MB. Max. memory is 16.1GB. [2022-11-20 17:32:20,770 INFO L158 Benchmark]: Witness Printer took 65.77ms. Allocated memory is still 195.0MB. Free memory was 105.2MB in the beginning and 103.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 17:32:20,772 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 3 procedures, 42 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 2.1s, OverallIterations: 8, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 176 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 98 mSDsluCounter, 158 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16 mSDsCounter, 140 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 414 IncrementalHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 140 mSolverCounterUnsat, 142 mSDtfsCounter, 414 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 796 GetRequests, 737 SyntacticMatches, 11 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 200 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 36/36 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: 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: 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: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.59ms. Allocated memory is still 146.8MB. Free memory is still 88.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 257.79ms. Allocated memory is still 195.0MB. Free memory was 155.2MB in the beginning and 146.0MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.49ms. Allocated memory is still 195.0MB. Free memory was 146.0MB in the beginning and 144.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 26.51ms. Allocated memory is still 195.0MB. Free memory was 144.7MB in the beginning and 144.0MB in the end (delta: 710.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 381.77ms. Allocated memory is still 195.0MB. Free memory was 144.0MB in the beginning and 132.1MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * CodeCheck took 2276.56ms. Allocated memory is still 195.0MB. Free memory was 132.1MB in the beginning and 105.2MB in the end (delta: 26.9MB). Peak memory consumption was 30.1MB. Max. memory is 16.1GB. * Witness Printer took 65.77ms. Allocated memory is still 195.0MB. Free memory was 105.2MB in the beginning and 103.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be correct! [2022-11-20 17:32:20,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ca2dec-ee46-4ecf-9c91-caa8c6c16343/bin/ukojak-pZX7IvK2PQ/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