./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 6b4ec56b 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_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN --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 702a5cb4e98140bb9dbcfd0fb89e24e07deb7e8ce40ea61b05e70376d58bbad7 --- 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-6b4ec56 [2022-11-20 12:20:16,750 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:20:16,753 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:20:16,795 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:20:16,796 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:20:16,800 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:20:16,802 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:20:16,806 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:20:16,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:20:16,812 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:20:16,813 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:20:16,814 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:20:16,815 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:20:16,816 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:20:16,817 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:20:16,818 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:20:16,819 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:20:16,819 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:20:16,821 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:20:16,827 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:20:16,829 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:20:16,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:20:16,837 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:20:16,837 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:20:16,850 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:20:16,851 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:20:16,851 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:20:16,852 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:20:16,853 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:20:16,854 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:20:16,854 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:20:16,855 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:20:16,856 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:20:16,856 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:20:16,857 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:20:16,858 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:20:16,862 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:20:16,863 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:20:16,863 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:20:16,865 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:20:16,866 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:20:16,867 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-11-20 12:20:16,907 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:20:16,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:20:16,908 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:20:16,908 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:20:16,910 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:20:16,910 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:20:16,910 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:20:16,910 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-20 12:20:16,911 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-20 12:20:16,911 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-20 12:20:16,912 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-20 12:20:16,912 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-20 12:20:16,912 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-20 12:20:16,912 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:20:16,913 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:20:16,913 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:20:16,913 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:20:16,913 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-20 12:20:16,913 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-20 12:20:16,913 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-20 12:20:16,913 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:20:16,914 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-20 12:20:16,914 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:20:16,914 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-20 12:20:16,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:20:16,914 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:20:16,915 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:20:16,915 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:20:16,917 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-20 12:20:16,917 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_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 702a5cb4e98140bb9dbcfd0fb89e24e07deb7e8ce40ea61b05e70376d58bbad7 [2022-11-20 12:20:17,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:20:17,245 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:20:17,248 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:20:17,250 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:20:17,251 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:20:17,252 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c [2022-11-20 12:20:20,275 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:20:20,525 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:20:20,526 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c [2022-11-20 12:20:20,532 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/data/db2254593/6ad3087375394b2ea641725c2da4d036/FLAG2f5a091b8 [2022-11-20 12:20:20,554 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/data/db2254593/6ad3087375394b2ea641725c2da4d036 [2022-11-20 12:20:20,557 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:20:20,560 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:20:20,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:20:20,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:20:20,567 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:20:20,568 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:20:20" (1/1) ... [2022-11-20 12:20:20,569 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cdd1825 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:20:20, skipping insertion in model container [2022-11-20 12:20:20,569 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:20:20" (1/1) ... [2022-11-20 12:20:20,577 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:20:20,595 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:20:20,733 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:20:20,738 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:20:20,752 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:20:20,765 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:20:20,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:20:20 WrapperNode [2022-11-20 12:20:20,766 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:20:20,767 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:20:20,767 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:20:20,768 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:20:20,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:20:20" (1/1) ... [2022-11-20 12:20:20,781 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:20:20" (1/1) ... [2022-11-20 12:20:20,798 INFO L138 Inliner]: procedures = 5, calls = 5, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 13 [2022-11-20 12:20:20,798 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:20:20,799 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:20:20,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:20:20,799 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:20:20,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:20:20" (1/1) ... [2022-11-20 12:20:20,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:20:20" (1/1) ... [2022-11-20 12:20:20,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:20:20" (1/1) ... [2022-11-20 12:20:20,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:20:20" (1/1) ... [2022-11-20 12:20:20,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:20:20" (1/1) ... [2022-11-20 12:20:20,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:20:20" (1/1) ... [2022-11-20 12:20:20,815 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:20:20" (1/1) ... [2022-11-20 12:20:20,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:20:20" (1/1) ... [2022-11-20 12:20:20,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:20:20,818 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:20:20,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:20:20,818 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:20:20,819 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:20:20" (1/1) ... [2022-11-20 12:20:20,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:20,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:20,856 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:20,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-20 12:20:20,907 INFO L130 BoogieDeclarations]: Found specification of procedure p [2022-11-20 12:20:20,907 INFO L138 BoogieDeclarations]: Found implementation of procedure p [2022-11-20 12:20:20,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:20:20,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:20:20,975 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:20:20,977 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:20:21,113 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:20:21,121 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:20:21,121 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 12:20:21,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:20:21 BoogieIcfgContainer [2022-11-20 12:20:21,123 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:20:21,124 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-20 12:20:21,124 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-20 12:20:21,138 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-20 12:20:21,139 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 12:20:21,139 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 12:20:20" (1/3) ... [2022-11-20 12:20:21,142 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@77cbbbe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 12:20:21, skipping insertion in model container [2022-11-20 12:20:21,142 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 12:20:21,142 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:20:20" (2/3) ... [2022-11-20 12:20:21,144 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@77cbbbe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 12:20:21, skipping insertion in model container [2022-11-20 12:20:21,144 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 12:20:21,144 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:20:21" (3/3) ... [2022-11-20 12:20:21,146 INFO L332 chiAutomizerObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex4.c [2022-11-20 12:20:21,222 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-20 12:20:21,222 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-20 12:20:21,223 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-20 12:20:21,223 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-20 12:20:21,223 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-20 12:20:21,223 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-20 12:20:21,223 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-20 12:20:21,224 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-20 12:20:21,229 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 12:20:21,267 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-20 12:20:21,268 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 12:20:21,268 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 12:20:21,275 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-11-20 12:20:21,275 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-20 12:20:21,276 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-20 12:20:21,276 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 12:20:21,280 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-20 12:20:21,280 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 12:20:21,280 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 12:20:21,280 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-11-20 12:20:21,281 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-20 12:20:21,289 INFO L748 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 14#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_#t~ret5#1, main_~m~0#1, main_~n~0#1, main_~r~0#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~n~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1;main_~r~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 16#L28true assume (main_~m~0#1 >= 0 && main_~n~0#1 >= 0) && main_~r~0#1 >= 0; 9#L29true call main_#t~ret5#1 := p(main_~m~0#1, main_~n~0#1, main_~r~0#1);< 17#pENTRYtrue [2022-11-20 12:20:21,292 INFO L750 eck$LassoCheckResult]: Loop: 17#pENTRYtrue ~m := #in~m;~n := #in~n;~r := #in~r; 2#L13true assume ~r > 0; 18#L14true call #t~ret0 := p(~m, ~r - 1, ~n);< 17#pENTRYtrue [2022-11-20 12:20:21,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:21,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1356593, now seen corresponding path program 1 times [2022-11-20 12:20:21,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:21,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133956225] [2022-11-20 12:20:21,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:21,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:21,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:20:21,425 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:20:21,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:20:21,466 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:20:21,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:21,470 INFO L85 PathProgramCache]: Analyzing trace with hash 29913, now seen corresponding path program 1 times [2022-11-20 12:20:21,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:21,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359427179] [2022-11-20 12:20:21,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:21,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:21,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:20:21,495 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:20:21,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:20:21,513 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:20:21,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:21,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1759556521, now seen corresponding path program 1 times [2022-11-20 12:20:21,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:21,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412716288] [2022-11-20 12:20:21,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:21,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:21,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:20:21,537 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:20:21,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:20:21,553 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:20:21,721 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 12:20:21,722 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 12:20:21,722 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 12:20:21,722 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 12:20:21,722 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 12:20:21,722 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:21,723 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 12:20:21,723 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 12:20:21,723 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration1_Loop [2022-11-20 12:20:21,723 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 12:20:21,724 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 12:20:21,767 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:21,778 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:21,782 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:21,796 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:21,799 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:21,806 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:21,815 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:21,837 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:21,937 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 12:20:21,939 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 12:20:21,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:21,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:21,945 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:21,955 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:20:21,955 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:20:21,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-20 12:20:21,982 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 12:20:21,983 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#res=0} Honda state: {p_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 12:20:21,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:21,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:21,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:21,995 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:22,003 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:20:22,004 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:20:22,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-20 12:20:22,027 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 12:20:22,027 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#t~ret0=0} Honda state: {p_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 12:20:22,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:22,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:22,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:22,038 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:22,049 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:20:22,049 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:20:22,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-20 12:20:22,073 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 12:20:22,073 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_~m=0} Honda state: {p_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 12:20:22,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:22,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:22,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:22,085 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:22,096 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:20:22,096 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:20:22,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-20 12:20:22,127 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 12:20:22,127 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_~n=0} Honda state: {p_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 12:20:22,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:22,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:22,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:22,138 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:22,148 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:20:22,148 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:20:22,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-20 12:20:22,175 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 12:20:22,175 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#t~ret1=0} Honda state: {p_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 12:20:22,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:22,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:22,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:22,186 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:22,195 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:20:22,195 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:20:22,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-20 12:20:22,227 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 12:20:22,227 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#in~m=0} Honda state: {p_#in~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 12:20:22,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:22,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:22,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:22,237 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:22,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-20 12:20:22,246 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:20:22,247 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:20:22,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:22,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:22,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:22,295 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:22,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-20 12:20:22,300 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 12:20:22,302 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:20:22,401 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 12:20:22,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:22,405 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 12:20:22,405 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 12:20:22,405 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 12:20:22,405 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 12:20:22,406 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 12:20:22,406 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:22,406 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 12:20:22,406 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 12:20:22,406 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration1_Loop [2022-11-20 12:20:22,406 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 12:20:22,406 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 12:20:22,408 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:22,412 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:22,415 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:22,417 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:22,428 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:22,438 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:22,445 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:22,464 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:22,565 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 12:20:22,570 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 12:20:22,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:22,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:22,599 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:22,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-20 12:20:22,616 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 [2022-11-20 12:20:22,629 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:20:22,630 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:20:22,630 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:20:22,630 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:20:22,630 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:20:22,632 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:20:22,633 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:20:22,643 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:20:22,655 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2022-11-20 12:20:22,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:22,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:22,659 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:22,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-20 12:20:22,670 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 [2022-11-20 12:20:22,682 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:20:22,682 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:20:22,682 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:20:22,683 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:20:22,683 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:20:22,683 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:20:22,683 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:20:22,696 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:20:22,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:22,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:22,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:22,706 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:22,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-11-20 12:20:22,708 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 [2022-11-20 12:20:22,718 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:20:22,718 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:20:22,718 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:20:22,719 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:20:22,719 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:20:22,719 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:20:22,719 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:20:22,728 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:20:22,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:22,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:22,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:22,732 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:22,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-20 12:20:22,743 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 [2022-11-20 12:20:22,753 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:20:22,753 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:20:22,754 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:20:22,754 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:20:22,754 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:20:22,755 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:20:22,755 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:20:22,758 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:20:22,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:22,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:22,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:22,764 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:22,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-20 12:20:22,767 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 [2022-11-20 12:20:22,777 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:20:22,778 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:20:22,778 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:20:22,778 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:20:22,778 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:20:22,779 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:20:22,779 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:20:22,790 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:20:22,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2022-11-20 12:20:22,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:22,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:22,796 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:22,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-20 12:20:22,803 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 [2022-11-20 12:20:22,815 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:20:22,815 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:20:22,815 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:20:22,815 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:20:22,815 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:20:22,817 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:20:22,817 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:20:22,846 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:20:22,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:22,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:22,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:22,855 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:22,863 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 [2022-11-20 12:20:22,876 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:20:22,877 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:20:22,877 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:20:22,877 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:20:22,877 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:20:22,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-11-20 12:20:22,879 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:20:22,879 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:20:22,889 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:20:22,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:22,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:22,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:22,898 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:22,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-11-20 12:20:22,902 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 [2022-11-20 12:20:22,912 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:20:22,913 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:20:22,913 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:20:22,913 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:20:22,913 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:20:22,914 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:20:22,914 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:20:22,921 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:20:22,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:22,925 INFO L490 LassoAnalysis]: Using template '2-nested'. [2022-11-20 12:20:22,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:22,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:22,927 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:22,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-11-20 12:20:22,934 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 [2022-11-20 12:20:22,945 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:20:22,945 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:20:22,945 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:20:22,945 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:20:22,945 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-11-20 12:20:22,946 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2022-11-20 12:20:22,946 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:20:22,950 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:20:22,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:22,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:22,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:22,955 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:22,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-11-20 12:20:22,959 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 [2022-11-20 12:20:22,971 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:20:22,971 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:20:22,971 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:20:22,971 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:20:22,972 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-11-20 12:20:22,973 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2022-11-20 12:20:22,973 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:20:22,998 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:20:23,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:23,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:23,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:23,014 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:23,037 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 [2022-11-20 12:20:23,050 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:20:23,050 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:20:23,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-11-20 12:20:23,051 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:20:23,051 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:20:23,051 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-11-20 12:20:23,053 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2022-11-20 12:20:23,053 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:20:23,063 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:20:23,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:23,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:23,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:23,073 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:23,081 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 [2022-11-20 12:20:23,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-11-20 12:20:23,101 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:20:23,102 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:20:23,102 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:20:23,102 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:20:23,102 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-11-20 12:20:23,103 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2022-11-20 12:20:23,103 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:20:23,118 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:20:23,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:23,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:23,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:23,128 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:23,131 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 [2022-11-20 12:20:23,144 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:20:23,144 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:20:23,144 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:20:23,144 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:20:23,144 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-11-20 12:20:23,145 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2022-11-20 12:20:23,145 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:20:23,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-11-20 12:20:23,178 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:20:23,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:23,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:23,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:23,185 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:23,200 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 [2022-11-20 12:20:23,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-11-20 12:20:23,213 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:20:23,214 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:20:23,214 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:20:23,214 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:20:23,214 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-11-20 12:20:23,216 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2022-11-20 12:20:23,216 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:20:23,226 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:20:23,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:23,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:23,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:23,236 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:23,240 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 [2022-11-20 12:20:23,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-11-20 12:20:23,253 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:20:23,254 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:20:23,254 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:20:23,254 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:20:23,254 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-11-20 12:20:23,257 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2022-11-20 12:20:23,257 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:20:23,268 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 12:20:23,274 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-20 12:20:23,274 INFO L444 ModelExtractionUtils]: 3 out of 7 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-20 12:20:23,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:23,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:23,309 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:23,311 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 12:20:23,311 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 12:20:23,311 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 12:20:23,312 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*p_#in~n + 1*p_#in~r f1 = 1*p_#in~r Supporting invariants [] [2022-11-20 12:20:23,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-11-20 12:20:23,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:23,320 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 12:20:23,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:23,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:23,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:20:23,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:20:23,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:23,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 12:20:23,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:20:23,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:20:23,713 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-11-20 12:20:23,715 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:23,939 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3). Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 48 states and 60 transitions. Complement of second has 12 states. [2022-11-20 12:20:23,942 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 [2022-11-20 12:20:23,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:23,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2022-11-20 12:20:23,949 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 3 letters. [2022-11-20 12:20:23,950 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:20:23,951 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 3 letters. [2022-11-20 12:20:23,951 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:20:23,951 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 6 letters. [2022-11-20 12:20:23,951 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:20:23,952 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 60 transitions. [2022-11-20 12:20:23,956 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-20 12:20:23,960 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 21 states and 24 transitions. [2022-11-20 12:20:23,961 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2022-11-20 12:20:23,962 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2022-11-20 12:20:23,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 24 transitions. [2022-11-20 12:20:23,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 12:20:23,963 INFO L218 hiAutomatonCegarLoop]: Abstraction has 21 states and 24 transitions. [2022-11-20 12:20:23,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 24 transitions. [2022-11-20 12:20:23,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 14. [2022-11-20 12:20:23,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:23,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2022-11-20 12:20:23,990 INFO L240 hiAutomatonCegarLoop]: Abstraction has 14 states and 17 transitions. [2022-11-20 12:20:23,990 INFO L428 stractBuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2022-11-20 12:20:23,990 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-20 12:20:23,990 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 17 transitions. [2022-11-20 12:20:23,991 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-20 12:20:23,991 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 12:20:23,991 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 12:20:23,991 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2022-11-20 12:20:23,992 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-20 12:20:23,992 INFO L748 eck$LassoCheckResult]: Stem: 132#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 133#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_#t~ret5#1, main_~m~0#1, main_~n~0#1, main_~r~0#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~n~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1;main_~r~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 134#L28 assume (main_~m~0#1 >= 0 && main_~n~0#1 >= 0) && main_~r~0#1 >= 0; 125#L29 call main_#t~ret5#1 := p(main_~m~0#1, main_~n~0#1, main_~r~0#1);< 135#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 124#L13 assume !(~r > 0); 126#L16 [2022-11-20 12:20:23,992 INFO L750 eck$LassoCheckResult]: Loop: 126#L16 assume ~n > 0; 129#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 131#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 137#L13 assume !(~r > 0); 126#L16 [2022-11-20 12:20:23,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:23,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1303685879, now seen corresponding path program 1 times [2022-11-20 12:20:23,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:23,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666067033] [2022-11-20 12:20:23,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:23,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:23,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:20:24,000 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:20:24,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:20:24,005 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:20:24,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:24,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1221437, now seen corresponding path program 1 times [2022-11-20 12:20:24,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:24,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890577489] [2022-11-20 12:20:24,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:24,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:24,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:20:24,011 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:20:24,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:20:24,015 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:20:24,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:24,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1125326029, now seen corresponding path program 1 times [2022-11-20 12:20:24,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:24,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203219834] [2022-11-20 12:20:24,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:24,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:24,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:20:24,024 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:20:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:20:24,032 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:20:24,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:24,193 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 12:20:24,193 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 12:20:24,194 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 12:20:24,194 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 12:20:24,194 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 12:20:24,194 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:24,194 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 12:20:24,194 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 12:20:24,194 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration2_Loop [2022-11-20 12:20:24,195 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 12:20:24,195 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 12:20:24,199 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:24,202 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:24,205 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:24,208 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:24,220 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:24,302 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 12:20:24,303 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 12:20:24,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:24,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:24,304 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:24,309 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:20:24,309 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:20:24,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-11-20 12:20:24,339 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 12:20:24,339 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#res=0} Honda state: {p_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 12:20:24,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:24,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:24,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:24,350 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:24,354 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:20:24,354 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:20:24,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-11-20 12:20:24,376 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 12:20:24,376 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#t~ret0=0} Honda state: {p_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 12:20:24,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:24,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:24,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:24,386 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:24,391 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:20:24,391 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:20:24,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-11-20 12:20:24,419 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 12:20:24,419 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#t~ret1=0} Honda state: {p_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 12:20:24,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:24,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:24,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:24,429 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:24,434 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:20:24,434 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:20:24,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-11-20 12:20:24,463 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 12:20:24,463 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#in~m=0, p_~m=0, p_~r=0, p_#in~r=0} Honda state: {p_#in~m=0, p_~m=0, p_~r=0, p_#in~r=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 12:20:24,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:24,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:24,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:24,469 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:24,474 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:20:24,474 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:20:24,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-11-20 12:20:24,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:24,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:24,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:24,517 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:24,524 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 12:20:24,524 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:20:24,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-11-20 12:20:24,757 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 12:20:24,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2022-11-20 12:20:24,761 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 12:20:24,761 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 12:20:24,761 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 12:20:24,761 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 12:20:24,761 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 12:20:24,761 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:24,761 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 12:20:24,761 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 12:20:24,762 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration2_Loop [2022-11-20 12:20:24,762 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 12:20:24,762 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 12:20:24,763 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:24,767 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:24,770 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:24,781 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:24,784 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:24,871 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 12:20:24,871 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 12:20:24,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:24,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:24,875 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:24,884 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 [2022-11-20 12:20:24,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-11-20 12:20:24,897 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:20:24,897 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:20:24,897 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:20:24,897 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:20:24,898 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:20:24,898 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:20:24,899 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:20:24,914 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:20:24,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:24,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:24,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:24,925 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:24,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-11-20 12:20:24,929 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 12:20:24,942 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:20:24,942 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:20:24,943 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:20:24,943 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:20:24,943 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:20:24,944 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:20:24,944 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:20:24,953 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:20:24,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:24,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:24,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:24,964 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:24,968 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 [2022-11-20 12:20:24,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-11-20 12:20:24,981 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:20:24,981 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:20:24,982 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:20:24,982 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:20:24,982 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:20:24,984 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:20:24,984 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:20:25,002 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:20:25,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:25,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:25,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:25,012 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:25,016 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 [2022-11-20 12:20:25,029 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:20:25,030 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:20:25,030 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:20:25,030 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:20:25,030 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:20:25,032 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:20:25,033 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:20:25,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-11-20 12:20:25,042 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:20:25,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:25,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:25,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:25,052 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:25,056 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 [2022-11-20 12:20:25,069 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:20:25,069 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:20:25,069 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:20:25,069 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:20:25,069 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:20:25,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-11-20 12:20:25,071 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:20:25,071 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:20:25,086 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 12:20:25,107 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-20 12:20:25,107 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-20 12:20:25,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:25,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:25,109 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:25,115 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 12:20:25,115 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 12:20:25,115 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 12:20:25,116 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(p_~n) = 1*p_~n Supporting invariants [] [2022-11-20 12:20:25,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2022-11-20 12:20:25,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:25,125 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 12:20:25,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:25,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:25,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:20:25,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:20:25,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:25,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:20:25,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:20:25,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:20:25,290 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2022-11-20 12:20:25,290 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5 Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:25,325 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 26 states and 31 transitions. Complement of second has 13 states. [2022-11-20 12:20:25,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2022-11-20 12:20:25,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:25,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2022-11-20 12:20:25,327 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 6 letters. Loop has 4 letters. [2022-11-20 12:20:25,327 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:20:25,327 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 10 letters. Loop has 4 letters. [2022-11-20 12:20:25,328 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:20:25,328 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 6 letters. Loop has 8 letters. [2022-11-20 12:20:25,328 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:20:25,329 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 31 transitions. [2022-11-20 12:20:25,334 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-20 12:20:25,336 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 21 states and 25 transitions. [2022-11-20 12:20:25,337 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2022-11-20 12:20:25,337 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2022-11-20 12:20:25,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 25 transitions. [2022-11-20 12:20:25,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 12:20:25,338 INFO L218 hiAutomatonCegarLoop]: Abstraction has 21 states and 25 transitions. [2022-11-20 12:20:25,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 25 transitions. [2022-11-20 12:20:25,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2022-11-20 12:20:25,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 5 states have call successors, (5), 4 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:25,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2022-11-20 12:20:25,341 INFO L240 hiAutomatonCegarLoop]: Abstraction has 19 states and 23 transitions. [2022-11-20 12:20:25,341 INFO L428 stractBuchiCegarLoop]: Abstraction has 19 states and 23 transitions. [2022-11-20 12:20:25,341 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-20 12:20:25,342 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 23 transitions. [2022-11-20 12:20:25,342 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-20 12:20:25,342 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 12:20:25,342 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 12:20:25,343 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:20:25,343 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-20 12:20:25,344 INFO L748 eck$LassoCheckResult]: Stem: 237#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 238#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_#t~ret5#1, main_~m~0#1, main_~n~0#1, main_~r~0#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~n~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1;main_~r~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 239#L28 assume (main_~m~0#1 >= 0 && main_~n~0#1 >= 0) && main_~r~0#1 >= 0; 227#L29 call main_#t~ret5#1 := p(main_~m~0#1, main_~n~0#1, main_~r~0#1);< 240#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 226#L13 assume !(~r > 0); 229#L16 assume ~n > 0; 231#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 236#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 242#L13 assume ~r > 0; 234#L14 [2022-11-20 12:20:25,344 INFO L750 eck$LassoCheckResult]: Loop: 234#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 235#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 244#L13 assume ~r > 0; 234#L14 [2022-11-20 12:20:25,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:25,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1125326032, now seen corresponding path program 1 times [2022-11-20 12:20:25,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:25,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318167938] [2022-11-20 12:20:25,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:25,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:25,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:20:25,355 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:20:25,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:20:25,364 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:20:25,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:25,365 INFO L85 PathProgramCache]: Analyzing trace with hash 57663, now seen corresponding path program 2 times [2022-11-20 12:20:25,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:25,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800071279] [2022-11-20 12:20:25,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:25,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:25,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:20:25,377 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:20:25,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:20:25,395 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:20:25,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:25,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1926921136, now seen corresponding path program 1 times [2022-11-20 12:20:25,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:25,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359323100] [2022-11-20 12:20:25,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:25,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:25,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:20:25,412 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:20:25,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:20:25,428 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:20:25,548 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 12:20:25,549 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 12:20:25,549 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 12:20:25,549 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 12:20:25,549 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 12:20:25,549 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:25,549 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 12:20:25,549 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 12:20:25,550 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration3_Loop [2022-11-20 12:20:25,550 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 12:20:25,550 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 12:20:25,551 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:25,564 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:25,567 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:25,574 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:25,577 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:25,646 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 12:20:25,647 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 12:20:25,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:25,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:25,650 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:25,654 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:20:25,654 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:20:25,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-11-20 12:20:25,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:25,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:25,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:25,702 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:25,707 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 12:20:25,707 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:20:25,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2022-11-20 12:20:37,760 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2022-11-20 12:20:37,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2022-11-20 12:20:37,765 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 12:20:37,765 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 12:20:37,765 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 12:20:37,765 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 12:20:37,766 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 12:20:37,766 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:37,766 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 12:20:37,766 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 12:20:37,766 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration3_Loop [2022-11-20 12:20:37,766 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 12:20:37,766 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 12:20:37,767 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:37,774 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:37,788 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:37,795 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:37,798 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:37,871 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 12:20:37,872 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 12:20:37,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:37,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:37,873 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:37,884 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 [2022-11-20 12:20:37,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2022-11-20 12:20:37,897 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:20:37,898 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:20:37,898 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:20:37,898 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:20:37,898 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:20:37,899 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:20:37,899 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:20:37,908 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:20:37,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:37,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:37,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:37,914 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:37,923 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 [2022-11-20 12:20:37,936 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:20:37,936 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:20:37,936 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:20:37,936 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:20:37,936 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:20:37,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2022-11-20 12:20:37,939 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:20:37,939 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:20:37,954 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:20:37,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:37,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:37,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:37,961 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:37,965 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 [2022-11-20 12:20:37,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2022-11-20 12:20:37,978 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:20:37,978 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:20:37,978 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:20:37,978 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:20:37,978 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:20:37,980 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:20:37,980 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:20:37,994 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:20:38,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:38,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:38,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:38,005 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:38,009 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 [2022-11-20 12:20:38,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2022-11-20 12:20:38,022 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:20:38,022 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:20:38,022 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:20:38,022 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:20:38,022 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:20:38,023 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:20:38,023 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:20:38,038 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:20:38,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:38,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:38,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:38,044 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:38,050 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 [2022-11-20 12:20:38,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2022-11-20 12:20:38,065 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:20:38,065 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:20:38,065 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:20:38,065 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:20:38,065 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:20:38,066 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:20:38,066 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:20:38,075 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:20:38,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:38,079 INFO L490 LassoAnalysis]: Using template '2-nested'. [2022-11-20 12:20:38,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:38,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:38,080 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:38,084 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 [2022-11-20 12:20:38,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2022-11-20 12:20:38,096 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:20:38,097 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:20:38,097 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:20:38,097 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:20:38,097 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-11-20 12:20:38,098 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2022-11-20 12:20:38,098 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:20:38,126 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:20:38,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:38,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:38,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:38,131 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:38,137 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 [2022-11-20 12:20:38,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2022-11-20 12:20:38,151 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:20:38,151 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:20:38,152 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:20:38,152 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:20:38,152 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-11-20 12:20:38,155 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2022-11-20 12:20:38,155 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:20:38,174 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 12:20:38,184 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2022-11-20 12:20:38,184 INFO L444 ModelExtractionUtils]: 5 out of 11 variables were initially zero. Simplification set additionally 2 variables to zero. [2022-11-20 12:20:38,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:38,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:38,190 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:38,193 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 12:20:38,193 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 12:20:38,193 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 12:20:38,194 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*p_~n + 1*p_~r f1 = 1*p_~n Supporting invariants [] [2022-11-20 12:20:38,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2022-11-20 12:20:38,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:38,199 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 12:20:38,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:38,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:38,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:20:38,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:20:38,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:38,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 12:20:38,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:20:38,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:20:38,505 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-11-20 12:20:38,506 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 23 transitions. cyclomatic complexity: 7 Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:38,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:38,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:38,636 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 23 transitions. cyclomatic complexity: 7. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 43 states and 51 transitions. Complement of second has 9 states. [2022-11-20 12:20:38,637 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 [2022-11-20 12:20:38,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:38,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2022-11-20 12:20:38,638 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 3 letters. [2022-11-20 12:20:38,639 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:20:38,639 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 13 letters. Loop has 3 letters. [2022-11-20 12:20:38,639 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:20:38,639 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 6 letters. [2022-11-20 12:20:38,639 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:20:38,640 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 51 transitions. [2022-11-20 12:20:38,641 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-20 12:20:38,643 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 37 states and 45 transitions. [2022-11-20 12:20:38,643 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2022-11-20 12:20:38,644 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2022-11-20 12:20:38,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 45 transitions. [2022-11-20 12:20:38,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 12:20:38,644 INFO L218 hiAutomatonCegarLoop]: Abstraction has 37 states and 45 transitions. [2022-11-20 12:20:38,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 45 transitions. [2022-11-20 12:20:38,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2022-11-20 12:20:38,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 23 states have internal predecessors, (28), 8 states have call successors, (11), 8 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:38,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2022-11-20 12:20:38,648 INFO L240 hiAutomatonCegarLoop]: Abstraction has 32 states and 39 transitions. [2022-11-20 12:20:38,648 INFO L428 stractBuchiCegarLoop]: Abstraction has 32 states and 39 transitions. [2022-11-20 12:20:38,648 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-20 12:20:38,648 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 39 transitions. [2022-11-20 12:20:38,649 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-20 12:20:38,649 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 12:20:38,649 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 12:20:38,651 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:20:38,651 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-20 12:20:38,652 INFO L748 eck$LassoCheckResult]: Stem: 370#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 371#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_#t~ret5#1, main_~m~0#1, main_~n~0#1, main_~r~0#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~n~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1;main_~r~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 372#L28 assume (main_~m~0#1 >= 0 && main_~n~0#1 >= 0) && main_~r~0#1 >= 0; 361#L29 call main_#t~ret5#1 := p(main_~m~0#1, main_~n~0#1, main_~r~0#1);< 375#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 387#L13 assume !(~r > 0); 386#L16 assume ~n > 0; 376#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 384#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 382#L13 assume ~r > 0; 368#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 378#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 385#L13 assume !(~r > 0); 379#L16 [2022-11-20 12:20:38,652 INFO L750 eck$LassoCheckResult]: Loop: 379#L16 assume ~n > 0; 364#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 366#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 380#L13 assume !(~r > 0); 379#L16 [2022-11-20 12:20:38,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:38,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1926921139, now seen corresponding path program 2 times [2022-11-20 12:20:38,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:38,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942051972] [2022-11-20 12:20:38,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:38,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:38,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:20:38,689 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:20:38,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:20:38,704 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:20:38,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:38,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1221437, now seen corresponding path program 2 times [2022-11-20 12:20:38,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:38,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808328313] [2022-11-20 12:20:38,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:38,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:38,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:20:38,714 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:20:38,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:20:38,727 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:20:38,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:38,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1157887471, now seen corresponding path program 3 times [2022-11-20 12:20:38,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:38,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718297489] [2022-11-20 12:20:38,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:38,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:38,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:20:38,742 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:20:38,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:20:38,757 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:20:38,873 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 12:20:38,873 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 12:20:38,873 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 12:20:38,874 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 12:20:38,874 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 12:20:38,874 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:38,874 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 12:20:38,874 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 12:20:38,874 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration4_Loop [2022-11-20 12:20:38,874 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 12:20:38,874 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 12:20:38,876 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:38,883 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:38,885 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:38,888 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:38,898 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:38,960 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 12:20:38,960 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 12:20:38,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:38,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:38,962 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:38,971 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:20:38,972 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:20:38,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2022-11-20 12:20:39,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:39,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:39,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:39,020 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:39,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2022-11-20 12:20:39,023 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 12:20:39,024 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:20:39,281 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 12:20:39,284 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Ended with exit code 0 [2022-11-20 12:20:39,284 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 12:20:39,284 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 12:20:39,284 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 12:20:39,284 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 12:20:39,284 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 12:20:39,284 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:39,285 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 12:20:39,285 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 12:20:39,285 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration4_Loop [2022-11-20 12:20:39,285 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 12:20:39,285 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 12:20:39,286 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:39,305 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:39,317 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:39,319 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:39,322 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:39,386 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 12:20:39,386 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 12:20:39,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:39,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:39,387 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:39,396 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 [2022-11-20 12:20:39,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2022-11-20 12:20:39,410 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:20:39,410 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:20:39,410 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:20:39,410 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:20:39,410 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:20:39,412 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:20:39,412 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:20:39,422 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 12:20:39,426 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-20 12:20:39,426 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-20 12:20:39,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:39,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:39,431 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:39,439 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 12:20:39,439 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 12:20:39,439 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 12:20:39,439 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(p_~n) = 1*p_~n Supporting invariants [] [2022-11-20 12:20:39,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2022-11-20 12:20:39,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:39,444 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 12:20:39,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:39,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:39,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:20:39,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:20:39,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:39,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:20:39,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:20:39,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:20:39,602 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2022-11-20 12:20:39,602 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 32 states and 39 transitions. cyclomatic complexity: 12 Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:39,630 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 32 states and 39 transitions. cyclomatic complexity: 12. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 45 states and 54 transitions. Complement of second has 13 states. [2022-11-20 12:20:39,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2022-11-20 12:20:39,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:39,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2022-11-20 12:20:39,632 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 13 letters. Loop has 4 letters. [2022-11-20 12:20:39,632 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:20:39,632 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-20 12:20:39,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:39,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:39,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:20:39,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:20:39,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:39,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:20:39,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:20:39,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:20:39,762 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 4 loop predicates [2022-11-20 12:20:39,762 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 32 states and 39 transitions. cyclomatic complexity: 12 Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:39,805 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 32 states and 39 transitions. cyclomatic complexity: 12. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 45 states and 54 transitions. Complement of second has 13 states. [2022-11-20 12:20:39,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2022-11-20 12:20:39,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:39,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2022-11-20 12:20:39,809 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 13 letters. Loop has 4 letters. [2022-11-20 12:20:39,809 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:20:39,809 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-20 12:20:39,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:39,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:39,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:20:39,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:20:39,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:39,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:20:39,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:20:39,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:20:39,953 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 4 loop predicates [2022-11-20 12:20:39,953 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 32 states and 39 transitions. cyclomatic complexity: 12 Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:39,979 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 32 states and 39 transitions. cyclomatic complexity: 12. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 56 states and 68 transitions. Complement of second has 15 states. [2022-11-20 12:20:39,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2022-11-20 12:20:39,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:39,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 17 transitions. [2022-11-20 12:20:39,981 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 13 letters. Loop has 4 letters. [2022-11-20 12:20:39,982 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:20:39,982 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 17 letters. Loop has 4 letters. [2022-11-20 12:20:39,982 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:20:39,982 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 13 letters. Loop has 8 letters. [2022-11-20 12:20:39,983 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:20:39,983 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 56 states and 68 transitions. [2022-11-20 12:20:39,985 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-11-20 12:20:39,988 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 56 states to 39 states and 47 transitions. [2022-11-20 12:20:39,988 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2022-11-20 12:20:39,988 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2022-11-20 12:20:39,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 47 transitions. [2022-11-20 12:20:39,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 12:20:39,989 INFO L218 hiAutomatonCegarLoop]: Abstraction has 39 states and 47 transitions. [2022-11-20 12:20:39,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 47 transitions. [2022-11-20 12:20:39,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 24. [2022-11-20 12:20:39,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 17 states have internal predecessors, (23), 5 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:39,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2022-11-20 12:20:39,994 INFO L240 hiAutomatonCegarLoop]: Abstraction has 24 states and 29 transitions. [2022-11-20 12:20:39,994 INFO L428 stractBuchiCegarLoop]: Abstraction has 24 states and 29 transitions. [2022-11-20 12:20:39,995 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-20 12:20:39,995 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 29 transitions. [2022-11-20 12:20:39,995 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-11-20 12:20:39,995 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 12:20:39,995 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 12:20:39,997 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:20:39,997 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1] [2022-11-20 12:20:39,997 INFO L748 eck$LassoCheckResult]: Stem: 767#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 768#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_#t~ret5#1, main_~m~0#1, main_~n~0#1, main_~r~0#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~n~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1;main_~r~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 769#L28 assume (main_~m~0#1 >= 0 && main_~n~0#1 >= 0) && main_~r~0#1 >= 0; 761#L29 call main_#t~ret5#1 := p(main_~m~0#1, main_~n~0#1, main_~r~0#1);< 772#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 760#L13 assume ~r > 0; 758#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 770#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 757#L13 assume !(~r > 0); 759#L16 [2022-11-20 12:20:39,997 INFO L750 eck$LassoCheckResult]: Loop: 759#L16 assume ~n > 0; 763#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 776#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 775#L13 assume ~r > 0; 762#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 773#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 774#L13 assume !(~r > 0); 759#L16 [2022-11-20 12:20:39,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:39,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1283297937, now seen corresponding path program 1 times [2022-11-20 12:20:39,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:39,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740529762] [2022-11-20 12:20:39,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:39,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:40,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:20:40,018 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:20:40,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:20:40,028 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:20:40,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:40,028 INFO L85 PathProgramCache]: Analyzing trace with hash 2028029801, now seen corresponding path program 1 times [2022-11-20 12:20:40,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:40,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360318346] [2022-11-20 12:20:40,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:40,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:40,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:20:40,037 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:20:40,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:20:40,046 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:20:40,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:40,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1308917189, now seen corresponding path program 4 times [2022-11-20 12:20:40,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:40,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232845136] [2022-11-20 12:20:40,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:40,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:40,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:20:40,066 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:20:40,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:20:40,083 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:20:40,343 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 12:20:40,343 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 12:20:40,343 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 12:20:40,343 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 12:20:40,343 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 12:20:40,343 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:40,343 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 12:20:40,343 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 12:20:40,343 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration5_Loop [2022-11-20 12:20:40,344 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 12:20:40,344 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 12:20:40,345 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:40,347 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:40,350 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:40,352 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:40,463 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 12:20:40,463 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 12:20:40,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:40,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:40,467 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:40,471 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:20:40,471 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:20:40,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2022-11-20 12:20:40,495 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 12:20:40,495 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#res=0} Honda state: {p_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 12:20:40,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:40,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:40,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:40,501 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:40,508 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:20:40,508 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:20:40,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2022-11-20 12:20:40,531 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 12:20:40,531 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#t~ret1=0} Honda state: {p_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 12:20:40,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:40,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:40,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:40,536 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:40,540 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:20:40,540 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:20:40,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2022-11-20 12:20:40,575 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 12:20:40,575 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#t~ret0=0} Honda state: {p_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 12:20:40,577 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Ended with exit code 0 [2022-11-20 12:20:40,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:40,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:40,579 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:40,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2022-11-20 12:20:40,581 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:20:40,582 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:20:40,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:40,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:40,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:40,629 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:40,632 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 12:20:40,632 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:20:40,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2022-11-20 12:20:43,751 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 12:20:43,755 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Ended with exit code 0 [2022-11-20 12:20:43,756 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 12:20:43,756 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 12:20:43,756 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 12:20:43,756 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 12:20:43,756 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 12:20:43,756 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:43,756 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 12:20:43,756 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 12:20:43,756 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration5_Loop [2022-11-20 12:20:43,756 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 12:20:43,757 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 12:20:43,758 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:43,766 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:43,769 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:43,773 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:43,893 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 12:20:43,893 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 12:20:43,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:43,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:43,895 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:43,903 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 [2022-11-20 12:20:43,916 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:20:43,916 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:20:43,916 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:20:43,916 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:20:43,916 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:20:43,917 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:20:43,917 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:20:43,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2022-11-20 12:20:43,926 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:20:43,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:43,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:43,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:43,931 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:43,939 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 [2022-11-20 12:20:43,951 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:20:43,951 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:20:43,952 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:20:43,952 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:20:43,952 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:20:43,952 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:20:43,952 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:20:43,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2022-11-20 12:20:43,962 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:20:43,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:43,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:43,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:43,969 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:43,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2022-11-20 12:20:43,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:43,992 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 12:20:44,004 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:20:44,004 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:20:44,004 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:20:44,004 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:20:44,004 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:20:44,005 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:20:44,005 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:20:44,018 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:20:44,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:44,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:44,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:44,063 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:44,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2022-11-20 12:20:44,111 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 [2022-11-20 12:20:44,124 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:20:44,124 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:20:44,124 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:20:44,124 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:20:44,124 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:20:44,127 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:20:44,127 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:20:44,137 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:20:44,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:44,141 INFO L490 LassoAnalysis]: Using template '2-nested'. [2022-11-20 12:20:44,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:44,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:44,142 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:44,147 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 [2022-11-20 12:20:44,159 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:20:44,160 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:20:44,160 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:20:44,160 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:20:44,160 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-11-20 12:20:44,161 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2022-11-20 12:20:44,161 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:20:44,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2022-11-20 12:20:44,186 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:20:44,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:44,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:44,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:44,191 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:44,199 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 [2022-11-20 12:20:44,211 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:20:44,211 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:20:44,212 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:20:44,212 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:20:44,212 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-11-20 12:20:44,213 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2022-11-20 12:20:44,213 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:20:44,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2022-11-20 12:20:44,234 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:20:44,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:44,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:44,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:44,239 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:44,244 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 [2022-11-20 12:20:44,257 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:20:44,257 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:20:44,257 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:20:44,257 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:20:44,257 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-11-20 12:20:44,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2022-11-20 12:20:44,259 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2022-11-20 12:20:44,259 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:20:44,274 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:20:44,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:44,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:44,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:44,280 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:44,283 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 [2022-11-20 12:20:44,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2022-11-20 12:20:44,297 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:20:44,297 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:20:44,298 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:20:44,298 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:20:44,298 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-11-20 12:20:44,301 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2022-11-20 12:20:44,302 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:20:44,321 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 12:20:44,328 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2022-11-20 12:20:44,328 INFO L444 ModelExtractionUtils]: 10 out of 15 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-20 12:20:44,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:44,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:44,330 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:44,335 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 12:20:44,335 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 12:20:44,335 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 12:20:44,336 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*p_~m + 1*p_~r f1 = 1*p_~m Supporting invariants [] [2022-11-20 12:20:44,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2022-11-20 12:20:44,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:44,341 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 12:20:44,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:44,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:20:44,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:20:44,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:44,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 12:20:44,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:20:44,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:20:44,787 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2022-11-20 12:20:44,788 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 29 transitions. cyclomatic complexity: 8 Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 3 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:45,095 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 29 transitions. cyclomatic complexity: 8. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 3 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 92 states and 110 transitions. Complement of second has 26 states. [2022-11-20 12:20:45,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 1 stem states 6 non-accepting loop states 1 accepting loop states [2022-11-20 12:20:45,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 3 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:45,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 19 transitions. [2022-11-20 12:20:45,097 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 19 transitions. Stem has 9 letters. Loop has 7 letters. [2022-11-20 12:20:45,097 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:20:45,097 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 19 transitions. Stem has 16 letters. Loop has 7 letters. [2022-11-20 12:20:45,097 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:20:45,098 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 19 transitions. Stem has 9 letters. Loop has 14 letters. [2022-11-20 12:20:45,098 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:20:45,098 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 92 states and 110 transitions. [2022-11-20 12:20:45,099 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2022-11-20 12:20:45,101 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 92 states to 77 states and 93 transitions. [2022-11-20 12:20:45,101 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2022-11-20 12:20:45,101 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2022-11-20 12:20:45,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 93 transitions. [2022-11-20 12:20:45,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 12:20:45,102 INFO L218 hiAutomatonCegarLoop]: Abstraction has 77 states and 93 transitions. [2022-11-20 12:20:45,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states and 93 transitions. [2022-11-20 12:20:45,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 52. [2022-11-20 12:20:45,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 36 states have internal predecessors, (48), 13 states have call successors, (16), 15 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:45,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2022-11-20 12:20:45,107 INFO L240 hiAutomatonCegarLoop]: Abstraction has 52 states and 64 transitions. [2022-11-20 12:20:45,107 INFO L428 stractBuchiCegarLoop]: Abstraction has 52 states and 64 transitions. [2022-11-20 12:20:45,107 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-11-20 12:20:45,107 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 52 states and 64 transitions. [2022-11-20 12:20:45,108 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2022-11-20 12:20:45,108 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 12:20:45,108 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 12:20:45,108 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:20:45,109 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-20 12:20:45,109 INFO L748 eck$LassoCheckResult]: Stem: 989#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 990#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_#t~ret5#1, main_~m~0#1, main_~n~0#1, main_~r~0#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~n~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1;main_~r~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 991#L28 assume (main_~m~0#1 >= 0 && main_~n~0#1 >= 0) && main_~r~0#1 >= 0; 982#L29 call main_#t~ret5#1 := p(main_~m~0#1, main_~n~0#1, main_~r~0#1);< 997#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1019#L13 assume ~r > 0; 993#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 992#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 994#L13 assume !(~r > 0); 999#L16 assume ~n > 0; 988#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 1008#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1000#L13 assume ~r > 0; 977#L14 [2022-11-20 12:20:45,109 INFO L750 eck$LassoCheckResult]: Loop: 977#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 998#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 976#L13 assume ~r > 0; 977#L14 [2022-11-20 12:20:45,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:45,109 INFO L85 PathProgramCache]: Analyzing trace with hash 681879976, now seen corresponding path program 5 times [2022-11-20 12:20:45,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:45,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482094729] [2022-11-20 12:20:45,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:45,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:45,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:20:45,117 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:20:45,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:20:45,123 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:20:45,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:45,124 INFO L85 PathProgramCache]: Analyzing trace with hash 57663, now seen corresponding path program 3 times [2022-11-20 12:20:45,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:45,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853954152] [2022-11-20 12:20:45,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:45,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:45,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:20:45,128 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:20:45,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:20:45,131 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:20:45,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:45,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1308917192, now seen corresponding path program 6 times [2022-11-20 12:20:45,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:45,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332059653] [2022-11-20 12:20:45,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:45,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:45,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:20:45,140 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:20:45,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:20:45,147 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:20:45,247 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 12:20:45,248 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 12:20:45,248 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 12:20:45,248 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 12:20:45,248 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 12:20:45,248 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:45,248 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 12:20:45,248 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 12:20:45,248 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration6_Loop [2022-11-20 12:20:45,249 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 12:20:45,249 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 12:20:45,250 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:45,252 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:45,254 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:45,260 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:45,270 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:45,332 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 12:20:45,332 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 12:20:45,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:45,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:45,334 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:45,340 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:20:45,340 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:20:45,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2022-11-20 12:20:45,363 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 12:20:45,363 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#res=0} Honda state: {p_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 12:20:45,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:45,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:45,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:45,369 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:45,373 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:20:45,373 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:20:45,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2022-11-20 12:20:45,403 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 12:20:45,403 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#t~ret1=0} Honda state: {p_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 12:20:45,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:45,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:45,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:45,408 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:45,412 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:20:45,412 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:20:45,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2022-11-20 12:20:45,439 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 12:20:45,439 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#in~m=6, p_~m=6} Honda state: {p_#in~m=6, p_~m=6} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 12:20:45,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:45,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:45,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:45,445 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:45,450 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:20:45,450 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:20:45,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2022-11-20 12:20:45,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:45,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:45,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:45,490 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:45,532 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 12:20:45,533 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:20:45,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Waiting until timeout for monitored process [2022-11-20 12:20:45,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:57,673 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2022-11-20 12:20:57,681 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Ended with exit code 0 [2022-11-20 12:20:57,681 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 12:20:57,682 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 12:20:57,682 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 12:20:57,682 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 12:20:57,682 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 12:20:57,682 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:57,682 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 12:20:57,682 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 12:20:57,682 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration6_Loop [2022-11-20 12:20:57,682 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 12:20:57,682 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 12:20:57,684 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:57,700 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:57,702 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:57,714 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:57,719 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:57,786 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 12:20:57,787 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 12:20:57,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:57,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:57,788 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:57,799 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 [2022-11-20 12:20:57,812 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:20:57,812 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:20:57,812 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:20:57,812 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:20:57,812 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:20:57,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Waiting until timeout for monitored process [2022-11-20 12:20:57,813 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:20:57,813 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:20:57,826 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:20:57,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:57,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:57,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:57,831 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:57,835 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 [2022-11-20 12:20:57,847 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:20:57,847 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:20:57,848 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:20:57,848 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:20:57,848 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:20:57,848 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:20:57,848 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:20:57,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Waiting until timeout for monitored process [2022-11-20 12:20:57,862 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:20:57,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:57,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:57,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:57,867 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:57,871 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 [2022-11-20 12:20:57,884 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:20:57,884 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:20:57,884 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:20:57,884 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:20:57,884 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:20:57,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Waiting until timeout for monitored process [2022-11-20 12:20:57,886 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:20:57,887 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:20:57,902 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:20:57,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:57,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:57,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:57,907 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:57,911 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 [2022-11-20 12:20:57,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Waiting until timeout for monitored process [2022-11-20 12:20:57,924 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:20:57,924 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:20:57,925 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:20:57,925 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:20:57,925 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:20:57,926 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:20:57,926 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:20:57,954 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:20:57,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:57,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:57,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:57,959 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:57,963 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 [2022-11-20 12:20:57,975 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:20:57,975 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:20:57,975 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:20:57,976 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:20:57,976 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:20:57,976 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:20:57,976 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:20:57,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Waiting until timeout for monitored process [2022-11-20 12:20:57,990 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:20:57,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:57,994 INFO L490 LassoAnalysis]: Using template '2-nested'. [2022-11-20 12:20:57,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:57,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:57,995 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:57,999 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 [2022-11-20 12:20:58,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Waiting until timeout for monitored process [2022-11-20 12:20:58,010 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:20:58,010 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:20:58,010 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:20:58,010 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:20:58,010 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-11-20 12:20:58,011 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2022-11-20 12:20:58,011 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:20:58,022 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:20:58,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:58,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:58,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:58,027 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:58,031 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 [2022-11-20 12:20:58,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Waiting until timeout for monitored process [2022-11-20 12:20:58,043 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:20:58,043 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:20:58,043 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:20:58,044 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:20:58,044 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-11-20 12:20:58,044 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2022-11-20 12:20:58,044 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:20:58,058 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:20:58,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:58,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:58,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:58,065 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:58,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Waiting until timeout for monitored process [2022-11-20 12:20:58,068 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 [2022-11-20 12:20:58,081 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:20:58,081 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:20:58,081 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:20:58,082 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:20:58,082 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-11-20 12:20:58,084 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2022-11-20 12:20:58,084 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:20:58,095 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 12:20:58,103 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2022-11-20 12:20:58,103 INFO L444 ModelExtractionUtils]: 5 out of 11 variables were initially zero. Simplification set additionally 2 variables to zero. [2022-11-20 12:20:58,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:58,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:58,107 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:58,113 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 12:20:58,114 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 12:20:58,114 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 12:20:58,114 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*p_~n + 1*p_~r f1 = 1*p_~n Supporting invariants [] [2022-11-20 12:20:58,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Waiting until timeout for monitored process [2022-11-20 12:20:58,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:58,119 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 12:20:58,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:58,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:58,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:20:58,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:20:58,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:58,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 12:20:58,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:20:58,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:20:58,388 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-11-20 12:20:58,388 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 52 states and 64 transitions. cyclomatic complexity: 19 Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:58,491 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 52 states and 64 transitions. cyclomatic complexity: 19. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 83 states and 105 transitions. Complement of second has 9 states. [2022-11-20 12:20:58,494 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 [2022-11-20 12:20:58,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:58,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2022-11-20 12:20:58,495 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 13 letters. Loop has 3 letters. [2022-11-20 12:20:58,496 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:20:58,496 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-20 12:20:58,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:58,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:58,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:20:58,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:20:58,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:58,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 12:20:58,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:20:58,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:20:58,740 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2022-11-20 12:20:58,740 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 52 states and 64 transitions. cyclomatic complexity: 19 Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:58,839 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 52 states and 64 transitions. cyclomatic complexity: 19. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 83 states and 105 transitions. Complement of second has 9 states. [2022-11-20 12:20:58,841 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 [2022-11-20 12:20:58,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:58,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2022-11-20 12:20:58,842 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 13 letters. Loop has 3 letters. [2022-11-20 12:20:58,842 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:20:58,843 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-20 12:20:58,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:58,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:58,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:20:58,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:20:58,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:58,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 12:20:58,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:20:59,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:59,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:20:59,118 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 3 loop predicates [2022-11-20 12:20:59,118 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 52 states and 64 transitions. cyclomatic complexity: 19 Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:59,217 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 52 states and 64 transitions. cyclomatic complexity: 19. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 88 states and 114 transitions. Complement of second has 8 states. [2022-11-20 12:20:59,219 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 [2022-11-20 12:20:59,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:59,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2022-11-20 12:20:59,220 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 13 letters. Loop has 3 letters. [2022-11-20 12:20:59,220 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:20:59,220 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 16 letters. Loop has 3 letters. [2022-11-20 12:20:59,220 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:20:59,220 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 13 letters. Loop has 6 letters. [2022-11-20 12:20:59,221 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:20:59,221 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 88 states and 114 transitions. [2022-11-20 12:20:59,222 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2022-11-20 12:20:59,223 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 88 states to 62 states and 78 transitions. [2022-11-20 12:20:59,223 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2022-11-20 12:20:59,223 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2022-11-20 12:20:59,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 78 transitions. [2022-11-20 12:20:59,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 12:20:59,224 INFO L218 hiAutomatonCegarLoop]: Abstraction has 62 states and 78 transitions. [2022-11-20 12:20:59,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states and 78 transitions. [2022-11-20 12:20:59,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 41. [2022-11-20 12:20:59,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 29 states have internal predecessors, (37), 10 states have call successors, (14), 11 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:59,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2022-11-20 12:20:59,227 INFO L240 hiAutomatonCegarLoop]: Abstraction has 41 states and 51 transitions. [2022-11-20 12:20:59,227 INFO L428 stractBuchiCegarLoop]: Abstraction has 41 states and 51 transitions. [2022-11-20 12:20:59,227 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-11-20 12:20:59,227 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 51 transitions. [2022-11-20 12:20:59,228 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2022-11-20 12:20:59,228 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 12:20:59,228 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 12:20:59,228 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-20 12:20:59,228 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1] [2022-11-20 12:20:59,229 INFO L748 eck$LassoCheckResult]: Stem: 1490#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1491#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_#t~ret5#1, main_~m~0#1, main_~n~0#1, main_~r~0#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~n~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1;main_~r~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 1492#L28 assume (main_~m~0#1 >= 0 && main_~n~0#1 >= 0) && main_~r~0#1 >= 0; 1480#L29 call main_#t~ret5#1 := p(main_~m~0#1, main_~n~0#1, main_~r~0#1);< 1493#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1479#L13 assume !(~r > 0); 1481#L16 assume ~n > 0; 1485#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 1519#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1512#L13 assume !(~r > 0); 1486#L16 assume ~n > 0; 1487#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 1516#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1517#L13 assume ~r > 0; 1503#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 1498#pENTRY [2022-11-20 12:20:59,229 INFO L750 eck$LassoCheckResult]: Loop: 1498#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1506#L13 assume !(~r > 0); 1505#L16 assume ~n > 0; 1496#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 1502#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1500#L13 assume ~r > 0; 1495#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 1498#pENTRY [2022-11-20 12:20:59,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:59,229 INFO L85 PathProgramCache]: Analyzing trace with hash 708644913, now seen corresponding path program 7 times [2022-11-20 12:20:59,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:59,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729131826] [2022-11-20 12:20:59,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:59,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:59,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:59,307 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:20:59,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:20:59,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729131826] [2022-11-20 12:20:59,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729131826] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:20:59,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387976264] [2022-11-20 12:20:59,307 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 12:20:59,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:20:59,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:59,314 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:20:59,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-11-20 12:20:59,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:59,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:20:59,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:20:59,370 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:20:59,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:20:59,401 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:20:59,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387976264] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:20:59,401 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:20:59,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2022-11-20 12:20:59,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342732130] [2022-11-20 12:20:59,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:20:59,405 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-20 12:20:59,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:59,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1923820573, now seen corresponding path program 2 times [2022-11-20 12:20:59,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:59,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102039890] [2022-11-20 12:20:59,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:59,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:59,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:20:59,410 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:20:59,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:20:59,414 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:20:59,564 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 12:20:59,564 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 12:20:59,565 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 12:20:59,565 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 12:20:59,565 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 12:20:59,565 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:59,565 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 12:20:59,565 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 12:20:59,565 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration7_Loop [2022-11-20 12:20:59,565 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 12:20:59,565 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 12:20:59,566 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:59,568 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:59,579 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:59,581 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:59,583 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:59,585 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:59,587 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:59,635 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 12:20:59,635 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 12:20:59,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:59,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:59,637 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:59,647 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:20:59,648 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:20:59,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Waiting until timeout for monitored process [2022-11-20 12:20:59,670 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 12:20:59,670 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_~n=0} Honda state: {p_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 12:20:59,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:59,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:59,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:59,675 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:59,679 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:20:59,679 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:20:59,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Waiting until timeout for monitored process [2022-11-20 12:20:59,702 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Ended with exit code 0 [2022-11-20 12:20:59,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:59,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:59,703 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:59,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Waiting until timeout for monitored process [2022-11-20 12:20:59,706 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 12:20:59,706 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:20:59,808 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 12:20:59,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:59,812 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 12:20:59,812 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 12:20:59,812 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 12:20:59,812 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 12:20:59,812 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 12:20:59,812 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:59,812 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 12:20:59,812 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 12:20:59,812 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration7_Loop [2022-11-20 12:20:59,812 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 12:20:59,812 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 12:20:59,813 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:59,815 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:59,827 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:59,829 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:59,834 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:59,836 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:59,838 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:20:59,891 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 12:20:59,891 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 12:20:59,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:59,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:59,900 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:59,907 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 [2022-11-20 12:20:59,919 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:20:59,920 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:20:59,920 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:20:59,920 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:20:59,920 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:20:59,921 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:20:59,921 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:20:59,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (84)] Waiting until timeout for monitored process [2022-11-20 12:20:59,926 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:20:59,929 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (84)] Ended with exit code 0 [2022-11-20 12:20:59,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:59,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:59,930 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:59,937 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 [2022-11-20 12:20:59,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (85)] Waiting until timeout for monitored process [2022-11-20 12:20:59,947 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:20:59,948 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:20:59,948 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:20:59,948 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:20:59,948 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:20:59,950 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:20:59,950 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:20:59,958 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 12:20:59,963 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2022-11-20 12:20:59,963 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 2 variables to zero. [2022-11-20 12:20:59,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:20:59,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:59,964 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:59,968 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 12:20:59,968 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 12:20:59,968 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 12:20:59,968 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(p_#in~m) = 1*p_#in~m Supporting invariants [] [2022-11-20 12:20:59,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (86)] Waiting until timeout for monitored process [2022-11-20 12:20:59,972 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (85)] Ended with exit code 0 [2022-11-20 12:20:59,972 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 12:20:59,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:21:00,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:21:00,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:21:00,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:21:00,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:21:00,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 12:21:00,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:21:00,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:21:00,176 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 6 loop predicates [2022-11-20 12:21:00,176 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 41 states and 51 transitions. cyclomatic complexity: 14 Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:21:00,281 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 41 states and 51 transitions. cyclomatic complexity: 14. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 175 states and 224 transitions. Complement of second has 25 states. [2022-11-20 12:21:00,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2022-11-20 12:21:00,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:21:00,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 22 transitions. [2022-11-20 12:21:00,284 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 22 transitions. Stem has 15 letters. Loop has 7 letters. [2022-11-20 12:21:00,285 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:21:00,285 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-20 12:21:00,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:21:00,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:21:00,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:21:00,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:21:00,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:21:00,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 12:21:00,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:21:00,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:21:00,460 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 6 loop predicates [2022-11-20 12:21:00,460 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 41 states and 51 transitions. cyclomatic complexity: 14 Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:21:00,582 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 41 states and 51 transitions. cyclomatic complexity: 14. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 194 states and 254 transitions. Complement of second has 30 states. [2022-11-20 12:21:00,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 1 stem states 6 non-accepting loop states 1 accepting loop states [2022-11-20 12:21:00,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:21:00,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 23 transitions. [2022-11-20 12:21:00,584 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 23 transitions. Stem has 15 letters. Loop has 7 letters. [2022-11-20 12:21:00,585 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:21:00,585 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 23 transitions. Stem has 22 letters. Loop has 7 letters. [2022-11-20 12:21:00,585 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:21:00,585 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 23 transitions. Stem has 15 letters. Loop has 14 letters. [2022-11-20 12:21:00,585 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:21:00,585 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 194 states and 254 transitions. [2022-11-20 12:21:00,588 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2022-11-20 12:21:00,590 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 194 states to 187 states and 243 transitions. [2022-11-20 12:21:00,591 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2022-11-20 12:21:00,591 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2022-11-20 12:21:00,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 187 states and 243 transitions. [2022-11-20 12:21:00,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 12:21:00,592 INFO L218 hiAutomatonCegarLoop]: Abstraction has 187 states and 243 transitions. [2022-11-20 12:21:00,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states and 243 transitions. [2022-11-20 12:21:00,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 105. [2022-11-20 12:21:00,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 77 states have (on average 1.2597402597402598) internal successors, (97), 67 states have internal predecessors, (97), 28 states have call successors, (43), 37 states have call predecessors, (43), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:21:00,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 140 transitions. [2022-11-20 12:21:00,600 INFO L240 hiAutomatonCegarLoop]: Abstraction has 105 states and 140 transitions. [2022-11-20 12:21:00,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:21:00,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:21:00,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:21:00,604 INFO L87 Difference]: Start difference. First operand 105 states and 140 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:21:00,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:21:00,661 INFO L93 Difference]: Finished difference Result 109 states and 126 transitions. [2022-11-20 12:21:00,661 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 109 states and 126 transitions. [2022-11-20 12:21:00,663 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-20 12:21:00,663 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 109 states to 0 states and 0 transitions. [2022-11-20 12:21:00,663 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-20 12:21:00,663 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-20 12:21:00,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-20 12:21:00,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:21:00,663 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 12:21:00,664 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 12:21:00,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:21:00,670 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 12:21:00,671 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2022-11-20 12:21:00,671 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-11-20 12:21:00,671 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-20 12:21:00,671 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-11-20 12:21:00,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 12:21:00 BoogieIcfgContainer [2022-11-20 12:21:00,678 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-20 12:21:00,679 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 12:21:00,679 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 12:21:00,679 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 12:21:00,680 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:20:21" (3/4) ... [2022-11-20 12:21:00,682 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 12:21:00,683 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 12:21:00,683 INFO L158 Benchmark]: Toolchain (without parser) took 40123.42ms. Allocated memory was 161.5MB in the beginning and 209.7MB in the end (delta: 48.2MB). Free memory was 131.4MB in the beginning and 66.2MB in the end (delta: 65.2MB). Peak memory consumption was 115.4MB. Max. memory is 16.1GB. [2022-11-20 12:21:00,683 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 117.4MB. Free memory is still 70.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:21:00,684 INFO L158 Benchmark]: CACSL2BoogieTranslator took 203.33ms. Allocated memory is still 161.5MB. Free memory was 131.2MB in the beginning and 121.9MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 12:21:00,684 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.37ms. Allocated memory is still 161.5MB. Free memory was 121.9MB in the beginning and 120.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:21:00,684 INFO L158 Benchmark]: Boogie Preprocessor took 18.00ms. Allocated memory is still 161.5MB. Free memory was 120.7MB in the beginning and 119.8MB in the end (delta: 954.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:21:00,685 INFO L158 Benchmark]: RCFGBuilder took 305.66ms. Allocated memory is still 161.5MB. Free memory was 119.8MB in the beginning and 110.5MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-20 12:21:00,685 INFO L158 Benchmark]: BuchiAutomizer took 39553.89ms. Allocated memory was 161.5MB in the beginning and 209.7MB in the end (delta: 48.2MB). Free memory was 110.3MB in the beginning and 66.2MB in the end (delta: 44.1MB). Peak memory consumption was 94.4MB. Max. memory is 16.1GB. [2022-11-20 12:21:00,685 INFO L158 Benchmark]: Witness Printer took 3.98ms. Allocated memory is still 209.7MB. Free memory is still 66.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:21:00,687 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 70.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 203.33ms. Allocated memory is still 161.5MB. Free memory was 131.2MB in the beginning and 121.9MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.37ms. Allocated memory is still 161.5MB. Free memory was 121.9MB in the beginning and 120.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 18.00ms. Allocated memory is still 161.5MB. Free memory was 120.7MB in the beginning and 119.8MB in the end (delta: 954.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 305.66ms. Allocated memory is still 161.5MB. Free memory was 119.8MB in the beginning and 110.5MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 39553.89ms. Allocated memory was 161.5MB in the beginning and 209.7MB in the end (delta: 48.2MB). Free memory was 110.3MB in the beginning and 66.2MB in the end (delta: 44.1MB). Peak memory consumption was 94.4MB. Max. memory is 16.1GB. * Witness Printer took 3.98ms. Allocated memory is still 209.7MB. Free memory is still 66.2MB. There was no memory consumed. 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 8 terminating modules (1 trivial, 5 deterministic, 2 nondeterministic). One deterministic module has 2-nested ranking function (if \old(r) + \old(n) > 0 then 1 else 0), (if \old(r) + \old(n) > 0 then \old(r) + \old(n) else \old(r)) and consists of 4 locations. One deterministic module has affine ranking function n and consists of 5 locations. One deterministic module has 2-nested ranking function (if n + r > 0 then 1 else 0), (if n + r > 0 then n + r else n) and consists of 4 locations. One deterministic module has 2-nested ranking function (if m + r > 0 then 1 else 0), (if m + r > 0 then m + r else m) and consists of 8 locations. One deterministic module has affine ranking function \old(m) and consists of 8 locations. One nondeterministic module has affine ranking function n and consists of 5 locations. One nondeterministic module has 2-nested ranking function (if n + r > 0 then 1 else 0), (if n + r > 0 then n + r else n) and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 39.4s and 8 iterations. TraceHistogramMax:3. Analysis of lassos took 34.9s. Construction of modules took 0.2s. Büchi inclusion checks took 4.0s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 7. Automata minimization 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 157 StatesRemovedByMinimization, 7 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 [4, 1, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/4 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 198 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 186 mSDsluCounter, 254 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 80 mSDsCounter, 52 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 263 IncrementalHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 52 mSolverCounterUnsat, 174 mSDtfsCounter, 263 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT6 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital26 mio100 ax100 hnf100 lsp79 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq183 hnf89 smp98 dnf100 smp100 tf106 neg98 sie105 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 24ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 3 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 17 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 2 LassoNonterminationAnalysisTime: 29.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-11-20 12:21:00,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (86)] Forceful destruction successful, exit code 0 [2022-11-20 12:21:00,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2022-11-20 12:21:01,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f872e4d-38c9-41b2-83a1-9e523b0ef7e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE