./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/Collatz_bounded.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/Collatz_bounded.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash fb8f212b8045dc9be8518316cbae752ce6111a4a93244dc89f86b0ea27a978ef --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:57:29,830 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:57:29,835 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:57:29,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:57:29,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:57:29,899 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:57:29,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:57:29,908 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:57:29,911 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:57:29,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:57:29,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:57:29,925 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:57:29,925 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:57:29,928 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:57:29,931 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:57:29,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:57:29,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:57:29,936 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:57:29,938 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:57:29,949 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:57:29,952 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:57:29,955 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:57:29,960 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:57:29,961 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:57:29,971 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:57:29,972 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:57:29,972 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:57:29,975 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:57:29,976 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:57:29,978 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:57:29,979 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:57:29,981 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:57:29,983 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:57:29,984 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:57:29,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:57:29,986 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:57:29,987 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:57:29,987 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:57:29,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:57:29,989 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:57:29,989 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:57:29,991 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-10-17 10:57:30,040 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:57:30,043 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:57:30,044 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:57:30,044 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:57:30,046 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:57:30,046 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:57:30,046 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:57:30,047 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-10-17 10:57:30,047 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-10-17 10:57:30,047 INFO L138 SettingsManager]: * Use old map elimination=false [2022-10-17 10:57:30,048 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-10-17 10:57:30,048 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-10-17 10:57:30,049 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-10-17 10:57:30,049 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:57:30,049 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 10:57:30,049 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:57:30,050 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:57:30,050 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-10-17 10:57:30,050 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-10-17 10:57:30,050 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-10-17 10:57:30,051 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:57:30,051 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-10-17 10:57:30,051 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:57:30,051 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-10-17 10:57:30,052 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:57:30,052 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:57:30,052 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:57:30,052 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:57:30,053 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-10-17 10:57:30,054 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_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fb8f212b8045dc9be8518316cbae752ce6111a4a93244dc89f86b0ea27a978ef [2022-10-17 10:57:30,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:57:30,432 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:57:30,435 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:57:30,437 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:57:30,438 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:57:30,440 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/termination-crafted/Collatz_bounded.c [2022-10-17 10:57:30,506 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/data/20c8b9973/18e2128aacd343b19321484424075f8b/FLAG813c37425 [2022-10-17 10:57:31,013 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:57:31,017 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/sv-benchmarks/c/termination-crafted/Collatz_bounded.c [2022-10-17 10:57:31,025 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/data/20c8b9973/18e2128aacd343b19321484424075f8b/FLAG813c37425 [2022-10-17 10:57:31,393 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/data/20c8b9973/18e2128aacd343b19321484424075f8b [2022-10-17 10:57:31,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:57:31,398 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:57:31,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:57:31,401 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:57:31,405 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:57:31,406 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:57:31" (1/1) ... [2022-10-17 10:57:31,408 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5954e439 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:31, skipping insertion in model container [2022-10-17 10:57:31,408 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:57:31" (1/1) ... [2022-10-17 10:57:31,418 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:57:31,432 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:57:31,664 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:57:31,669 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:57:31,685 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:57:31,699 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:57:31,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:31 WrapperNode [2022-10-17 10:57:31,700 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:57:31,701 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:57:31,702 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:57:31,702 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:57:31,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:31" (1/1) ... [2022-10-17 10:57:31,717 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:31" (1/1) ... [2022-10-17 10:57:31,737 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16 [2022-10-17 10:57:31,737 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:57:31,739 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:57:31,739 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:57:31,739 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:57:31,750 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:31" (1/1) ... [2022-10-17 10:57:31,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:31" (1/1) ... [2022-10-17 10:57:31,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:31" (1/1) ... [2022-10-17 10:57:31,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:31" (1/1) ... [2022-10-17 10:57:31,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:31" (1/1) ... [2022-10-17 10:57:31,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:31" (1/1) ... [2022-10-17 10:57:31,759 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:31" (1/1) ... [2022-10-17 10:57:31,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:31" (1/1) ... [2022-10-17 10:57:31,762 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:57:31,763 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:57:31,763 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:57:31,764 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:57:31,765 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:31" (1/1) ... [2022-10-17 10:57:31,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:57:31,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:31,803 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:57:31,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-10-17 10:57:31,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:57:31,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:57:31,930 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:57:31,933 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:57:32,069 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:57:32,077 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:57:32,077 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 10:57:32,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:57:32 BoogieIcfgContainer [2022-10-17 10:57:32,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:57:32,081 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-10-17 10:57:32,081 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-10-17 10:57:32,086 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-10-17 10:57:32,087 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-10-17 10:57:32,088 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 17.10 10:57:31" (1/3) ... [2022-10-17 10:57:32,089 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@113db0c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.10 10:57:32, skipping insertion in model container [2022-10-17 10:57:32,089 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-10-17 10:57:32,090 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:31" (2/3) ... [2022-10-17 10:57:32,090 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@113db0c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.10 10:57:32, skipping insertion in model container [2022-10-17 10:57:32,090 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-10-17 10:57:32,091 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:57:32" (3/3) ... [2022-10-17 10:57:32,092 INFO L332 chiAutomizerObserver]: Analyzing ICFG Collatz_bounded.c [2022-10-17 10:57:32,155 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-10-17 10:57:32,155 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-10-17 10:57:32,155 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-10-17 10:57:32,156 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-10-17 10:57:32,156 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-10-17 10:57:32,156 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-10-17 10:57:32,156 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-10-17 10:57:32,157 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-10-17 10:57:32,162 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:57:32,182 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-10-17 10:57:32,182 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:57:32,182 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:57:32,188 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-10-17 10:57:32,189 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-10-17 10:57:32,189 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-10-17 10:57:32,189 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:57:32,191 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-10-17 10:57:32,191 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:57:32,191 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:57:32,192 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-10-17 10:57:32,192 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-10-17 10:57:32,201 INFO L748 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~y~0#1;main_~y~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 8#L14true assume !(main_~y~0#1 >= 113383); 6#L16-2true [2022-10-17 10:57:32,201 INFO L750 eck$LassoCheckResult]: Loop: 6#L16-2true assume !!(main_~y~0#1 > 1); 2#L16true assume 0 == (if main_~y~0#1 < 0 && 0 != main_~y~0#1 % 2 then main_~y~0#1 % 2 - 2 else main_~y~0#1 % 2);main_~y~0#1 := (if main_~y~0#1 < 0 && 0 != main_~y~0#1 % 2 then 1 + main_~y~0#1 / 2 else main_~y~0#1 / 2); 6#L16-2true [2022-10-17 10:57:32,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:32,209 INFO L85 PathProgramCache]: Analyzing trace with hash 29860, now seen corresponding path program 1 times [2022-10-17 10:57:32,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:32,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463816399] [2022-10-17 10:57:32,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:32,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:32,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:57:32,313 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:57:32,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:57:32,337 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:57:32,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:32,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1476, now seen corresponding path program 1 times [2022-10-17 10:57:32,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:32,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710893134] [2022-10-17 10:57:32,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:32,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:32,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:57:32,369 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:57:32,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:57:32,384 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:57:32,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:32,386 INFO L85 PathProgramCache]: Analyzing trace with hash 28695975, now seen corresponding path program 1 times [2022-10-17 10:57:32,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:32,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184856931] [2022-10-17 10:57:32,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:32,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:32,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:57:32,404 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:57:32,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:57:32,416 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:57:32,584 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:57:32,585 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:57:32,585 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:57:32,586 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:57:32,586 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-10-17 10:57:32,586 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:57:32,587 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:57:32,587 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:57:32,587 INFO L133 ssoRankerPreferences]: Filename of dumped script: Collatz_bounded.c_Iteration1_Loop [2022-10-17 10:57:32,587 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:57:32,588 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:57:32,634 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:57:32,806 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:57:32,806 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-10-17 10:57:32,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:57:32,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:32,812 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:57:32,823 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:57:32,823 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:57:32,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-10-17 10:57:32,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:32,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:57:32,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:32,916 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:57:32,923 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-10-17 10:57:32,924 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:57:32,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-10-17 10:57:33,014 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-10-17 10:57:33,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:33,029 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:57:33,030 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:57:33,030 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:57:33,030 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:57:33,030 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-10-17 10:57:33,030 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:57:33,031 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:57:33,031 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:57:33,031 INFO L133 ssoRankerPreferences]: Filename of dumped script: Collatz_bounded.c_Iteration1_Loop [2022-10-17 10:57:33,031 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:57:33,032 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:57:33,033 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:57:33,181 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:57:33,187 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-10-17 10:57:33,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:57:33,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:33,198 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:57:33,202 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 [2022-10-17 10:57:33,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-10-17 10:57:33,214 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:57:33,214 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:57:33,215 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:57:33,215 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:57:33,215 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:57:33,220 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:57:33,220 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:57:33,237 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-10-17 10:57:33,245 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-10-17 10:57:33,246 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-10-17 10:57:33,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:57:33,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:33,250 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:57:33,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-10-17 10:57:33,254 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-10-17 10:57:33,255 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-10-17 10:57:33,255 INFO L513 LassoAnalysis]: Proved termination. [2022-10-17 10:57:33,256 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2022-10-17 10:57:33,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:33,302 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-10-17 10:57:33,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:33,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:33,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 10:57:33,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:33,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:33,368 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 10:57:33,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:33,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:57:33,430 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-10-17 10:57:33,433 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:57:33,484 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 28 states and 35 transitions. Complement of second has 8 states. [2022-10-17 10:57:33,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-10-17 10:57:33,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:57:33,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 16 transitions. [2022-10-17 10:57:33,495 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 3 letters. Loop has 2 letters. [2022-10-17 10:57:33,496 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:57:33,496 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 5 letters. Loop has 2 letters. [2022-10-17 10:57:33,497 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:57:33,497 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 3 letters. Loop has 4 letters. [2022-10-17 10:57:33,497 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:57:33,498 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2022-10-17 10:57:33,501 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-10-17 10:57:33,505 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 9 states and 12 transitions. [2022-10-17 10:57:33,507 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2022-10-17 10:57:33,507 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2022-10-17 10:57:33,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 12 transitions. [2022-10-17 10:57:33,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-10-17 10:57:33,508 INFO L218 hiAutomatonCegarLoop]: Abstraction has 9 states and 12 transitions. [2022-10-17 10:57:33,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 12 transitions. [2022-10-17 10:57:33,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-10-17 10:57:33,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:57:33,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 12 transitions. [2022-10-17 10:57:33,536 INFO L240 hiAutomatonCegarLoop]: Abstraction has 9 states and 12 transitions. [2022-10-17 10:57:33,536 INFO L428 stractBuchiCegarLoop]: Abstraction has 9 states and 12 transitions. [2022-10-17 10:57:33,536 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-10-17 10:57:33,537 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 12 transitions. [2022-10-17 10:57:33,537 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-10-17 10:57:33,537 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:57:33,538 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:57:33,538 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-10-17 10:57:33,538 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-10-17 10:57:33,538 INFO L748 eck$LassoCheckResult]: Stem: 83#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 84#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~y~0#1;main_~y~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 86#L14 assume !(main_~y~0#1 >= 113383); 87#L16-2 assume !!(main_~y~0#1 > 1); 79#L16 assume !(0 == (if main_~y~0#1 < 0 && 0 != main_~y~0#1 % 2 then main_~y~0#1 % 2 - 2 else main_~y~0#1 % 2));main_~y~0#1 := 1 + 3 * main_~y~0#1; 80#L16-2 [2022-10-17 10:57:33,539 INFO L750 eck$LassoCheckResult]: Loop: 80#L16-2 assume !!(main_~y~0#1 > 1); 85#L16 assume 0 == (if main_~y~0#1 < 0 && 0 != main_~y~0#1 % 2 then main_~y~0#1 % 2 - 2 else main_~y~0#1 % 2);main_~y~0#1 := (if main_~y~0#1 < 0 && 0 != main_~y~0#1 % 2 then 1 + main_~y~0#1 / 2 else main_~y~0#1 / 2); 80#L16-2 [2022-10-17 10:57:33,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:33,539 INFO L85 PathProgramCache]: Analyzing trace with hash 28695977, now seen corresponding path program 1 times [2022-10-17 10:57:33,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:33,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989732338] [2022-10-17 10:57:33,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:33,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:33,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:57:33,553 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:57:33,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:57:33,562 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:57:33,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:33,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1476, now seen corresponding path program 2 times [2022-10-17 10:57:33,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:33,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610120003] [2022-10-17 10:57:33,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:33,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:33,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:57:33,616 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:57:33,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:57:33,632 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:57:33,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:33,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1807030636, now seen corresponding path program 1 times [2022-10-17 10:57:33,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:33,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118038959] [2022-10-17 10:57:33,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:33,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:33,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:57:33,667 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:57:33,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:57:33,700 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:57:33,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:33,735 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:57:33,735 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:57:33,736 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:57:33,736 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:57:33,736 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-10-17 10:57:33,736 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:57:33,736 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:57:33,736 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:57:33,737 INFO L133 ssoRankerPreferences]: Filename of dumped script: Collatz_bounded.c_Iteration2_Loop [2022-10-17 10:57:33,737 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:57:33,737 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:57:33,738 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:57:33,808 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:57:33,809 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-10-17 10:57:33,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:57:33,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:33,826 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:57:33,846 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:57:33,846 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:57:33,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-10-17 10:57:33,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:33,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:57:33,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:33,897 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:57:33,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-10-17 10:57:33,899 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-10-17 10:57:33,899 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:57:33,957 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-10-17 10:57:33,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:33,963 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:57:33,963 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:57:33,963 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:57:33,963 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:57:33,963 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-10-17 10:57:33,963 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:57:33,963 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:57:33,964 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:57:33,964 INFO L133 ssoRankerPreferences]: Filename of dumped script: Collatz_bounded.c_Iteration2_Loop [2022-10-17 10:57:33,965 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:57:33,965 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:57:33,966 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:57:34,059 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:57:34,060 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-10-17 10:57:34,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:57:34,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:34,071 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:57:34,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-10-17 10:57:34,072 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 [2022-10-17 10:57:34,080 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:57:34,080 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:57:34,080 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:57:34,081 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:57:34,081 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:57:34,083 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:57:34,083 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:57:34,093 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-10-17 10:57:34,096 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-10-17 10:57:34,096 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-10-17 10:57:34,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:57:34,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:34,098 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:57:34,103 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-10-17 10:57:34,104 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-10-17 10:57:34,104 INFO L513 LassoAnalysis]: Proved termination. [2022-10-17 10:57:34,104 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2022-10-17 10:57:34,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-10-17 10:57:34,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:34,127 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-10-17 10:57:34,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:34,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:34,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 10:57:34,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:34,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:34,183 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 10:57:34,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:34,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:57:34,211 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-10-17 10:57:34,212 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 12 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:57:34,240 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 12 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 13 states and 18 transitions. Complement of second has 5 states. [2022-10-17 10:57:34,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-10-17 10:57:34,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:57:34,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2022-10-17 10:57:34,242 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 5 letters. Loop has 2 letters. [2022-10-17 10:57:34,243 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:57:34,243 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 7 letters. Loop has 2 letters. [2022-10-17 10:57:34,243 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:57:34,243 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 5 letters. Loop has 4 letters. [2022-10-17 10:57:34,244 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:57:34,244 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 18 transitions. [2022-10-17 10:57:34,245 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-10-17 10:57:34,246 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 18 transitions. [2022-10-17 10:57:34,246 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-10-17 10:57:34,246 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2022-10-17 10:57:34,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 18 transitions. [2022-10-17 10:57:34,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-10-17 10:57:34,247 INFO L218 hiAutomatonCegarLoop]: Abstraction has 13 states and 18 transitions. [2022-10-17 10:57:34,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 18 transitions. [2022-10-17 10:57:34,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-10-17 10:57:34,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:57:34,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 18 transitions. [2022-10-17 10:57:34,271 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 18 transitions. [2022-10-17 10:57:34,271 INFO L428 stractBuchiCegarLoop]: Abstraction has 13 states and 18 transitions. [2022-10-17 10:57:34,271 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-10-17 10:57:34,272 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 18 transitions. [2022-10-17 10:57:34,272 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-10-17 10:57:34,273 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:57:34,273 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:57:34,273 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1] [2022-10-17 10:57:34,273 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-10-17 10:57:34,274 INFO L748 eck$LassoCheckResult]: Stem: 146#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 147#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~y~0#1;main_~y~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 150#L14 assume !(main_~y~0#1 >= 113383); 151#L16-2 assume !!(main_~y~0#1 > 1); 142#L16 assume !(0 == (if main_~y~0#1 < 0 && 0 != main_~y~0#1 % 2 then main_~y~0#1 % 2 - 2 else main_~y~0#1 % 2));main_~y~0#1 := 1 + 3 * main_~y~0#1; 143#L16-2 assume !!(main_~y~0#1 > 1); 152#L16 assume !(0 == (if main_~y~0#1 < 0 && 0 != main_~y~0#1 % 2 then main_~y~0#1 % 2 - 2 else main_~y~0#1 % 2));main_~y~0#1 := 1 + 3 * main_~y~0#1; 148#L16-2 [2022-10-17 10:57:34,274 INFO L750 eck$LassoCheckResult]: Loop: 148#L16-2 assume !!(main_~y~0#1 > 1); 149#L16 assume 0 == (if main_~y~0#1 < 0 && 0 != main_~y~0#1 % 2 then main_~y~0#1 % 2 - 2 else main_~y~0#1 % 2);main_~y~0#1 := (if main_~y~0#1 < 0 && 0 != main_~y~0#1 % 2 then 1 + main_~y~0#1 / 2 else main_~y~0#1 / 2); 148#L16-2 [2022-10-17 10:57:34,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:34,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1807030638, now seen corresponding path program 2 times [2022-10-17 10:57:34,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:34,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621104160] [2022-10-17 10:57:34,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:34,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:34,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:34,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:57:34,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:57:34,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621104160] [2022-10-17 10:57:34,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621104160] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:57:34,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:57:34,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:57:34,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139109583] [2022-10-17 10:57:34,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:57:34,686 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-10-17 10:57:34,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:34,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1476, now seen corresponding path program 3 times [2022-10-17 10:57:34,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:34,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89447236] [2022-10-17 10:57:34,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:34,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:34,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:57:34,695 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:57:34,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:57:34,716 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:57:34,752 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:57:34,752 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:57:34,752 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:57:34,753 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:57:34,753 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-10-17 10:57:34,753 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:57:34,753 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:57:34,756 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:57:34,756 INFO L133 ssoRankerPreferences]: Filename of dumped script: Collatz_bounded.c_Iteration3_Loop [2022-10-17 10:57:34,756 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:57:34,757 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:57:34,758 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:57:34,852 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:57:34,852 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-10-17 10:57:34,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:57:34,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:34,854 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:57:34,861 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:57:34,861 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:57:34,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-10-17 10:57:34,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:34,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:57:34,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:34,939 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:57:34,946 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-10-17 10:57:34,946 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:57:34,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-10-17 10:57:35,049 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-10-17 10:57:35,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:35,057 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:57:35,058 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:57:35,058 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:57:35,058 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:57:35,058 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-10-17 10:57:35,058 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:57:35,058 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:57:35,058 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:57:35,058 INFO L133 ssoRankerPreferences]: Filename of dumped script: Collatz_bounded.c_Iteration3_Loop [2022-10-17 10:57:35,058 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:57:35,059 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:57:35,060 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:57:35,159 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:57:35,159 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-10-17 10:57:35,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:57:35,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:35,162 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:57:35,182 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 [2022-10-17 10:57:35,193 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:57:35,193 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:57:35,193 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:57:35,193 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:57:35,193 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:57:35,196 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:57:35,196 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:57:35,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-10-17 10:57:35,221 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-10-17 10:57:35,226 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-10-17 10:57:35,226 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-10-17 10:57:35,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:57:35,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:35,229 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:57:35,235 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-10-17 10:57:35,235 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-10-17 10:57:35,236 INFO L513 LassoAnalysis]: Proved termination. [2022-10-17 10:57:35,236 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2022-10-17 10:57:35,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-10-17 10:57:35,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:35,284 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-10-17 10:57:35,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:35,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 10:57:35,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:35,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:35,341 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 10:57:35,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:35,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:57:35,403 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-10-17 10:57:35,404 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 18 transitions. cyclomatic complexity: 8 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:57:35,432 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 18 transitions. cyclomatic complexity: 8. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 15 states and 22 transitions. Complement of second has 5 states. [2022-10-17 10:57:35,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-10-17 10:57:35,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:57:35,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2022-10-17 10:57:35,435 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 7 letters. Loop has 2 letters. [2022-10-17 10:57:35,436 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:57:35,436 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-10-17 10:57:35,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:35,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:35,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:35,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:35,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 10:57:35,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:35,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:35,516 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 10:57:35,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:35,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:57:35,534 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2022-10-17 10:57:35,536 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 18 transitions. cyclomatic complexity: 8 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:57:35,553 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 18 transitions. cyclomatic complexity: 8. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 15 states and 22 transitions. Complement of second has 5 states. [2022-10-17 10:57:35,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-10-17 10:57:35,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:57:35,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2022-10-17 10:57:35,558 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 7 letters. Loop has 2 letters. [2022-10-17 10:57:35,558 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:57:35,558 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-10-17 10:57:35,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:35,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:35,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 10:57:35,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:35,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:35,613 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 10:57:35,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:35,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:57:35,630 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-10-17 10:57:35,630 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 18 transitions. cyclomatic complexity: 8 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:57:35,647 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 18 transitions. cyclomatic complexity: 8. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 17 states and 25 transitions. Complement of second has 4 states. [2022-10-17 10:57:35,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-10-17 10:57:35,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:57:35,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2022-10-17 10:57:35,653 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2022-10-17 10:57:35,653 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:57:35,653 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 2 letters. [2022-10-17 10:57:35,654 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:57:35,654 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 4 letters. [2022-10-17 10:57:35,655 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:57:35,655 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 25 transitions. [2022-10-17 10:57:35,659 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-10-17 10:57:35,661 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 15 states and 21 transitions. [2022-10-17 10:57:35,661 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2022-10-17 10:57:35,662 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2022-10-17 10:57:35,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 21 transitions. [2022-10-17 10:57:35,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-10-17 10:57:35,663 INFO L218 hiAutomatonCegarLoop]: Abstraction has 15 states and 21 transitions. [2022-10-17 10:57:35,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 21 transitions. [2022-10-17 10:57:35,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 7. [2022-10-17 10:57:35,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:57:35,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2022-10-17 10:57:35,666 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 9 transitions. [2022-10-17 10:57:35,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:57:35,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:57:35,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:57:35,673 INFO L87 Difference]: Start difference. First operand 7 states and 9 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:57:35,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:57:35,709 INFO L93 Difference]: Finished difference Result 10 states and 12 transitions. [2022-10-17 10:57:35,709 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2022-10-17 10:57:35,711 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-10-17 10:57:35,712 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 9 states and 11 transitions. [2022-10-17 10:57:35,713 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2022-10-17 10:57:35,713 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2022-10-17 10:57:35,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 11 transitions. [2022-10-17 10:57:35,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-10-17 10:57:35,713 INFO L218 hiAutomatonCegarLoop]: Abstraction has 9 states and 11 transitions. [2022-10-17 10:57:35,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 11 transitions. [2022-10-17 10:57:35,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2022-10-17 10:57:35,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.25) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:57:35,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2022-10-17 10:57:35,716 INFO L240 hiAutomatonCegarLoop]: Abstraction has 8 states and 10 transitions. [2022-10-17 10:57:35,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:57:35,719 INFO L428 stractBuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2022-10-17 10:57:35,719 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-10-17 10:57:35,719 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 10 transitions. [2022-10-17 10:57:35,720 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-10-17 10:57:35,720 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:57:35,720 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:57:35,721 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-10-17 10:57:35,721 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1] [2022-10-17 10:57:35,722 INFO L748 eck$LassoCheckResult]: Stem: 333#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 334#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~y~0#1;main_~y~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 335#L14 assume !(main_~y~0#1 >= 113383); 336#L16-2 assume !!(main_~y~0#1 > 1); 329#L16 [2022-10-17 10:57:35,722 INFO L750 eck$LassoCheckResult]: Loop: 329#L16 assume !(0 == (if main_~y~0#1 < 0 && 0 != main_~y~0#1 % 2 then main_~y~0#1 % 2 - 2 else main_~y~0#1 % 2));main_~y~0#1 := 1 + 3 * main_~y~0#1; 330#L16-2 assume !!(main_~y~0#1 > 1); 331#L16 assume 0 == (if main_~y~0#1 < 0 && 0 != main_~y~0#1 % 2 then main_~y~0#1 % 2 - 2 else main_~y~0#1 % 2);main_~y~0#1 := (if main_~y~0#1 < 0 && 0 != main_~y~0#1 % 2 then 1 + main_~y~0#1 / 2 else main_~y~0#1 / 2); 332#L16-2 assume !!(main_~y~0#1 > 1); 329#L16 [2022-10-17 10:57:35,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:35,722 INFO L85 PathProgramCache]: Analyzing trace with hash 925676, now seen corresponding path program 1 times [2022-10-17 10:57:35,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:35,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141610258] [2022-10-17 10:57:35,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:35,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:35,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:57:35,736 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:57:35,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:57:35,740 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:57:35,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:35,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1565113, now seen corresponding path program 1 times [2022-10-17 10:57:35,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:35,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473022312] [2022-10-17 10:57:35,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:35,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:35,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:57:35,779 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:57:35,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:57:35,792 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:57:35,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:35,793 INFO L85 PathProgramCache]: Analyzing trace with hash 183374884, now seen corresponding path program 2 times [2022-10-17 10:57:35,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:35,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825916429] [2022-10-17 10:57:35,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:35,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:35,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:57:35,811 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:57:35,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:57:35,834 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:57:35,956 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:57:35,956 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:57:35,956 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:57:35,956 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:57:35,956 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-10-17 10:57:35,956 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:57:35,956 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:57:35,956 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:57:35,957 INFO L133 ssoRankerPreferences]: Filename of dumped script: Collatz_bounded.c_Iteration4_Loop [2022-10-17 10:57:35,957 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:57:35,957 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:57:35,958 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:57:36,135 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:57:36,135 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-10-17 10:57:36,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:57:36,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:36,137 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:57:36,146 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:57:36,146 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:57:36,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-10-17 10:57:36,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:36,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:57:36,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:36,234 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:57:36,247 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-10-17 10:57:36,247 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:57:36,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-10-17 10:57:36,449 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-10-17 10:57:36,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2022-10-17 10:57:36,452 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:57:36,452 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:57:36,452 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:57:36,452 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:57:36,452 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-10-17 10:57:36,452 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:57:36,453 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:57:36,453 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:57:36,453 INFO L133 ssoRankerPreferences]: Filename of dumped script: Collatz_bounded.c_Iteration4_Loop [2022-10-17 10:57:36,453 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:57:36,453 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:57:36,454 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:57:36,586 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:57:36,586 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-10-17 10:57:36,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:57:36,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:36,589 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:57:36,598 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 [2022-10-17 10:57:36,609 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:57:36,609 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:57:36,609 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:57:36,609 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:57:36,609 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:57:36,613 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:57:36,613 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:57:36,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-10-17 10:57:36,625 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:57:36,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:36,673 INFO L490 LassoAnalysis]: Using template '2-nested'. [2022-10-17 10:57:36,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:57:36,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:36,677 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:57:36,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-10-17 10:57:36,685 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 [2022-10-17 10:57:36,696 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:57:36,696 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:57:36,697 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:57:36,697 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:57:36,697 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-10-17 10:57:36,701 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2022-10-17 10:57:36,701 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:57:36,717 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:57:36,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:36,761 INFO L490 LassoAnalysis]: Using template '3-nested'. [2022-10-17 10:57:36,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:57:36,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:36,762 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:57:36,769 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 [2022-10-17 10:57:36,781 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:57:36,781 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:57:36,782 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:57:36,782 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:57:36,782 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2022-10-17 10:57:36,792 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-10-17 10:57:36,793 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:57:36,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-10-17 10:57:36,805 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:57:36,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:36,848 INFO L490 LassoAnalysis]: Using template '4-nested'. [2022-10-17 10:57:36,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:57:36,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:36,850 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:57:36,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-10-17 10:57:36,856 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 [2022-10-17 10:57:36,866 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:57:36,866 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:57:36,866 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:57:36,866 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:57:36,867 INFO L205 nArgumentSynthesizer]: 5 template conjuncts. [2022-10-17 10:57:36,871 INFO L401 nArgumentSynthesizer]: We have 5 Motzkin's Theorem applications. [2022-10-17 10:57:36,871 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:57:36,889 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:57:36,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:36,922 INFO L490 LassoAnalysis]: Using template '2-phase'. [2022-10-17 10:57:36,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:57:36,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:36,923 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:57:36,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-10-17 10:57:36,929 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 [2022-10-17 10:57:36,936 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2022-10-17 10:57:36,936 INFO L338 nArgumentSynthesizer]: Template has degree 1. [2022-10-17 10:57:36,936 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:57:36,936 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:57:36,937 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:57:36,937 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-10-17 10:57:36,940 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2022-10-17 10:57:36,941 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:57:36,966 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:57:36,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:36,989 INFO L490 LassoAnalysis]: Using template '3-phase'. [2022-10-17 10:57:36,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:57:36,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:36,990 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:57:36,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-10-17 10:57:36,992 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 [2022-10-17 10:57:36,999 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2022-10-17 10:57:36,999 INFO L338 nArgumentSynthesizer]: Template has degree 2. [2022-10-17 10:57:37,000 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:57:37,000 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:57:37,000 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:57:37,000 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2022-10-17 10:57:37,005 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-10-17 10:57:37,005 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:57:37,037 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:57:37,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:37,074 INFO L490 LassoAnalysis]: Using template '4-phase'. [2022-10-17 10:57:37,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:57:37,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:37,077 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:57:37,079 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 [2022-10-17 10:57:37,090 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2022-10-17 10:57:37,090 INFO L338 nArgumentSynthesizer]: Template has degree 3. [2022-10-17 10:57:37,090 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:57:37,090 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:57:37,090 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:57:37,090 INFO L205 nArgumentSynthesizer]: 5 template conjuncts. [2022-10-17 10:57:37,098 INFO L401 nArgumentSynthesizer]: We have 5 Motzkin's Theorem applications. [2022-10-17 10:57:37,098 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:57:37,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-10-17 10:57:37,133 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:57:37,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:37,171 INFO L490 LassoAnalysis]: Using template '2-lex'. [2022-10-17 10:57:37,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:57:37,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:37,173 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:57:37,177 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 [2022-10-17 10:57:37,187 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2022-10-17 10:57:37,187 INFO L338 nArgumentSynthesizer]: Template has degree 1. [2022-10-17 10:57:37,188 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:57:37,188 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:57:37,188 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:57:37,188 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2022-10-17 10:57:37,192 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-10-17 10:57:37,192 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:57:37,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-10-17 10:57:37,217 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:57:37,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:37,250 INFO L490 LassoAnalysis]: Using template '3-lex'. [2022-10-17 10:57:37,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:57:37,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:37,251 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:57:37,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-10-17 10:57:37,254 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 [2022-10-17 10:57:37,262 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2022-10-17 10:57:37,262 INFO L338 nArgumentSynthesizer]: Template has degree 3. [2022-10-17 10:57:37,262 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:57:37,263 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:57:37,263 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:57:37,263 INFO L205 nArgumentSynthesizer]: 6 template conjuncts. [2022-10-17 10:57:37,274 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-10-17 10:57:37,274 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:57:37,297 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:57:37,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:37,347 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:57:37,347 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:57:37,347 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:57:37,347 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:57:37,348 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-10-17 10:57:37,348 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:57:37,348 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:57:37,348 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:57:37,348 INFO L133 ssoRankerPreferences]: Filename of dumped script: Collatz_bounded.c_Iteration4_Lasso [2022-10-17 10:57:37,348 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:57:37,348 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:57:37,350 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:57:37,353 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:57:37,367 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:57:37,517 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:57:37,517 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-10-17 10:57:37,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:57:37,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:37,521 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:57:37,524 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:57:37,524 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:57:37,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-10-17 10:57:37,546 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:57:37,546 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0#1=0} Honda state: {ULTIMATE.start_main_#t~nondet0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:57:37,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:37,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:57:37,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:37,588 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:57:37,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-10-17 10:57:37,596 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:57:37,597 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:57:37,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:37,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:57:37,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:37,709 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:57:37,711 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-10-17 10:57:37,712 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:57:37,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4492d8-c21f-4900-a7ac-f060e6b8c003/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process