./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/gcd01-2.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_8501fa9f-35e5-484e-bf5f-2c36744dd075/bin/ukojak-pZX7IvK2PQ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8501fa9f-35e5-484e-bf5f-2c36744dd075/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_8501fa9f-35e5-484e-bf5f-2c36744dd075/bin/ukojak-pZX7IvK2PQ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8501fa9f-35e5-484e-bf5f-2c36744dd075/bin/ukojak-pZX7IvK2PQ/config/KojakReach.xml -i ../../sv-benchmarks/c/termination-numeric/gcd01-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8501fa9f-35e5-484e-bf5f-2c36744dd075/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_8501fa9f-35e5-484e-bf5f-2c36744dd075/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 45c5821ff02aca8bda5f221968fe713118b5c593fcfc7e422e3a99fb31bf02bb --- 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 16:55:11,791 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 16:55:11,794 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 16:55:11,832 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 16:55:11,832 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 16:55:11,836 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 16:55:11,838 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 16:55:11,839 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 16:55:11,841 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 16:55:11,842 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 16:55:11,843 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 16:55:11,844 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 16:55:11,844 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 16:55:11,845 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 16:55:11,846 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 16:55:11,847 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 16:55:11,848 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 16:55:11,853 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 16:55:11,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 16:55:11,862 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 16:55:11,866 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 16:55:11,871 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 16:55:11,874 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 16:55:11,875 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 16:55:11,884 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 16:55:11,884 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 16:55:11,884 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 16:55:11,885 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 16:55:11,886 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 16:55:11,887 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 16:55:11,887 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 16:55:11,888 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 16:55:11,888 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 16:55:11,889 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 16:55:11,890 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 16:55:11,890 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 16:55:11,891 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 16:55:11,892 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 16:55:11,892 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 16:55:11,893 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 16:55:11,896 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 16:55:11,897 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8501fa9f-35e5-484e-bf5f-2c36744dd075/bin/ukojak-pZX7IvK2PQ/config/svcomp-Overflow-64bit-Kojak_Default.epf [2022-11-20 16:55:11,936 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 16:55:11,937 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 16:55:11,938 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 16:55:11,938 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2022-11-20 16:55:11,939 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 16:55:11,940 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 16:55:11,940 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 16:55:11,940 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 16:55:11,940 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 16:55:11,940 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 16:55:11,942 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 16:55:11,942 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 16:55:11,942 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 16:55:11,942 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 16:55:11,942 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 16:55:11,943 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 16:55:11,943 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 16:55:11,943 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2022-11-20 16:55:11,943 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2022-11-20 16:55:11,944 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 16:55:11,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-11-20 16:55:11,944 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 16:55:11,944 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 16:55:11,944 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 16:55:11,945 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2022-11-20 16:55:11,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 16:55:11,945 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 16:55:11,945 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_8501fa9f-35e5-484e-bf5f-2c36744dd075/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8501fa9f-35e5-484e-bf5f-2c36744dd075/bin/ukojak-pZX7IvK2PQ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45c5821ff02aca8bda5f221968fe713118b5c593fcfc7e422e3a99fb31bf02bb [2022-11-20 16:55:12,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 16:55:12,258 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 16:55:12,261 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 16:55:12,262 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 16:55:12,263 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 16:55:12,264 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8501fa9f-35e5-484e-bf5f-2c36744dd075/bin/ukojak-pZX7IvK2PQ/../../sv-benchmarks/c/termination-numeric/gcd01-2.c [2022-11-20 16:55:15,356 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 16:55:15,550 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 16:55:15,551 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8501fa9f-35e5-484e-bf5f-2c36744dd075/sv-benchmarks/c/termination-numeric/gcd01-2.c [2022-11-20 16:55:15,557 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8501fa9f-35e5-484e-bf5f-2c36744dd075/bin/ukojak-pZX7IvK2PQ/data/6acd6d365/6dd14d55e6c84e789114bcb594ceb9b8/FLAGe2bf0d656 [2022-11-20 16:55:15,570 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8501fa9f-35e5-484e-bf5f-2c36744dd075/bin/ukojak-pZX7IvK2PQ/data/6acd6d365/6dd14d55e6c84e789114bcb594ceb9b8 [2022-11-20 16:55:15,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 16:55:15,574 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 16:55:15,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 16:55:15,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 16:55:15,584 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 16:55:15,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:55:15" (1/1) ... [2022-11-20 16:55:15,586 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7697f86a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:55:15, skipping insertion in model container [2022-11-20 16:55:15,586 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:55:15" (1/1) ... [2022-11-20 16:55:15,596 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 16:55:15,619 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 16:55:15,752 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8501fa9f-35e5-484e-bf5f-2c36744dd075/sv-benchmarks/c/termination-numeric/gcd01-2.c[974,987] [2022-11-20 16:55:15,753 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 16:55:15,763 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 16:55:15,779 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8501fa9f-35e5-484e-bf5f-2c36744dd075/sv-benchmarks/c/termination-numeric/gcd01-2.c[974,987] [2022-11-20 16:55:15,780 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 16:55:15,794 INFO L208 MainTranslator]: Completed translation [2022-11-20 16:55:15,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:55:15 WrapperNode [2022-11-20 16:55:15,795 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 16:55:15,796 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 16:55:15,796 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 16:55:15,796 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 16:55:15,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:55:15" (1/1) ... [2022-11-20 16:55:15,809 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:55:15" (1/1) ... [2022-11-20 16:55:15,822 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 32 [2022-11-20 16:55:15,823 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 16:55:15,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 16:55:15,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 16:55:15,824 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 16:55:15,830 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:55:15" (1/1) ... [2022-11-20 16:55:15,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:55:15" (1/1) ... [2022-11-20 16:55:15,831 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:55:15" (1/1) ... [2022-11-20 16:55:15,832 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:55:15" (1/1) ... [2022-11-20 16:55:15,834 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:55:15" (1/1) ... [2022-11-20 16:55:15,836 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:55:15" (1/1) ... [2022-11-20 16:55:15,837 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:55:15" (1/1) ... [2022-11-20 16:55:15,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:55:15" (1/1) ... [2022-11-20 16:55:15,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 16:55:15,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 16:55:15,841 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 16:55:15,841 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 16:55:15,842 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:55:15" (1/1) ... [2022-11-20 16:55:15,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-11-20 16:55:15,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8501fa9f-35e5-484e-bf5f-2c36744dd075/bin/ukojak-pZX7IvK2PQ/z3 [2022-11-20 16:55:15,873 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8501fa9f-35e5-484e-bf5f-2c36744dd075/bin/ukojak-pZX7IvK2PQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2022-11-20 16:55:15,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8501fa9f-35e5-484e-bf5f-2c36744dd075/bin/ukojak-pZX7IvK2PQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2022-11-20 16:55:15,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 16:55:15,917 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2022-11-20 16:55:15,917 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2022-11-20 16:55:15,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 16:55:15,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 16:55:15,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 16:55:15,980 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 16:55:15,982 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 16:55:16,126 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 16:55:16,151 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 16:55:16,151 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 16:55:16,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:55:16 BoogieIcfgContainer [2022-11-20 16:55:16,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 16:55:16,158 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2022-11-20 16:55:16,158 INFO L271 PluginConnector]: Initializing CodeCheck... [2022-11-20 16:55:16,168 INFO L275 PluginConnector]: CodeCheck initialized [2022-11-20 16:55:16,169 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:55:16" (1/1) ... [2022-11-20 16:55:16,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 16:55:16,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 16:55:16,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 25 states and 31 transitions. [2022-11-20 16:55:16,241 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2022-11-20 16:55:16,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 16:55:16,246 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 16:55:16,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 16:55:16,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 16:55:16,581 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 16:55:16,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 16:55:16,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 30 states and 40 transitions. [2022-11-20 16:55:16,775 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2022-11-20 16:55:16,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 16:55:16,778 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 16:55:16,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 16:55:16,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 16:55:16,960 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 16:55:17,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 16:55:17,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 35 states and 50 transitions. [2022-11-20 16:55:17,497 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2022-11-20 16:55:17,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 16:55:17,498 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 16:55:17,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 16:55:17,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 16:55:17,552 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 16:55:17,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 16:55:17,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 34 states and 49 transitions. [2022-11-20 16:55:17,680 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2022-11-20 16:55:17,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 16:55:17,683 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 16:55:17,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 16:55:17,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 16:55:17,742 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 16:55:17,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 16:55:17,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 33 states and 48 transitions. [2022-11-20 16:55:17,824 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 48 transitions. [2022-11-20 16:55:17,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 16:55:17,826 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 16:55:17,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 16:55:17,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 16:55:17,933 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 16:55:18,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 16:55:18,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 40 states and 62 transitions. [2022-11-20 16:55:18,683 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 62 transitions. [2022-11-20 16:55:18,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 16:55:18,697 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 16:55:18,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 16:55:18,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 16:55:18,919 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 16:55:19,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 16:55:19,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 42 states and 65 transitions. [2022-11-20 16:55:19,194 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 65 transitions. [2022-11-20 16:55:19,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 16:55:19,195 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 16:55:19,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 16:55:19,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 16:55:19,355 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 16:55:19,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 16:55:19,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 44 states and 69 transitions. [2022-11-20 16:55:19,499 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 69 transitions. [2022-11-20 16:55:19,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 16:55:19,500 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 16:55:19,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 16:55:19,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 16:55:19,589 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 16:55:20,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 16:55:20,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 21 states and 27 transitions. [2022-11-20 16:55:20,108 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2022-11-20 16:55:20,108 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 16:55:20,108 WARN L419 CodeCheckObserver]: This Program is SAFE, Check terminated with 9 iterations. [2022-11-20 16:55:20,117 INFO L754 CodeCheckObserver]: All specifications hold 4 specifications checked. All of them hold [2022-11-20 16:55:20,186 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2022-11-20 16:55:20,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 20.11 04:55:20 ImpRootNode [2022-11-20 16:55:20,191 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2022-11-20 16:55:20,191 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 16:55:20,191 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 16:55:20,191 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 16:55:20,192 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:55:16" (3/4) ... [2022-11-20 16:55:20,195 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 16:55:20,201 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure gcd [2022-11-20 16:55:20,205 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-11-20 16:55:20,205 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-20 16:55:20,206 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-20 16:55:20,206 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 16:55:20,246 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8501fa9f-35e5-484e-bf5f-2c36744dd075/bin/ukojak-pZX7IvK2PQ/witness.graphml [2022-11-20 16:55:20,246 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 16:55:20,246 INFO L158 Benchmark]: Toolchain (without parser) took 4672.13ms. Allocated memory is still 192.9MB. Free memory was 153.4MB in the beginning and 64.8MB in the end (delta: 88.6MB). Peak memory consumption was 89.7MB. Max. memory is 16.1GB. [2022-11-20 16:55:20,247 INFO L158 Benchmark]: CDTParser took 0.63ms. Allocated memory is still 117.4MB. Free memory was 63.7MB in the beginning and 63.5MB in the end (delta: 117.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 16:55:20,247 INFO L158 Benchmark]: CACSL2BoogieTranslator took 219.36ms. Allocated memory is still 192.9MB. Free memory was 153.4MB in the beginning and 143.3MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 16:55:20,248 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.00ms. Allocated memory is still 192.9MB. Free memory was 143.3MB in the beginning and 142.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 16:55:20,248 INFO L158 Benchmark]: Boogie Preprocessor took 16.47ms. Allocated memory is still 192.9MB. Free memory was 142.0MB in the beginning and 140.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 16:55:20,249 INFO L158 Benchmark]: RCFGBuilder took 313.97ms. Allocated memory is still 192.9MB. Free memory was 140.7MB in the beginning and 129.3MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 16:55:20,250 INFO L158 Benchmark]: CodeCheck took 4032.94ms. Allocated memory is still 192.9MB. Free memory was 129.3MB in the beginning and 67.8MB in the end (delta: 61.5MB). Peak memory consumption was 64.6MB. Max. memory is 16.1GB. [2022-11-20 16:55:20,250 INFO L158 Benchmark]: Witness Printer took 54.80ms. Allocated memory is still 192.9MB. Free memory was 67.8MB in the beginning and 64.8MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 16:55:20,253 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 2 procedures, 25 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 3.9s, OverallIterations: 9, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 277 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 217 mSDsluCounter, 82 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 209 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 992 IncrementalHoareTripleChecker+Invalid, 1201 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 209 mSolverCounterUnsat, 82 mSDtfsCounter, 992 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 912 GetRequests, 812 SyntacticMatches, 16 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2332 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 306 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 10/18 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: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 27]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 27]: 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: 30]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.63ms. Allocated memory is still 117.4MB. Free memory was 63.7MB in the beginning and 63.5MB in the end (delta: 117.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 219.36ms. Allocated memory is still 192.9MB. Free memory was 153.4MB in the beginning and 143.3MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.00ms. Allocated memory is still 192.9MB. Free memory was 143.3MB in the beginning and 142.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 16.47ms. Allocated memory is still 192.9MB. Free memory was 142.0MB in the beginning and 140.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 313.97ms. Allocated memory is still 192.9MB. Free memory was 140.7MB in the beginning and 129.3MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * CodeCheck took 4032.94ms. Allocated memory is still 192.9MB. Free memory was 129.3MB in the beginning and 67.8MB in the end (delta: 61.5MB). Peak memory consumption was 64.6MB. Max. memory is 16.1GB. * Witness Printer took 54.80ms. Allocated memory is still 192.9MB. Free memory was 67.8MB in the beginning and 64.8MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be correct! [2022-11-20 16:55:20,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8501fa9f-35e5-484e-bf5f-2c36744dd075/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