./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-bwb/not-01.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-bwb/not-01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a --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 3dfbe8f5341b447680f0727714aef9849c6c8cbf32af0f88458cc80db5d02e27 --- 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-b5237d8 [2022-11-21 09:02:12,801 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 09:02:12,804 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 09:02:12,836 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 09:02:12,837 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 09:02:12,842 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 09:02:12,843 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 09:02:12,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 09:02:12,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 09:02:12,847 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 09:02:12,848 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 09:02:12,849 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 09:02:12,849 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 09:02:12,851 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 09:02:12,852 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 09:02:12,853 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 09:02:12,854 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 09:02:12,855 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 09:02:12,857 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 09:02:12,859 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 09:02:12,861 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 09:02:12,862 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 09:02:12,864 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 09:02:12,865 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 09:02:12,869 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 09:02:12,869 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 09:02:12,869 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 09:02:12,871 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 09:02:12,871 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 09:02:12,872 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 09:02:12,873 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 09:02:12,874 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 09:02:12,875 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 09:02:12,875 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 09:02:12,877 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 09:02:12,877 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 09:02:12,878 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 09:02:12,878 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 09:02:12,879 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 09:02:12,880 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 09:02:12,881 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 09:02:12,882 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-11-21 09:02:12,905 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 09:02:12,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 09:02:12,906 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 09:02:12,907 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 09:02:12,908 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 09:02:12,908 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 09:02:12,909 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 09:02:12,909 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-21 09:02:12,909 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-21 09:02:12,909 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-21 09:02:12,910 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-21 09:02:12,910 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-21 09:02:12,910 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-21 09:02:12,911 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 09:02:12,911 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 09:02:12,911 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 09:02:12,911 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 09:02:12,912 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-21 09:02:12,912 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-21 09:02:12,912 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-21 09:02:12,913 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 09:02:12,913 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-21 09:02:12,913 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 09:02:12,913 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-21 09:02:12,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 09:02:12,914 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 09:02:12,914 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 09:02:12,915 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 09:02:12,916 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-21 09:02:12,916 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_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3dfbe8f5341b447680f0727714aef9849c6c8cbf32af0f88458cc80db5d02e27 [2022-11-21 09:02:13,216 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 09:02:13,259 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 09:02:13,266 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 09:02:13,268 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 09:02:13,269 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 09:02:13,270 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/termination-bwb/not-01.c [2022-11-21 09:02:16,549 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 09:02:16,771 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 09:02:16,772 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/sv-benchmarks/c/termination-bwb/not-01.c [2022-11-21 09:02:16,778 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/data/51f0a0fbb/e390e662cdfc4c9e8b6cd5462122c774/FLAG91a91e744 [2022-11-21 09:02:16,795 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/data/51f0a0fbb/e390e662cdfc4c9e8b6cd5462122c774 [2022-11-21 09:02:16,799 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 09:02:16,801 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 09:02:16,802 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 09:02:16,803 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 09:02:16,807 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 09:02:16,808 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:02:16" (1/1) ... [2022-11-21 09:02:16,809 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38de55a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:16, skipping insertion in model container [2022-11-21 09:02:16,810 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:02:16" (1/1) ... [2022-11-21 09:02:16,819 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 09:02:16,832 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 09:02:16,993 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:02:16,997 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 09:02:17,008 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:02:17,018 INFO L208 MainTranslator]: Completed translation [2022-11-21 09:02:17,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:17 WrapperNode [2022-11-21 09:02:17,019 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 09:02:17,020 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 09:02:17,020 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 09:02:17,020 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 09:02:17,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:17" (1/1) ... [2022-11-21 09:02:17,035 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:17" (1/1) ... [2022-11-21 09:02:17,052 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-11-21 09:02:17,053 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 09:02:17,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 09:02:17,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 09:02:17,054 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 09:02:17,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:17" (1/1) ... [2022-11-21 09:02:17,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:17" (1/1) ... [2022-11-21 09:02:17,064 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:17" (1/1) ... [2022-11-21 09:02:17,065 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:17" (1/1) ... [2022-11-21 09:02:17,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:17" (1/1) ... [2022-11-21 09:02:17,072 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:17" (1/1) ... [2022-11-21 09:02:17,073 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:17" (1/1) ... [2022-11-21 09:02:17,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:17" (1/1) ... [2022-11-21 09:02:17,075 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 09:02:17,076 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 09:02:17,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 09:02:17,076 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 09:02:17,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:17" (1/1) ... [2022-11-21 09:02:17,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:02:17,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:02:17,117 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:02:17,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-21 09:02:17,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 09:02:17,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 09:02:17,248 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 09:02:17,251 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 09:02:17,370 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 09:02:17,378 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 09:02:17,378 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 09:02:17,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:02:17 BoogieIcfgContainer [2022-11-21 09:02:17,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 09:02:17,382 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-21 09:02:17,382 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-21 09:02:17,386 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-21 09:02:17,387 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-21 09:02:17,388 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.11 09:02:16" (1/3) ... [2022-11-21 09:02:17,389 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@101bdb2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.11 09:02:17, skipping insertion in model container [2022-11-21 09:02:17,389 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-21 09:02:17,389 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:17" (2/3) ... [2022-11-21 09:02:17,390 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@101bdb2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.11 09:02:17, skipping insertion in model container [2022-11-21 09:02:17,390 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-21 09:02:17,390 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:02:17" (3/3) ... [2022-11-21 09:02:17,392 INFO L332 chiAutomizerObserver]: Analyzing ICFG not-01.c [2022-11-21 09:02:17,460 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-21 09:02:17,461 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-21 09:02:17,461 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-21 09:02:17,461 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-21 09:02:17,461 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-21 09:02:17,461 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-21 09:02:17,462 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-21 09:02:17,462 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-21 09:02:17,467 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.5) 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) [2022-11-21 09:02:17,485 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-21 09:02:17,486 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 09:02:17,486 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 09:02:17,492 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-21 09:02:17,492 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-21 09:02:17,493 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-21 09:02:17,493 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.5) 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) [2022-11-21 09:02:17,494 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-21 09:02:17,494 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 09:02:17,495 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 09:02:17,495 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-21 09:02:17,495 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-21 09:02:17,503 INFO L748 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~a~0#1, main_~x~0#1;havoc main_~a~0#1;havoc main_~x~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~a~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 5#L18-2true [2022-11-21 09:02:17,504 INFO L750 eck$LassoCheckResult]: Loop: 5#L18-2true assume !!(main_~x~0#1 > 0);main_#t~nondet2#1 := ~bitwiseComplement(main_~a~0#1);assume main_#t~nondet2#1 != main_~a~0#1;assume main_~a~0#1 >= 0 || main_#t~nondet2#1 > 0;main_~a~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 3#L18true assume !(main_~a~0#1 > 0);main_~x~0#1 := main_~x~0#1 + main_~a~0#1; 5#L18-2true [2022-11-21 09:02:17,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:02:17,509 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-11-21 09:02:17,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:02:17,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526242590] [2022-11-21 09:02:17,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:02:17,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:02:17,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:02:17,617 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 09:02:17,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:02:17,659 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 09:02:17,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:02:17,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 1 times [2022-11-21 09:02:17,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:02:17,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211766752] [2022-11-21 09:02:17,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:02:17,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:02:17,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:02:17,704 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 09:02:17,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:02:17,716 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 09:02:17,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:02:17,719 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2022-11-21 09:02:17,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:02:17,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021295955] [2022-11-21 09:02:17,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:02:17,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:02:17,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:02:17,733 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 09:02:17,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:02:17,745 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 09:02:17,891 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 09:02:17,892 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 09:02:17,892 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 09:02:17,892 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 09:02:17,892 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-21 09:02:17,893 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:02:17,893 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 09:02:17,893 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 09:02:17,893 INFO L133 ssoRankerPreferences]: Filename of dumped script: not-01.c_Iteration1_Loop [2022-11-21 09:02:17,893 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 09:02:17,894 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 09:02:17,914 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 09:02:17,926 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 09:02:18,014 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 09:02:18,014 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-21 09:02:18,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:02:18,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:02:18,021 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:02:18,055 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 09:02:18,055 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 09:02:18,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-21 09:02:18,083 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-21 09:02:18,083 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2#1=0} Honda state: {ULTIMATE.start_main_#t~nondet2#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-21 09:02:18,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-11-21 09:02:18,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:02:18,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:02:18,096 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:02:18,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-21 09:02:18,099 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 09:02:18,100 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 09:02:18,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2022-11-21 09:02:18,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:02:18,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:02:18,134 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:02:18,144 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-21 09:02:18,144 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 09:02:18,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-21 09:02:18,199 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-21 09:02:18,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-21 09:02:18,209 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 09:02:18,210 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 09:02:18,210 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 09:02:18,210 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 09:02:18,210 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-21 09:02:18,210 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:02:18,210 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 09:02:18,211 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 09:02:18,211 INFO L133 ssoRankerPreferences]: Filename of dumped script: not-01.c_Iteration1_Loop [2022-11-21 09:02:18,211 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 09:02:18,211 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 09:02:18,213 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 09:02:18,217 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 09:02:18,319 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 09:02:18,324 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-21 09:02:18,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:02:18,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:02:18,363 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:02:18,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-21 09:02:18,368 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-21 09:02:18,379 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 09:02:18,379 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 09:02:18,380 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 09:02:18,380 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 09:02:18,380 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 09:02:18,382 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-21 09:02:18,382 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 09:02:18,392 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-21 09:02:18,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-21 09:02:18,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:02:18,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:02:18,405 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:02:18,408 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-21 09:02:18,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-21 09:02:18,418 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 09:02:18,419 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 09:02:18,419 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 09:02:18,419 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 09:02:18,419 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 09:02:18,421 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-21 09:02:18,421 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 09:02:18,433 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-21 09:02:18,438 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-21 09:02:18,438 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-21 09:02:18,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:02:18,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:02:18,447 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:02:18,448 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-21 09:02:18,449 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-21 09:02:18,449 INFO L513 LassoAnalysis]: Proved termination. [2022-11-21 09:02:18,449 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~a~0#1) = 2*ULTIMATE.start_main_~a~0#1 + 1 Supporting invariants [] [2022-11-21 09:02:18,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-21 09:02:18,455 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2022-11-21 09:02:18,458 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-21 09:02:18,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:02:18,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:02:18,503 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 09:02:18,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:02:18,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:02:18,526 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 09:02:18,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:02:18,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:02:18,703 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 [2022-11-21 09:02:18,705 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 7 states, 6 states have (on average 1.5) 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) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:02:18,793 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 7 states, 6 states have (on average 1.5) 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). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 36 transitions. Complement of second has 8 states. [2022-11-21 09:02:18,797 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 [2022-11-21 09:02:18,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:02:18,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2022-11-21 09:02:18,806 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 2 letters. Loop has 2 letters. [2022-11-21 09:02:18,807 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 09:02:18,807 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 4 letters. Loop has 2 letters. [2022-11-21 09:02:18,807 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 09:02:18,807 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 2 letters. Loop has 4 letters. [2022-11-21 09:02:18,808 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 09:02:18,809 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 36 transitions. [2022-11-21 09:02:18,815 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-21 09:02:18,820 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 9 states and 12 transitions. [2022-11-21 09:02:18,821 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2022-11-21 09:02:18,822 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2022-11-21 09:02:18,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 12 transitions. [2022-11-21 09:02:18,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 09:02:18,824 INFO L218 hiAutomatonCegarLoop]: Abstraction has 9 states and 12 transitions. [2022-11-21 09:02:18,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 12 transitions. [2022-11-21 09:02:18,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2022-11-21 09:02:18,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:02:18,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2022-11-21 09:02:18,855 INFO L240 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-11-21 09:02:18,855 INFO L428 stractBuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-11-21 09:02:18,855 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-21 09:02:18,855 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2022-11-21 09:02:18,857 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-21 09:02:18,857 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 09:02:18,857 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 09:02:18,859 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-11-21 09:02:18,859 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-21 09:02:18,859 INFO L748 eck$LassoCheckResult]: Stem: 78#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 79#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~a~0#1, main_~x~0#1;havoc main_~a~0#1;havoc main_~x~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~a~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 81#L18-2 assume !!(main_~x~0#1 > 0);main_#t~nondet2#1 := ~bitwiseComplement(main_~a~0#1);assume main_#t~nondet2#1 != main_~a~0#1;assume main_~a~0#1 >= 0 || main_#t~nondet2#1 > 0;main_~a~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 74#L18 assume main_~a~0#1 > 0;main_~x~0#1 := main_~x~0#1 - main_~a~0#1; 75#L18-2 [2022-11-21 09:02:18,859 INFO L750 eck$LassoCheckResult]: Loop: 75#L18-2 assume !!(main_~x~0#1 > 0);main_#t~nondet2#1 := ~bitwiseComplement(main_~a~0#1);assume main_#t~nondet2#1 != main_~a~0#1;assume main_~a~0#1 >= 0 || main_#t~nondet2#1 > 0;main_~a~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 80#L18 assume !(main_~a~0#1 > 0);main_~x~0#1 := main_~x~0#1 + main_~a~0#1; 75#L18-2 [2022-11-21 09:02:18,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:02:18,862 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2022-11-21 09:02:18,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:02:18,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865031504] [2022-11-21 09:02:18,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:02:18,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:02:18,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:02:18,875 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 09:02:18,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:02:18,885 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 09:02:18,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:02:18,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 2 times [2022-11-21 09:02:18,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:02:18,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575388531] [2022-11-21 09:02:18,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:02:18,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:02:18,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:02:18,906 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 09:02:18,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:02:18,917 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 09:02:18,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:02:18,918 INFO L85 PathProgramCache]: Analyzing trace with hash 889692235, now seen corresponding path program 1 times [2022-11-21 09:02:18,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:02:18,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484905981] [2022-11-21 09:02:18,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:02:18,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:02:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:02:18,932 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 09:02:18,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:02:18,949 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 09:02:19,013 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 09:02:19,013 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 09:02:19,013 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 09:02:19,013 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 09:02:19,014 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-21 09:02:19,014 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:02:19,014 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 09:02:19,014 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 09:02:19,014 INFO L133 ssoRankerPreferences]: Filename of dumped script: not-01.c_Iteration2_Loop [2022-11-21 09:02:19,014 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 09:02:19,015 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 09:02:19,016 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 09:02:19,029 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 09:02:19,081 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 09:02:19,081 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-21 09:02:19,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:02:19,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:02:19,083 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:02:19,091 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 09:02:19,092 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 09:02:19,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-21 09:02:19,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-11-21 09:02:19,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:02:19,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:02:19,132 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:02:19,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-21 09:02:19,136 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-21 09:02:19,136 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 09:02:19,164 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-21 09:02:19,172 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2022-11-21 09:02:19,172 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 09:02:19,172 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 09:02:19,172 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 09:02:19,172 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 09:02:19,172 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-21 09:02:19,172 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:02:19,173 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 09:02:19,173 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 09:02:19,173 INFO L133 ssoRankerPreferences]: Filename of dumped script: not-01.c_Iteration2_Loop [2022-11-21 09:02:19,173 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 09:02:19,173 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 09:02:19,174 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 09:02:19,192 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 09:02:19,242 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 09:02:19,242 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-21 09:02:19,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:02:19,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:02:19,244 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:02:19,252 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-21 09:02:19,264 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 09:02:19,264 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 09:02:19,265 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 09:02:19,265 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 09:02:19,265 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 09:02:19,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-21 09:02:19,268 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-21 09:02:19,268 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 09:02:19,278 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-21 09:02:19,281 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-21 09:02:19,282 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-21 09:02:19,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:02:19,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:02:19,290 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:02:19,300 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-21 09:02:19,301 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-21 09:02:19,301 INFO L513 LassoAnalysis]: Proved termination. [2022-11-21 09:02:19,301 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~a~0#1) = 2*ULTIMATE.start_main_~a~0#1 + 1 Supporting invariants [] [2022-11-21 09:02:19,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-21 09:02:19,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-11-21 09:02:19,312 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-21 09:02:19,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:02:19,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:02:19,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 09:02:19,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:02:19,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:02:19,347 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 09:02:19,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:02:19,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:02:19,401 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 [2022-11-21 09:02:19,402 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:02:19,419 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 14 states and 19 transitions. Complement of second has 5 states. [2022-11-21 09:02:19,420 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 [2022-11-21 09:02:19,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:02:19,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2022-11-21 09:02:19,421 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2022-11-21 09:02:19,421 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 09:02:19,422 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2022-11-21 09:02:19,422 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 09:02:19,422 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 4 letters. [2022-11-21 09:02:19,422 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 09:02:19,422 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 19 transitions. [2022-11-21 09:02:19,423 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-21 09:02:19,424 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 13 states and 18 transitions. [2022-11-21 09:02:19,424 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-11-21 09:02:19,424 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2022-11-21 09:02:19,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 18 transitions. [2022-11-21 09:02:19,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 09:02:19,425 INFO L218 hiAutomatonCegarLoop]: Abstraction has 13 states and 18 transitions. [2022-11-21 09:02:19,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 18 transitions. [2022-11-21 09:02:19,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2022-11-21 09:02:19,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:02:19,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2022-11-21 09:02:19,427 INFO L240 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2022-11-21 09:02:19,427 INFO L428 stractBuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2022-11-21 09:02:19,427 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-21 09:02:19,428 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 17 transitions. [2022-11-21 09:02:19,428 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-21 09:02:19,428 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 09:02:19,428 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 09:02:19,429 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1] [2022-11-21 09:02:19,429 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-21 09:02:19,429 INFO L748 eck$LassoCheckResult]: Stem: 138#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 139#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~a~0#1, main_~x~0#1;havoc main_~a~0#1;havoc main_~x~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~a~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 143#L18-2 assume !!(main_~x~0#1 > 0);main_#t~nondet2#1 := ~bitwiseComplement(main_~a~0#1);assume main_#t~nondet2#1 != main_~a~0#1;assume main_~a~0#1 >= 0 || main_#t~nondet2#1 > 0;main_~a~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 145#L18 assume main_~a~0#1 > 0;main_~x~0#1 := main_~x~0#1 - main_~a~0#1; 144#L18-2 assume !!(main_~x~0#1 > 0);main_#t~nondet2#1 := ~bitwiseComplement(main_~a~0#1);assume main_#t~nondet2#1 != main_~a~0#1;assume main_~a~0#1 >= 0 || main_#t~nondet2#1 > 0;main_~a~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 134#L18 assume main_~a~0#1 > 0;main_~x~0#1 := main_~x~0#1 - main_~a~0#1; 135#L18-2 [2022-11-21 09:02:19,429 INFO L750 eck$LassoCheckResult]: Loop: 135#L18-2 assume !!(main_~x~0#1 > 0);main_#t~nondet2#1 := ~bitwiseComplement(main_~a~0#1);assume main_#t~nondet2#1 != main_~a~0#1;assume main_~a~0#1 >= 0 || main_#t~nondet2#1 > 0;main_~a~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 140#L18 assume !(main_~a~0#1 > 0);main_~x~0#1 := main_~x~0#1 + main_~a~0#1; 135#L18-2 [2022-11-21 09:02:19,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:02:19,430 INFO L85 PathProgramCache]: Analyzing trace with hash 889692233, now seen corresponding path program 2 times [2022-11-21 09:02:19,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:02:19,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733389458] [2022-11-21 09:02:19,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:02:19,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:02:19,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:02:19,437 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 09:02:19,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:02:19,443 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 09:02:19,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:02:19,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 3 times [2022-11-21 09:02:19,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:02:19,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535745936] [2022-11-21 09:02:19,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:02:19,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:02:19,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:02:19,449 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 09:02:19,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:02:19,453 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 09:02:19,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:02:19,454 INFO L85 PathProgramCache]: Analyzing trace with hash 295744366, now seen corresponding path program 2 times [2022-11-21 09:02:19,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:02:19,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005416044] [2022-11-21 09:02:19,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:02:19,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:02:19,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:02:19,462 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 09:02:19,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:02:19,469 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 09:02:19,513 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 09:02:19,513 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 09:02:19,514 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 09:02:19,514 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 09:02:19,514 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-21 09:02:19,514 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:02:19,514 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 09:02:19,514 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 09:02:19,514 INFO L133 ssoRankerPreferences]: Filename of dumped script: not-01.c_Iteration3_Loop [2022-11-21 09:02:19,515 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 09:02:19,515 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 09:02:19,516 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 09:02:19,519 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 09:02:19,580 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 09:02:19,580 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-21 09:02:19,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:02:19,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:02:19,582 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:02:19,595 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 09:02:19,595 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 09:02:19,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-11-21 09:02:19,621 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-21 09:02:19,621 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2#1=0} Honda state: {ULTIMATE.start_main_#t~nondet2#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-21 09:02:19,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-11-21 09:02:19,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:02:19,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:02:19,629 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:02:19,640 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 09:02:19,640 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 09:02:19,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-21 09:02:19,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-21 09:02:19,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:02:19,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:02:19,696 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:02:19,701 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-21 09:02:19,702 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 09:02:19,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-21 09:02:19,747 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-21 09:02:19,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-11-21 09:02:19,758 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 09:02:19,758 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 09:02:19,758 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 09:02:19,759 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 09:02:19,759 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-21 09:02:19,759 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:02:19,759 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 09:02:19,759 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 09:02:19,759 INFO L133 ssoRankerPreferences]: Filename of dumped script: not-01.c_Iteration3_Loop [2022-11-21 09:02:19,759 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 09:02:19,759 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 09:02:19,760 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 09:02:19,764 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 09:02:19,834 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 09:02:19,835 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-21 09:02:19,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:02:19,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:02:19,837 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:02:19,851 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-21 09:02:19,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-21 09:02:19,866 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 09:02:19,866 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 09:02:19,867 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 09:02:19,867 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 09:02:19,867 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 09:02:19,868 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-21 09:02:19,868 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 09:02:19,877 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-21 09:02:19,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-21 09:02:19,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:02:19,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:02:19,890 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:02:19,895 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-21 09:02:19,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-11-21 09:02:19,910 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 09:02:19,910 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 09:02:19,910 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 09:02:19,911 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 09:02:19,911 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 09:02:19,913 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-21 09:02:19,913 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 09:02:19,923 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-21 09:02:19,927 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-21 09:02:19,927 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-21 09:02:19,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:02:19,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:02:19,935 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:02:19,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-11-21 09:02:19,939 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-21 09:02:19,939 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-21 09:02:19,939 INFO L513 LassoAnalysis]: Proved termination. [2022-11-21 09:02:19,939 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~a~0#1) = 2*ULTIMATE.start_main_~a~0#1 + 1 Supporting invariants [] [2022-11-21 09:02:19,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-11-21 09:02:19,945 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-21 09:02:19,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:02:19,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:02:19,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 09:02:19,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:02:19,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:02:19,991 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 09:02:19,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:02:20,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:02:20,080 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 [2022-11-21 09:02:20,080 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8 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) [2022-11-21 09:02:20,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-11-21 09:02:20,106 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2022-11-21 09:02:20,112 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8. 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 16 states and 23 transitions. Complement of second has 5 states. [2022-11-21 09:02:20,112 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 [2022-11-21 09:02:20,114 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) [2022-11-21 09:02:20,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-21 09:02:20,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2022-11-21 09:02:20,120 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2022-11-21 09:02:20,120 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 09:02:20,120 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-21 09:02:20,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:02:20,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:02:20,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 09:02:20,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:02:20,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:02:20,177 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 09:02:20,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:02:20,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:02:20,226 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 [2022-11-21 09:02:20,227 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8 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) [2022-11-21 09:02:20,248 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8. 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 16 states and 23 transitions. Complement of second has 5 states. [2022-11-21 09:02:20,248 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 [2022-11-21 09:02:20,249 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) [2022-11-21 09:02:20,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2022-11-21 09:02:20,250 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2022-11-21 09:02:20,250 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 09:02:20,250 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-21 09:02:20,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:02:20,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:02:20,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 09:02:20,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:02:20,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:02:20,284 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 09:02:20,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:02:20,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:02:20,329 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 [2022-11-21 09:02:20,329 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8 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) [2022-11-21 09:02:20,347 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8. 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 17 states and 26 transitions. Complement of second has 6 states. [2022-11-21 09:02:20,348 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 [2022-11-21 09:02:20,348 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) [2022-11-21 09:02:20,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2022-11-21 09:02:20,349 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 2 letters. [2022-11-21 09:02:20,349 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 09:02:20,349 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 8 letters. Loop has 2 letters. [2022-11-21 09:02:20,350 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 09:02:20,350 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 4 letters. [2022-11-21 09:02:20,350 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 09:02:20,350 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 26 transitions. [2022-11-21 09:02:20,351 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-21 09:02:20,352 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 14 states and 20 transitions. [2022-11-21 09:02:20,352 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2022-11-21 09:02:20,352 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-11-21 09:02:20,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2022-11-21 09:02:20,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 09:02:20,352 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 20 transitions. [2022-11-21 09:02:20,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2022-11-21 09:02:20,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 6. [2022-11-21 09:02:20,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:02:20,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2022-11-21 09:02:20,354 INFO L240 hiAutomatonCegarLoop]: Abstraction has 6 states and 8 transitions. [2022-11-21 09:02:20,354 INFO L428 stractBuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2022-11-21 09:02:20,354 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-21 09:02:20,354 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2022-11-21 09:02:20,355 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-21 09:02:20,355 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 09:02:20,355 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 09:02:20,355 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-21 09:02:20,355 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-21 09:02:20,355 INFO L748 eck$LassoCheckResult]: Stem: 302#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 303#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~a~0#1, main_~x~0#1;havoc main_~a~0#1;havoc main_~x~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~a~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 299#L18-2 [2022-11-21 09:02:20,356 INFO L750 eck$LassoCheckResult]: Loop: 299#L18-2 assume !!(main_~x~0#1 > 0);main_#t~nondet2#1 := ~bitwiseComplement(main_~a~0#1);assume main_#t~nondet2#1 != main_~a~0#1;assume main_~a~0#1 >= 0 || main_#t~nondet2#1 > 0;main_~a~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 298#L18 assume main_~a~0#1 > 0;main_~x~0#1 := main_~x~0#1 - main_~a~0#1; 299#L18-2 [2022-11-21 09:02:20,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:02:20,356 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2022-11-21 09:02:20,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:02:20,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071193014] [2022-11-21 09:02:20,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:02:20,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:02:20,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:02:20,359 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 09:02:20,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:02:20,361 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 09:02:20,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:02:20,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1316, now seen corresponding path program 1 times [2022-11-21 09:02:20,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:02:20,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920911147] [2022-11-21 09:02:20,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:02:20,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:02:20,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:02:20,367 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 09:02:20,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:02:20,371 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 09:02:20,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:02:20,372 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 3 times [2022-11-21 09:02:20,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:02:20,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451398075] [2022-11-21 09:02:20,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:02:20,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:02:20,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:02:20,377 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 09:02:20,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:02:20,380 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 09:02:20,416 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 09:02:20,417 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 09:02:20,417 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 09:02:20,417 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 09:02:20,417 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-21 09:02:20,417 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:02:20,417 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 09:02:20,417 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 09:02:20,417 INFO L133 ssoRankerPreferences]: Filename of dumped script: not-01.c_Iteration4_Loop [2022-11-21 09:02:20,417 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 09:02:20,417 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 09:02:20,418 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 09:02:20,421 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 09:02:20,480 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 09:02:20,480 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-21 09:02:20,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:02:20,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:02:20,483 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:02:20,492 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 09:02:20,492 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 09:02:20,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-11-21 09:02:20,515 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-21 09:02:20,515 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2#1=0} Honda state: {ULTIMATE.start_main_#t~nondet2#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-21 09:02:20,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-11-21 09:02:20,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:02:20,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:02:20,522 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:02:20,532 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 09:02:20,532 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 09:02:20,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-11-21 09:02:20,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-11-21 09:02:20,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:02:20,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:02:20,572 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:02:20,586 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-21 09:02:20,586 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 09:02:20,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-11-21 09:02:20,759 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-21 09:02:20,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-11-21 09:02:20,763 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 09:02:20,763 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 09:02:20,763 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 09:02:20,764 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 09:02:20,764 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-21 09:02:20,764 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:02:20,764 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 09:02:20,764 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 09:02:20,764 INFO L133 ssoRankerPreferences]: Filename of dumped script: not-01.c_Iteration4_Loop [2022-11-21 09:02:20,764 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 09:02:20,764 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 09:02:20,765 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 09:02:20,773 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 09:02:20,857 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 09:02:20,857 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-21 09:02:20,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:02:20,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:02:20,859 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:02:20,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-11-21 09:02:20,864 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-21 09:02:20,878 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 09:02:20,878 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 09:02:20,879 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 09:02:20,879 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 09:02:20,879 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 09:02:20,880 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-21 09:02:20,880 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 09:02:20,889 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-21 09:02:20,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-11-21 09:02:20,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:02:20,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:02:20,901 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:02:20,913 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-21 09:02:20,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-11-21 09:02:20,928 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 09:02:20,928 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 09:02:20,928 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 09:02:20,928 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2022-11-21 09:02:20,929 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 09:02:20,932 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-11-21 09:02:20,932 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 09:02:20,948 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-21 09:02:20,952 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-21 09:02:20,952 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-21 09:02:20,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:02:20,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:02:20,954 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:02:20,964 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-21 09:02:20,964 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-21 09:02:20,964 INFO L513 LassoAnalysis]: Proved termination. [2022-11-21 09:02:20,965 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2022-11-21 09:02:20,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-11-21 09:02:20,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-11-21 09:02:20,975 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-21 09:02:20,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:02:20,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:02:20,998 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 09:02:20,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:02:21,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:02:21,007 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 09:02:21,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:02:21,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:02:21,029 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 [2022-11-21 09:02:21,030 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:02:21,048 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 12 states and 18 transitions. Complement of second has 6 states. [2022-11-21 09:02:21,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-21 09:02:21,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:02:21,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2022-11-21 09:02:21,056 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 2 letters. Loop has 2 letters. [2022-11-21 09:02:21,056 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 09:02:21,056 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 4 letters. Loop has 2 letters. [2022-11-21 09:02:21,056 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 09:02:21,056 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 2 letters. Loop has 4 letters. [2022-11-21 09:02:21,057 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 09:02:21,057 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 18 transitions. [2022-11-21 09:02:21,059 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-21 09:02:21,059 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 0 states and 0 transitions. [2022-11-21 09:02:21,059 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-21 09:02:21,060 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-21 09:02:21,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-21 09:02:21,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:02:21,060 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-21 09:02:21,060 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-21 09:02:21,060 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-21 09:02:21,060 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-21 09:02:21,060 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-11-21 09:02:21,061 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-21 09:02:21,061 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-11-21 09:02:21,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.11 09:02:21 BoogieIcfgContainer [2022-11-21 09:02:21,070 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-21 09:02:21,071 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 09:02:21,071 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 09:02:21,071 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 09:02:21,072 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:02:17" (3/4) ... [2022-11-21 09:02:21,076 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-21 09:02:21,076 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 09:02:21,077 INFO L158 Benchmark]: Toolchain (without parser) took 4276.59ms. Allocated memory is still 157.3MB. Free memory was 120.5MB in the beginning and 83.2MB in the end (delta: 37.3MB). Peak memory consumption was 42.6MB. Max. memory is 16.1GB. [2022-11-21 09:02:21,078 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 117.4MB. Free memory is still 92.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 09:02:21,084 INFO L158 Benchmark]: CACSL2BoogieTranslator took 216.79ms. Allocated memory is still 157.3MB. Free memory was 120.1MB in the beginning and 111.0MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-21 09:02:21,088 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.73ms. Allocated memory is still 157.3MB. Free memory was 111.0MB in the beginning and 109.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 09:02:21,088 INFO L158 Benchmark]: Boogie Preprocessor took 21.55ms. Allocated memory is still 157.3MB. Free memory was 109.6MB in the beginning and 108.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 09:02:21,089 INFO L158 Benchmark]: RCFGBuilder took 305.11ms. Allocated memory is still 157.3MB. Free memory was 108.6MB in the beginning and 100.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-21 09:02:21,089 INFO L158 Benchmark]: BuchiAutomizer took 3688.57ms. Allocated memory is still 157.3MB. Free memory was 100.2MB in the beginning and 84.1MB in the end (delta: 16.1MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. [2022-11-21 09:02:21,090 INFO L158 Benchmark]: Witness Printer took 5.31ms. Allocated memory is still 157.3MB. Free memory was 84.1MB in the beginning and 83.2MB in the end (delta: 877.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 09:02:21,095 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 117.4MB. Free memory is still 92.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 216.79ms. Allocated memory is still 157.3MB. Free memory was 120.1MB in the beginning and 111.0MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.73ms. Allocated memory is still 157.3MB. Free memory was 111.0MB in the beginning and 109.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.55ms. Allocated memory is still 157.3MB. Free memory was 109.6MB in the beginning and 108.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 305.11ms. Allocated memory is still 157.3MB. Free memory was 108.6MB in the beginning and 100.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 3688.57ms. Allocated memory is still 157.3MB. Free memory was 100.2MB in the beginning and 84.1MB in the end (delta: 16.1MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. * Witness Printer took 5.31ms. Allocated memory is still 157.3MB. Free memory was 84.1MB in the beginning and 83.2MB in the end (delta: 877.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (0 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 1 + 2 * a and consists of 5 locations. One deterministic module has affine ranking function 1 + 2 * a and consists of 3 locations. One deterministic module has affine ranking function x and consists of 4 locations. One nondeterministic module has affine ranking function 1 + 2 * a and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.6s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.8s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 10 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 36 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 30 mSDsluCounter, 42 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 58 IncrementalHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 30 mSDtfsCounter, 58 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital20 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf96 smp90 dnf117 smp100 tf106 neg93 sie118 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 65ms VariablesStem: 0 VariablesLoop: 4 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 0 MotzkinApplications: 4 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-11-21 09:02:21,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-11-21 09:02:21,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9fcfb52-8a07-4368-8080-7299c317fbae/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE