./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/gcd_1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_e1fa55a6-9bc1-46d7-974f-9e09b9ba9a82/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa55a6-9bc1-46d7-974f-9e09b9ba9a82/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa55a6-9bc1-46d7-974f-9e09b9ba9a82/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa55a6-9bc1-46d7-974f-9e09b9ba9a82/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/gcd_1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa55a6-9bc1-46d7-974f-9e09b9ba9a82/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa55a6-9bc1-46d7-974f-9e09b9ba9a82/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 739715c3f9b6cd78741b6d155210624f17d4bf167a3be4c6127f06707080edde --- 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-38b53e6 [2022-11-25 23:20:48,846 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:20:48,848 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:20:48,871 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:20:48,872 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:20:48,873 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:20:48,874 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:20:48,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:20:48,877 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:20:48,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:20:48,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:20:48,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:20:48,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:20:48,882 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:20:48,883 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:20:48,885 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:20:48,886 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:20:48,887 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:20:48,889 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:20:48,891 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:20:48,892 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:20:48,894 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:20:48,895 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:20:48,896 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:20:48,900 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:20:48,900 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:20:48,901 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:20:48,902 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:20:48,902 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:20:48,903 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:20:48,904 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:20:48,905 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:20:48,906 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:20:48,907 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:20:48,908 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:20:48,908 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:20:48,909 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:20:48,909 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:20:48,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:20:48,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:20:48,911 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:20:48,912 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa55a6-9bc1-46d7-974f-9e09b9ba9a82/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-25 23:20:48,937 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:20:48,937 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:20:48,938 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:20:48,938 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:20:48,939 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:20:48,939 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:20:48,939 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:20:48,940 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:20:48,940 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:20:48,940 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:20:48,941 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:20:48,941 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:20:48,941 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:20:48,941 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:20:48,942 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:20:48,942 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:20:48,942 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:20:48,943 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:20:48,943 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:20:48,944 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 23:20:48,944 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:20:48,944 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 23:20:48,945 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:20:48,945 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:20:48,945 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:20:48,946 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:20:48,946 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 23:20:48,946 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:20:48,946 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:20:48,947 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:20:48,947 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:20:48,947 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:20:48,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:20:48,948 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:20:48,948 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:20:48,949 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:20:48,949 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:20:48,949 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:20:48,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:20:48,950 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:20:48,950 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:20:48,950 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_e1fa55a6-9bc1-46d7-974f-9e09b9ba9a82/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa55a6-9bc1-46d7-974f-9e09b9ba9a82/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 739715c3f9b6cd78741b6d155210624f17d4bf167a3be4c6127f06707080edde [2022-11-25 23:20:49,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:20:49,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:20:49,221 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:20:49,222 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:20:49,223 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:20:49,224 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa55a6-9bc1-46d7-974f-9e09b9ba9a82/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/bitvector/gcd_1.c [2022-11-25 23:20:52,428 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:20:52,596 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:20:52,597 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa55a6-9bc1-46d7-974f-9e09b9ba9a82/sv-benchmarks/c/bitvector/gcd_1.c [2022-11-25 23:20:52,603 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa55a6-9bc1-46d7-974f-9e09b9ba9a82/bin/utaipan-ByfvJB40ur/data/4861f62d8/be589d32fa09406fbf6c35c08196e7cc/FLAGe6703fbff [2022-11-25 23:20:52,618 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa55a6-9bc1-46d7-974f-9e09b9ba9a82/bin/utaipan-ByfvJB40ur/data/4861f62d8/be589d32fa09406fbf6c35c08196e7cc [2022-11-25 23:20:52,621 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:20:52,623 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:20:52,624 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:20:52,624 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:20:52,628 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:20:52,629 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:20:52" (1/1) ... [2022-11-25 23:20:52,630 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@108e04e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:20:52, skipping insertion in model container [2022-11-25 23:20:52,630 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:20:52" (1/1) ... [2022-11-25 23:20:52,639 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:20:52,655 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:20:52,801 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_e1fa55a6-9bc1-46d7-974f-9e09b9ba9a82/sv-benchmarks/c/bitvector/gcd_1.c[664,677] [2022-11-25 23:20:52,817 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:20:52,828 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:20:52,843 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_e1fa55a6-9bc1-46d7-974f-9e09b9ba9a82/sv-benchmarks/c/bitvector/gcd_1.c[664,677] [2022-11-25 23:20:52,848 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:20:52,861 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:20:52,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:20:52 WrapperNode [2022-11-25 23:20:52,862 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:20:52,864 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:20:52,864 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:20:52,864 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:20:52,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:20:52" (1/1) ... [2022-11-25 23:20:52,882 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:20:52" (1/1) ... [2022-11-25 23:20:52,919 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 55 [2022-11-25 23:20:52,922 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:20:52,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:20:52,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:20:52,925 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:20:52,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:20:52" (1/1) ... [2022-11-25 23:20:52,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:20:52" (1/1) ... [2022-11-25 23:20:52,952 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:20:52" (1/1) ... [2022-11-25 23:20:52,952 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:20:52" (1/1) ... [2022-11-25 23:20:52,955 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:20:52" (1/1) ... [2022-11-25 23:20:52,965 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:20:52" (1/1) ... [2022-11-25 23:20:52,967 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:20:52" (1/1) ... [2022-11-25 23:20:52,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:20:52" (1/1) ... [2022-11-25 23:20:52,971 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:20:52,977 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:20:52,978 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:20:52,978 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:20:52,979 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:20:52" (1/1) ... [2022-11-25 23:20:52,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:20:52,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa55a6-9bc1-46d7-974f-9e09b9ba9a82/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:20:53,018 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa55a6-9bc1-46d7-974f-9e09b9ba9a82/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:20:53,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa55a6-9bc1-46d7-974f-9e09b9ba9a82/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:20:53,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:20:53,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:20:53,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:20:53,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:20:53,136 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:20:53,138 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:20:53,330 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:20:53,375 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:20:53,375 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 23:20:53,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:20:53 BoogieIcfgContainer [2022-11-25 23:20:53,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:20:53,381 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:20:53,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:20:53,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:20:53,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:20:52" (1/3) ... [2022-11-25 23:20:53,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a1a1f21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:20:53, skipping insertion in model container [2022-11-25 23:20:53,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:20:52" (2/3) ... [2022-11-25 23:20:53,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a1a1f21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:20:53, skipping insertion in model container [2022-11-25 23:20:53,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:20:53" (3/3) ... [2022-11-25 23:20:53,388 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_1.c [2022-11-25 23:20:53,408 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:20:53,408 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 23:20:53,454 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:20:53,460 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@33cedad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:20:53,461 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 23:20:53,465 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:20:53,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-25 23:20:53,472 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:20:53,473 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 23:20:53,473 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:20:53,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:20:53,479 INFO L85 PathProgramCache]: Analyzing trace with hash 77541297, now seen corresponding path program 1 times [2022-11-25 23:20:53,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:20:53,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151614591] [2022-11-25 23:20:53,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:20:53,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:20:53,581 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 23:20:53,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2012122887] [2022-11-25 23:20:53,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:20:53,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:20:53,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa55a6-9bc1-46d7-974f-9e09b9ba9a82/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:20:53,586 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa55a6-9bc1-46d7-974f-9e09b9ba9a82/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:20:53,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa55a6-9bc1-46d7-974f-9e09b9ba9a82/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 23:20:53,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:20:53,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 23:20:53,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:20:53,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:20:53,895 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:20:53,896 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:20:53,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151614591] [2022-11-25 23:20:53,896 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 23:20:53,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012122887] [2022-11-25 23:20:53,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012122887] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:20:53,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:20:53,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:20:53,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996506522] [2022-11-25 23:20:53,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:20:53,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:20:53,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:20:53,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:20:53,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:20:53,958 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:20:54,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:20:54,010 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2022-11-25 23:20:54,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:20:54,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-25 23:20:54,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:20:54,021 INFO L225 Difference]: With dead ends: 16 [2022-11-25 23:20:54,021 INFO L226 Difference]: Without dead ends: 7 [2022-11-25 23:20:54,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:20:54,035 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:20:54,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:20:54,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2022-11-25 23:20:54,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2022-11-25 23:20:54,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:20:54,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2022-11-25 23:20:54,070 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2022-11-25 23:20:54,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:20:54,071 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2022-11-25 23:20:54,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:20:54,072 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2022-11-25 23:20:54,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-25 23:20:54,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:20:54,073 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 23:20:54,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa55a6-9bc1-46d7-974f-9e09b9ba9a82/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 23:20:54,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa55a6-9bc1-46d7-974f-9e09b9ba9a82/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-25 23:20:54,279 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:20:54,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:20:54,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1892089494, now seen corresponding path program 1 times [2022-11-25 23:20:54,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:20:54,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169270823] [2022-11-25 23:20:54,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:20:54,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:20:54,302 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 23:20:54,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [938793616] [2022-11-25 23:20:54,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:20:54,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:20:54,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa55a6-9bc1-46d7-974f-9e09b9ba9a82/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:20:54,307 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa55a6-9bc1-46d7-974f-9e09b9ba9a82/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:20:54,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa55a6-9bc1-46d7-974f-9e09b9ba9a82/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 23:20:54,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:20:54,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-25 23:20:54,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:20:54,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:20:54,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:20:54,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:20:54,529 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:20:54,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169270823] [2022-11-25 23:20:54,529 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 23:20:54,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938793616] [2022-11-25 23:20:54,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938793616] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:20:54,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [562561518] [2022-11-25 23:20:54,551 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-25 23:20:54,551 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:20:54,556 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:20:54,562 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:20:54,563 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:20:54,907 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:20:55,209 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '96#(and (= |ULTIMATE.start_gcd_test_~b#1| 0) (<= 0 (+ |ULTIMATE.start_gcd_test_#res#1| 128)) (<= |ULTIMATE.start_gcd_test_#in~a#1| 127) (<= |ULTIMATE.start_main_~x~0#1| 127) (<= |ULTIMATE.start_gcd_test_#in~b#1| 127) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 127) (= |ULTIMATE.start_main_~g~0#1| |ULTIMATE.start_gcd_test_#res#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_gcd_test_#in~b#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 128)) (<= 0 (+ |ULTIMATE.start_gcd_test_#in~a#1| 128)) (<= |ULTIMATE.start_gcd_test_#res#1| 127) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_~g~0#1| |ULTIMATE.start_main_~y~0#1|) 1 0)) (= |ULTIMATE.start_gcd_test_~a#1| |ULTIMATE.start_gcd_test_#res#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 23:20:55,209 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:20:55,216 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 23:20:55,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-25 23:20:55,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793385609] [2022-11-25 23:20:55,226 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 23:20:55,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 23:20:55,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:20:55,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 23:20:55,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-25 23:20:55,228 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 8 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:20:55,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:20:55,281 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2022-11-25 23:20:55,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:20:55,282 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-25 23:20:55,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:20:55,282 INFO L225 Difference]: With dead ends: 11 [2022-11-25 23:20:55,282 INFO L226 Difference]: Without dead ends: 8 [2022-11-25 23:20:55,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-11-25 23:20:55,284 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 2 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:20:55,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 10 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:20:55,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-11-25 23:20:55,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-11-25 23:20:55,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:20:55,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2022-11-25 23:20:55,300 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2022-11-25 23:20:55,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:20:55,301 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2022-11-25 23:20:55,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:20:55,301 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2022-11-25 23:20:55,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-25 23:20:55,302 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:20:55,302 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2022-11-25 23:20:55,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa55a6-9bc1-46d7-974f-9e09b9ba9a82/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 23:20:55,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa55a6-9bc1-46d7-974f-9e09b9ba9a82/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:20:55,511 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:20:55,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:20:55,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1473865425, now seen corresponding path program 2 times [2022-11-25 23:20:55,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:20:55,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071841622] [2022-11-25 23:20:55,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:20:55,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:20:55,522 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 23:20:55,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [113835196] [2022-11-25 23:20:55,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 23:20:55,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:20:55,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa55a6-9bc1-46d7-974f-9e09b9ba9a82/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:20:55,524 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa55a6-9bc1-46d7-974f-9e09b9ba9a82/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:20:55,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa55a6-9bc1-46d7-974f-9e09b9ba9a82/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 23:21:06,890 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-25 23:21:06,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:21:06,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-25 23:21:06,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:21:16,304 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:21:16,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:27:05,039 WARN L233 SmtUtils]: Spent 4.98m on a formula simplification. DAG size of input: 118 DAG size of output: 116 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:27:57,117 WARN L233 SmtUtils]: Spent 26.87s on a formula simplification that was a NOOP. DAG size: 40 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:27:57,118 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:27:57,119 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:27:57,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071841622] [2022-11-25 23:27:57,119 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 23:27:57,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113835196] [2022-11-25 23:27:57,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113835196] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:27:57,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1726719377] [2022-11-25 23:27:57,122 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-25 23:27:57,122 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:27:57,123 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:27:57,123 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:27:57,123 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:27:57,215 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:28:09,160 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '172#(and (= |ULTIMATE.start_gcd_test_~b#1| 0) (<= 0 (+ |ULTIMATE.start_gcd_test_#res#1| 128)) (<= |ULTIMATE.start_gcd_test_#in~a#1| 127) (<= |ULTIMATE.start_main_~x~0#1| 127) (<= |ULTIMATE.start_gcd_test_#in~b#1| 127) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 127) (= |ULTIMATE.start_main_~g~0#1| |ULTIMATE.start_gcd_test_#res#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_gcd_test_#in~b#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 128)) (<= 0 (+ |ULTIMATE.start_gcd_test_#in~a#1| 128)) (<= |ULTIMATE.start_gcd_test_#res#1| 127) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_~g~0#1| |ULTIMATE.start_main_~y~0#1|) 1 0)) (= |ULTIMATE.start_gcd_test_~a#1| |ULTIMATE.start_gcd_test_#res#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 23:28:09,160 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:28:09,161 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 23:28:09,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2022-11-25 23:28:09,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716972198] [2022-11-25 23:28:09,161 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 23:28:09,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 23:28:09,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:28:09,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 23:28:09,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=109, Unknown=9, NotChecked=0, Total=156 [2022-11-25 23:28:09,163 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:28:11,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:29:18,933 WARN L233 SmtUtils]: Spent 54.02s on a formula simplification. DAG size of input: 46 DAG size of output: 30 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:30:18,602 WARN L233 SmtUtils]: Spent 56.06s on a formula simplification. DAG size of input: 70 DAG size of output: 54 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:30:20,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2022-11-25 23:31:14,875 WARN L233 SmtUtils]: Spent 49.88s on a formula simplification. DAG size of input: 59 DAG size of output: 43 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:31:14,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:31:14,877 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2022-11-25 23:31:14,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:31:14,878 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-25 23:31:14,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:31:14,878 INFO L225 Difference]: With dead ends: 8 [2022-11-25 23:31:14,878 INFO L226 Difference]: Without dead ends: 0 [2022-11-25 23:31:14,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 535.2s TimeCoverageRelationStatistics Valid=57, Invalid=168, Unknown=15, NotChecked=0, Total=240 [2022-11-25 23:31:14,880 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 4 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:31:14,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 0 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-11-25 23:31:14,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-25 23:31:14,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-25 23:31:14,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:31:14,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-25 23:31:14,882 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2022-11-25 23:31:14,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:31:14,882 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 23:31:14,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:31:14,882 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-25 23:31:14,882 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-25 23:31:14,885 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-25 23:31:14,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa55a6-9bc1-46d7-974f-9e09b9ba9a82/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 23:31:15,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa55a6-9bc1-46d7-974f-9e09b9ba9a82/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:31:15,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-25 23:32:07,462 WARN L233 SmtUtils]: Spent 52.35s on a formula simplification. DAG size of input: 65 DAG size of output: 63 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-25 23:32:07,466 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-25 23:32:07,467 INFO L895 garLoopResultBuilder]: At program point L27-1(lines 21 33) the Hoare annotation is: (let ((.cse1 (let ((.cse6 (mod (mod (mod (* 255 |ULTIMATE.start_main_~x~0#1|) 256) |ULTIMATE.start_main_~y~0#1|) 256))) (or (<= 0 |ULTIMATE.start_main_~x~0#1|) (not (= (mod |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) 0)) (not (= (mod (mod |ULTIMATE.start_main_~y~0#1| .cse6) 256) 0)) (= .cse6 0)))) (.cse2 (<= |ULTIMATE.start_main_~x~0#1| 127)) (.cse3 (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 128))) (.cse4 (<= |ULTIMATE.start_gcd_test_~a#1| 127))) (or (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse0 (mod |v_ULTIMATE.start_gcd_test_~a#1_25| |ULTIMATE.start_gcd_test_~a#1|))) (and (= .cse0 0) (= |ULTIMATE.start_gcd_test_~b#1| (mod .cse0 256)) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_25|) (<= |v_ULTIMATE.start_gcd_test_~a#1_25| 127)))) .cse1 .cse2 .cse3 .cse4 (< 0 |ULTIMATE.start_gcd_test_~a#1|) (= |ULTIMATE.start_gcd_test_~a#1| |ULTIMATE.start_main_~y~0#1|)) (and .cse1 .cse2 (= |ULTIMATE.start_gcd_test_~b#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_gcd_test_~b#1| 127) .cse3 (or (and (<= 0 |ULTIMATE.start_gcd_test_~a#1|) .cse4 (= (mod |ULTIMATE.start_gcd_test_~a#1| |ULTIMATE.start_gcd_test_~b#1|) 0)) (exists ((|ULTIMATE.start_gcd_test_#in~a#1| Int)) (let ((.cse5 (mod (* 255 |ULTIMATE.start_gcd_test_#in~a#1|) 256))) (and (< |ULTIMATE.start_gcd_test_#in~a#1| 0) (= (+ |ULTIMATE.start_gcd_test_~a#1| 256) .cse5) (<= 0 (+ |ULTIMATE.start_gcd_test_#in~a#1| 128)) (= (mod |ULTIMATE.start_gcd_test_#in~a#1| |ULTIMATE.start_gcd_test_~b#1|) 0) (not (<= .cse5 127)))))) (< 0 |ULTIMATE.start_gcd_test_~b#1|)))) [2022-11-25 23:32:07,467 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2022-11-25 23:32:07,468 INFO L902 garLoopResultBuilder]: At program point L15-2(lines 14 19) the Hoare annotation is: true [2022-11-25 23:32:07,468 INFO L899 garLoopResultBuilder]: For program point L42(lines 42 46) no Hoare annotation was computed. [2022-11-25 23:32:07,468 INFO L902 garLoopResultBuilder]: At program point L42-2(lines 42 46) the Hoare annotation is: true [2022-11-25 23:32:07,468 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-25 23:32:07,469 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2022-11-25 23:32:07,469 INFO L899 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2022-11-25 23:32:07,473 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1] [2022-11-25 23:32:07,476 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 23:32:07,487 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_gcd_test_~a#1_25,QUANTIFIED] [2022-11-25 23:32:07,488 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_gcd_test_~a#1_25,QUANTIFIED] [2022-11-25 23:32:07,488 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_gcd_test_~a#1_25,QUANTIFIED] [2022-11-25 23:32:07,489 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_gcd_test_~a#1_25,QUANTIFIED] [2022-11-25 23:32:07,489 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_gcd_test_#in~a#1,QUANTIFIED] [2022-11-25 23:32:07,489 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_gcd_test_#in~a#1,QUANTIFIED] [2022-11-25 23:32:07,490 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_gcd_test_#in~a#1,QUANTIFIED] [2022-11-25 23:32:07,490 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_gcd_test_#in~a#1,QUANTIFIED] [2022-11-25 23:32:07,490 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_gcd_test_#in~a#1,QUANTIFIED] [2022-11-25 23:32:07,497 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_gcd_test_~a#1_25,QUANTIFIED] [2022-11-25 23:32:07,497 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_gcd_test_~a#1_25,QUANTIFIED] [2022-11-25 23:32:07,498 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_gcd_test_~a#1_25,QUANTIFIED] [2022-11-25 23:32:07,498 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_gcd_test_~a#1_25,QUANTIFIED] [2022-11-25 23:32:07,498 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_gcd_test_#in~a#1,QUANTIFIED] [2022-11-25 23:32:07,499 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_gcd_test_#in~a#1,QUANTIFIED] [2022-11-25 23:32:07,499 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_gcd_test_#in~a#1,QUANTIFIED] [2022-11-25 23:32:07,499 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_gcd_test_#in~a#1,QUANTIFIED] [2022-11-25 23:32:07,499 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_gcd_test_#in~a#1,QUANTIFIED] [2022-11-25 23:32:07,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 11:32:07 BoogieIcfgContainer [2022-11-25 23:32:07,502 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 23:32:07,502 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 23:32:07,503 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 23:32:07,503 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 23:32:07,504 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:20:53" (3/4) ... [2022-11-25 23:32:07,507 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 23:32:07,517 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2022-11-25 23:32:07,518 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-11-25 23:32:07,518 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-25 23:32:07,518 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 23:32:07,519 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 23:32:07,548 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((\exists v_ULTIMATE.start_gcd_test_~a#1_25 : int :: ((v_ULTIMATE.start_gcd_test_~a#1_25 % a == 0 && b == v_ULTIMATE.start_gcd_test_~a#1_25 % a % 256) && 0 <= v_ULTIMATE.start_gcd_test_~a#1_25) && v_ULTIMATE.start_gcd_test_~a#1_25 <= 127) && (((0 <= x || !(x % y == 0)) || !(y % (255 * x % 256 % y % 256) % 256 == 0)) || 255 * x % 256 % y % 256 == 0)) && x <= 127) && 0 <= x + 128) && a <= 127) && 0 < a) && a == y) || (((((((((0 <= x || !(x % y == 0)) || !(y % (255 * x % 256 % y % 256) % 256 == 0)) || 255 * x % 256 % y % 256 == 0) && x <= 127) && b == y) && b <= 127) && 0 <= x + 128) && (((0 <= a && a <= 127) && a % b == 0) || (\exists ULTIMATE.start_gcd_test_#in~a#1 : int :: (((ULTIMATE.start_gcd_test_#in~a#1 < 0 && a + 256 == 255 * ULTIMATE.start_gcd_test_#in~a#1 % 256) && 0 <= ULTIMATE.start_gcd_test_#in~a#1 + 128) && ULTIMATE.start_gcd_test_#in~a#1 % b == 0) && !(255 * ULTIMATE.start_gcd_test_#in~a#1 % 256 <= 127)))) && 0 < b) [2022-11-25 23:32:07,566 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa55a6-9bc1-46d7-974f-9e09b9ba9a82/bin/utaipan-ByfvJB40ur/witness.graphml [2022-11-25 23:32:07,566 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 23:32:07,567 INFO L158 Benchmark]: Toolchain (without parser) took 674944.81ms. Allocated memory was 132.1MB in the beginning and 172.0MB in the end (delta: 39.8MB). Free memory was 87.6MB in the beginning and 61.9MB in the end (delta: 25.6MB). Peak memory consumption was 67.3MB. Max. memory is 16.1GB. [2022-11-25 23:32:07,568 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 132.1MB. Free memory was 73.7MB in the beginning and 73.6MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:32:07,569 INFO L158 Benchmark]: CACSL2BoogieTranslator took 238.86ms. Allocated memory is still 132.1MB. Free memory was 87.2MB in the beginning and 77.1MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 23:32:07,569 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.06ms. Allocated memory is still 132.1MB. Free memory was 77.1MB in the beginning and 75.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 23:32:07,570 INFO L158 Benchmark]: Boogie Preprocessor took 52.61ms. Allocated memory is still 132.1MB. Free memory was 75.2MB in the beginning and 74.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:32:07,570 INFO L158 Benchmark]: RCFGBuilder took 401.14ms. Allocated memory was 132.1MB in the beginning and 172.0MB in the end (delta: 39.8MB). Free memory was 74.1MB in the beginning and 138.9MB in the end (delta: -64.8MB). Peak memory consumption was 15.4MB. Max. memory is 16.1GB. [2022-11-25 23:32:07,571 INFO L158 Benchmark]: TraceAbstraction took 674121.16ms. Allocated memory is still 172.0MB. Free memory was 138.9MB in the beginning and 64.0MB in the end (delta: 74.9MB). Peak memory consumption was 74.9MB. Max. memory is 16.1GB. [2022-11-25 23:32:07,571 INFO L158 Benchmark]: Witness Printer took 64.17ms. Allocated memory is still 172.0MB. Free memory was 64.0MB in the beginning and 61.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 23:32:07,575 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 132.1MB. Free memory was 73.7MB in the beginning and 73.6MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 238.86ms. Allocated memory is still 132.1MB. Free memory was 87.2MB in the beginning and 77.1MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.06ms. Allocated memory is still 132.1MB. Free memory was 77.1MB in the beginning and 75.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.61ms. Allocated memory is still 132.1MB. Free memory was 75.2MB in the beginning and 74.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 401.14ms. Allocated memory was 132.1MB in the beginning and 172.0MB in the end (delta: 39.8MB). Free memory was 74.1MB in the beginning and 138.9MB in the end (delta: -64.8MB). Peak memory consumption was 15.4MB. Max. memory is 16.1GB. * TraceAbstraction took 674121.16ms. Allocated memory is still 172.0MB. Free memory was 138.9MB in the beginning and 64.0MB in the end (delta: 74.9MB). Peak memory consumption was 74.9MB. Max. memory is 16.1GB. * Witness Printer took 64.17ms. Allocated memory is still 172.0MB. Free memory was 64.0MB in the beginning and 61.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_gcd_test_~a#1_25,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_gcd_test_~a#1_25,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_gcd_test_~a#1_25,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_gcd_test_~a#1_25,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_gcd_test_#in~a#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_gcd_test_#in~a#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_gcd_test_#in~a#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_gcd_test_#in~a#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_gcd_test_#in~a#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_gcd_test_~a#1_25,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_gcd_test_~a#1_25,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_gcd_test_~a#1_25,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_gcd_test_~a#1_25,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_gcd_test_#in~a#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_gcd_test_#in~a#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_gcd_test_#in~a#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_gcd_test_#in~a#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_gcd_test_#in~a#1,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 674.0s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 185.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 52.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 4.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 20 SdHoareTripleChecker+Invalid, 4.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 49 IncrementalHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 7 mSDtfsCounter, 49 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 535.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 7 NumberOfFragments, 178 HoareAnnotationTreeSize, 3 FomulaSimplifications, 10 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 12 FormulaSimplificationTreeSizeReductionInter, 52.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 11.4s SatisfiabilityAnalysisTime, 410.6s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 26 ConstructedInterpolants, 2 QuantifiedInterpolants, 1297 SizeOfPredicates, 15 NumberOfNonLiveVariables, 228 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 2/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 21]: Loop Invariant [2022-11-25 23:32:07,596 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_gcd_test_~a#1_25,QUANTIFIED] [2022-11-25 23:32:07,596 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_gcd_test_~a#1_25,QUANTIFIED] [2022-11-25 23:32:07,597 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_gcd_test_~a#1_25,QUANTIFIED] [2022-11-25 23:32:07,597 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_gcd_test_~a#1_25,QUANTIFIED] [2022-11-25 23:32:07,597 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_gcd_test_#in~a#1,QUANTIFIED] [2022-11-25 23:32:07,598 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_gcd_test_#in~a#1,QUANTIFIED] [2022-11-25 23:32:07,598 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_gcd_test_#in~a#1,QUANTIFIED] [2022-11-25 23:32:07,598 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_gcd_test_#in~a#1,QUANTIFIED] [2022-11-25 23:32:07,598 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_gcd_test_#in~a#1,QUANTIFIED] [2022-11-25 23:32:07,600 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_gcd_test_~a#1_25,QUANTIFIED] [2022-11-25 23:32:07,600 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_gcd_test_~a#1_25,QUANTIFIED] [2022-11-25 23:32:07,600 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_gcd_test_~a#1_25,QUANTIFIED] [2022-11-25 23:32:07,601 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_gcd_test_~a#1_25,QUANTIFIED] [2022-11-25 23:32:07,601 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_gcd_test_#in~a#1,QUANTIFIED] [2022-11-25 23:32:07,601 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_gcd_test_#in~a#1,QUANTIFIED] [2022-11-25 23:32:07,601 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_gcd_test_#in~a#1,QUANTIFIED] [2022-11-25 23:32:07,602 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_gcd_test_#in~a#1,QUANTIFIED] [2022-11-25 23:32:07,602 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_gcd_test_#in~a#1,QUANTIFIED] Derived loop invariant: (((((((\exists v_ULTIMATE.start_gcd_test_~a#1_25 : int :: ((v_ULTIMATE.start_gcd_test_~a#1_25 % a == 0 && b == v_ULTIMATE.start_gcd_test_~a#1_25 % a % 256) && 0 <= v_ULTIMATE.start_gcd_test_~a#1_25) && v_ULTIMATE.start_gcd_test_~a#1_25 <= 127) && (((0 <= x || !(x % y == 0)) || !(y % (255 * x % 256 % y % 256) % 256 == 0)) || 255 * x % 256 % y % 256 == 0)) && x <= 127) && 0 <= x + 128) && a <= 127) && 0 < a) && a == y) || (((((((((0 <= x || !(x % y == 0)) || !(y % (255 * x % 256 % y % 256) % 256 == 0)) || 255 * x % 256 % y % 256 == 0) && x <= 127) && b == y) && b <= 127) && 0 <= x + 128) && (((0 <= a && a <= 127) && a % b == 0) || (\exists ULTIMATE.start_gcd_test_#in~a#1 : int :: (((ULTIMATE.start_gcd_test_#in~a#1 < 0 && a + 256 == 255 * ULTIMATE.start_gcd_test_#in~a#1 % 256) && 0 <= ULTIMATE.start_gcd_test_#in~a#1 + 128) && ULTIMATE.start_gcd_test_#in~a#1 % b == 0) && !(255 * ULTIMATE.start_gcd_test_#in~a#1 % 256 <= 127)))) && 0 < b) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-25 23:32:07,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa55a6-9bc1-46d7-974f-9e09b9ba9a82/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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