./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/gcd01-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda05ca9-0df7-4d16-8a91-281c41ad5877/bin/ukojak-rkRKPMF4O4/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda05ca9-0df7-4d16-8a91-281c41ad5877/bin/ukojak-rkRKPMF4O4/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda05ca9-0df7-4d16-8a91-281c41ad5877/bin/ukojak-rkRKPMF4O4/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda05ca9-0df7-4d16-8a91-281c41ad5877/bin/ukojak-rkRKPMF4O4/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive/gcd01-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda05ca9-0df7-4d16-8a91-281c41ad5877/bin/ukojak-rkRKPMF4O4/config/svcomp-Overflow-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda05ca9-0df7-4d16-8a91-281c41ad5877/bin/ukojak-rkRKPMF4O4 --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 32bit --witnessprinter.graph.data.programhash ceea5216a7b51ee21eab36f0e9b129c25f18193871fb4ca0aa52ef8740fc0ce8 --- 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-2329fc7 [2022-12-14 21:52:22,781 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 21:52:22,783 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 21:52:22,797 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 21:52:22,798 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 21:52:22,799 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 21:52:22,800 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 21:52:22,801 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 21:52:22,802 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 21:52:22,802 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 21:52:22,803 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 21:52:22,804 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 21:52:22,804 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 21:52:22,805 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 21:52:22,806 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 21:52:22,806 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 21:52:22,807 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 21:52:22,808 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 21:52:22,809 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 21:52:22,810 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 21:52:22,811 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 21:52:22,813 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 21:52:22,814 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 21:52:22,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 21:52:22,820 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 21:52:22,820 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 21:52:22,820 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 21:52:22,821 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 21:52:22,821 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 21:52:22,822 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 21:52:22,822 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 21:52:22,823 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 21:52:22,824 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 21:52:22,824 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 21:52:22,825 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 21:52:22,825 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 21:52:22,825 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 21:52:22,826 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 21:52:22,826 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 21:52:22,826 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 21:52:22,827 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 21:52:22,828 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda05ca9-0df7-4d16-8a91-281c41ad5877/bin/ukojak-rkRKPMF4O4/config/svcomp-Overflow-32bit-Kojak_Default.epf [2022-12-14 21:52:22,841 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 21:52:22,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 21:52:22,842 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 21:52:22,842 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2022-12-14 21:52:22,843 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 21:52:22,843 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 21:52:22,843 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 21:52:22,843 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 21:52:22,843 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 21:52:22,843 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 21:52:22,844 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 21:52:22,844 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 21:52:22,844 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 21:52:22,844 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 21:52:22,844 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 21:52:22,844 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 21:52:22,844 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 21:52:22,845 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 21:52:22,845 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 21:52:22,845 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 21:52:22,845 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2022-12-14 21:52:22,845 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2022-12-14 21:52:22,845 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 21:52:22,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-12-14 21:52:22,846 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 21:52:22,846 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 21:52:22,846 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 21:52:22,846 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2022-12-14 21:52:22,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 21:52:22,846 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 21:52:22,846 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_cda05ca9-0df7-4d16-8a91-281c41ad5877/bin/ukojak-rkRKPMF4O4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda05ca9-0df7-4d16-8a91-281c41ad5877/bin/ukojak-rkRKPMF4O4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ceea5216a7b51ee21eab36f0e9b129c25f18193871fb4ca0aa52ef8740fc0ce8 [2022-12-14 21:52:23,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 21:52:23,028 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 21:52:23,030 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 21:52:23,032 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 21:52:23,032 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 21:52:23,033 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda05ca9-0df7-4d16-8a91-281c41ad5877/bin/ukojak-rkRKPMF4O4/../../sv-benchmarks/c/recursive/gcd01-1.c [2022-12-14 21:52:25,555 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 21:52:25,668 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 21:52:25,668 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda05ca9-0df7-4d16-8a91-281c41ad5877/sv-benchmarks/c/recursive/gcd01-1.c [2022-12-14 21:52:25,672 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda05ca9-0df7-4d16-8a91-281c41ad5877/bin/ukojak-rkRKPMF4O4/data/f78236ab3/4a09c4a1ce9c46d89b5a39a31772202d/FLAG0e7bc0e39 [2022-12-14 21:52:25,682 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda05ca9-0df7-4d16-8a91-281c41ad5877/bin/ukojak-rkRKPMF4O4/data/f78236ab3/4a09c4a1ce9c46d89b5a39a31772202d [2022-12-14 21:52:25,684 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 21:52:25,685 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 21:52:25,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 21:52:25,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 21:52:25,689 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 21:52:25,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:52:25" (1/1) ... [2022-12-14 21:52:25,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d3df357 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:25, skipping insertion in model container [2022-12-14 21:52:25,690 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:52:25" (1/1) ... [2022-12-14 21:52:25,696 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 21:52:25,706 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 21:52:25,813 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_cda05ca9-0df7-4d16-8a91-281c41ad5877/sv-benchmarks/c/recursive/gcd01-1.c[1008,1021] [2022-12-14 21:52:25,813 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 21:52:25,821 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 21:52:25,832 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_cda05ca9-0df7-4d16-8a91-281c41ad5877/sv-benchmarks/c/recursive/gcd01-1.c[1008,1021] [2022-12-14 21:52:25,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 21:52:25,842 INFO L208 MainTranslator]: Completed translation [2022-12-14 21:52:25,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:25 WrapperNode [2022-12-14 21:52:25,842 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 21:52:25,843 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 21:52:25,843 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 21:52:25,843 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 21:52:25,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:25" (1/1) ... [2022-12-14 21:52:25,855 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:25" (1/1) ... [2022-12-14 21:52:25,869 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 32 [2022-12-14 21:52:25,870 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 21:52:25,870 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 21:52:25,871 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 21:52:25,871 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 21:52:25,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:25" (1/1) ... [2022-12-14 21:52:25,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:25" (1/1) ... [2022-12-14 21:52:25,879 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:25" (1/1) ... [2022-12-14 21:52:25,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:25" (1/1) ... [2022-12-14 21:52:25,881 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:25" (1/1) ... [2022-12-14 21:52:25,882 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:25" (1/1) ... [2022-12-14 21:52:25,883 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:25" (1/1) ... [2022-12-14 21:52:25,883 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:25" (1/1) ... [2022-12-14 21:52:25,884 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 21:52:25,885 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 21:52:25,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 21:52:25,885 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 21:52:25,886 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:25" (1/1) ... [2022-12-14 21:52:25,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-12-14 21:52:25,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda05ca9-0df7-4d16-8a91-281c41ad5877/bin/ukojak-rkRKPMF4O4/z3 [2022-12-14 21:52:25,911 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda05ca9-0df7-4d16-8a91-281c41ad5877/bin/ukojak-rkRKPMF4O4/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2022-12-14 21:52:25,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda05ca9-0df7-4d16-8a91-281c41ad5877/bin/ukojak-rkRKPMF4O4/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2022-12-14 21:52:25,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 21:52:25,943 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2022-12-14 21:52:25,943 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2022-12-14 21:52:25,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 21:52:25,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 21:52:25,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 21:52:26,003 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 21:52:26,006 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 21:52:26,129 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 21:52:26,154 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 21:52:26,154 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 21:52:26,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:52:26 BoogieIcfgContainer [2022-12-14 21:52:26,157 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 21:52:26,158 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2022-12-14 21:52:26,158 INFO L271 PluginConnector]: Initializing CodeCheck... [2022-12-14 21:52:26,168 INFO L275 PluginConnector]: CodeCheck initialized [2022-12-14 21:52:26,169 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:52:26" (1/1) ... [2022-12-14 21:52:26,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 21:52:26,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 21:52:26,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 25 states and 31 transitions. [2022-12-14 21:52:26,236 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2022-12-14 21:52:26,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 21:52:26,240 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 21:52:26,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 21:52:26,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 21:52:26,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 21:52:26,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 21:52:26,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 24 states and 30 transitions. [2022-12-14 21:52:26,428 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2022-12-14 21:52:26,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 21:52:26,429 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 21:52:26,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 21:52:26,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 21:52:26,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 21:52:26,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 21:52:26,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 23 states and 29 transitions. [2022-12-14 21:52:26,489 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2022-12-14 21:52:26,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 21:52:26,490 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 21:52:26,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 21:52:26,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 21:52:26,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 21:52:26,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 21:52:26,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 29 states and 39 transitions. [2022-12-14 21:52:26,671 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2022-12-14 21:52:26,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 21:52:26,672 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 21:52:26,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 21:52:26,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 21:52:26,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 21:52:27,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 21:52:27,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 35 states and 50 transitions. [2022-12-14 21:52:27,077 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2022-12-14 21:52:27,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 21:52:27,079 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 21:52:27,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 21:52:27,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 21:52:27,196 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 21:52:27,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 21:52:27,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 36 states and 53 transitions. [2022-12-14 21:52:27,271 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 53 transitions. [2022-12-14 21:52:27,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 21:52:27,272 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 21:52:27,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 21:52:27,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 21:52:27,337 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 21:52:27,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 21:52:27,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 41 states and 61 transitions. [2022-12-14 21:52:27,603 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 61 transitions. [2022-12-14 21:52:27,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 21:52:27,604 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 21:52:27,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 21:52:27,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 21:52:27,708 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 21:52:27,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 21:52:27,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 44 states and 68 transitions. [2022-12-14 21:52:27,977 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 68 transitions. [2022-12-14 21:52:27,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 21:52:27,978 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 21:52:27,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 21:52:27,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 21:52:28,010 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 21:52:28,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 21:52:28,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 21 states and 27 transitions. [2022-12-14 21:52:28,331 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2022-12-14 21:52:28,331 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 21:52:28,331 WARN L419 CodeCheckObserver]: This Program is SAFE, Check terminated with 9 iterations. [2022-12-14 21:52:28,337 INFO L754 CodeCheckObserver]: All specifications hold 4 specifications checked. All of them hold [2022-12-14 21:52:28,373 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2022-12-14 21:52:28,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 14.12 09:52:28 ImpRootNode [2022-12-14 21:52:28,377 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2022-12-14 21:52:28,377 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 21:52:28,377 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 21:52:28,377 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 21:52:28,378 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:52:26" (3/4) ... [2022-12-14 21:52:28,380 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 21:52:28,384 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure gcd [2022-12-14 21:52:28,387 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-12-14 21:52:28,387 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-12-14 21:52:28,387 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-14 21:52:28,387 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 21:52:28,414 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda05ca9-0df7-4d16-8a91-281c41ad5877/bin/ukojak-rkRKPMF4O4/witness.graphml [2022-12-14 21:52:28,414 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 21:52:28,415 INFO L158 Benchmark]: Toolchain (without parser) took 2729.17ms. Allocated memory is still 167.8MB. Free memory was 123.7MB in the beginning and 70.2MB in the end (delta: 53.5MB). Peak memory consumption was 56.0MB. Max. memory is 16.1GB. [2022-12-14 21:52:28,415 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 167.8MB. Free memory was 111.0MB in the beginning and 110.8MB in the end (delta: 162.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 21:52:28,415 INFO L158 Benchmark]: CACSL2BoogieTranslator took 156.45ms. Allocated memory is still 167.8MB. Free memory was 123.7MB in the beginning and 113.9MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 21:52:28,416 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.62ms. Allocated memory is still 167.8MB. Free memory was 113.9MB in the beginning and 112.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 21:52:28,416 INFO L158 Benchmark]: Boogie Preprocessor took 14.10ms. Allocated memory is still 167.8MB. Free memory was 112.6MB in the beginning and 111.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 21:52:28,416 INFO L158 Benchmark]: RCFGBuilder took 272.26ms. Allocated memory is still 167.8MB. Free memory was 111.1MB in the beginning and 99.3MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 21:52:28,416 INFO L158 Benchmark]: CodeCheck took 2218.69ms. Allocated memory is still 167.8MB. Free memory was 99.3MB in the beginning and 72.2MB in the end (delta: 27.1MB). Peak memory consumption was 28.8MB. Max. memory is 16.1GB. [2022-12-14 21:52:28,417 INFO L158 Benchmark]: Witness Printer took 37.12ms. Allocated memory is still 167.8MB. Free memory was 72.2MB in the beginning and 70.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 21:52:28,418 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: 2.1s, OverallIterations: 9, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 347 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 164 mSDsluCounter, 174 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 153 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 743 IncrementalHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 153 mSolverCounterUnsat, 174 mSDtfsCounter, 743 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 913 GetRequests, 816 SyntacticMatches, 17 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2040 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 329 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 12/20 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 0.22ms. Allocated memory is still 167.8MB. Free memory was 111.0MB in the beginning and 110.8MB in the end (delta: 162.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 156.45ms. Allocated memory is still 167.8MB. Free memory was 123.7MB in the beginning and 113.9MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.62ms. Allocated memory is still 167.8MB. Free memory was 113.9MB in the beginning and 112.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 14.10ms. Allocated memory is still 167.8MB. Free memory was 112.6MB in the beginning and 111.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 272.26ms. Allocated memory is still 167.8MB. Free memory was 111.1MB in the beginning and 99.3MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * CodeCheck took 2218.69ms. Allocated memory is still 167.8MB. Free memory was 99.3MB in the beginning and 72.2MB in the end (delta: 27.1MB). Peak memory consumption was 28.8MB. Max. memory is 16.1GB. * Witness Printer took 37.12ms. Allocated memory is still 167.8MB. Free memory was 72.2MB in the beginning and 70.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be correct! [2022-12-14 21:52:28,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda05ca9-0df7-4d16-8a91-281c41ad5877/bin/ukojak-rkRKPMF4O4/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