./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8 --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 727b654585befeb7272249307a5de272b17c4e2d2d1afa67fd11f4eb185d7508 --- 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-e04fb08 [2022-11-16 11:57:22,597 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:57:22,599 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:57:22,618 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:57:22,618 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:57:22,619 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:57:22,620 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:57:22,622 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:57:22,624 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:57:22,625 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:57:22,626 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:57:22,627 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:57:22,628 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:57:22,629 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:57:22,630 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:57:22,631 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:57:22,632 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:57:22,633 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:57:22,635 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:57:22,637 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:57:22,638 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:57:22,642 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:57:22,643 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:57:22,644 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:57:22,648 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:57:22,648 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:57:22,648 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:57:22,649 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:57:22,650 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:57:22,651 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:57:22,651 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:57:22,652 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:57:22,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:57:22,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:57:22,664 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:57:22,665 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:57:22,665 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:57:22,666 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:57:22,666 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:57:22,667 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:57:22,668 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:57:22,672 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-11-16 11:57:22,723 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:57:22,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:57:22,723 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:57:22,723 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:57:22,724 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:57:22,725 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:57:22,725 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:57:22,725 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-16 11:57:22,725 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-16 11:57:22,725 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-16 11:57:22,726 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-16 11:57:22,726 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-16 11:57:22,726 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-16 11:57:22,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:57:22,726 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:57:22,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:57:22,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:57:22,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-16 11:57:22,727 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-16 11:57:22,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-16 11:57:22,728 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:57:22,728 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-16 11:57:22,728 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:57:22,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-16 11:57:22,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:57:22,729 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:57:22,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:57:22,729 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:57:22,730 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-16 11:57:22,730 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_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 727b654585befeb7272249307a5de272b17c4e2d2d1afa67fd11f4eb185d7508 [2022-11-16 11:57:23,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:57:23,076 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:57:23,080 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:57:23,082 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:57:23,084 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:57:23,086 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c [2022-11-16 11:57:23,149 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/data/0cc6f8dd2/3304545d57394100ae4e27261848c1cb/FLAG629656825 [2022-11-16 11:57:23,602 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:57:23,603 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c [2022-11-16 11:57:23,608 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/data/0cc6f8dd2/3304545d57394100ae4e27261848c1cb/FLAG629656825 [2022-11-16 11:57:24,001 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/data/0cc6f8dd2/3304545d57394100ae4e27261848c1cb [2022-11-16 11:57:24,004 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:57:24,007 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:57:24,009 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:57:24,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:57:24,014 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:57:24,015 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:57:24" (1/1) ... [2022-11-16 11:57:24,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4447dcea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:24, skipping insertion in model container [2022-11-16 11:57:24,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:57:24" (1/1) ... [2022-11-16 11:57:24,023 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:57:24,035 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:57:24,209 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:57:24,213 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:57:24,227 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:57:24,240 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:57:24,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:24 WrapperNode [2022-11-16 11:57:24,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:57:24,242 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:57:24,242 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:57:24,243 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:57:24,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:24" (1/1) ... [2022-11-16 11:57:24,258 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:24" (1/1) ... [2022-11-16 11:57:24,277 INFO L138 Inliner]: procedures = 6, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 6 [2022-11-16 11:57:24,277 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:57:24,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:57:24,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:57:24,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:57:24,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:24" (1/1) ... [2022-11-16 11:57:24,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:24" (1/1) ... [2022-11-16 11:57:24,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:24" (1/1) ... [2022-11-16 11:57:24,291 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:24" (1/1) ... [2022-11-16 11:57:24,293 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:24" (1/1) ... [2022-11-16 11:57:24,295 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:24" (1/1) ... [2022-11-16 11:57:24,295 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:24" (1/1) ... [2022-11-16 11:57:24,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:24" (1/1) ... [2022-11-16 11:57:24,298 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:57:24,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:57:24,299 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:57:24,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:57:24,300 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:24" (1/1) ... [2022-11-16 11:57:24,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:57:24,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:24,337 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:57:24,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-16 11:57:24,389 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-16 11:57:24,389 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-16 11:57:24,389 INFO L130 BoogieDeclarations]: Found specification of procedure g [2022-11-16 11:57:24,391 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2022-11-16 11:57:24,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:57:24,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:57:24,470 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:57:24,472 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:57:24,617 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:57:24,626 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:57:24,626 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 11:57:24,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:57:24 BoogieIcfgContainer [2022-11-16 11:57:24,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:57:24,629 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-16 11:57:24,629 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-16 11:57:24,634 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-16 11:57:24,635 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-16 11:57:24,635 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 16.11 11:57:24" (1/3) ... [2022-11-16 11:57:24,637 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@48f0e22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.11 11:57:24, skipping insertion in model container [2022-11-16 11:57:24,637 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-16 11:57:24,637 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:24" (2/3) ... [2022-11-16 11:57:24,637 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@48f0e22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.11 11:57:24, skipping insertion in model container [2022-11-16 11:57:24,638 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-16 11:57:24,638 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:57:24" (3/3) ... [2022-11-16 11:57:24,639 INFO L332 chiAutomizerObserver]: Analyzing ICFG MutualRecursion_1a.c [2022-11-16 11:57:24,709 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-16 11:57:24,709 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-16 11:57:24,709 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-16 11:57:24,709 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-16 11:57:24,709 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-16 11:57:24,710 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-16 11:57:24,710 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-16 11:57:24,710 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-16 11:57:24,714 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 21 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 11:57:24,738 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-11-16 11:57:24,739 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:57:24,739 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:57:24,746 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-16 11:57:24,746 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2022-11-16 11:57:24,746 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-16 11:57:24,746 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 21 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 11:57:24,751 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-11-16 11:57:24,751 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:57:24,751 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:57:24,752 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-16 11:57:24,752 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2022-11-16 11:57:24,759 INFO L748 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 13#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~ret5#1, main_~x~0#1;main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 12#L26true call main_#t~ret5#1 := g(main_~x~0#1);< 14#gENTRYtrue [2022-11-16 11:57:24,760 INFO L750 eck$LassoCheckResult]: Loop: 14#gENTRYtrue ~x := #in~x; 6#L19true assume !(~x <= 0); 11#L20true call #t~ret2 := f(~x - 1);< 15#fENTRYtrue ~x := #in~x; 18#L13true assume !(~x <= 0); 9#L14true call #t~ret0 := g(~x);< 14#gENTRYtrue [2022-11-16 11:57:24,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:24,765 INFO L85 PathProgramCache]: Analyzing trace with hash 47743, now seen corresponding path program 1 times [2022-11-16 11:57:24,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:24,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269302855] [2022-11-16 11:57:24,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:24,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:24,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:57:24,871 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:57:24,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:57:24,895 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:57:24,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:24,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1158065693, now seen corresponding path program 1 times [2022-11-16 11:57:24,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:24,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575441078] [2022-11-16 11:57:24,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:24,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:24,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:57:24,928 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:57:24,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:57:24,946 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:57:24,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:24,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1788538341, now seen corresponding path program 1 times [2022-11-16 11:57:24,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:24,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231990190] [2022-11-16 11:57:24,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:24,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:24,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:57:24,971 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:57:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:57:24,991 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:57:25,250 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 11:57:25,251 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 11:57:25,251 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 11:57:25,252 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 11:57:25,252 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-16 11:57:25,252 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:57:25,252 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 11:57:25,252 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 11:57:25,253 INFO L133 ssoRankerPreferences]: Filename of dumped script: MutualRecursion_1a.c_Iteration1_Loop [2022-11-16 11:57:25,253 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 11:57:25,253 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 11:57:25,276 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:57:25,292 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:57:25,301 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:57:25,311 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:57:25,316 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:57:25,332 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:57:25,343 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:57:25,355 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:57:25,443 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 11:57:25,444 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-16 11:57:25,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:57:25,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:25,450 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:57:25,459 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 11:57:25,459 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:57:25,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-16 11:57:25,496 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 11:57:25,496 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f_#res=0} Honda state: {f_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 11:57:25,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:57:25,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:57:25,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:25,509 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:57:25,518 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 11:57:25,519 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:57:25,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-16 11:57:25,555 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 11:57:25,555 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret2=0} Honda state: {g_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 11:57:25,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:57:25,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:57:25,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:25,567 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:57:25,577 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 11:57:25,578 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:57:25,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-16 11:57:25,607 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 11:57:25,607 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret3=0} Honda state: {g_#t~ret3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 11:57:25,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:57:25,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:57:25,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:25,621 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:57:25,630 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 11:57:25,631 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:57:25,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-16 11:57:25,663 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 11:57:25,663 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#res=0} Honda state: {g_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 11:57:25,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:57:25,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:57:25,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:25,674 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:57:25,683 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 11:57:25,683 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:57:25,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-16 11:57:25,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:57:25,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:57:25,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:25,717 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:57:25,725 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-16 11:57:25,725 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:57:25,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-16 11:57:25,815 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-16 11:57:25,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:57:25,825 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 11:57:25,825 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 11:57:25,825 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 11:57:25,826 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 11:57:25,826 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-16 11:57:25,826 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:57:25,826 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 11:57:25,826 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 11:57:25,826 INFO L133 ssoRankerPreferences]: Filename of dumped script: MutualRecursion_1a.c_Iteration1_Loop [2022-11-16 11:57:25,826 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 11:57:25,826 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 11:57:25,828 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:57:25,833 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:57:25,836 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:57:25,841 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:57:25,849 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:57:25,853 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:57:25,856 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:57:25,864 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:57:25,904 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 11:57:25,909 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-16 11:57:25,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:57:25,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:25,912 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:57:25,927 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-16 11:57:25,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-16 11:57:25,940 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 11:57:25,940 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 11:57:25,941 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 11:57:25,941 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 11:57:25,941 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 11:57:25,943 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 11:57:25,943 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 11:57:25,953 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 11:57:25,956 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2022-11-16 11:57:25,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:57:25,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:25,961 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:57:25,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-16 11:57:25,964 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-16 11:57:25,977 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 11:57:25,977 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 11:57:25,977 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 11:57:25,977 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 11:57:25,977 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 11:57:25,979 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 11:57:25,980 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 11:57:25,990 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 11:57:25,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-11-16 11:57:26,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:57:26,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:26,006 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:57:26,035 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-16 11:57:26,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-16 11:57:26,048 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 11:57:26,048 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 11:57:26,048 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 11:57:26,048 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 11:57:26,048 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 11:57:26,049 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 11:57:26,049 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 11:57:26,059 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 11:57:26,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-11-16 11:57:26,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:57:26,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:26,068 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:57:26,082 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-16 11:57:26,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-16 11:57:26,098 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 11:57:26,098 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 11:57:26,098 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 11:57:26,098 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 11:57:26,099 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 11:57:26,100 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 11:57:26,100 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 11:57:26,110 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 11:57:26,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-16 11:57:26,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:57:26,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:26,122 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:57:26,127 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-16 11:57:26,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-11-16 11:57:26,140 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 11:57:26,141 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 11:57:26,141 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 11:57:26,141 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 11:57:26,141 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 11:57:26,142 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 11:57:26,142 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 11:57:26,151 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 11:57:26,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-11-16 11:57:26,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:57:26,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:26,162 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:57:26,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-16 11:57:26,169 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-16 11:57:26,183 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 11:57:26,183 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 11:57:26,183 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 11:57:26,184 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 11:57:26,184 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 11:57:26,188 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 11:57:26,188 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 11:57:26,198 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 11:57:26,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-16 11:57:26,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:57:26,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:26,213 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:57:26,223 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-16 11:57:26,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-16 11:57:26,243 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 11:57:26,243 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 11:57:26,243 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 11:57:26,243 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 11:57:26,243 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 11:57:26,245 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 11:57:26,245 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 11:57:26,263 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-16 11:57:26,266 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-16 11:57:26,267 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-16 11:57:26,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:57:26,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:26,269 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:57:26,283 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-16 11:57:26,283 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-16 11:57:26,283 INFO L513 LassoAnalysis]: Proved termination. [2022-11-16 11:57:26,284 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(g_#in~x) = 1*g_#in~x Supporting invariants [] [2022-11-16 11:57:26,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-16 11:57:26,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-11-16 11:57:26,298 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-16 11:57:26,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:26,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:26,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:57:26,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:57:26,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:26,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 11:57:26,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:57:26,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:26,589 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2022-11-16 11:57:26,592 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 21 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:26,827 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 21 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5). Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 63 states and 82 transitions. Complement of second has 24 states. [2022-11-16 11:57:26,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2022-11-16 11:57:26,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:26,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 15 transitions. [2022-11-16 11:57:26,840 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 15 transitions. Stem has 3 letters. Loop has 6 letters. [2022-11-16 11:57:26,841 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:57:26,842 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 15 transitions. Stem has 9 letters. Loop has 6 letters. [2022-11-16 11:57:26,842 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:57:26,842 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 15 transitions. Stem has 3 letters. Loop has 12 letters. [2022-11-16 11:57:26,843 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:57:26,843 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 82 transitions. [2022-11-16 11:57:26,859 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-11-16 11:57:26,870 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 46 states and 60 transitions. [2022-11-16 11:57:26,871 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2022-11-16 11:57:26,871 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2022-11-16 11:57:26,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 60 transitions. [2022-11-16 11:57:26,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 11:57:26,874 INFO L218 hiAutomatonCegarLoop]: Abstraction has 46 states and 60 transitions. [2022-11-16 11:57:26,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states and 60 transitions. [2022-11-16 11:57:26,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2022-11-16 11:57:26,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 29 states have internal predecessors, (32), 12 states have call successors, (12), 8 states have call predecessors, (12), 6 states have return successors, (13), 7 states have call predecessors, (13), 10 states have call successors, (13) [2022-11-16 11:57:26,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2022-11-16 11:57:26,918 INFO L240 hiAutomatonCegarLoop]: Abstraction has 45 states and 57 transitions. [2022-11-16 11:57:26,918 INFO L428 stractBuchiCegarLoop]: Abstraction has 45 states and 57 transitions. [2022-11-16 11:57:26,918 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-16 11:57:26,919 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 45 states and 57 transitions. [2022-11-16 11:57:26,923 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-11-16 11:57:26,923 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:57:26,923 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:57:26,925 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:26,925 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:26,926 INFO L748 eck$LassoCheckResult]: Stem: 173#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 174#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~ret5#1, main_~x~0#1;main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 188#L26 call main_#t~ret5#1 := g(main_~x~0#1);< 190#gENTRY ~x := #in~x; 195#L19 assume !(~x <= 0); 167#L20 call #t~ret2 := f(~x - 1);< 189#fENTRY ~x := #in~x; 199#L13 assume !(~x <= 0); 180#L14 call #t~ret0 := g(~x);< 185#gENTRY ~x := #in~x; 179#L19 assume ~x <= 0;#res := 0; 181#gFINAL assume true; 186#gEXIT >#27#return; 175#L14-1 [2022-11-16 11:57:26,927 INFO L750 eck$LassoCheckResult]: Loop: 175#L14-1 call #t~ret1 := g(1 + ~x);< 178#gENTRY ~x := #in~x; 203#L19 assume !(~x <= 0); 176#L20 call #t~ret2 := f(~x - 1);< 201#fENTRY ~x := #in~x; 200#L13 assume !(~x <= 0); 184#L14 call #t~ret0 := g(~x);< 178#gENTRY ~x := #in~x; 203#L19 assume ~x <= 0;#res := 0; 198#gFINAL assume true; 202#gEXIT >#27#return; 175#L14-1 [2022-11-16 11:57:26,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:26,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1510789928, now seen corresponding path program 1 times [2022-11-16 11:57:26,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:26,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362686248] [2022-11-16 11:57:26,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:26,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:26,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:27,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:57:27,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:27,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:57:27,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:27,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362686248] [2022-11-16 11:57:27,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362686248] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:27,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:27,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:57:27,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016981350] [2022-11-16 11:57:27,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:27,090 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-16 11:57:27,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:27,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1553130012, now seen corresponding path program 1 times [2022-11-16 11:57:27,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:27,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592369197] [2022-11-16 11:57:27,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:27,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:27,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:27,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:57:27,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:27,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:57:27,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:27,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592369197] [2022-11-16 11:57:27,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592369197] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:27,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:27,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:57:27,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904021013] [2022-11-16 11:57:27,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:27,169 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-16 11:57:27,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:27,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:57:27,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:57:27,174 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. cyclomatic complexity: 14 Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 11:57:27,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:57:27,263 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2022-11-16 11:57:27,264 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 60 transitions. [2022-11-16 11:57:27,269 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-11-16 11:57:27,273 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 45 states and 56 transitions. [2022-11-16 11:57:27,273 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2022-11-16 11:57:27,273 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2022-11-16 11:57:27,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 56 transitions. [2022-11-16 11:57:27,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 11:57:27,274 INFO L218 hiAutomatonCegarLoop]: Abstraction has 45 states and 56 transitions. [2022-11-16 11:57:27,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 56 transitions. [2022-11-16 11:57:27,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-11-16 11:57:27,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 29 states have internal predecessors, (30), 12 states have call successors, (12), 8 states have call predecessors, (12), 6 states have return successors, (14), 7 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-16 11:57:27,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2022-11-16 11:57:27,286 INFO L240 hiAutomatonCegarLoop]: Abstraction has 45 states and 56 transitions. [2022-11-16 11:57:27,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:57:27,290 INFO L428 stractBuchiCegarLoop]: Abstraction has 45 states and 56 transitions. [2022-11-16 11:57:27,290 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-16 11:57:27,290 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 45 states and 56 transitions. [2022-11-16 11:57:27,294 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-11-16 11:57:27,294 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:57:27,294 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:57:27,299 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:27,300 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:27,302 INFO L748 eck$LassoCheckResult]: Stem: 296#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 297#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~ret5#1, main_~x~0#1;main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 299#L26 call main_#t~ret5#1 := g(main_~x~0#1);< 305#gENTRY ~x := #in~x; 306#L19 assume !(~x <= 0); 282#L20 call #t~ret2 := f(~x - 1);< 304#fENTRY ~x := #in~x; 313#L13 assume !(~x <= 0); 293#L14 call #t~ret0 := g(~x);< 302#gENTRY ~x := #in~x; 292#L19 assume !(~x <= 0); 294#L20 call #t~ret2 := f(~x - 1);< 303#fENTRY ~x := #in~x; 322#L13 assume ~x <= 0;#res := 0; 321#fFINAL assume true; 320#fEXIT >#31#return; 279#L20-1 call #t~ret3 := f(~x - 2);< 307#fENTRY ~x := #in~x; 308#L13 assume ~x <= 0;#res := 0; 278#fFINAL assume true; 280#fEXIT >#33#return; 285#L20-2 #res := #t~ret2 + #t~ret3;havoc #t~ret2;havoc #t~ret3; 298#gFINAL assume true; 301#gEXIT >#27#return; 288#L14-1 [2022-11-16 11:57:27,302 INFO L750 eck$LassoCheckResult]: Loop: 288#L14-1 call #t~ret1 := g(1 + ~x);< 291#gENTRY ~x := #in~x; 317#L19 assume !(~x <= 0); 290#L20 call #t~ret2 := f(~x - 1);< 316#fENTRY ~x := #in~x; 314#L13 assume !(~x <= 0); 300#L14 call #t~ret0 := g(~x);< 291#gENTRY ~x := #in~x; 317#L19 assume !(~x <= 0); 290#L20 call #t~ret2 := f(~x - 1);< 316#fENTRY ~x := #in~x; 314#L13 assume ~x <= 0;#res := 0; 315#fFINAL assume true; 319#fEXIT >#31#return; 289#L20-1 call #t~ret3 := f(~x - 2);< 316#fENTRY ~x := #in~x; 314#L13 assume ~x <= 0;#res := 0; 315#fFINAL assume true; 319#fEXIT >#33#return; 285#L20-2 #res := #t~ret2 + #t~ret3;havoc #t~ret2;havoc #t~ret3; 298#gFINAL assume true; 301#gEXIT >#27#return; 288#L14-1 [2022-11-16 11:57:27,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:27,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1263731607, now seen corresponding path program 1 times [2022-11-16 11:57:27,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:27,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93401374] [2022-11-16 11:57:27,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:27,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:27,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:57:27,327 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:57:27,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:57:27,360 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:57:27,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:27,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1714809691, now seen corresponding path program 1 times [2022-11-16 11:57:27,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:27,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755334845] [2022-11-16 11:57:27,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:27,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:27,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:57:27,371 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:57:27,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:57:27,400 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:57:27,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:27,401 INFO L85 PathProgramCache]: Analyzing trace with hash 790919793, now seen corresponding path program 1 times [2022-11-16 11:57:27,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:27,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687024191] [2022-11-16 11:57:27,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:27,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:27,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:57:27,417 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:57:27,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:57:27,435 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:57:27,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-16 11:57:28,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:57:28,290 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:57:28,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:57:28,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 16.11 11:57:28 BoogieIcfgContainer [2022-11-16 11:57:28,334 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-16 11:57:28,335 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 11:57:28,335 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 11:57:28,335 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 11:57:28,336 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:57:24" (3/4) ... [2022-11-16 11:57:28,339 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-11-16 11:57:28,376 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 11:57:28,376 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 11:57:28,377 INFO L158 Benchmark]: Toolchain (without parser) took 4369.90ms. Allocated memory is still 132.1MB. Free memory was 93.5MB in the beginning and 65.8MB in the end (delta: 27.7MB). Peak memory consumption was 26.5MB. Max. memory is 16.1GB. [2022-11-16 11:57:28,377 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 132.1MB. Free memory is still 110.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:57:28,378 INFO L158 Benchmark]: CACSL2BoogieTranslator took 232.21ms. Allocated memory is still 132.1MB. Free memory was 93.3MB in the beginning and 108.1MB in the end (delta: -14.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 11:57:28,378 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.38ms. Allocated memory is still 132.1MB. Free memory was 108.1MB in the beginning and 106.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:57:28,379 INFO L158 Benchmark]: Boogie Preprocessor took 19.79ms. Allocated memory is still 132.1MB. Free memory was 106.6MB in the beginning and 106.1MB in the end (delta: 543.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:57:28,379 INFO L158 Benchmark]: RCFGBuilder took 329.71ms. Allocated memory is still 132.1MB. Free memory was 106.1MB in the beginning and 96.7MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 11:57:28,379 INFO L158 Benchmark]: BuchiAutomizer took 3705.21ms. Allocated memory is still 132.1MB. Free memory was 96.7MB in the beginning and 67.9MB in the end (delta: 28.8MB). Peak memory consumption was 31.3MB. Max. memory is 16.1GB. [2022-11-16 11:57:28,380 INFO L158 Benchmark]: Witness Printer took 41.42ms. Allocated memory is still 132.1MB. Free memory was 67.9MB in the beginning and 65.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:57:28,382 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 132.1MB. Free memory is still 110.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 232.21ms. Allocated memory is still 132.1MB. Free memory was 93.3MB in the beginning and 108.1MB in the end (delta: -14.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.38ms. Allocated memory is still 132.1MB. Free memory was 108.1MB in the beginning and 106.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.79ms. Allocated memory is still 132.1MB. Free memory was 106.6MB in the beginning and 106.1MB in the end (delta: 543.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 329.71ms. Allocated memory is still 132.1MB. Free memory was 106.1MB in the beginning and 96.7MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 3705.21ms. Allocated memory is still 132.1MB. Free memory was 96.7MB in the beginning and 67.9MB in the end (delta: 28.8MB). Peak memory consumption was 31.3MB. Max. memory is 16.1GB. * Witness Printer took 41.42ms. Allocated memory is still 132.1MB. Free memory was 67.9MB in the beginning and 65.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (1 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function \old(x) and consists of 7 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 45 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.6s and 3 iterations. TraceHistogramMax:3. Analysis of lassos took 2.7s. Construction of modules took 0.1s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 28 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 64 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 36 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 89 IncrementalHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 28 mSDtfsCounter, 89 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI1 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital11 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq154 hnf94 smp100 dnf100 smp100 tf112 neg94 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 43ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 14]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L25] int x = __VERIFIER_nondet_int(); [L26] CALL g(x) VAL [\old(x)=2] [L19] COND FALSE !(x <= 0) VAL [\old(x)=2, x=2] [L20] CALL, EXPR f(x - 1) VAL [\old(x)=1] [L13] COND FALSE !(x <= 0) VAL [\old(x)=1, x=1] [L14] CALL g(x) VAL [\old(x)=1] [L19] COND FALSE !(x <= 0) VAL [\old(x)=1, x=1] [L20] CALL, EXPR f(x - 1) VAL [\old(x)=0] [L13] COND TRUE x <= 0 [L13] return 0; VAL [\old(x)=0, \result=0, x=0] [L20] RET, EXPR f(x - 1) VAL [\old(x)=1, f(x - 1)=0, x=1] [L20] CALL, EXPR f(x - 2) VAL [\old(x)=-1] [L13] COND TRUE x <= 0 [L13] return 0; VAL [\old(x)=-1, \result=0, x=-1] [L20] RET, EXPR f(x - 2) VAL [\old(x)=1, f(x - 1)=0, f(x - 2)=0, x=1] [L20] return f(x - 1) + f(x - 2); [L14] RET g(x) VAL [\old(x)=1, g(x)=0, x=1] Loop: [L14] CALL g(x + 1) [L19] COND FALSE !(x <= 0) [L20] CALL, EXPR f(x - 1) [L13] COND FALSE !(x <= 0) [L14] CALL g(x) [L19] COND FALSE !(x <= 0) [L20] CALL, EXPR f(x - 1) [L13] COND TRUE x <= 0 [L13] return 0; [L20] RET, EXPR f(x - 1) [L20] CALL, EXPR f(x - 2) [L13] COND TRUE x <= 0 [L13] return 0; [L20] RET, EXPR f(x - 2) [L20] return f(x - 1) + f(x - 2); [L14] RET g(x) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 14]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L25] int x = __VERIFIER_nondet_int(); [L26] CALL g(x) VAL [\old(x)=2] [L19] COND FALSE !(x <= 0) VAL [\old(x)=2, x=2] [L20] CALL, EXPR f(x - 1) VAL [\old(x)=1] [L13] COND FALSE !(x <= 0) VAL [\old(x)=1, x=1] [L14] CALL g(x) VAL [\old(x)=1] [L19] COND FALSE !(x <= 0) VAL [\old(x)=1, x=1] [L20] CALL, EXPR f(x - 1) VAL [\old(x)=0] [L13] COND TRUE x <= 0 [L13] return 0; VAL [\old(x)=0, \result=0, x=0] [L20] RET, EXPR f(x - 1) VAL [\old(x)=1, f(x - 1)=0, x=1] [L20] CALL, EXPR f(x - 2) VAL [\old(x)=-1] [L13] COND TRUE x <= 0 [L13] return 0; VAL [\old(x)=-1, \result=0, x=-1] [L20] RET, EXPR f(x - 2) VAL [\old(x)=1, f(x - 1)=0, f(x - 2)=0, x=1] [L20] return f(x - 1) + f(x - 2); [L14] RET g(x) VAL [\old(x)=1, g(x)=0, x=1] Loop: [L14] CALL g(x + 1) [L19] COND FALSE !(x <= 0) [L20] CALL, EXPR f(x - 1) [L13] COND FALSE !(x <= 0) [L14] CALL g(x) [L19] COND FALSE !(x <= 0) [L20] CALL, EXPR f(x - 1) [L13] COND TRUE x <= 0 [L13] return 0; [L20] RET, EXPR f(x - 1) [L20] CALL, EXPR f(x - 2) [L13] COND TRUE x <= 0 [L13] return 0; [L20] RET, EXPR f(x - 2) [L20] return f(x - 1) + f(x - 2); [L14] RET g(x) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-11-16 11:57:28,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ad3910-b170-4e80-b055-66c6a4b4114e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)