./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/4NestedWith3Variables-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85b14f2-5801-42d2-bbf3-c463292439ad/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85b14f2-5801-42d2-bbf3-c463292439ad/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85b14f2-5801-42d2-bbf3-c463292439ad/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85b14f2-5801-42d2-bbf3-c463292439ad/bin/uautomizer-J5u9QxTXDZ/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/4NestedWith3Variables-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85b14f2-5801-42d2-bbf3-c463292439ad/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85b14f2-5801-42d2-bbf3-c463292439ad/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b39ec4b52f8da315ff57d8e97152c727a55203720ed4bc216d0daa6b94e35d48 --- 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-dbf71c6-m [2022-10-17 10:13:14,745 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:13:14,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:13:14,804 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:13:14,805 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:13:14,809 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:13:14,812 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:13:14,817 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:13:14,820 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:13:14,826 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:13:14,827 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:13:14,830 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:13:14,830 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:13:14,833 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:13:14,835 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:13:14,838 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:13:14,840 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:13:14,841 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:13:14,843 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:13:14,851 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:13:14,853 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:13:14,855 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:13:14,858 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:13:14,860 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:13:14,870 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:13:14,871 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:13:14,872 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:13:14,874 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:13:14,874 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:13:14,876 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:13:14,876 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:13:14,878 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:13:14,881 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:13:14,883 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:13:14,884 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:13:14,885 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:13:14,886 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:13:14,886 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:13:14,886 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:13:14,888 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:13:14,888 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:13:14,890 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85b14f2-5801-42d2-bbf3-c463292439ad/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-10-17 10:13:14,937 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:13:14,938 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:13:14,939 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:13:14,939 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:13:14,941 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:13:14,941 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:13:14,941 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:13:14,942 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-10-17 10:13:14,942 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-10-17 10:13:14,943 INFO L138 SettingsManager]: * Use old map elimination=false [2022-10-17 10:13:14,944 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-10-17 10:13:14,944 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-10-17 10:13:14,945 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-10-17 10:13:14,945 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:13:14,946 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 10:13:14,946 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:13:14,946 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:13:14,947 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-10-17 10:13:14,947 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-10-17 10:13:14,947 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-10-17 10:13:14,948 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:13:14,955 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-10-17 10:13:14,955 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:13:14,957 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-10-17 10:13:14,958 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:13:14,958 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:13:14,959 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:13:14,959 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:13:14,960 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-10-17 10:13:14,961 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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_e85b14f2-5801-42d2-bbf3-c463292439ad/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85b14f2-5801-42d2-bbf3-c463292439ad/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b39ec4b52f8da315ff57d8e97152c727a55203720ed4bc216d0daa6b94e35d48 [2022-10-17 10:13:15,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:13:15,259 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:13:15,263 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:13:15,265 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:13:15,266 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:13:15,267 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85b14f2-5801-42d2-bbf3-c463292439ad/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/termination-crafted/4NestedWith3Variables-1.c [2022-10-17 10:13:15,332 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85b14f2-5801-42d2-bbf3-c463292439ad/bin/uautomizer-J5u9QxTXDZ/data/9ab3dedd3/24536678e36c408c82089b36a7f84f9b/FLAG76b61a67d [2022-10-17 10:13:15,761 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:13:15,762 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85b14f2-5801-42d2-bbf3-c463292439ad/sv-benchmarks/c/termination-crafted/4NestedWith3Variables-1.c [2022-10-17 10:13:15,767 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85b14f2-5801-42d2-bbf3-c463292439ad/bin/uautomizer-J5u9QxTXDZ/data/9ab3dedd3/24536678e36c408c82089b36a7f84f9b/FLAG76b61a67d [2022-10-17 10:13:16,160 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85b14f2-5801-42d2-bbf3-c463292439ad/bin/uautomizer-J5u9QxTXDZ/data/9ab3dedd3/24536678e36c408c82089b36a7f84f9b [2022-10-17 10:13:16,162 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:13:16,164 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:13:16,166 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:13:16,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:13:16,170 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:13:16,170 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:13:16" (1/1) ... [2022-10-17 10:13:16,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b4bcd3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:16, skipping insertion in model container [2022-10-17 10:13:16,172 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:13:16" (1/1) ... [2022-10-17 10:13:16,179 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:13:16,194 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:13:16,409 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:13:16,417 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:13:16,446 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:13:16,460 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:13:16,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:16 WrapperNode [2022-10-17 10:13:16,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:13:16,464 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:13:16,464 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:13:16,464 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:13:16,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:16" (1/1) ... [2022-10-17 10:13:16,481 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:16" (1/1) ... [2022-10-17 10:13:16,505 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 31 [2022-10-17 10:13:16,506 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:13:16,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:13:16,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:13:16,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:13:16,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:16" (1/1) ... [2022-10-17 10:13:16,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:16" (1/1) ... [2022-10-17 10:13:16,530 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:16" (1/1) ... [2022-10-17 10:13:16,530 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:16" (1/1) ... [2022-10-17 10:13:16,533 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:16" (1/1) ... [2022-10-17 10:13:16,538 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:16" (1/1) ... [2022-10-17 10:13:16,541 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:16" (1/1) ... [2022-10-17 10:13:16,542 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:16" (1/1) ... [2022-10-17 10:13:16,543 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:13:16,545 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:13:16,545 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:13:16,545 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:13:16,546 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:16" (1/1) ... [2022-10-17 10:13:16,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:16,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85b14f2-5801-42d2-bbf3-c463292439ad/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:16,576 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85b14f2-5801-42d2-bbf3-c463292439ad/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:13:16,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85b14f2-5801-42d2-bbf3-c463292439ad/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-10-17 10:13:16,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:13:16,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:13:16,693 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:13:16,695 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:13:16,782 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:13:16,790 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:13:16,790 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 10:13:16,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:13:16 BoogieIcfgContainer [2022-10-17 10:13:16,793 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:13:16,794 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-10-17 10:13:16,794 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-10-17 10:13:16,803 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-10-17 10:13:16,804 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-10-17 10:13:16,804 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 17.10 10:13:16" (1/3) ... [2022-10-17 10:13:16,805 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7152bbde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.10 10:13:16, skipping insertion in model container [2022-10-17 10:13:16,806 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-10-17 10:13:16,806 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:16" (2/3) ... [2022-10-17 10:13:16,806 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7152bbde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.10 10:13:16, skipping insertion in model container [2022-10-17 10:13:16,807 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-10-17 10:13:16,807 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:13:16" (3/3) ... [2022-10-17 10:13:16,808 INFO L332 chiAutomizerObserver]: Analyzing ICFG 4NestedWith3Variables-1.c [2022-10-17 10:13:16,865 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-10-17 10:13:16,866 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-10-17 10:13:16,866 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-10-17 10:13:16,866 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-10-17 10:13:16,866 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-10-17 10:13:16,867 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-10-17 10:13:16,867 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-10-17 10:13:16,867 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-10-17 10:13:16,872 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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) [2022-10-17 10:13:16,890 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-10-17 10:13:16,890 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:13:16,891 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:13:16,896 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-10-17 10:13:16,897 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-10-17 10:13:16,897 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-10-17 10:13:16,897 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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) [2022-10-17 10:13:16,899 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-10-17 10:13:16,899 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:13:16,899 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:13:16,899 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-10-17 10:13:16,900 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-10-17 10:13:16,906 INFO L748 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~a~0#1, main_~b~0#1, main_~q~0#1, main_~olda~0#1;havoc main_~a~0#1;havoc main_~b~0#1;havoc main_~q~0#1;havoc main_~olda~0#1;main_~q~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~a~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~b~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 6#L23true assume !!(-524287 <= main_~q~0#1 && main_~q~0#1 <= 524287); 9#L24true assume !!(-524287 <= main_~a~0#1 && main_~a~0#1 <= 524287); 5#L25true assume !!(-524287 <= main_~b~0#1 && main_~b~0#1 <= 524287); 4#L26-2true [2022-10-17 10:13:16,907 INFO L750 eck$LassoCheckResult]: Loop: 4#L26-2true assume !!(main_~q~0#1 > 0);main_~q~0#1 := main_~q~0#1 + main_~a~0#1 - 1;main_~olda~0#1 := main_~a~0#1;main_~a~0#1 := 3 * main_~olda~0#1 - 4 * main_~b~0#1;main_~b~0#1 := 4 * main_~olda~0#1 + 3 * main_~b~0#1; 4#L26-2true [2022-10-17 10:13:16,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:13:16,917 INFO L85 PathProgramCache]: Analyzing trace with hash 28695849, now seen corresponding path program 1 times [2022-10-17 10:13:16,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:13:16,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927136512] [2022-10-17 10:13:16,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:13:16,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:13:17,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:13:17,036 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:13:17,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:13:17,074 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:13:17,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:13:17,079 INFO L85 PathProgramCache]: Analyzing trace with hash 57, now seen corresponding path program 1 times [2022-10-17 10:13:17,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:13:17,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67316721] [2022-10-17 10:13:17,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:13:17,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:13:17,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:13:17,116 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:13:17,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:13:17,132 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:13:17,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:13:17,134 INFO L85 PathProgramCache]: Analyzing trace with hash 889571345, now seen corresponding path program 1 times [2022-10-17 10:13:17,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:13:17,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420111788] [2022-10-17 10:13:17,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:13:17,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:13:17,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:13:17,164 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:13:17,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:13:17,186 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:13:17,348 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:13:17,355 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:13:17,355 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:13:17,356 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:13:17,356 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-10-17 10:13:17,356 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:17,356 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:13:17,356 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:13:17,357 INFO L133 ssoRankerPreferences]: Filename of dumped script: 4NestedWith3Variables-1.c_Iteration1_Loop [2022-10-17 10:13:17,357 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:13:17,357 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:13:17,393 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:13:17,425 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:13:17,429 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:13:17,570 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:13:17,571 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-10-17 10:13:17,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:17,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85b14f2-5801-42d2-bbf3-c463292439ad/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:17,582 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85b14f2-5801-42d2-bbf3-c463292439ad/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:13:17,588 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:13:17,589 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:13:17,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85b14f2-5801-42d2-bbf3-c463292439ad/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-10-17 10:13:17,610 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:13:17,610 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:13:17,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85b14f2-5801-42d2-bbf3-c463292439ad/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:13:17,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:17,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85b14f2-5801-42d2-bbf3-c463292439ad/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:17,647 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85b14f2-5801-42d2-bbf3-c463292439ad/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:13:17,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85b14f2-5801-42d2-bbf3-c463292439ad/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-10-17 10:13:17,651 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:13:17,651 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:13:17,686 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:13:17,687 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:13:17,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85b14f2-5801-42d2-bbf3-c463292439ad/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:13:17,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:17,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85b14f2-5801-42d2-bbf3-c463292439ad/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:17,718 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85b14f2-5801-42d2-bbf3-c463292439ad/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:13:17,727 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:13:17,727 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:13:17,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85b14f2-5801-42d2-bbf3-c463292439ad/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-10-17 10:13:17,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85b14f2-5801-42d2-bbf3-c463292439ad/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:13:17,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:17,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85b14f2-5801-42d2-bbf3-c463292439ad/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:17,797 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85b14f2-5801-42d2-bbf3-c463292439ad/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:13:17,810 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-10-17 10:13:17,810 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:13:17,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e85b14f2-5801-42d2-bbf3-c463292439ad/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process