./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-numeric/Binomial.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-numeric/Binomial.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c204b56aba09d3ce87e17edffdff1d33aa0b4dc87a1e1140339548dffa982588 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:14:57,028 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:14:57,031 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:14:57,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:14:57,070 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:14:57,072 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:14:57,074 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:14:57,076 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:14:57,078 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:14:57,080 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:14:57,081 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:14:57,082 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:14:57,083 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:14:57,084 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:14:57,086 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:14:57,087 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:14:57,088 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:14:57,090 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:14:57,092 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:14:57,095 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:14:57,097 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:14:57,099 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:14:57,101 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:14:57,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:14:57,107 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:14:57,108 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:14:57,108 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:14:57,109 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:14:57,110 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:14:57,111 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:14:57,112 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:14:57,113 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:14:57,114 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:14:57,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:14:57,116 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:14:57,117 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:14:57,118 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:14:57,118 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:14:57,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:14:57,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:14:57,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:14:57,122 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-10-17 10:14:57,154 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:14:57,155 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:14:57,155 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:14:57,155 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:14:57,156 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:14:57,156 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:14:57,160 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:14:57,160 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-10-17 10:14:57,161 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-10-17 10:14:57,161 INFO L138 SettingsManager]: * Use old map elimination=false [2022-10-17 10:14:57,161 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-10-17 10:14:57,161 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-10-17 10:14:57,162 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-10-17 10:14:57,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:14:57,162 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 10:14:57,162 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:14:57,163 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:14:57,163 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-10-17 10:14:57,163 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-10-17 10:14:57,163 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-10-17 10:14:57,164 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:14:57,165 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-10-17 10:14:57,165 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:14:57,165 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-10-17 10:14:57,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:14:57,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:14:57,168 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:14:57,168 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:14:57,169 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-10-17 10:14:57,169 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_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c204b56aba09d3ce87e17edffdff1d33aa0b4dc87a1e1140339548dffa982588 [2022-10-17 10:14:57,444 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:14:57,477 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:14:57,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:14:57,482 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:14:57,483 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:14:57,484 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/termination-numeric/Binomial.c [2022-10-17 10:14:57,542 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/data/4436193a4/d3ce818e25194ae785b106491be41fd9/FLAG91fc66853 [2022-10-17 10:14:57,975 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:14:57,976 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/sv-benchmarks/c/termination-numeric/Binomial.c [2022-10-17 10:14:57,982 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/data/4436193a4/d3ce818e25194ae785b106491be41fd9/FLAG91fc66853 [2022-10-17 10:14:58,006 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/data/4436193a4/d3ce818e25194ae785b106491be41fd9 [2022-10-17 10:14:58,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:14:58,018 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:14:58,020 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:14:58,020 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:14:58,023 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:14:58,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:14:58" (1/1) ... [2022-10-17 10:14:58,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@342b6366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:58, skipping insertion in model container [2022-10-17 10:14:58,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:14:58" (1/1) ... [2022-10-17 10:14:58,033 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:14:58,046 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:14:58,190 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:14:58,193 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:14:58,227 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:14:58,239 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:14:58,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:58 WrapperNode [2022-10-17 10:14:58,240 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:14:58,242 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:14:58,242 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:14:58,242 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:14:58,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:58" (1/1) ... [2022-10-17 10:14:58,259 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:58" (1/1) ... [2022-10-17 10:14:58,289 INFO L138 Inliner]: procedures = 6, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 55 [2022-10-17 10:14:58,290 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:14:58,291 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:14:58,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:14:58,292 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:14:58,301 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:58" (1/1) ... [2022-10-17 10:14:58,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:58" (1/1) ... [2022-10-17 10:14:58,305 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:58" (1/1) ... [2022-10-17 10:14:58,306 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:58" (1/1) ... [2022-10-17 10:14:58,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:58" (1/1) ... [2022-10-17 10:14:58,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:58" (1/1) ... [2022-10-17 10:14:58,321 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:58" (1/1) ... [2022-10-17 10:14:58,323 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:58" (1/1) ... [2022-10-17 10:14:58,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:14:58,325 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:14:58,325 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:14:58,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:14:58,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:58" (1/1) ... [2022-10-17 10:14:58,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:14:58,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:14:58,356 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:14:58,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-10-17 10:14:58,413 INFO L130 BoogieDeclarations]: Found specification of procedure fact [2022-10-17 10:14:58,413 INFO L138 BoogieDeclarations]: Found implementation of procedure fact [2022-10-17 10:14:58,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:14:58,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:14:58,471 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:14:58,474 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:14:58,684 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:14:58,692 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:14:58,709 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-17 10:14:58,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:14:58 BoogieIcfgContainer [2022-10-17 10:14:58,711 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:14:58,712 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-10-17 10:14:58,712 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-10-17 10:14:58,717 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-10-17 10:14:58,717 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-10-17 10:14:58,718 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 17.10 10:14:58" (1/3) ... [2022-10-17 10:14:58,719 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4af5ede3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.10 10:14:58, skipping insertion in model container [2022-10-17 10:14:58,719 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-10-17 10:14:58,719 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:58" (2/3) ... [2022-10-17 10:14:58,720 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4af5ede3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.10 10:14:58, skipping insertion in model container [2022-10-17 10:14:58,720 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-10-17 10:14:58,720 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:14:58" (3/3) ... [2022-10-17 10:14:58,721 INFO L332 chiAutomizerObserver]: Analyzing ICFG Binomial.c [2022-10-17 10:14:58,778 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-10-17 10:14:58,779 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-10-17 10:14:58,779 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-10-17 10:14:58,779 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-10-17 10:14:58,779 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-10-17 10:14:58,779 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-10-17 10:14:58,779 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-10-17 10:14:58,780 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-10-17 10:14:58,784 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 28 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 19 states have internal predecessors, (27), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-10-17 10:14:58,809 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 18 [2022-10-17 10:14:58,809 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:14:58,810 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:14:58,815 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-10-17 10:14:58,815 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-10-17 10:14:58,816 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-10-17 10:14:58,816 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 28 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 19 states have internal predecessors, (27), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-10-17 10:14:58,822 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 18 [2022-10-17 10:14:58,822 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:14:58,822 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:14:58,823 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-10-17 10:14:58,823 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-10-17 10:14:58,830 INFO L748 eck$LassoCheckResult]: Stem: 18#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~ret9#1, main_#t~ret10#1, main_#t~post8#1, main_~k~0#1, main_#t~post7#1, main_~n~0#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 17#L35true assume !(main_~x~0#1 < 0);main_~y~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 27#L38true assume !(main_~y~0#1 < 0);main_~z~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~n~0#1 := 0; 13#L41-3true [2022-10-17 10:14:58,830 INFO L750 eck$LassoCheckResult]: Loop: 13#L41-3true assume !!(main_~n~0#1 <= main_~x~0#1);main_~k~0#1 := 0; 22#L42-3true assume !(main_~k~0#1 <= main_~x~0#1); 14#L41-2true main_#t~post7#1 := main_~n~0#1;main_~n~0#1 := 1 + main_#t~post7#1;havoc main_#t~post7#1; 13#L41-3true [2022-10-17 10:14:58,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:58,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1171944, now seen corresponding path program 1 times [2022-10-17 10:14:58,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:58,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056579798] [2022-10-17 10:14:58,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:58,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:58,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:14:58,931 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:14:58,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:14:58,966 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:14:58,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:58,971 INFO L85 PathProgramCache]: Analyzing trace with hash 57812, now seen corresponding path program 1 times [2022-10-17 10:14:58,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:58,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525513226] [2022-10-17 10:14:58,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:58,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:58,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:14:58,994 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:14:58,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:14:59,001 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:14:59,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:59,003 INFO L85 PathProgramCache]: Analyzing trace with hash 553673357, now seen corresponding path program 1 times [2022-10-17 10:14:59,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:59,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300819095] [2022-10-17 10:14:59,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:59,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:59,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:59,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:14:59,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:14:59,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300819095] [2022-10-17 10:14:59,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300819095] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:14:59,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:14:59,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:14:59,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775442767] [2022-10-17 10:14:59,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:14:59,215 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:14:59,216 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:14:59,216 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:14:59,216 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:14:59,217 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-10-17 10:14:59,217 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:14:59,217 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:14:59,217 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:14:59,218 INFO L133 ssoRankerPreferences]: Filename of dumped script: Binomial.c_Iteration1_Loop [2022-10-17 10:14:59,218 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:14:59,218 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:14:59,240 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:14:59,272 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:14:59,336 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:14:59,340 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-10-17 10:14:59,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:14:59,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:14:59,349 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:14:59,378 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:14:59,378 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:14:59,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-10-17 10:14:59,410 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:14:59,410 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post7#1=0} Honda state: {ULTIMATE.start_main_#t~post7#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:14:59,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:14:59,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:14:59,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:14:59,443 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:14:59,450 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:14:59,450 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:14:59,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-10-17 10:14:59,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:14:59,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:14:59,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:14:59,492 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:14:59,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-10-17 10:14:59,511 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-10-17 10:14:59,512 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:14:59,723 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-10-17 10:14:59,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:14:59,726 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:14:59,726 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:14:59,727 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:14:59,727 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:14:59,727 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-10-17 10:14:59,727 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:14:59,727 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:14:59,727 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:14:59,727 INFO L133 ssoRankerPreferences]: Filename of dumped script: Binomial.c_Iteration1_Loop [2022-10-17 10:14:59,727 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:14:59,727 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:14:59,729 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:14:59,740 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:14:59,788 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:14:59,793 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-10-17 10:14:59,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:14:59,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:14:59,796 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:14:59,810 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:14:59,819 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:14:59,819 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:14:59,820 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:14:59,820 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:14:59,820 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:14:59,822 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:14:59,823 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:14:59,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-10-17 10:14:59,841 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:14:59,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-10-17 10:14:59,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:14:59,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:14:59,875 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:14:59,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-10-17 10:14:59,880 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:14:59,887 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:14:59,887 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:14:59,887 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:14:59,887 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:14:59,888 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:14:59,890 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:14:59,890 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:14:59,909 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-10-17 10:14:59,934 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2022-10-17 10:14:59,934 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 2 variables to zero. [2022-10-17 10:14:59,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:14:59,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:14:59,942 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:14:59,948 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-10-17 10:14:59,948 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-10-17 10:14:59,948 INFO L513 LassoAnalysis]: Proved termination. [2022-10-17 10:14:59,949 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0#1) = -1*ULTIMATE.start_main_~n~0#1 Supporting invariants [] [2022-10-17 10:14:59,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-10-17 10:14:59,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-10-17 10:14:59,998 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-10-17 10:15:00,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:00,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:00,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 10:15:00,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:00,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:00,061 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 10:15:00,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:00,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:15:00,168 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 [2022-10-17 10:15:00,170 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 28 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 19 states have internal predecessors, (27), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:00,283 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 28 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 19 states have internal predecessors, (27), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7). Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 73 states and 106 transitions. Complement of second has 11 states. [2022-10-17 10:15:00,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2022-10-17 10:15:00,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:00,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 54 transitions. [2022-10-17 10:15:00,307 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 54 transitions. Stem has 4 letters. Loop has 3 letters. [2022-10-17 10:15:00,308 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:15:00,308 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 54 transitions. Stem has 7 letters. Loop has 3 letters. [2022-10-17 10:15:00,309 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:15:00,309 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 54 transitions. Stem has 4 letters. Loop has 6 letters. [2022-10-17 10:15:00,309 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:15:00,311 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 73 states and 106 transitions. [2022-10-17 10:15:00,320 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 18 [2022-10-17 10:15:00,328 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 73 states to 33 states and 48 transitions. [2022-10-17 10:15:00,329 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2022-10-17 10:15:00,329 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 30 [2022-10-17 10:15:00,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 48 transitions. [2022-10-17 10:15:00,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-10-17 10:15:00,330 INFO L218 hiAutomatonCegarLoop]: Abstraction has 33 states and 48 transitions. [2022-10-17 10:15:00,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states and 48 transitions. [2022-10-17 10:15:00,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2022-10-17 10:15:00,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 21 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-10-17 10:15:00,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 42 transitions. [2022-10-17 10:15:00,359 INFO L240 hiAutomatonCegarLoop]: Abstraction has 30 states and 42 transitions. [2022-10-17 10:15:00,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:15:00,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:15:00,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:15:00,363 INFO L87 Difference]: Start difference. First operand 30 states and 42 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:00,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:00,435 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2022-10-17 10:15:00,435 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 38 transitions. [2022-10-17 10:15:00,441 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 19 [2022-10-17 10:15:00,446 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 28 states and 37 transitions. [2022-10-17 10:15:00,446 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2022-10-17 10:15:00,446 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2022-10-17 10:15:00,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 37 transitions. [2022-10-17 10:15:00,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:15:00,447 INFO L218 hiAutomatonCegarLoop]: Abstraction has 28 states and 37 transitions. [2022-10-17 10:15:00,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 37 transitions. [2022-10-17 10:15:00,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2022-10-17 10:15:00,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 17 states have internal predecessors, (21), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-10-17 10:15:00,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2022-10-17 10:15:00,460 INFO L240 hiAutomatonCegarLoop]: Abstraction has 26 states and 35 transitions. [2022-10-17 10:15:00,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:15:00,462 INFO L428 stractBuchiCegarLoop]: Abstraction has 26 states and 35 transitions. [2022-10-17 10:15:00,462 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-10-17 10:15:00,462 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 35 transitions. [2022-10-17 10:15:00,466 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 19 [2022-10-17 10:15:00,466 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:15:00,466 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:15:00,468 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-10-17 10:15:00,468 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:00,468 INFO L748 eck$LassoCheckResult]: Stem: 241#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 232#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~ret9#1, main_#t~ret10#1, main_#t~post8#1, main_~k~0#1, main_#t~post7#1, main_~n~0#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 233#L35 assume !(main_~x~0#1 < 0);main_~y~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 240#L38 assume !(main_~y~0#1 < 0);main_~z~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~n~0#1 := 0; 236#L41-3 [2022-10-17 10:15:00,469 INFO L750 eck$LassoCheckResult]: Loop: 236#L41-3 assume !!(main_~n~0#1 <= main_~x~0#1);main_~k~0#1 := 0; 237#L42-3 assume !!(main_~k~0#1 <= main_~x~0#1); 242#L43 assume !(main_~k~0#1 <= main_~n~0#1);assume { :begin_inline_binomialCoefficient } true;binomialCoefficient_#in~n#1, binomialCoefficient_#in~k#1 := main_~k~0#1, main_~n~0#1;havoc binomialCoefficient_#res#1;havoc binomialCoefficient_#t~ret1#1, binomialCoefficient_#t~ret2#1, binomialCoefficient_#t~ret3#1, binomialCoefficient_~n#1, binomialCoefficient_~k#1;binomialCoefficient_~n#1 := binomialCoefficient_#in~n#1;binomialCoefficient_~k#1 := binomialCoefficient_#in~k#1; 218#L30-5 call binomialCoefficient_#t~ret1#1 := fact(binomialCoefficient_~n#1);< 219#factENTRY ~n := #in~n; 231#L25 assume ~n <= 0;#res := 1; 230#factFINAL assume true; 220#factEXIT >#74#return; 225#L30-6 call binomialCoefficient_#t~ret2#1 := fact(binomialCoefficient_~k#1);< 219#factENTRY ~n := #in~n; 231#L25 assume ~n <= 0;#res := 1; 230#factFINAL assume true; 220#factEXIT >#76#return; 221#L30-7 call binomialCoefficient_#t~ret3#1 := fact(binomialCoefficient_~n#1 - binomialCoefficient_~k#1);< 219#factENTRY ~n := #in~n; 231#L25 assume ~n <= 0;#res := 1; 230#factFINAL assume true; 220#factEXIT >#78#return; 227#L30-8 binomialCoefficient_#res#1 := (if binomialCoefficient_#t~ret1#1 < 0 && 0 != binomialCoefficient_#t~ret1#1 % (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) then (if binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1 < 0 then binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) - 1 else 1 + binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1)) else binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1));havoc binomialCoefficient_#t~ret1#1;havoc binomialCoefficient_#t~ret2#1;havoc binomialCoefficient_#t~ret3#1; 234#L30-9 main_#t~ret10#1 := binomialCoefficient_#res#1;assume { :end_inline_binomialCoefficient } true;havoc main_#t~ret10#1; 235#L42-2 main_#t~post8#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post8#1;havoc main_#t~post8#1; 243#L42-3 assume !(main_~k~0#1 <= main_~x~0#1); 239#L41-2 main_#t~post7#1 := main_~n~0#1;main_~n~0#1 := 1 + main_#t~post7#1;havoc main_#t~post7#1; 236#L41-3 [2022-10-17 10:15:00,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:00,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1171944, now seen corresponding path program 2 times [2022-10-17 10:15:00,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:00,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22068338] [2022-10-17 10:15:00,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:00,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:00,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:15:00,479 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:15:00,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:15:00,486 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:15:00,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:00,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1284911041, now seen corresponding path program 1 times [2022-10-17 10:15:00,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:00,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508035631] [2022-10-17 10:15:00,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:00,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:00,518 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:15:00,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [246941583] [2022-10-17 10:15:00,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:00,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:15:00,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:00,520 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:15:00,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-17 10:15:00,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:00,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-17 10:15:00,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:00,644 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-17 10:15:00,644 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:15:00,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:15:00,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508035631] [2022-10-17 10:15:00,645 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:15:00,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246941583] [2022-10-17 10:15:00,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246941583] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:00,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:00,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:15:00,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673832360] [2022-10-17 10:15:00,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:00,648 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-10-17 10:15:00,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:15:00,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:15:00,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:15:00,650 INFO L87 Difference]: Start difference. First operand 26 states and 35 transitions. cyclomatic complexity: 11 Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-17 10:15:00,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:00,736 INFO L93 Difference]: Finished difference Result 34 states and 50 transitions. [2022-10-17 10:15:00,736 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 50 transitions. [2022-10-17 10:15:00,738 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 25 [2022-10-17 10:15:00,739 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 34 states and 50 transitions. [2022-10-17 10:15:00,740 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2022-10-17 10:15:00,740 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2022-10-17 10:15:00,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 50 transitions. [2022-10-17 10:15:00,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:15:00,741 INFO L218 hiAutomatonCegarLoop]: Abstraction has 34 states and 50 transitions. [2022-10-17 10:15:00,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 50 transitions. [2022-10-17 10:15:00,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2022-10-17 10:15:00,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 7 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2022-10-17 10:15:00,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 42 transitions. [2022-10-17 10:15:00,747 INFO L240 hiAutomatonCegarLoop]: Abstraction has 28 states and 42 transitions. [2022-10-17 10:15:00,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:15:00,748 INFO L428 stractBuchiCegarLoop]: Abstraction has 28 states and 42 transitions. [2022-10-17 10:15:00,748 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-10-17 10:15:00,749 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 42 transitions. [2022-10-17 10:15:00,750 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 19 [2022-10-17 10:15:00,750 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:15:00,750 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:15:00,751 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-10-17 10:15:00,752 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:00,752 INFO L748 eck$LassoCheckResult]: Stem: 377#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 367#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~ret9#1, main_#t~ret10#1, main_#t~post8#1, main_~k~0#1, main_#t~post7#1, main_~n~0#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 368#L35 assume !(main_~x~0#1 < 0);main_~y~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 376#L38 assume !(main_~y~0#1 < 0);main_~z~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~n~0#1 := 0; 372#L41-3 [2022-10-17 10:15:00,752 INFO L750 eck$LassoCheckResult]: Loop: 372#L41-3 assume !!(main_~n~0#1 <= main_~x~0#1);main_~k~0#1 := 0; 373#L42-3 assume !!(main_~k~0#1 <= main_~x~0#1); 378#L43 assume !(main_~k~0#1 <= main_~n~0#1);assume { :begin_inline_binomialCoefficient } true;binomialCoefficient_#in~n#1, binomialCoefficient_#in~k#1 := main_~k~0#1, main_~n~0#1;havoc binomialCoefficient_#res#1;havoc binomialCoefficient_#t~ret1#1, binomialCoefficient_#t~ret2#1, binomialCoefficient_#t~ret3#1, binomialCoefficient_~n#1, binomialCoefficient_~k#1;binomialCoefficient_~n#1 := binomialCoefficient_#in~n#1;binomialCoefficient_~k#1 := binomialCoefficient_#in~k#1; 354#L30-5 call binomialCoefficient_#t~ret1#1 := fact(binomialCoefficient_~n#1);< 355#factENTRY ~n := #in~n; 366#L25 assume ~n <= 0;#res := 1; 365#factFINAL assume true; 356#factEXIT >#74#return; 362#L30-6 call binomialCoefficient_#t~ret2#1 := fact(binomialCoefficient_~k#1);< 355#factENTRY ~n := #in~n; 366#L25 assume ~n <= 0;#res := 1; 365#factFINAL assume true; 356#factEXIT >#76#return; 358#L30-7 call binomialCoefficient_#t~ret3#1 := fact(binomialCoefficient_~n#1 - binomialCoefficient_~k#1);< 355#factENTRY ~n := #in~n; 366#L25 assume !(~n <= 0); 360#L26 call #t~ret0 := fact(~n - 1);< 355#factENTRY ~n := #in~n; 366#L25 assume ~n <= 0;#res := 1; 365#factFINAL assume true; 356#factEXIT >#66#return; 364#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 379#factFINAL assume true; 381#factEXIT >#78#return; 369#L30-8 binomialCoefficient_#res#1 := (if binomialCoefficient_#t~ret1#1 < 0 && 0 != binomialCoefficient_#t~ret1#1 % (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) then (if binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1 < 0 then binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) - 1 else 1 + binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1)) else binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1));havoc binomialCoefficient_#t~ret1#1;havoc binomialCoefficient_#t~ret2#1;havoc binomialCoefficient_#t~ret3#1; 370#L30-9 main_#t~ret10#1 := binomialCoefficient_#res#1;assume { :end_inline_binomialCoefficient } true;havoc main_#t~ret10#1; 371#L42-2 main_#t~post8#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post8#1;havoc main_#t~post8#1; 380#L42-3 assume !(main_~k~0#1 <= main_~x~0#1); 375#L41-2 main_#t~post7#1 := main_~n~0#1;main_~n~0#1 := 1 + main_#t~post7#1;havoc main_#t~post7#1; 372#L41-3 [2022-10-17 10:15:00,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:00,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1171944, now seen corresponding path program 3 times [2022-10-17 10:15:00,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:00,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522398604] [2022-10-17 10:15:00,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:00,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:00,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:15:00,759 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:15:00,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:15:00,763 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:15:00,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:00,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1183838151, now seen corresponding path program 1 times [2022-10-17 10:15:00,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:00,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179160052] [2022-10-17 10:15:00,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:00,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:00,778 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:15:00,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1145489393] [2022-10-17 10:15:00,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:00,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:15:00,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:00,814 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:15:00,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-17 10:15:00,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:15:00,863 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:15:00,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:15:00,930 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:15:00,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:00,931 INFO L85 PathProgramCache]: Analyzing trace with hash 2107943858, now seen corresponding path program 1 times [2022-10-17 10:15:00,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:00,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911447154] [2022-10-17 10:15:00,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:00,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:00,970 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2022-10-17 10:15:00,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:00,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:15:00,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911447154] [2022-10-17 10:15:00,984 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-10-17 10:15:00,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655958218] [2022-10-17 10:15:00,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:00,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:15:00,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:00,988 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:15:00,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-17 10:15:01,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:01,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:15:01,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:01,094 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-17 10:15:01,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:15:01,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655958218] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:01,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:01,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:15:01,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116469185] [2022-10-17 10:15:01,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:01,568 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:15:01,568 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:15:01,568 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:15:01,569 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:15:01,569 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-10-17 10:15:01,569 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:01,569 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:15:01,569 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:15:01,569 INFO L133 ssoRankerPreferences]: Filename of dumped script: Binomial.c_Iteration3_Loop [2022-10-17 10:15:01,569 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:15:01,570 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:15:01,574 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:01,577 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:01,610 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:01,613 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:01,615 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:01,618 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:01,625 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:01,896 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:15:01,897 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-10-17 10:15:01,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:01,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:01,902 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:01,905 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:15:01,905 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:15:01,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-10-17 10:15:01,924 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:15:01,924 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_binomialCoefficient_#t~ret3#1=0} Honda state: {ULTIMATE.start_binomialCoefficient_#t~ret3#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:15:01,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:01,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:01,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:01,956 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:01,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-10-17 10:15:01,957 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:15:01,958 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:15:02,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:02,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:02,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:02,020 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:02,030 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-10-17 10:15:02,030 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:15:02,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-10-17 10:15:02,077 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-10-17 10:15:02,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:02,108 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:15:02,108 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:15:02,108 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:15:02,108 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:15:02,108 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-10-17 10:15:02,109 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:02,109 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:15:02,109 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:15:02,109 INFO L133 ssoRankerPreferences]: Filename of dumped script: Binomial.c_Iteration3_Loop [2022-10-17 10:15:02,109 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:15:02,109 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:15:02,111 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:02,114 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:02,116 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:02,118 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:02,120 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:02,122 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:02,124 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:02,429 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:15:02,429 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-10-17 10:15:02,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:02,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:02,434 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:02,437 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:02,446 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:15:02,446 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:02,446 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:02,446 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:02,446 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:15:02,447 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:15:02,447 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:02,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-10-17 10:15:02,460 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:02,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:02,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:02,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:02,498 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:02,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-10-17 10:15:02,504 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:02,513 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:15:02,514 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:02,514 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:02,514 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:02,514 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:15:02,515 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:15:02,515 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:02,534 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:02,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:02,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:02,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:02,574 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:02,580 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:02,588 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:15:02,589 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:02,589 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:02,589 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:02,589 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:15:02,589 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:15:02,590 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:02,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-10-17 10:15:02,603 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:02,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:02,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:02,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:02,640 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:02,648 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:02,657 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:15:02,657 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:02,657 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:02,657 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:02,657 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:15:02,659 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:15:02,659 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:02,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-10-17 10:15:02,669 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:02,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:02,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:02,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:02,708 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:02,715 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:02,724 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:15:02,724 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:02,725 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:02,725 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:02,725 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:15:02,726 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:15:02,726 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:02,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-10-17 10:15:02,742 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:02,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:02,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:02,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:02,763 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:02,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-10-17 10:15:02,765 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:02,772 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:15:02,772 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:02,772 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:02,772 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:02,772 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:15:02,773 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:15:02,773 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:02,774 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:02,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:02,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:02,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:02,795 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:02,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-10-17 10:15:02,796 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:02,804 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:15:02,804 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:02,805 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:02,805 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:02,805 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:15:02,809 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:15:02,809 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:02,835 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:02,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:02,869 INFO L490 LassoAnalysis]: Using template '2-nested'. [2022-10-17 10:15:02,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:02,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:02,873 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:02,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-10-17 10:15:02,880 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:02,887 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:15:02,887 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:02,887 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:02,887 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:02,887 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-10-17 10:15:02,888 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2022-10-17 10:15:02,888 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:02,889 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:02,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:02,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:02,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:02,910 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:02,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-10-17 10:15:02,914 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:02,921 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:15:02,921 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:02,921 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:02,922 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:02,922 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-10-17 10:15:02,922 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2022-10-17 10:15:02,923 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:02,926 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:02,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:02,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:02,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:02,947 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:02,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-10-17 10:15:02,949 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:02,955 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:15:02,955 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:02,956 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:02,956 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:02,956 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-10-17 10:15:02,957 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2022-10-17 10:15:02,957 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:02,968 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:03,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:03,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:03,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:03,002 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:03,018 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:03,029 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:15:03,029 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:03,029 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:03,029 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:03,029 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-10-17 10:15:03,030 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2022-10-17 10:15:03,030 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:03,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-10-17 10:15:03,041 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:03,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:03,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:03,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:03,079 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:03,083 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:03,092 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:15:03,092 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:03,093 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:03,093 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:03,093 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-10-17 10:15:03,094 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2022-10-17 10:15:03,094 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:03,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-10-17 10:15:03,113 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:03,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:03,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:03,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:03,150 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:03,152 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:03,161 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:15:03,161 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:03,161 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:03,161 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:03,162 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-10-17 10:15:03,166 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2022-10-17 10:15:03,166 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:03,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-10-17 10:15:03,177 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:03,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:03,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:03,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:03,218 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:03,221 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:03,231 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:15:03,232 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:03,232 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:03,232 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:03,232 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-10-17 10:15:03,240 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2022-10-17 10:15:03,241 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:03,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-10-17 10:15:03,254 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:03,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:03,288 INFO L490 LassoAnalysis]: Using template '3-nested'. [2022-10-17 10:15:03,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:03,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:03,289 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:03,293 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:03,302 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:15:03,302 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:03,302 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:03,302 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:03,303 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2022-10-17 10:15:03,304 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-10-17 10:15:03,304 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:03,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-10-17 10:15:03,317 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:03,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:03,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:03,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:03,354 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:03,358 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:03,366 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:15:03,367 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:03,367 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:03,367 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:03,367 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2022-10-17 10:15:03,369 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-10-17 10:15:03,369 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:03,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-10-17 10:15:03,381 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:03,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:03,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:03,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:03,419 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:03,422 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:03,431 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:15:03,431 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:03,431 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:03,431 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:03,431 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2022-10-17 10:15:03,432 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-10-17 10:15:03,433 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:03,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-10-17 10:15:03,445 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:03,474 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2022-10-17 10:15:03,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:03,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:03,476 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:03,477 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:03,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-10-17 10:15:03,485 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:15:03,485 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:03,485 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:03,485 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:03,485 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2022-10-17 10:15:03,486 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-10-17 10:15:03,486 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:03,521 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:03,550 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2022-10-17 10:15:03,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:03,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:03,552 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:03,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-10-17 10:15:03,556 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:03,563 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:15:03,563 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:03,563 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:03,563 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:03,563 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2022-10-17 10:15:03,564 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-10-17 10:15:03,564 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:03,565 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:03,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:03,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:03,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:03,594 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:03,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-10-17 10:15:03,597 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:03,604 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:15:03,604 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:03,605 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:03,605 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:03,605 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2022-10-17 10:15:03,606 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-10-17 10:15:03,606 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:03,612 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:03,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:03,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:03,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:03,635 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:03,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-10-17 10:15:03,637 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:03,645 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:15:03,645 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:03,645 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:03,645 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:03,645 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2022-10-17 10:15:03,651 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-10-17 10:15:03,651 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:03,677 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:03,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:03,705 INFO L490 LassoAnalysis]: Using template '4-nested'. [2022-10-17 10:15:03,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:03,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:03,706 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:03,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-10-17 10:15:03,708 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 [2022-10-17 10:15:03,715 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:15:03,715 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:03,715 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:03,715 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:03,715 INFO L205 nArgumentSynthesizer]: 5 template conjuncts. [2022-10-17 10:15:03,716 INFO L401 nArgumentSynthesizer]: We have 5 Motzkin's Theorem applications. [2022-10-17 10:15:03,716 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:03,718 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:03,738 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2022-10-17 10:15:03,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:03,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:03,740 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:03,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-10-17 10:15:03,742 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:03,750 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:15:03,750 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:03,750 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:03,750 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:03,750 INFO L205 nArgumentSynthesizer]: 5 template conjuncts. [2022-10-17 10:15:03,753 INFO L401 nArgumentSynthesizer]: We have 5 Motzkin's Theorem applications. [2022-10-17 10:15:03,753 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:03,781 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:03,817 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2022-10-17 10:15:03,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:03,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:03,818 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:03,820 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:03,830 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:15:03,830 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:03,830 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:03,830 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:03,830 INFO L205 nArgumentSynthesizer]: 5 template conjuncts. [2022-10-17 10:15:03,831 INFO L401 nArgumentSynthesizer]: We have 5 Motzkin's Theorem applications. [2022-10-17 10:15:03,831 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:03,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2022-10-17 10:15:03,845 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:03,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:03,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:03,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:03,889 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:03,891 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:03,901 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:15:03,901 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:03,901 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:03,901 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:03,901 INFO L205 nArgumentSynthesizer]: 5 template conjuncts. [2022-10-17 10:15:03,902 INFO L401 nArgumentSynthesizer]: We have 5 Motzkin's Theorem applications. [2022-10-17 10:15:03,902 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:03,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-10-17 10:15:03,921 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:03,945 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2022-10-17 10:15:03,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:03,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:03,946 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:03,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2022-10-17 10:15:03,958 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:03,965 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:15:03,965 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:03,965 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:03,965 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:03,965 INFO L205 nArgumentSynthesizer]: 5 template conjuncts. [2022-10-17 10:15:03,966 INFO L401 nArgumentSynthesizer]: We have 5 Motzkin's Theorem applications. [2022-10-17 10:15:03,966 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:03,997 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:04,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:04,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:04,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:04,024 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:04,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2022-10-17 10:15:04,027 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:04,034 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:15:04,035 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:04,035 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:04,035 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:04,035 INFO L205 nArgumentSynthesizer]: 5 template conjuncts. [2022-10-17 10:15:04,035 INFO L401 nArgumentSynthesizer]: We have 5 Motzkin's Theorem applications. [2022-10-17 10:15:04,036 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:04,037 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:04,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:04,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:04,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:04,058 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:04,070 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:04,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2022-10-17 10:15:04,078 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:15:04,079 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:04,079 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:04,079 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:04,079 INFO L205 nArgumentSynthesizer]: 5 template conjuncts. [2022-10-17 10:15:04,089 INFO L401 nArgumentSynthesizer]: We have 5 Motzkin's Theorem applications. [2022-10-17 10:15:04,090 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:04,121 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:04,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:04,157 INFO L490 LassoAnalysis]: Using template '2-phase'. [2022-10-17 10:15:04,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:04,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:04,161 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:04,166 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:04,175 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2022-10-17 10:15:04,175 INFO L338 nArgumentSynthesizer]: Template has degree 1. [2022-10-17 10:15:04,175 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:04,175 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:04,175 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:04,175 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-10-17 10:15:04,177 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2022-10-17 10:15:04,177 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:04,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2022-10-17 10:15:04,189 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:04,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:04,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:04,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:04,226 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:04,228 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:04,237 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2022-10-17 10:15:04,237 INFO L338 nArgumentSynthesizer]: Template has degree 1. [2022-10-17 10:15:04,238 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:04,238 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:04,238 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:04,238 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-10-17 10:15:04,239 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2022-10-17 10:15:04,239 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:04,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2022-10-17 10:15:04,253 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:04,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:04,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:04,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:04,293 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:04,298 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:04,307 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2022-10-17 10:15:04,307 INFO L338 nArgumentSynthesizer]: Template has degree 1. [2022-10-17 10:15:04,307 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:04,307 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:04,307 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:04,307 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-10-17 10:15:04,308 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2022-10-17 10:15:04,308 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:04,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2022-10-17 10:15:04,321 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:04,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:04,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:04,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:04,358 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:04,363 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:04,372 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2022-10-17 10:15:04,372 INFO L338 nArgumentSynthesizer]: Template has degree 1. [2022-10-17 10:15:04,372 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:04,372 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:04,372 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:04,373 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-10-17 10:15:04,374 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2022-10-17 10:15:04,374 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:04,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2022-10-17 10:15:04,385 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:04,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:04,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:04,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:04,418 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:04,423 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:04,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2022-10-17 10:15:04,432 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2022-10-17 10:15:04,432 INFO L338 nArgumentSynthesizer]: Template has degree 1. [2022-10-17 10:15:04,432 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:04,432 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:04,432 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:04,432 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-10-17 10:15:04,433 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2022-10-17 10:15:04,433 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:04,457 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:04,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:04,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:04,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:04,491 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:04,498 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:04,507 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2022-10-17 10:15:04,507 INFO L338 nArgumentSynthesizer]: Template has degree 1. [2022-10-17 10:15:04,507 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:04,507 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:04,507 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:04,507 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-10-17 10:15:04,508 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2022-10-17 10:15:04,508 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:04,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2022-10-17 10:15:04,525 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:04,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:04,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:04,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:04,559 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:04,561 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:04,571 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2022-10-17 10:15:04,571 INFO L338 nArgumentSynthesizer]: Template has degree 1. [2022-10-17 10:15:04,572 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:04,572 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:04,572 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:04,572 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-10-17 10:15:04,588 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2022-10-17 10:15:04,588 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:04,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2022-10-17 10:15:04,605 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:04,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:04,638 INFO L490 LassoAnalysis]: Using template '3-phase'. [2022-10-17 10:15:04,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:04,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:04,639 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:04,641 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:04,650 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2022-10-17 10:15:04,650 INFO L338 nArgumentSynthesizer]: Template has degree 2. [2022-10-17 10:15:04,650 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:04,651 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:04,651 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:04,651 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2022-10-17 10:15:04,652 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-10-17 10:15:04,652 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:04,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2022-10-17 10:15:04,673 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:04,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:04,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:04,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:04,709 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:04,710 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:04,720 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2022-10-17 10:15:04,720 INFO L338 nArgumentSynthesizer]: Template has degree 2. [2022-10-17 10:15:04,720 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:04,720 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:04,720 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:04,720 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2022-10-17 10:15:04,722 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-10-17 10:15:04,722 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:04,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2022-10-17 10:15:04,737 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:04,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:04,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:04,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:04,775 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:04,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2022-10-17 10:15:04,777 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:04,785 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2022-10-17 10:15:04,785 INFO L338 nArgumentSynthesizer]: Template has degree 2. [2022-10-17 10:15:04,785 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:04,785 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:04,785 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:04,785 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2022-10-17 10:15:04,786 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-10-17 10:15:04,786 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:04,801 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:04,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:04,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:04,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:04,832 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:04,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2022-10-17 10:15:04,833 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:04,841 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2022-10-17 10:15:04,841 INFO L338 nArgumentSynthesizer]: Template has degree 2. [2022-10-17 10:15:04,841 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:04,841 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:04,841 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:04,841 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2022-10-17 10:15:04,842 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-10-17 10:15:04,842 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:04,873 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:04,906 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Ended with exit code 0 [2022-10-17 10:15:04,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:04,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:04,909 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:04,918 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:04,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2022-10-17 10:15:04,925 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2022-10-17 10:15:04,925 INFO L338 nArgumentSynthesizer]: Template has degree 2. [2022-10-17 10:15:04,925 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:04,925 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:04,925 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:04,926 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2022-10-17 10:15:04,926 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-10-17 10:15:04,926 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:04,953 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:04,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:04,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:04,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:04,988 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:04,994 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:05,003 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2022-10-17 10:15:05,003 INFO L338 nArgumentSynthesizer]: Template has degree 2. [2022-10-17 10:15:05,003 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:05,003 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:05,003 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:05,003 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2022-10-17 10:15:05,005 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-10-17 10:15:05,005 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:05,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2022-10-17 10:15:05,025 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:05,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:05,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:05,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:05,059 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:05,061 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:05,072 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2022-10-17 10:15:05,072 INFO L338 nArgumentSynthesizer]: Template has degree 2. [2022-10-17 10:15:05,072 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:05,072 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:05,072 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:05,072 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2022-10-17 10:15:05,080 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-10-17 10:15:05,080 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:05,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2022-10-17 10:15:05,110 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:05,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:05,143 INFO L490 LassoAnalysis]: Using template '4-phase'. [2022-10-17 10:15:05,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:05,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:05,145 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:05,147 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 [2022-10-17 10:15:05,156 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2022-10-17 10:15:05,156 INFO L338 nArgumentSynthesizer]: Template has degree 3. [2022-10-17 10:15:05,157 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:05,157 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:05,157 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:05,157 INFO L205 nArgumentSynthesizer]: 5 template conjuncts. [2022-10-17 10:15:05,159 INFO L401 nArgumentSynthesizer]: We have 5 Motzkin's Theorem applications. [2022-10-17 10:15:05,159 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:05,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2022-10-17 10:15:05,173 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:05,198 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Ended with exit code 0 [2022-10-17 10:15:05,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:05,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:05,199 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:05,201 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:05,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2022-10-17 10:15:05,208 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2022-10-17 10:15:05,208 INFO L338 nArgumentSynthesizer]: Template has degree 3. [2022-10-17 10:15:05,208 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:05,208 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:05,209 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:05,209 INFO L205 nArgumentSynthesizer]: 5 template conjuncts. [2022-10-17 10:15:05,210 INFO L401 nArgumentSynthesizer]: We have 5 Motzkin's Theorem applications. [2022-10-17 10:15:05,210 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:05,226 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:05,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:05,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:05,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:05,245 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:05,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2022-10-17 10:15:05,246 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:05,254 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2022-10-17 10:15:05,254 INFO L338 nArgumentSynthesizer]: Template has degree 3. [2022-10-17 10:15:05,254 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:05,254 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:05,254 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:05,255 INFO L205 nArgumentSynthesizer]: 5 template conjuncts. [2022-10-17 10:15:05,256 INFO L401 nArgumentSynthesizer]: We have 5 Motzkin's Theorem applications. [2022-10-17 10:15:05,256 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:05,275 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:05,294 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Ended with exit code 0 [2022-10-17 10:15:05,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:05,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:05,295 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:05,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2022-10-17 10:15:05,297 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:05,304 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2022-10-17 10:15:05,304 INFO L338 nArgumentSynthesizer]: Template has degree 3. [2022-10-17 10:15:05,304 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:05,304 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:05,304 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:05,304 INFO L205 nArgumentSynthesizer]: 5 template conjuncts. [2022-10-17 10:15:05,305 INFO L401 nArgumentSynthesizer]: We have 5 Motzkin's Theorem applications. [2022-10-17 10:15:05,306 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:05,329 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:05,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Ended with exit code 0 [2022-10-17 10:15:05,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:05,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:05,362 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:05,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2022-10-17 10:15:05,363 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:05,373 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2022-10-17 10:15:05,373 INFO L338 nArgumentSynthesizer]: Template has degree 3. [2022-10-17 10:15:05,373 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:05,373 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:05,373 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:05,373 INFO L205 nArgumentSynthesizer]: 5 template conjuncts. [2022-10-17 10:15:05,375 INFO L401 nArgumentSynthesizer]: We have 5 Motzkin's Theorem applications. [2022-10-17 10:15:05,375 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:05,379 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:05,398 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Ended with exit code 0 [2022-10-17 10:15:05,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:05,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:05,399 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:05,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2022-10-17 10:15:05,401 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:05,408 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2022-10-17 10:15:05,408 INFO L338 nArgumentSynthesizer]: Template has degree 3. [2022-10-17 10:15:05,408 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:05,408 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:05,408 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:05,408 INFO L205 nArgumentSynthesizer]: 5 template conjuncts. [2022-10-17 10:15:05,410 INFO L401 nArgumentSynthesizer]: We have 5 Motzkin's Theorem applications. [2022-10-17 10:15:05,410 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:05,445 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:05,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:05,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:05,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:05,481 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:05,486 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:05,497 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2022-10-17 10:15:05,497 INFO L338 nArgumentSynthesizer]: Template has degree 3. [2022-10-17 10:15:05,497 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:05,497 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:05,498 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:05,498 INFO L205 nArgumentSynthesizer]: 5 template conjuncts. [2022-10-17 10:15:05,518 INFO L401 nArgumentSynthesizer]: We have 5 Motzkin's Theorem applications. [2022-10-17 10:15:05,518 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:05,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2022-10-17 10:15:05,556 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:05,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:05,588 INFO L490 LassoAnalysis]: Using template '2-lex'. [2022-10-17 10:15:05,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:05,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:05,589 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:05,594 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:05,603 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2022-10-17 10:15:05,603 INFO L338 nArgumentSynthesizer]: Template has degree 1. [2022-10-17 10:15:05,603 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:05,603 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:05,603 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:05,604 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2022-10-17 10:15:05,604 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-10-17 10:15:05,605 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:05,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2022-10-17 10:15:05,615 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:05,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:05,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:05,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:05,648 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:05,650 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:05,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2022-10-17 10:15:05,659 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2022-10-17 10:15:05,659 INFO L338 nArgumentSynthesizer]: Template has degree 1. [2022-10-17 10:15:05,659 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:05,659 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:05,659 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:05,660 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2022-10-17 10:15:05,660 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-10-17 10:15:05,660 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:05,681 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:05,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:05,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:05,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:05,715 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:05,717 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:05,726 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2022-10-17 10:15:05,726 INFO L338 nArgumentSynthesizer]: Template has degree 1. [2022-10-17 10:15:05,726 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:05,727 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:05,727 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:05,727 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2022-10-17 10:15:05,727 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-10-17 10:15:05,727 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:05,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2022-10-17 10:15:05,741 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:05,764 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Ended with exit code 0 [2022-10-17 10:15:05,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:05,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:05,765 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:05,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2022-10-17 10:15:05,767 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 [2022-10-17 10:15:05,774 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2022-10-17 10:15:05,774 INFO L338 nArgumentSynthesizer]: Template has degree 1. [2022-10-17 10:15:05,774 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:05,774 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:05,774 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:05,775 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2022-10-17 10:15:05,775 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-10-17 10:15:05,775 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:05,780 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:05,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:05,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:05,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:05,800 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:05,801 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:05,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2022-10-17 10:15:05,809 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2022-10-17 10:15:05,809 INFO L338 nArgumentSynthesizer]: Template has degree 1. [2022-10-17 10:15:05,809 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:05,809 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:05,809 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:05,809 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2022-10-17 10:15:05,810 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-10-17 10:15:05,810 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:05,813 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:05,832 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Ended with exit code 0 [2022-10-17 10:15:05,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:05,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:05,833 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:05,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2022-10-17 10:15:05,834 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:05,841 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2022-10-17 10:15:05,841 INFO L338 nArgumentSynthesizer]: Template has degree 1. [2022-10-17 10:15:05,841 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:05,841 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:05,841 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:05,841 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2022-10-17 10:15:05,842 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-10-17 10:15:05,842 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:05,844 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:05,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:05,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:05,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:05,865 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:05,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2022-10-17 10:15:05,866 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:05,877 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2022-10-17 10:15:05,877 INFO L338 nArgumentSynthesizer]: Template has degree 1. [2022-10-17 10:15:05,877 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:05,877 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:05,878 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:05,878 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2022-10-17 10:15:05,887 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-10-17 10:15:05,888 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:05,901 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:05,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Ended with exit code 0 [2022-10-17 10:15:05,920 INFO L490 LassoAnalysis]: Using template '3-lex'. [2022-10-17 10:15:05,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:05,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:05,921 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:05,946 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:05,955 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2022-10-17 10:15:05,955 INFO L338 nArgumentSynthesizer]: Template has degree 3. [2022-10-17 10:15:05,955 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:05,955 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:05,955 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:05,955 INFO L205 nArgumentSynthesizer]: 6 template conjuncts. [2022-10-17 10:15:05,956 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-10-17 10:15:05,956 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:05,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Waiting until timeout for monitored process [2022-10-17 10:15:05,981 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:06,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:06,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:06,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:06,015 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:06,018 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:06,027 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2022-10-17 10:15:06,028 INFO L338 nArgumentSynthesizer]: Template has degree 3. [2022-10-17 10:15:06,028 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:06,028 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:06,028 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:06,028 INFO L205 nArgumentSynthesizer]: 6 template conjuncts. [2022-10-17 10:15:06,029 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-10-17 10:15:06,029 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:06,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Waiting until timeout for monitored process [2022-10-17 10:15:06,041 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:06,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:06,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:06,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:06,079 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:06,083 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:06,092 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2022-10-17 10:15:06,092 INFO L338 nArgumentSynthesizer]: Template has degree 3. [2022-10-17 10:15:06,092 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:06,092 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:06,092 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:06,092 INFO L205 nArgumentSynthesizer]: 6 template conjuncts. [2022-10-17 10:15:06,094 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-10-17 10:15:06,094 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:06,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Waiting until timeout for monitored process [2022-10-17 10:15:06,109 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:06,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:06,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:06,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:06,142 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:06,144 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:06,154 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2022-10-17 10:15:06,154 INFO L338 nArgumentSynthesizer]: Template has degree 3. [2022-10-17 10:15:06,154 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:06,154 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:06,154 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:06,154 INFO L205 nArgumentSynthesizer]: 6 template conjuncts. [2022-10-17 10:15:06,156 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-10-17 10:15:06,156 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:06,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Waiting until timeout for monitored process [2022-10-17 10:15:06,167 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:06,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:06,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:06,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:06,200 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:06,202 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:06,211 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2022-10-17 10:15:06,211 INFO L338 nArgumentSynthesizer]: Template has degree 3. [2022-10-17 10:15:06,212 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:06,212 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:06,212 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:06,212 INFO L205 nArgumentSynthesizer]: 6 template conjuncts. [2022-10-17 10:15:06,213 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-10-17 10:15:06,213 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:06,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Waiting until timeout for monitored process [2022-10-17 10:15:06,233 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:06,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Ended with exit code 0 [2022-10-17 10:15:06,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:06,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:06,265 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:06,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Waiting until timeout for monitored process [2022-10-17 10:15:06,266 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:06,273 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2022-10-17 10:15:06,273 INFO L338 nArgumentSynthesizer]: Template has degree 3. [2022-10-17 10:15:06,273 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:06,273 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:06,273 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:06,274 INFO L205 nArgumentSynthesizer]: 6 template conjuncts. [2022-10-17 10:15:06,274 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-10-17 10:15:06,274 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:06,289 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:06,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:06,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:06,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:06,310 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:06,311 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:06,323 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2022-10-17 10:15:06,323 INFO L338 nArgumentSynthesizer]: Template has degree 3. [2022-10-17 10:15:06,323 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:06,323 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:06,323 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:06,324 INFO L205 nArgumentSynthesizer]: 6 template conjuncts. [2022-10-17 10:15:06,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Waiting until timeout for monitored process [2022-10-17 10:15:06,339 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-10-17 10:15:06,339 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:06,366 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:06,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:06,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:15:06,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:15:06,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:15:06,402 INFO L87 Difference]: Start difference. First operand 28 states and 42 transitions. cyclomatic complexity: 16 Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-17 10:15:06,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:06,440 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2022-10-17 10:15:06,441 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 55 transitions. [2022-10-17 10:15:06,443 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 26 [2022-10-17 10:15:06,444 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 55 transitions. [2022-10-17 10:15:06,445 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2022-10-17 10:15:06,445 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2022-10-17 10:15:06,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 55 transitions. [2022-10-17 10:15:06,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:15:06,446 INFO L218 hiAutomatonCegarLoop]: Abstraction has 35 states and 55 transitions. [2022-10-17 10:15:06,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 55 transitions. [2022-10-17 10:15:06,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 29. [2022-10-17 10:15:06,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 7 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2022-10-17 10:15:06,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 43 transitions. [2022-10-17 10:15:06,452 INFO L240 hiAutomatonCegarLoop]: Abstraction has 29 states and 43 transitions. [2022-10-17 10:15:06,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:15:06,454 INFO L428 stractBuchiCegarLoop]: Abstraction has 29 states and 43 transitions. [2022-10-17 10:15:06,454 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-10-17 10:15:06,454 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 29 states and 43 transitions. [2022-10-17 10:15:06,455 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-10-17 10:15:06,455 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:15:06,455 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:15:06,457 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-10-17 10:15:06,457 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 6, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:06,457 INFO L748 eck$LassoCheckResult]: Stem: 545#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 535#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~ret9#1, main_#t~ret10#1, main_#t~post8#1, main_~k~0#1, main_#t~post7#1, main_~n~0#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 536#L35 assume !(main_~x~0#1 < 0);main_~y~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 544#L38 assume !(main_~y~0#1 < 0);main_~z~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~n~0#1 := 0; 540#L41-3 [2022-10-17 10:15:06,458 INFO L750 eck$LassoCheckResult]: Loop: 540#L41-3 assume !!(main_~n~0#1 <= main_~x~0#1);main_~k~0#1 := 0; 541#L42-3 assume !!(main_~k~0#1 <= main_~x~0#1); 546#L43 assume main_~k~0#1 <= main_~n~0#1;assume { :begin_inline_binomialCoefficient } true;binomialCoefficient_#in~n#1, binomialCoefficient_#in~k#1 := main_~n~0#1, main_~k~0#1;havoc binomialCoefficient_#res#1;havoc binomialCoefficient_#t~ret1#1, binomialCoefficient_#t~ret2#1, binomialCoefficient_#t~ret3#1, binomialCoefficient_~n#1, binomialCoefficient_~k#1;binomialCoefficient_~n#1 := binomialCoefficient_#in~n#1;binomialCoefficient_~k#1 := binomialCoefficient_#in~k#1; 530#L30 call binomialCoefficient_#t~ret1#1 := fact(binomialCoefficient_~n#1);< 523#factENTRY ~n := #in~n; 534#L25 assume !(~n <= 0); 527#L26 call #t~ret0 := fact(~n - 1);< 523#factENTRY ~n := #in~n; 534#L25 assume ~n <= 0;#res := 1; 533#factFINAL assume true; 525#factEXIT >#66#return; 531#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 547#factFINAL assume true; 550#factEXIT >#68#return; 528#L30-1 call binomialCoefficient_#t~ret2#1 := fact(binomialCoefficient_~k#1);< 523#factENTRY ~n := #in~n; 534#L25 assume !(~n <= 0); 527#L26 call #t~ret0 := fact(~n - 1);< 523#factENTRY ~n := #in~n; 534#L25 assume ~n <= 0;#res := 1; 533#factFINAL assume true; 525#factEXIT >#66#return; 531#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 547#factFINAL assume true; 550#factEXIT >#70#return; 524#L30-2 call binomialCoefficient_#t~ret3#1 := fact(binomialCoefficient_~n#1 - binomialCoefficient_~k#1);< 523#factENTRY ~n := #in~n; 534#L25 assume !(~n <= 0); 527#L26 call #t~ret0 := fact(~n - 1);< 523#factENTRY ~n := #in~n; 534#L25 assume ~n <= 0;#res := 1; 533#factFINAL assume true; 525#factEXIT >#66#return; 531#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 547#factFINAL assume true; 550#factEXIT >#72#return; 532#L30-3 binomialCoefficient_#res#1 := (if binomialCoefficient_#t~ret1#1 < 0 && 0 != binomialCoefficient_#t~ret1#1 % (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) then (if binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1 < 0 then binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) - 1 else 1 + binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1)) else binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1));havoc binomialCoefficient_#t~ret1#1;havoc binomialCoefficient_#t~ret2#1;havoc binomialCoefficient_#t~ret3#1; 542#L30-4 main_#t~ret9#1 := binomialCoefficient_#res#1;assume { :end_inline_binomialCoefficient } true;havoc main_#t~ret9#1; 539#L42-2 main_#t~post8#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post8#1;havoc main_#t~post8#1; 548#L42-3 assume !(main_~k~0#1 <= main_~x~0#1); 543#L41-2 main_#t~post7#1 := main_~n~0#1;main_~n~0#1 := 1 + main_#t~post7#1;havoc main_#t~post7#1; 540#L41-3 [2022-10-17 10:15:06,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:06,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1171944, now seen corresponding path program 4 times [2022-10-17 10:15:06,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:06,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202826135] [2022-10-17 10:15:06,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:06,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:06,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:15:06,463 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:15:06,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:15:06,468 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:15:06,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:06,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1909923709, now seen corresponding path program 1 times [2022-10-17 10:15:06,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:06,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934474800] [2022-10-17 10:15:06,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:06,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:06,479 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:15:06,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1974350494] [2022-10-17 10:15:06,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:06,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:15:06,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:06,498 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:15:06,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-10-17 10:15:06,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:06,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 10:15:06,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:06,616 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-10-17 10:15:06,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:15:06,727 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 11 proven. 9 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-10-17 10:15:06,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:15:06,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934474800] [2022-10-17 10:15:06,727 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:15:06,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974350494] [2022-10-17 10:15:06,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974350494] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:15:06,728 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:15:06,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2022-10-17 10:15:06,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664225699] [2022-10-17 10:15:06,728 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:15:06,729 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-10-17 10:15:06,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:15:06,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:15:06,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:15:06,730 INFO L87 Difference]: Start difference. First operand 29 states and 43 transitions. cyclomatic complexity: 16 Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-10-17 10:15:06,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:06,881 INFO L93 Difference]: Finished difference Result 41 states and 62 transitions. [2022-10-17 10:15:06,881 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 62 transitions. [2022-10-17 10:15:06,883 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 32 [2022-10-17 10:15:06,888 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 41 states and 62 transitions. [2022-10-17 10:15:06,888 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2022-10-17 10:15:06,890 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2022-10-17 10:15:06,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 62 transitions. [2022-10-17 10:15:06,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:15:06,896 INFO L218 hiAutomatonCegarLoop]: Abstraction has 41 states and 62 transitions. [2022-10-17 10:15:06,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 62 transitions. [2022-10-17 10:15:06,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 31. [2022-10-17 10:15:06,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 9 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (16), 8 states have call predecessors, (16), 9 states have call successors, (16) [2022-10-17 10:15:06,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 48 transitions. [2022-10-17 10:15:06,909 INFO L240 hiAutomatonCegarLoop]: Abstraction has 31 states and 48 transitions. [2022-10-17 10:15:06,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:15:06,912 INFO L428 stractBuchiCegarLoop]: Abstraction has 31 states and 48 transitions. [2022-10-17 10:15:06,912 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-10-17 10:15:06,912 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 48 transitions. [2022-10-17 10:15:06,915 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 22 [2022-10-17 10:15:06,915 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:15:06,915 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:15:06,917 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-10-17 10:15:06,917 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:06,917 INFO L748 eck$LassoCheckResult]: Stem: 871#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 861#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~ret9#1, main_#t~ret10#1, main_#t~post8#1, main_~k~0#1, main_#t~post7#1, main_~n~0#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 862#L35 assume !(main_~x~0#1 < 0);main_~y~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 870#L38 assume !(main_~y~0#1 < 0);main_~z~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~n~0#1 := 0; 866#L41-3 [2022-10-17 10:15:06,918 INFO L750 eck$LassoCheckResult]: Loop: 866#L41-3 assume !!(main_~n~0#1 <= main_~x~0#1);main_~k~0#1 := 0; 867#L42-3 assume !!(main_~k~0#1 <= main_~x~0#1); 872#L43 assume main_~k~0#1 <= main_~n~0#1;assume { :begin_inline_binomialCoefficient } true;binomialCoefficient_#in~n#1, binomialCoefficient_#in~k#1 := main_~n~0#1, main_~k~0#1;havoc binomialCoefficient_#res#1;havoc binomialCoefficient_#t~ret1#1, binomialCoefficient_#t~ret2#1, binomialCoefficient_#t~ret3#1, binomialCoefficient_~n#1, binomialCoefficient_~k#1;binomialCoefficient_~n#1 := binomialCoefficient_#in~n#1;binomialCoefficient_~k#1 := binomialCoefficient_#in~k#1; 855#L30 call binomialCoefficient_#t~ret1#1 := fact(binomialCoefficient_~n#1);< 847#factENTRY ~n := #in~n; 860#L25 assume ~n <= 0;#res := 1; 859#factFINAL assume true; 849#factEXIT >#68#return; 851#L30-1 call binomialCoefficient_#t~ret2#1 := fact(binomialCoefficient_~k#1);< 847#factENTRY ~n := #in~n; 860#L25 assume ~n <= 0;#res := 1; 859#factFINAL assume true; 849#factEXIT >#70#return; 848#L30-2 call binomialCoefficient_#t~ret3#1 := fact(binomialCoefficient_~n#1 - binomialCoefficient_~k#1);< 847#factENTRY ~n := #in~n; 860#L25 assume ~n <= 0;#res := 1; 859#factFINAL assume true; 849#factEXIT >#72#return; 858#L30-3 binomialCoefficient_#res#1 := (if binomialCoefficient_#t~ret1#1 < 0 && 0 != binomialCoefficient_#t~ret1#1 % (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) then (if binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1 < 0 then binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) - 1 else 1 + binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1)) else binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1));havoc binomialCoefficient_#t~ret1#1;havoc binomialCoefficient_#t~ret2#1;havoc binomialCoefficient_#t~ret3#1; 868#L30-4 main_#t~ret9#1 := binomialCoefficient_#res#1;assume { :end_inline_binomialCoefficient } true;havoc main_#t~ret9#1; 865#L42-2 main_#t~post8#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post8#1;havoc main_#t~post8#1; 874#L42-3 assume !(main_~k~0#1 <= main_~x~0#1); 869#L41-2 main_#t~post7#1 := main_~n~0#1;main_~n~0#1 := 1 + main_#t~post7#1;havoc main_#t~post7#1; 866#L41-3 [2022-10-17 10:15:06,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:06,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1171944, now seen corresponding path program 5 times [2022-10-17 10:15:06,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:06,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245547121] [2022-10-17 10:15:06,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:06,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:06,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:15:06,933 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:15:06,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:15:06,941 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:15:06,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:06,943 INFO L85 PathProgramCache]: Analyzing trace with hash -743603515, now seen corresponding path program 1 times [2022-10-17 10:15:06,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:06,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877687285] [2022-10-17 10:15:06,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:06,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:06,952 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:15:06,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1201742304] [2022-10-17 10:15:06,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:06,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:15:06,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:06,958 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:15:06,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-10-17 10:15:07,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:15:07,000 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:15:07,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:15:07,018 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:15:07,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:07,021 INFO L85 PathProgramCache]: Analyzing trace with hash 343305470, now seen corresponding path program 1 times [2022-10-17 10:15:07,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:07,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598586807] [2022-10-17 10:15:07,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:07,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:07,043 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:15:07,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [841153607] [2022-10-17 10:15:07,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:07,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:15:07,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:07,046 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:15:07,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-10-17 10:15:07,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:15:07,084 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:15:07,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:15:07,106 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:15:07,400 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:15:07,400 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:15:07,401 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:15:07,401 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:15:07,401 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-10-17 10:15:07,401 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:07,401 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:15:07,401 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:15:07,401 INFO L133 ssoRankerPreferences]: Filename of dumped script: Binomial.c_Iteration5_Loop [2022-10-17 10:15:07,401 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:15:07,402 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:15:07,404 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:07,407 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:07,427 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:07,429 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:07,431 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:07,433 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:07,435 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:07,437 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:07,536 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:15:07,536 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-10-17 10:15:07,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:07,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:07,544 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:07,546 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:15:07,546 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:15:07,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Waiting until timeout for monitored process [2022-10-17 10:15:07,571 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:15:07,571 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~ret9#1=0} Honda state: {ULTIMATE.start_main_#t~ret9#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:15:07,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:07,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:07,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:07,607 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:07,609 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:15:07,609 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:15:07,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Waiting until timeout for monitored process [2022-10-17 10:15:07,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:07,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:07,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:07,679 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:07,681 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-10-17 10:15:07,681 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:15:07,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Waiting until timeout for monitored process [2022-10-17 10:15:08,491 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-10-17 10:15:08,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:08,494 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:15:08,494 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:15:08,495 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:15:08,495 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:15:08,495 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-10-17 10:15:08,495 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:08,495 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:15:08,495 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:15:08,495 INFO L133 ssoRankerPreferences]: Filename of dumped script: Binomial.c_Iteration5_Loop [2022-10-17 10:15:08,495 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:15:08,495 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:15:08,496 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:08,501 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:08,516 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:08,524 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:08,526 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:08,530 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:08,532 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:08,534 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:08,643 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:15:08,643 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-10-17 10:15:08,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:08,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:08,645 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:08,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Waiting until timeout for monitored process [2022-10-17 10:15:08,647 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:08,654 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:15:08,654 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:08,655 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:08,655 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:08,655 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:15:08,655 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:15:08,655 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:08,656 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:08,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:08,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:08,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:08,676 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:08,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (84)] Waiting until timeout for monitored process [2022-10-17 10:15:08,678 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:08,685 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:15:08,685 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:08,685 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:08,685 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:08,685 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:15:08,687 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:15:08,687 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:08,705 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-10-17 10:15:08,708 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-10-17 10:15:08,708 INFO L444 ModelExtractionUtils]: 6 out of 9 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-10-17 10:15:08,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:08,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:08,709 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:08,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (85)] Waiting until timeout for monitored process [2022-10-17 10:15:08,710 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-10-17 10:15:08,710 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-10-17 10:15:08,710 INFO L513 LassoAnalysis]: Proved termination. [2022-10-17 10:15:08,711 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0#1) = -2*ULTIMATE.start_main_~n~0#1 + 1 Supporting invariants [] [2022-10-17 10:15:08,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (84)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:08,732 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-10-17 10:15:08,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:08,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:08,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 10:15:08,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:08,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:08,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 14 conjunts are in the unsatisfiable core [2022-10-17 10:15:08,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:08,948 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-17 10:15:08,949 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 [2022-10-17 10:15:08,949 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 48 transitions. cyclomatic complexity: 19 Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-17 10:15:09,261 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 48 transitions. cyclomatic complexity: 19. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Result 123 states and 190 transitions. Complement of second has 26 states. [2022-10-17 10:15:09,261 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 [2022-10-17 10:15:09,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-17 10:15:09,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 71 transitions. [2022-10-17 10:15:09,263 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 71 transitions. Stem has 4 letters. Loop has 23 letters. [2022-10-17 10:15:09,264 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:15:09,264 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 71 transitions. Stem has 27 letters. Loop has 23 letters. [2022-10-17 10:15:09,265 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:15:09,265 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 71 transitions. Stem has 4 letters. Loop has 46 letters. [2022-10-17 10:15:09,266 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:15:09,266 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 123 states and 190 transitions. [2022-10-17 10:15:09,270 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 35 [2022-10-17 10:15:09,276 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 123 states to 122 states and 189 transitions. [2022-10-17 10:15:09,278 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 62 [2022-10-17 10:15:09,279 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 63 [2022-10-17 10:15:09,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 122 states and 189 transitions. [2022-10-17 10:15:09,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-10-17 10:15:09,285 INFO L218 hiAutomatonCegarLoop]: Abstraction has 122 states and 189 transitions. [2022-10-17 10:15:09,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states and 189 transitions. [2022-10-17 10:15:09,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 117. [2022-10-17 10:15:09,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 71 states have (on average 1.2112676056338028) internal successors, (86), 76 states have internal predecessors, (86), 36 states have call successors, (36), 6 states have call predecessors, (36), 10 states have return successors, (58), 34 states have call predecessors, (58), 36 states have call successors, (58) [2022-10-17 10:15:09,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 180 transitions. [2022-10-17 10:15:09,305 INFO L240 hiAutomatonCegarLoop]: Abstraction has 117 states and 180 transitions. [2022-10-17 10:15:09,305 INFO L428 stractBuchiCegarLoop]: Abstraction has 117 states and 180 transitions. [2022-10-17 10:15:09,305 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-10-17 10:15:09,305 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 117 states and 180 transitions. [2022-10-17 10:15:09,308 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 35 [2022-10-17 10:15:09,309 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:15:09,309 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:15:09,311 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-10-17 10:15:09,311 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [5, 5, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:09,311 INFO L748 eck$LassoCheckResult]: Stem: 1203#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1181#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~ret9#1, main_#t~ret10#1, main_#t~post8#1, main_~k~0#1, main_#t~post7#1, main_~n~0#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 1182#L35 assume !(main_~x~0#1 < 0);main_~y~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 1202#L38 assume !(main_~y~0#1 < 0);main_~z~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~n~0#1 := 0; 1213#L41-3 assume !!(main_~n~0#1 <= main_~x~0#1);main_~k~0#1 := 0; 1192#L42-3 [2022-10-17 10:15:09,312 INFO L750 eck$LassoCheckResult]: Loop: 1192#L42-3 assume !!(main_~k~0#1 <= main_~x~0#1); 1209#L43 assume main_~k~0#1 <= main_~n~0#1;assume { :begin_inline_binomialCoefficient } true;binomialCoefficient_#in~n#1, binomialCoefficient_#in~k#1 := main_~n~0#1, main_~k~0#1;havoc binomialCoefficient_#res#1;havoc binomialCoefficient_#t~ret1#1, binomialCoefficient_#t~ret2#1, binomialCoefficient_#t~ret3#1, binomialCoefficient_~n#1, binomialCoefficient_~k#1;binomialCoefficient_~n#1 := binomialCoefficient_#in~n#1;binomialCoefficient_~k#1 := binomialCoefficient_#in~k#1; 1171#L30 call binomialCoefficient_#t~ret1#1 := fact(binomialCoefficient_~n#1);< 1152#factENTRY ~n := #in~n; 1234#L25 assume !(~n <= 0); 1138#L26 call #t~ret0 := fact(~n - 1);< 1187#factENTRY ~n := #in~n; 1230#L25 assume ~n <= 0;#res := 1; 1229#factFINAL assume true; 1137#factEXIT >#66#return; 1141#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 1232#factFINAL assume true; 1221#factEXIT >#68#return; 1210#L30-1 call binomialCoefficient_#t~ret2#1 := fact(binomialCoefficient_~k#1);< 1152#factENTRY ~n := #in~n; 1234#L25 assume ~n <= 0;#res := 1; 1233#factFINAL assume true; 1228#factEXIT >#70#return; 1151#L30-2 call binomialCoefficient_#t~ret3#1 := fact(binomialCoefficient_~n#1 - binomialCoefficient_~k#1);< 1152#factENTRY ~n := #in~n; 1234#L25 assume !(~n <= 0); 1138#L26 call #t~ret0 := fact(~n - 1);< 1187#factENTRY ~n := #in~n; 1230#L25 assume ~n <= 0;#res := 1; 1229#factFINAL assume true; 1137#factEXIT >#66#return; 1141#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 1232#factFINAL assume true; 1221#factEXIT >#72#return; 1220#L30-3 binomialCoefficient_#res#1 := (if binomialCoefficient_#t~ret1#1 < 0 && 0 != binomialCoefficient_#t~ret1#1 % (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) then (if binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1 < 0 then binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) - 1 else 1 + binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1)) else binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1));havoc binomialCoefficient_#t~ret1#1;havoc binomialCoefficient_#t~ret2#1;havoc binomialCoefficient_#t~ret3#1; 1218#L30-4 main_#t~ret9#1 := binomialCoefficient_#res#1;assume { :end_inline_binomialCoefficient } true;havoc main_#t~ret9#1; 1216#L42-2 main_#t~post8#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post8#1;havoc main_#t~post8#1; 1214#L42-3 assume !(main_~k~0#1 <= main_~x~0#1); 1200#L41-2 main_#t~post7#1 := main_~n~0#1;main_~n~0#1 := 1 + main_#t~post7#1;havoc main_#t~post7#1; 1191#L41-3 assume !!(main_~n~0#1 <= main_~x~0#1);main_~k~0#1 := 0; 1192#L42-3 [2022-10-17 10:15:09,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:09,312 INFO L85 PathProgramCache]: Analyzing trace with hash 36330292, now seen corresponding path program 1 times [2022-10-17 10:15:09,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:09,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624953241] [2022-10-17 10:15:09,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:09,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:09,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:15:09,329 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:15:09,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:15:09,333 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:15:09,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:09,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1403101825, now seen corresponding path program 2 times [2022-10-17 10:15:09,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:09,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829508502] [2022-10-17 10:15:09,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:09,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:09,339 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:15:09,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1480170237] [2022-10-17 10:15:09,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:15:09,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:15:09,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:09,341 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:15:09,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-10-17 10:15:09,377 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-17 10:15:09,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:15:09,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 14 conjunts are in the unsatisfiable core [2022-10-17 10:15:09,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:09,530 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-10-17 10:15:09,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:15:09,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (85)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:09,853 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-10-17 10:15:09,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:15:09,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829508502] [2022-10-17 10:15:09,853 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:15:09,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480170237] [2022-10-17 10:15:09,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480170237] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:15:09,853 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:15:09,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2022-10-17 10:15:09,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216250820] [2022-10-17 10:15:09,854 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:15:09,854 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-10-17 10:15:09,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:15:09,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-10-17 10:15:09,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2022-10-17 10:15:09,856 INFO L87 Difference]: Start difference. First operand 117 states and 180 transitions. cyclomatic complexity: 68 Second operand has 20 states, 15 states have (on average 2.066666666666667) internal successors, (31), 18 states have internal predecessors, (31), 8 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2022-10-17 10:15:10,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:10,696 INFO L93 Difference]: Finished difference Result 284 states and 438 transitions. [2022-10-17 10:15:10,696 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 284 states and 438 transitions. [2022-10-17 10:15:10,703 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 110 [2022-10-17 10:15:10,711 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 284 states to 271 states and 424 transitions. [2022-10-17 10:15:10,711 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 137 [2022-10-17 10:15:10,712 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 137 [2022-10-17 10:15:10,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 271 states and 424 transitions. [2022-10-17 10:15:10,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-10-17 10:15:10,713 INFO L218 hiAutomatonCegarLoop]: Abstraction has 271 states and 424 transitions. [2022-10-17 10:15:10,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states and 424 transitions. [2022-10-17 10:15:10,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 153. [2022-10-17 10:15:10,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 97 states have (on average 1.1546391752577319) internal successors, (112), 102 states have internal predecessors, (112), 46 states have call successors, (46), 6 states have call predecessors, (46), 10 states have return successors, (78), 44 states have call predecessors, (78), 46 states have call successors, (78) [2022-10-17 10:15:10,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 236 transitions. [2022-10-17 10:15:10,739 INFO L240 hiAutomatonCegarLoop]: Abstraction has 153 states and 236 transitions. [2022-10-17 10:15:10,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-10-17 10:15:10,740 INFO L428 stractBuchiCegarLoop]: Abstraction has 153 states and 236 transitions. [2022-10-17 10:15:10,740 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-10-17 10:15:10,740 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 153 states and 236 transitions. [2022-10-17 10:15:10,742 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 52 [2022-10-17 10:15:10,742 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:15:10,742 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:15:10,744 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-10-17 10:15:10,744 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [14, 14, 9, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:10,744 INFO L748 eck$LassoCheckResult]: Stem: 1867#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1844#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~ret9#1, main_#t~ret10#1, main_#t~post8#1, main_~k~0#1, main_#t~post7#1, main_~n~0#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 1845#L35 assume !(main_~x~0#1 < 0);main_~y~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 1866#L38 assume !(main_~y~0#1 < 0);main_~z~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~n~0#1 := 0; 1886#L41-3 assume !!(main_~n~0#1 <= main_~x~0#1);main_~k~0#1 := 0; 1856#L42-3 [2022-10-17 10:15:10,744 INFO L750 eck$LassoCheckResult]: Loop: 1856#L42-3 assume !!(main_~k~0#1 <= main_~x~0#1); 1913#L43 assume main_~k~0#1 <= main_~n~0#1;assume { :begin_inline_binomialCoefficient } true;binomialCoefficient_#in~n#1, binomialCoefficient_#in~k#1 := main_~n~0#1, main_~k~0#1;havoc binomialCoefficient_#res#1;havoc binomialCoefficient_#t~ret1#1, binomialCoefficient_#t~ret2#1, binomialCoefficient_#t~ret3#1, binomialCoefficient_~n#1, binomialCoefficient_~k#1;binomialCoefficient_~n#1 := binomialCoefficient_#in~n#1;binomialCoefficient_~k#1 := binomialCoefficient_#in~k#1; 1803#L30 call binomialCoefficient_#t~ret1#1 := fact(binomialCoefficient_~n#1);< 1840#factENTRY ~n := #in~n; 1841#L25 assume !(~n <= 0); 1849#L26 call #t~ret0 := fact(~n - 1);< 1850#factENTRY ~n := #in~n; 1905#L25 assume ~n <= 0;#res := 1; 1904#factFINAL assume true; 1900#factEXIT >#66#return; 1903#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 1909#factFINAL assume true; 1908#factEXIT >#68#return; 1796#L30-1 call binomialCoefficient_#t~ret2#1 := fact(binomialCoefficient_~k#1);< 1840#factENTRY ~n := #in~n; 1841#L25 assume ~n <= 0;#res := 1; 1828#factFINAL assume true; 1795#factEXIT >#70#return; 1799#L30-2 call binomialCoefficient_#t~ret3#1 := fact(binomialCoefficient_~n#1 - binomialCoefficient_~k#1);< 1840#factENTRY ~n := #in~n; 1841#L25 assume ~n <= 0;#res := 1; 1828#factFINAL assume true; 1795#factEXIT >#72#return; 1808#L30-3 binomialCoefficient_#res#1 := (if binomialCoefficient_#t~ret1#1 < 0 && 0 != binomialCoefficient_#t~ret1#1 % (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) then (if binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1 < 0 then binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) - 1 else 1 + binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1)) else binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1));havoc binomialCoefficient_#t~ret1#1;havoc binomialCoefficient_#t~ret2#1;havoc binomialCoefficient_#t~ret3#1; 1859#L30-4 main_#t~ret9#1 := binomialCoefficient_#res#1;assume { :end_inline_binomialCoefficient } true;havoc main_#t~ret9#1; 1885#L42-2 main_#t~post8#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post8#1;havoc main_#t~post8#1; 1877#L42-3 assume !!(main_~k~0#1 <= main_~x~0#1); 1868#L43 assume main_~k~0#1 <= main_~n~0#1;assume { :begin_inline_binomialCoefficient } true;binomialCoefficient_#in~n#1, binomialCoefficient_#in~k#1 := main_~n~0#1, main_~k~0#1;havoc binomialCoefficient_#res#1;havoc binomialCoefficient_#t~ret1#1, binomialCoefficient_#t~ret2#1, binomialCoefficient_#t~ret3#1, binomialCoefficient_~n#1, binomialCoefficient_~k#1;binomialCoefficient_~n#1 := binomialCoefficient_#in~n#1;binomialCoefficient_~k#1 := binomialCoefficient_#in~k#1; 1805#L30 call binomialCoefficient_#t~ret1#1 := fact(binomialCoefficient_~n#1);< 1840#factENTRY ~n := #in~n; 1841#L25 assume !(~n <= 0); 1849#L26 call #t~ret0 := fact(~n - 1);< 1850#factENTRY ~n := #in~n; 1905#L25 assume ~n <= 0;#res := 1; 1904#factFINAL assume true; 1900#factEXIT >#66#return; 1903#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 1909#factFINAL assume true; 1908#factEXIT >#68#return; 1804#L30-1 call binomialCoefficient_#t~ret2#1 := fact(binomialCoefficient_~k#1);< 1840#factENTRY ~n := #in~n; 1841#L25 assume !(~n <= 0); 1849#L26 call #t~ret0 := fact(~n - 1);< 1850#factENTRY ~n := #in~n; 1905#L25 assume ~n <= 0;#res := 1; 1904#factFINAL assume true; 1900#factEXIT >#66#return; 1903#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 1909#factFINAL assume true; 1908#factEXIT >#70#return; 1801#L30-2 call binomialCoefficient_#t~ret3#1 := fact(binomialCoefficient_~n#1 - binomialCoefficient_~k#1);< 1840#factENTRY ~n := #in~n; 1841#L25 assume ~n <= 0;#res := 1; 1828#factFINAL assume true; 1795#factEXIT >#72#return; 1809#L30-3 binomialCoefficient_#res#1 := (if binomialCoefficient_#t~ret1#1 < 0 && 0 != binomialCoefficient_#t~ret1#1 % (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) then (if binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1 < 0 then binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) - 1 else 1 + binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1)) else binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1));havoc binomialCoefficient_#t~ret1#1;havoc binomialCoefficient_#t~ret2#1;havoc binomialCoefficient_#t~ret3#1; 1923#L30-4 main_#t~ret9#1 := binomialCoefficient_#res#1;assume { :end_inline_binomialCoefficient } true;havoc main_#t~ret9#1; 1922#L42-2 main_#t~post8#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post8#1;havoc main_#t~post8#1; 1921#L42-3 assume !!(main_~k~0#1 <= main_~x~0#1); 1888#L43 assume !(main_~k~0#1 <= main_~n~0#1);assume { :begin_inline_binomialCoefficient } true;binomialCoefficient_#in~n#1, binomialCoefficient_#in~k#1 := main_~k~0#1, main_~n~0#1;havoc binomialCoefficient_#res#1;havoc binomialCoefficient_#t~ret1#1, binomialCoefficient_#t~ret2#1, binomialCoefficient_#t~ret3#1, binomialCoefficient_~n#1, binomialCoefficient_~k#1;binomialCoefficient_~n#1 := binomialCoefficient_#in~n#1;binomialCoefficient_~k#1 := binomialCoefficient_#in~k#1; 1798#L30-5 call binomialCoefficient_#t~ret1#1 := fact(binomialCoefficient_~n#1);< 1840#factENTRY ~n := #in~n; 1841#L25 assume !(~n <= 0); 1849#L26 call #t~ret0 := fact(~n - 1);< 1850#factENTRY ~n := #in~n; 1905#L25 assume ~n <= 0;#res := 1; 1904#factFINAL assume true; 1900#factEXIT >#66#return; 1903#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 1909#factFINAL assume true; 1908#factEXIT >#74#return; 1802#L30-6 call binomialCoefficient_#t~ret2#1 := fact(binomialCoefficient_~k#1);< 1840#factENTRY ~n := #in~n; 1841#L25 assume ~n <= 0;#res := 1; 1828#factFINAL assume true; 1795#factEXIT >#76#return; 1800#L30-7 call binomialCoefficient_#t~ret3#1 := fact(binomialCoefficient_~n#1 - binomialCoefficient_~k#1);< 1840#factENTRY ~n := #in~n; 1841#L25 assume !(~n <= 0); 1849#L26 call #t~ret0 := fact(~n - 1);< 1850#factENTRY ~n := #in~n; 1905#L25 assume ~n <= 0;#res := 1; 1904#factFINAL assume true; 1900#factEXIT >#66#return; 1903#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 1909#factFINAL assume true; 1908#factEXIT >#78#return; 1907#L30-8 binomialCoefficient_#res#1 := (if binomialCoefficient_#t~ret1#1 < 0 && 0 != binomialCoefficient_#t~ret1#1 % (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) then (if binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1 < 0 then binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) - 1 else 1 + binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1)) else binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1));havoc binomialCoefficient_#t~ret1#1;havoc binomialCoefficient_#t~ret2#1;havoc binomialCoefficient_#t~ret3#1; 1906#L30-9 main_#t~ret10#1 := binomialCoefficient_#res#1;assume { :end_inline_binomialCoefficient } true;havoc main_#t~ret10#1; 1889#L42-2 main_#t~post8#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post8#1;havoc main_#t~post8#1; 1887#L42-3 assume !(main_~k~0#1 <= main_~x~0#1); 1863#L41-2 main_#t~post7#1 := main_~n~0#1;main_~n~0#1 := 1 + main_#t~post7#1;havoc main_#t~post7#1; 1855#L41-3 assume !!(main_~n~0#1 <= main_~x~0#1);main_~k~0#1 := 0; 1856#L42-3 [2022-10-17 10:15:10,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:10,745 INFO L85 PathProgramCache]: Analyzing trace with hash 36330292, now seen corresponding path program 2 times [2022-10-17 10:15:10,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:10,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623288434] [2022-10-17 10:15:10,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:10,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:10,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:15:10,748 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:15:10,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:15:10,752 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:15:10,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:10,753 INFO L85 PathProgramCache]: Analyzing trace with hash 885226027, now seen corresponding path program 1 times [2022-10-17 10:15:10,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:10,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296780785] [2022-10-17 10:15:10,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:10,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:10,771 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:15:10,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1855235377] [2022-10-17 10:15:10,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:10,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:15:10,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:10,781 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:15:10,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-10-17 10:15:10,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:10,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-17 10:15:10,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:10,946 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 184 proven. 7 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-10-17 10:15:10,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:15:11,115 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 16 proven. 105 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2022-10-17 10:15:11,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:15:11,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296780785] [2022-10-17 10:15:11,115 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:15:11,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855235377] [2022-10-17 10:15:11,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855235377] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:15:11,116 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:15:11,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-10-17 10:15:11,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423080662] [2022-10-17 10:15:11,116 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:15:11,117 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-10-17 10:15:11,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:15:11,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-17 10:15:11,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:15:11,118 INFO L87 Difference]: Start difference. First operand 153 states and 236 transitions. cyclomatic complexity: 88 Second operand has 11 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 6 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) [2022-10-17 10:15:11,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:11,373 INFO L93 Difference]: Finished difference Result 285 states and 408 transitions. [2022-10-17 10:15:11,373 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 285 states and 408 transitions. [2022-10-17 10:15:11,378 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 105 [2022-10-17 10:15:11,383 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 285 states to 285 states and 408 transitions. [2022-10-17 10:15:11,383 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 140 [2022-10-17 10:15:11,384 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 140 [2022-10-17 10:15:11,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 285 states and 408 transitions. [2022-10-17 10:15:11,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-10-17 10:15:11,385 INFO L218 hiAutomatonCegarLoop]: Abstraction has 285 states and 408 transitions. [2022-10-17 10:15:11,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states and 408 transitions. [2022-10-17 10:15:11,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 165. [2022-10-17 10:15:11,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 105 states have (on average 1.1428571428571428) internal successors, (120), 106 states have internal predecessors, (120), 50 states have call successors, (50), 10 states have call predecessors, (50), 10 states have return successors, (82), 48 states have call predecessors, (82), 50 states have call successors, (82) [2022-10-17 10:15:11,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 252 transitions. [2022-10-17 10:15:11,406 INFO L240 hiAutomatonCegarLoop]: Abstraction has 165 states and 252 transitions. [2022-10-17 10:15:11,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:15:11,407 INFO L428 stractBuchiCegarLoop]: Abstraction has 165 states and 252 transitions. [2022-10-17 10:15:11,407 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2022-10-17 10:15:11,407 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 165 states and 252 transitions. [2022-10-17 10:15:11,409 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2022-10-17 10:15:11,409 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:15:11,409 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:15:11,411 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-10-17 10:15:11,411 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [17, 17, 9, 8, 8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:11,411 INFO L748 eck$LassoCheckResult]: Stem: 2870#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 2846#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~ret9#1, main_#t~ret10#1, main_#t~post8#1, main_~k~0#1, main_#t~post7#1, main_~n~0#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 2847#L35 assume !(main_~x~0#1 < 0);main_~y~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 2869#L38 assume !(main_~y~0#1 < 0);main_~z~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~n~0#1 := 0; 2891#L41-3 assume !!(main_~n~0#1 <= main_~x~0#1);main_~k~0#1 := 0; 2860#L42-3 [2022-10-17 10:15:11,412 INFO L750 eck$LassoCheckResult]: Loop: 2860#L42-3 assume !!(main_~k~0#1 <= main_~x~0#1); 2923#L43 assume main_~k~0#1 <= main_~n~0#1;assume { :begin_inline_binomialCoefficient } true;binomialCoefficient_#in~n#1, binomialCoefficient_#in~k#1 := main_~n~0#1, main_~k~0#1;havoc binomialCoefficient_#res#1;havoc binomialCoefficient_#t~ret1#1, binomialCoefficient_#t~ret2#1, binomialCoefficient_#t~ret3#1, binomialCoefficient_~n#1, binomialCoefficient_~k#1;binomialCoefficient_~n#1 := binomialCoefficient_#in~n#1;binomialCoefficient_~k#1 := binomialCoefficient_#in~k#1; 2903#L30 call binomialCoefficient_#t~ret1#1 := fact(binomialCoefficient_~n#1);< 2913#factENTRY ~n := #in~n; 2922#L25 assume !(~n <= 0); 2916#L26 call #t~ret0 := fact(~n - 1);< 2853#factENTRY ~n := #in~n; 2925#L25 assume ~n <= 0;#res := 1; 2924#factFINAL assume true; 2915#factEXIT >#66#return; 2914#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 2912#factFINAL assume true; 2900#factEXIT >#68#return; 2904#L30-1 call binomialCoefficient_#t~ret2#1 := fact(binomialCoefficient_~k#1);< 2913#factENTRY ~n := #in~n; 2922#L25 assume ~n <= 0;#res := 1; 2921#factFINAL assume true; 2920#factEXIT >#70#return; 2908#L30-2 call binomialCoefficient_#t~ret3#1 := fact(binomialCoefficient_~n#1 - binomialCoefficient_~k#1);< 2911#factENTRY ~n := #in~n; 2919#L25 assume !(~n <= 0); 2916#L26 call #t~ret0 := fact(~n - 1);< 2853#factENTRY ~n := #in~n; 2925#L25 assume ~n <= 0;#res := 1; 2924#factFINAL assume true; 2915#factEXIT >#66#return; 2914#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 2912#factFINAL assume true; 2900#factEXIT >#72#return; 2910#L30-3 binomialCoefficient_#res#1 := (if binomialCoefficient_#t~ret1#1 < 0 && 0 != binomialCoefficient_#t~ret1#1 % (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) then (if binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1 < 0 then binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) - 1 else 1 + binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1)) else binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1));havoc binomialCoefficient_#t~ret1#1;havoc binomialCoefficient_#t~ret2#1;havoc binomialCoefficient_#t~ret3#1; 2929#L30-4 main_#t~ret9#1 := binomialCoefficient_#res#1;assume { :end_inline_binomialCoefficient } true;havoc main_#t~ret9#1; 2928#L42-2 main_#t~post8#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post8#1;havoc main_#t~post8#1; 2927#L42-3 assume !!(main_~k~0#1 <= main_~x~0#1); 2926#L43 assume main_~k~0#1 <= main_~n~0#1;assume { :begin_inline_binomialCoefficient } true;binomialCoefficient_#in~n#1, binomialCoefficient_#in~k#1 := main_~n~0#1, main_~k~0#1;havoc binomialCoefficient_#res#1;havoc binomialCoefficient_#t~ret1#1, binomialCoefficient_#t~ret2#1, binomialCoefficient_#t~ret3#1, binomialCoefficient_~n#1, binomialCoefficient_~k#1;binomialCoefficient_~n#1 := binomialCoefficient_#in~n#1;binomialCoefficient_~k#1 := binomialCoefficient_#in~k#1; 2907#L30 call binomialCoefficient_#t~ret1#1 := fact(binomialCoefficient_~n#1);< 2913#factENTRY ~n := #in~n; 2922#L25 assume !(~n <= 0); 2916#L26 call #t~ret0 := fact(~n - 1);< 2853#factENTRY ~n := #in~n; 2925#L25 assume ~n <= 0;#res := 1; 2924#factFINAL assume true; 2915#factEXIT >#66#return; 2914#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 2912#factFINAL assume true; 2900#factEXIT >#68#return; 2905#L30-1 call binomialCoefficient_#t~ret2#1 := fact(binomialCoefficient_~k#1);< 2913#factENTRY ~n := #in~n; 2922#L25 assume !(~n <= 0); 2916#L26 call #t~ret0 := fact(~n - 1);< 2853#factENTRY ~n := #in~n; 2925#L25 assume ~n <= 0;#res := 1; 2924#factFINAL assume true; 2915#factEXIT >#66#return; 2914#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 2912#factFINAL assume true; 2900#factEXIT >#70#return; 2906#L30-2 call binomialCoefficient_#t~ret3#1 := fact(binomialCoefficient_~n#1 - binomialCoefficient_~k#1);< 2913#factENTRY ~n := #in~n; 2922#L25 assume !(~n <= 0); 2916#L26 call #t~ret0 := fact(~n - 1);< 2853#factENTRY ~n := #in~n; 2925#L25 assume ~n <= 0;#res := 1; 2924#factFINAL assume true; 2915#factEXIT >#66#return; 2914#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 2912#factFINAL assume true; 2900#factEXIT >#72#return; 2909#L30-3 binomialCoefficient_#res#1 := (if binomialCoefficient_#t~ret1#1 < 0 && 0 != binomialCoefficient_#t~ret1#1 % (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) then (if binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1 < 0 then binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) - 1 else 1 + binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1)) else binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1));havoc binomialCoefficient_#t~ret1#1;havoc binomialCoefficient_#t~ret2#1;havoc binomialCoefficient_#t~ret3#1; 2937#L30-4 main_#t~ret9#1 := binomialCoefficient_#res#1;assume { :end_inline_binomialCoefficient } true;havoc main_#t~ret9#1; 2936#L42-2 main_#t~post8#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post8#1;havoc main_#t~post8#1; 2935#L42-3 assume !!(main_~k~0#1 <= main_~x~0#1); 2894#L43 assume !(main_~k~0#1 <= main_~n~0#1);assume { :begin_inline_binomialCoefficient } true;binomialCoefficient_#in~n#1, binomialCoefficient_#in~k#1 := main_~k~0#1, main_~n~0#1;havoc binomialCoefficient_#res#1;havoc binomialCoefficient_#t~ret1#1, binomialCoefficient_#t~ret2#1, binomialCoefficient_#t~ret3#1, binomialCoefficient_~n#1, binomialCoefficient_~k#1;binomialCoefficient_~n#1 := binomialCoefficient_#in~n#1;binomialCoefficient_~k#1 := binomialCoefficient_#in~k#1; 2896#L30-5 call binomialCoefficient_#t~ret1#1 := fact(binomialCoefficient_~n#1);< 2913#factENTRY ~n := #in~n; 2922#L25 assume !(~n <= 0); 2916#L26 call #t~ret0 := fact(~n - 1);< 2853#factENTRY ~n := #in~n; 2925#L25 assume ~n <= 0;#res := 1; 2924#factFINAL assume true; 2915#factEXIT >#66#return; 2914#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 2912#factFINAL assume true; 2900#factEXIT >#74#return; 2901#L30-6 call binomialCoefficient_#t~ret2#1 := fact(binomialCoefficient_~k#1);< 2913#factENTRY ~n := #in~n; 2922#L25 assume !(~n <= 0); 2916#L26 call #t~ret0 := fact(~n - 1);< 2853#factENTRY ~n := #in~n; 2925#L25 assume ~n <= 0;#res := 1; 2924#factFINAL assume true; 2915#factEXIT >#66#return; 2914#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 2912#factFINAL assume true; 2900#factEXIT >#76#return; 2902#L30-7 call binomialCoefficient_#t~ret3#1 := fact(binomialCoefficient_~n#1 - binomialCoefficient_~k#1);< 2911#factENTRY ~n := #in~n; 2919#L25 assume !(~n <= 0); 2916#L26 call #t~ret0 := fact(~n - 1);< 2853#factENTRY ~n := #in~n; 2925#L25 assume ~n <= 0;#res := 1; 2924#factFINAL assume true; 2915#factEXIT >#66#return; 2914#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 2912#factFINAL assume true; 2900#factEXIT >#78#return; 2899#L30-8 binomialCoefficient_#res#1 := (if binomialCoefficient_#t~ret1#1 < 0 && 0 != binomialCoefficient_#t~ret1#1 % (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) then (if binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1 < 0 then binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) - 1 else 1 + binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1)) else binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1));havoc binomialCoefficient_#t~ret1#1;havoc binomialCoefficient_#t~ret2#1;havoc binomialCoefficient_#t~ret3#1; 2898#L30-9 main_#t~ret10#1 := binomialCoefficient_#res#1;assume { :end_inline_binomialCoefficient } true;havoc main_#t~ret10#1; 2897#L42-2 main_#t~post8#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post8#1;havoc main_#t~post8#1; 2893#L42-3 assume !(main_~k~0#1 <= main_~x~0#1); 2867#L41-2 main_#t~post7#1 := main_~n~0#1;main_~n~0#1 := 1 + main_#t~post7#1;havoc main_#t~post7#1; 2859#L41-3 assume !!(main_~n~0#1 <= main_~x~0#1);main_~k~0#1 := 0; 2860#L42-3 [2022-10-17 10:15:11,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:11,413 INFO L85 PathProgramCache]: Analyzing trace with hash 36330292, now seen corresponding path program 3 times [2022-10-17 10:15:11,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:11,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377859217] [2022-10-17 10:15:11,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:11,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:15:11,417 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:15:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:15:11,420 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:15:11,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:11,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1877972557, now seen corresponding path program 2 times [2022-10-17 10:15:11,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:11,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288474952] [2022-10-17 10:15:11,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:11,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:11,432 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:15:11,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1431172778] [2022-10-17 10:15:11,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:15:11,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:15:11,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:11,434 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:15:11,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-10-17 10:15:11,503 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-17 10:15:11,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:15:11,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 17 conjunts are in the unsatisfiable core [2022-10-17 10:15:11,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:11,646 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 355 proven. 48 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2022-10-17 10:15:11,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:15:11,969 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 61 proven. 115 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2022-10-17 10:15:11,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:15:11,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288474952] [2022-10-17 10:15:11,969 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:15:11,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431172778] [2022-10-17 10:15:11,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431172778] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:15:11,970 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:15:11,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 15 [2022-10-17 10:15:11,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888462819] [2022-10-17 10:15:11,970 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:15:11,971 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-10-17 10:15:11,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:15:11,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-17 10:15:11,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-10-17 10:15:11,972 INFO L87 Difference]: Start difference. First operand 165 states and 252 transitions. cyclomatic complexity: 92 Second operand has 15 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 15 states have internal predecessors, (44), 8 states have call successors, (20), 2 states have call predecessors, (20), 5 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2022-10-17 10:15:12,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:12,411 INFO L93 Difference]: Finished difference Result 300 states and 489 transitions. [2022-10-17 10:15:12,411 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 300 states and 489 transitions. [2022-10-17 10:15:12,417 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 93 [2022-10-17 10:15:12,423 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 300 states to 288 states and 477 transitions. [2022-10-17 10:15:12,423 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 145 [2022-10-17 10:15:12,424 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 145 [2022-10-17 10:15:12,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 288 states and 477 transitions. [2022-10-17 10:15:12,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-10-17 10:15:12,424 INFO L218 hiAutomatonCegarLoop]: Abstraction has 288 states and 477 transitions. [2022-10-17 10:15:12,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states and 477 transitions. [2022-10-17 10:15:12,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 251. [2022-10-17 10:15:12,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 163 states have (on average 1.116564417177914) internal successors, (182), 162 states have internal predecessors, (182), 72 states have call successors, (72), 14 states have call predecessors, (72), 16 states have return successors, (178), 74 states have call predecessors, (178), 72 states have call successors, (178) [2022-10-17 10:15:12,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 432 transitions. [2022-10-17 10:15:12,450 INFO L240 hiAutomatonCegarLoop]: Abstraction has 251 states and 432 transitions. [2022-10-17 10:15:12,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-17 10:15:12,452 INFO L428 stractBuchiCegarLoop]: Abstraction has 251 states and 432 transitions. [2022-10-17 10:15:12,452 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2022-10-17 10:15:12,452 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 251 states and 432 transitions. [2022-10-17 10:15:12,455 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 85 [2022-10-17 10:15:12,455 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:15:12,455 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:15:12,457 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-10-17 10:15:12,463 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [20, 20, 11, 11, 11, 11, 9, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:12,464 INFO L748 eck$LassoCheckResult]: Stem: 4034#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 4009#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~ret9#1, main_#t~ret10#1, main_#t~post8#1, main_~k~0#1, main_#t~post7#1, main_~n~0#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 4010#L35 assume !(main_~x~0#1 < 0);main_~y~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 4033#L38 assume !(main_~y~0#1 < 0);main_~z~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~n~0#1 := 0; 4050#L41-3 assume !!(main_~n~0#1 <= main_~x~0#1);main_~k~0#1 := 0; 4021#L42-3 [2022-10-17 10:15:12,464 INFO L750 eck$LassoCheckResult]: Loop: 4021#L42-3 assume !!(main_~k~0#1 <= main_~x~0#1); 4097#L43 assume main_~k~0#1 <= main_~n~0#1;assume { :begin_inline_binomialCoefficient } true;binomialCoefficient_#in~n#1, binomialCoefficient_#in~k#1 := main_~n~0#1, main_~k~0#1;havoc binomialCoefficient_#res#1;havoc binomialCoefficient_#t~ret1#1, binomialCoefficient_#t~ret2#1, binomialCoefficient_#t~ret3#1, binomialCoefficient_~n#1, binomialCoefficient_~k#1;binomialCoefficient_~n#1 := binomialCoefficient_#in~n#1;binomialCoefficient_~k#1 := binomialCoefficient_#in~k#1; 4079#L30 call binomialCoefficient_#t~ret1#1 := fact(binomialCoefficient_~n#1);< 3964#factENTRY ~n := #in~n; 4151#L25 assume !(~n <= 0); 3970#L26 call #t~ret0 := fact(~n - 1);< 4015#factENTRY ~n := #in~n; 4115#L25 assume !(~n <= 0); 3968#L26 call #t~ret0 := fact(~n - 1);< 4015#factENTRY ~n := #in~n; 4115#L25 assume ~n <= 0;#res := 1; 4114#factFINAL assume true; 4112#factEXIT >#66#return; 3971#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 3987#factFINAL assume true; 3967#factEXIT >#66#return; 3972#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 4109#factFINAL assume true; 4107#factEXIT >#68#return; 4083#L30-1 call binomialCoefficient_#t~ret2#1 := fact(binomialCoefficient_~k#1);< 3964#factENTRY ~n := #in~n; 4151#L25 assume ~n <= 0;#res := 1; 4094#factFINAL assume true; 4090#factEXIT >#70#return; 3981#L30-2 call binomialCoefficient_#t~ret3#1 := fact(binomialCoefficient_~n#1 - binomialCoefficient_~k#1);< 3982#factENTRY ~n := #in~n; 4150#L25 assume !(~n <= 0); 3970#L26 call #t~ret0 := fact(~n - 1);< 4015#factENTRY ~n := #in~n; 4115#L25 assume ~n <= 0;#res := 1; 4114#factFINAL assume true; 4112#factEXIT >#66#return; 4111#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 4110#factFINAL assume true; 4077#factEXIT >#72#return; 4086#L30-3 binomialCoefficient_#res#1 := (if binomialCoefficient_#t~ret1#1 < 0 && 0 != binomialCoefficient_#t~ret1#1 % (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) then (if binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1 < 0 then binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) - 1 else 1 + binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1)) else binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1));havoc binomialCoefficient_#t~ret1#1;havoc binomialCoefficient_#t~ret2#1;havoc binomialCoefficient_#t~ret3#1; 4166#L30-4 main_#t~ret9#1 := binomialCoefficient_#res#1;assume { :end_inline_binomialCoefficient } true;havoc main_#t~ret9#1; 4155#L42-2 main_#t~post8#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post8#1;havoc main_#t~post8#1; 4156#L42-3 assume !!(main_~k~0#1 <= main_~x~0#1); 4035#L43 assume main_~k~0#1 <= main_~n~0#1;assume { :begin_inline_binomialCoefficient } true;binomialCoefficient_#in~n#1, binomialCoefficient_#in~k#1 := main_~n~0#1, main_~k~0#1;havoc binomialCoefficient_#res#1;havoc binomialCoefficient_#t~ret1#1, binomialCoefficient_#t~ret2#1, binomialCoefficient_#t~ret3#1, binomialCoefficient_~n#1, binomialCoefficient_~k#1;binomialCoefficient_~n#1 := binomialCoefficient_#in~n#1;binomialCoefficient_~k#1 := binomialCoefficient_#in~k#1; 3985#L30 call binomialCoefficient_#t~ret1#1 := fact(binomialCoefficient_~n#1);< 3964#factENTRY ~n := #in~n; 4151#L25 assume !(~n <= 0); 3970#L26 call #t~ret0 := fact(~n - 1);< 4015#factENTRY ~n := #in~n; 4115#L25 assume !(~n <= 0); 3968#L26 call #t~ret0 := fact(~n - 1);< 4015#factENTRY ~n := #in~n; 4115#L25 assume ~n <= 0;#res := 1; 4114#factFINAL assume true; 4112#factEXIT >#66#return; 3971#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 3987#factFINAL assume true; 3967#factEXIT >#66#return; 3972#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 4109#factFINAL assume true; 4107#factEXIT >#68#return; 4046#L30-1 call binomialCoefficient_#t~ret2#1 := fact(binomialCoefficient_~k#1);< 3964#factENTRY ~n := #in~n; 4151#L25 assume !(~n <= 0); 3970#L26 call #t~ret0 := fact(~n - 1);< 4015#factENTRY ~n := #in~n; 4115#L25 assume !(~n <= 0); 3968#L26 call #t~ret0 := fact(~n - 1);< 4015#factENTRY ~n := #in~n; 4115#L25 assume ~n <= 0;#res := 1; 4114#factFINAL assume true; 4112#factEXIT >#66#return; 3971#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 3987#factFINAL assume true; 3967#factEXIT >#66#return; 3972#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 4109#factFINAL assume true; 4107#factEXIT >#70#return; 4087#L30-2 call binomialCoefficient_#t~ret3#1 := fact(binomialCoefficient_~n#1 - binomialCoefficient_~k#1);< 4095#factENTRY ~n := #in~n; 4096#L25 assume ~n <= 0;#res := 1; 4094#factFINAL assume true; 4090#factEXIT >#72#return; 4088#L30-3 binomialCoefficient_#res#1 := (if binomialCoefficient_#t~ret1#1 < 0 && 0 != binomialCoefficient_#t~ret1#1 % (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) then (if binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1 < 0 then binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) - 1 else 1 + binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1)) else binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1));havoc binomialCoefficient_#t~ret1#1;havoc binomialCoefficient_#t~ret2#1;havoc binomialCoefficient_#t~ret3#1; 4198#L30-4 main_#t~ret9#1 := binomialCoefficient_#res#1;assume { :end_inline_binomialCoefficient } true;havoc main_#t~ret9#1; 4168#L42-2 main_#t~post8#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post8#1;havoc main_#t~post8#1; 4167#L42-3 assume !!(main_~k~0#1 <= main_~x~0#1); 4054#L43 assume !(main_~k~0#1 <= main_~n~0#1);assume { :begin_inline_binomialCoefficient } true;binomialCoefficient_#in~n#1, binomialCoefficient_#in~k#1 := main_~k~0#1, main_~n~0#1;havoc binomialCoefficient_#res#1;havoc binomialCoefficient_#t~ret1#1, binomialCoefficient_#t~ret2#1, binomialCoefficient_#t~ret3#1, binomialCoefficient_~n#1, binomialCoefficient_~k#1;binomialCoefficient_~n#1 := binomialCoefficient_#in~n#1;binomialCoefficient_~k#1 := binomialCoefficient_#in~k#1; 3963#L30-5 call binomialCoefficient_#t~ret1#1 := fact(binomialCoefficient_~n#1);< 3964#factENTRY ~n := #in~n; 4151#L25 assume !(~n <= 0); 3970#L26 call #t~ret0 := fact(~n - 1);< 4015#factENTRY ~n := #in~n; 4115#L25 assume !(~n <= 0); 3968#L26 call #t~ret0 := fact(~n - 1);< 4015#factENTRY ~n := #in~n; 4115#L25 assume ~n <= 0;#res := 1; 4114#factFINAL assume true; 4112#factEXIT >#66#return; 3971#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 3987#factFINAL assume true; 3967#factEXIT >#66#return; 3972#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 4109#factFINAL assume true; 4107#factEXIT >#74#return; 4080#L30-6 call binomialCoefficient_#t~ret2#1 := fact(binomialCoefficient_~k#1);< 3964#factENTRY ~n := #in~n; 4151#L25 assume ~n <= 0;#res := 1; 4094#factFINAL assume true; 4090#factEXIT >#76#return; 4051#L30-7 call binomialCoefficient_#t~ret3#1 := fact(binomialCoefficient_~n#1 - binomialCoefficient_~k#1);< 3982#factENTRY ~n := #in~n; 4150#L25 assume !(~n <= 0); 3970#L26 call #t~ret0 := fact(~n - 1);< 4015#factENTRY ~n := #in~n; 4115#L25 assume !(~n <= 0); 3968#L26 call #t~ret0 := fact(~n - 1);< 4015#factENTRY ~n := #in~n; 4115#L25 assume ~n <= 0;#res := 1; 4114#factFINAL assume true; 4112#factEXIT >#66#return; 3971#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 3987#factFINAL assume true; 3967#factEXIT >#66#return; 3972#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 4109#factFINAL assume true; 4107#factEXIT >#78#return; 4011#L30-8 binomialCoefficient_#res#1 := (if binomialCoefficient_#t~ret1#1 < 0 && 0 != binomialCoefficient_#t~ret1#1 % (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) then (if binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1 < 0 then binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) - 1 else 1 + binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1)) else binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1));havoc binomialCoefficient_#t~ret1#1;havoc binomialCoefficient_#t~ret2#1;havoc binomialCoefficient_#t~ret3#1; 4012#L30-9 main_#t~ret10#1 := binomialCoefficient_#res#1;assume { :end_inline_binomialCoefficient } true;havoc main_#t~ret10#1; 4055#L42-2 main_#t~post8#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post8#1;havoc main_#t~post8#1; 4053#L42-3 assume !(main_~k~0#1 <= main_~x~0#1); 4030#L41-2 main_#t~post7#1 := main_~n~0#1;main_~n~0#1 := 1 + main_#t~post7#1;havoc main_#t~post7#1; 4020#L41-3 assume !!(main_~n~0#1 <= main_~x~0#1);main_~k~0#1 := 0; 4021#L42-3 [2022-10-17 10:15:12,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:12,465 INFO L85 PathProgramCache]: Analyzing trace with hash 36330292, now seen corresponding path program 4 times [2022-10-17 10:15:12,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:12,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499025597] [2022-10-17 10:15:12,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:12,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:12,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:15:12,471 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:15:12,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:15:12,476 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:15:12,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:12,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1233557403, now seen corresponding path program 3 times [2022-10-17 10:15:12,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:12,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755871951] [2022-10-17 10:15:12,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:12,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:12,503 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:15:12,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1381825958] [2022-10-17 10:15:12,503 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-17 10:15:12,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:15:12,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:12,505 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:15:12,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-10-17 10:15:12,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-10-17 10:15:12,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:15:12,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-17 10:15:12,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:12,664 INFO L134 CoverageAnalysis]: Checked inductivity of 887 backedges. 160 proven. 3 refuted. 0 times theorem prover too weak. 724 trivial. 0 not checked. [2022-10-17 10:15:12,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:15:12,930 INFO L134 CoverageAnalysis]: Checked inductivity of 887 backedges. 160 proven. 4 refuted. 0 times theorem prover too weak. 723 trivial. 0 not checked. [2022-10-17 10:15:12,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:15:12,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755871951] [2022-10-17 10:15:12,931 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:15:12,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381825958] [2022-10-17 10:15:12,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381825958] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:15:12,931 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:15:12,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 10 [2022-10-17 10:15:12,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118332186] [2022-10-17 10:15:12,932 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:15:12,932 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-10-17 10:15:12,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:15:12,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 10:15:12,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:15:12,934 INFO L87 Difference]: Start difference. First operand 251 states and 432 transitions. cyclomatic complexity: 188 Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 6 states have call successors, (13), 1 states have call predecessors, (13), 3 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-10-17 10:15:13,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:13,152 INFO L93 Difference]: Finished difference Result 305 states and 530 transitions. [2022-10-17 10:15:13,152 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 305 states and 530 transitions. [2022-10-17 10:15:13,158 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 109 [2022-10-17 10:15:13,164 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 305 states to 305 states and 530 transitions. [2022-10-17 10:15:13,164 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 153 [2022-10-17 10:15:13,165 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 153 [2022-10-17 10:15:13,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 305 states and 530 transitions. [2022-10-17 10:15:13,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-10-17 10:15:13,165 INFO L218 hiAutomatonCegarLoop]: Abstraction has 305 states and 530 transitions. [2022-10-17 10:15:13,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states and 530 transitions. [2022-10-17 10:15:13,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 269. [2022-10-17 10:15:13,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 169 states have (on average 1.136094674556213) internal successors, (192), 172 states have internal predecessors, (192), 84 states have call successors, (84), 14 states have call predecessors, (84), 16 states have return successors, (206), 82 states have call predecessors, (206), 84 states have call successors, (206) [2022-10-17 10:15:13,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 482 transitions. [2022-10-17 10:15:13,182 INFO L240 hiAutomatonCegarLoop]: Abstraction has 269 states and 482 transitions. [2022-10-17 10:15:13,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:15:13,183 INFO L428 stractBuchiCegarLoop]: Abstraction has 269 states and 482 transitions. [2022-10-17 10:15:13,184 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2022-10-17 10:15:13,184 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 269 states and 482 transitions. [2022-10-17 10:15:13,186 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 95 [2022-10-17 10:15:13,187 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:15:13,187 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:15:13,189 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-10-17 10:15:13,189 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [24, 24, 15, 15, 15, 15, 9, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:13,189 INFO L748 eck$LassoCheckResult]: Stem: 5382#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 5359#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~ret9#1, main_#t~ret10#1, main_#t~post8#1, main_~k~0#1, main_#t~post7#1, main_~n~0#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 5360#L35 assume !(main_~x~0#1 < 0);main_~y~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 5381#L38 assume !(main_~y~0#1 < 0);main_~z~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~n~0#1 := 0; 5395#L41-3 assume !!(main_~n~0#1 <= main_~x~0#1);main_~k~0#1 := 0; 5370#L42-3 [2022-10-17 10:15:13,190 INFO L750 eck$LassoCheckResult]: Loop: 5370#L42-3 assume !!(main_~k~0#1 <= main_~x~0#1); 5448#L43 assume main_~k~0#1 <= main_~n~0#1;assume { :begin_inline_binomialCoefficient } true;binomialCoefficient_#in~n#1, binomialCoefficient_#in~k#1 := main_~n~0#1, main_~k~0#1;havoc binomialCoefficient_#res#1;havoc binomialCoefficient_#t~ret1#1, binomialCoefficient_#t~ret2#1, binomialCoefficient_#t~ret3#1, binomialCoefficient_~n#1, binomialCoefficient_~k#1;binomialCoefficient_~n#1 := binomialCoefficient_#in~n#1;binomialCoefficient_~k#1 := binomialCoefficient_#in~k#1; 5410#L30 call binomialCoefficient_#t~ret1#1 := fact(binomialCoefficient_~n#1);< 5426#factENTRY ~n := #in~n; 5463#L25 assume !(~n <= 0); 5317#L26 call #t~ret0 := fact(~n - 1);< 5365#factENTRY ~n := #in~n; 5466#L25 assume !(~n <= 0); 5315#L26 call #t~ret0 := fact(~n - 1);< 5365#factENTRY ~n := #in~n; 5466#L25 assume ~n <= 0;#res := 1; 5465#factFINAL assume true; 5461#factEXIT >#66#return; 5318#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 5330#factFINAL assume true; 5314#factEXIT >#66#return; 5319#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 5424#factFINAL assume true; 5425#factEXIT >#68#return; 5418#L30-1 call binomialCoefficient_#t~ret2#1 := fact(binomialCoefficient_~k#1);< 5426#factENTRY ~n := #in~n; 5463#L25 assume ~n <= 0;#res := 1; 5445#factFINAL assume true; 5444#factEXIT >#70#return; 5416#L30-2 call binomialCoefficient_#t~ret3#1 := fact(binomialCoefficient_~n#1 - binomialCoefficient_~k#1);< 5423#factENTRY ~n := #in~n; 5464#L25 assume !(~n <= 0); 5317#L26 call #t~ret0 := fact(~n - 1);< 5365#factENTRY ~n := #in~n; 5466#L25 assume !(~n <= 0); 5315#L26 call #t~ret0 := fact(~n - 1);< 5365#factENTRY ~n := #in~n; 5466#L25 assume ~n <= 0;#res := 1; 5465#factFINAL assume true; 5461#factEXIT >#66#return; 5318#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 5330#factFINAL assume true; 5314#factEXIT >#66#return; 5319#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 5424#factFINAL assume true; 5425#factEXIT >#72#return; 5458#L30-3 binomialCoefficient_#res#1 := (if binomialCoefficient_#t~ret1#1 < 0 && 0 != binomialCoefficient_#t~ret1#1 % (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) then (if binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1 < 0 then binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) - 1 else 1 + binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1)) else binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1));havoc binomialCoefficient_#t~ret1#1;havoc binomialCoefficient_#t~ret2#1;havoc binomialCoefficient_#t~ret3#1; 5456#L30-4 main_#t~ret9#1 := binomialCoefficient_#res#1;assume { :end_inline_binomialCoefficient } true;havoc main_#t~ret9#1; 5454#L42-2 main_#t~post8#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post8#1;havoc main_#t~post8#1; 5452#L42-3 assume !!(main_~k~0#1 <= main_~x~0#1); 5450#L43 assume main_~k~0#1 <= main_~n~0#1;assume { :begin_inline_binomialCoefficient } true;binomialCoefficient_#in~n#1, binomialCoefficient_#in~k#1 := main_~n~0#1, main_~k~0#1;havoc binomialCoefficient_#res#1;havoc binomialCoefficient_#t~ret1#1, binomialCoefficient_#t~ret2#1, binomialCoefficient_#t~ret3#1, binomialCoefficient_~n#1, binomialCoefficient_~k#1;binomialCoefficient_~n#1 := binomialCoefficient_#in~n#1;binomialCoefficient_~k#1 := binomialCoefficient_#in~k#1; 5411#L30 call binomialCoefficient_#t~ret1#1 := fact(binomialCoefficient_~n#1);< 5426#factENTRY ~n := #in~n; 5463#L25 assume !(~n <= 0); 5317#L26 call #t~ret0 := fact(~n - 1);< 5365#factENTRY ~n := #in~n; 5466#L25 assume !(~n <= 0); 5315#L26 call #t~ret0 := fact(~n - 1);< 5365#factENTRY ~n := #in~n; 5466#L25 assume ~n <= 0;#res := 1; 5465#factFINAL assume true; 5461#factEXIT >#66#return; 5318#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 5330#factFINAL assume true; 5314#factEXIT >#66#return; 5319#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 5424#factFINAL assume true; 5425#factEXIT >#68#return; 5413#L30-1 call binomialCoefficient_#t~ret2#1 := fact(binomialCoefficient_~k#1);< 5426#factENTRY ~n := #in~n; 5463#L25 assume !(~n <= 0); 5317#L26 call #t~ret0 := fact(~n - 1);< 5365#factENTRY ~n := #in~n; 5466#L25 assume !(~n <= 0); 5315#L26 call #t~ret0 := fact(~n - 1);< 5365#factENTRY ~n := #in~n; 5466#L25 assume ~n <= 0;#res := 1; 5465#factFINAL assume true; 5461#factEXIT >#66#return; 5318#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 5330#factFINAL assume true; 5314#factEXIT >#66#return; 5319#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 5424#factFINAL assume true; 5425#factEXIT >#70#return; 5405#L30-2 call binomialCoefficient_#t~ret3#1 := fact(binomialCoefficient_~n#1 - binomialCoefficient_~k#1);< 5426#factENTRY ~n := #in~n; 5463#L25 assume !(~n <= 0); 5317#L26 call #t~ret0 := fact(~n - 1);< 5365#factENTRY ~n := #in~n; 5466#L25 assume !(~n <= 0); 5315#L26 call #t~ret0 := fact(~n - 1);< 5365#factENTRY ~n := #in~n; 5466#L25 assume ~n <= 0;#res := 1; 5465#factFINAL assume true; 5461#factEXIT >#66#return; 5318#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 5330#factFINAL assume true; 5314#factEXIT >#66#return; 5319#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 5424#factFINAL assume true; 5425#factEXIT >#72#return; 5457#L30-3 binomialCoefficient_#res#1 := (if binomialCoefficient_#t~ret1#1 < 0 && 0 != binomialCoefficient_#t~ret1#1 % (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) then (if binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1 < 0 then binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) - 1 else 1 + binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1)) else binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1));havoc binomialCoefficient_#t~ret1#1;havoc binomialCoefficient_#t~ret2#1;havoc binomialCoefficient_#t~ret3#1; 5455#L30-4 main_#t~ret9#1 := binomialCoefficient_#res#1;assume { :end_inline_binomialCoefficient } true;havoc main_#t~ret9#1; 5453#L42-2 main_#t~post8#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post8#1;havoc main_#t~post8#1; 5451#L42-3 assume !!(main_~k~0#1 <= main_~x~0#1); 5449#L43 assume !(main_~k~0#1 <= main_~n~0#1);assume { :begin_inline_binomialCoefficient } true;binomialCoefficient_#in~n#1, binomialCoefficient_#in~k#1 := main_~k~0#1, main_~n~0#1;havoc binomialCoefficient_#res#1;havoc binomialCoefficient_#t~ret1#1, binomialCoefficient_#t~ret2#1, binomialCoefficient_#t~ret3#1, binomialCoefficient_~n#1, binomialCoefficient_~k#1;binomialCoefficient_~n#1 := binomialCoefficient_#in~n#1;binomialCoefficient_~k#1 := binomialCoefficient_#in~k#1; 5415#L30-5 call binomialCoefficient_#t~ret1#1 := fact(binomialCoefficient_~n#1);< 5426#factENTRY ~n := #in~n; 5463#L25 assume !(~n <= 0); 5317#L26 call #t~ret0 := fact(~n - 1);< 5365#factENTRY ~n := #in~n; 5466#L25 assume !(~n <= 0); 5315#L26 call #t~ret0 := fact(~n - 1);< 5365#factENTRY ~n := #in~n; 5466#L25 assume ~n <= 0;#res := 1; 5465#factFINAL assume true; 5461#factEXIT >#66#return; 5318#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 5330#factFINAL assume true; 5314#factEXIT >#66#return; 5319#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 5424#factFINAL assume true; 5425#factEXIT >#74#return; 5407#L30-6 call binomialCoefficient_#t~ret2#1 := fact(binomialCoefficient_~k#1);< 5426#factENTRY ~n := #in~n; 5463#L25 assume !(~n <= 0); 5317#L26 call #t~ret0 := fact(~n - 1);< 5365#factENTRY ~n := #in~n; 5466#L25 assume !(~n <= 0); 5315#L26 call #t~ret0 := fact(~n - 1);< 5365#factENTRY ~n := #in~n; 5466#L25 assume ~n <= 0;#res := 1; 5465#factFINAL assume true; 5461#factEXIT >#66#return; 5318#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 5330#factFINAL assume true; 5314#factEXIT >#66#return; 5319#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 5424#factFINAL assume true; 5425#factEXIT >#76#return; 5417#L30-7 call binomialCoefficient_#t~ret3#1 := fact(binomialCoefficient_~n#1 - binomialCoefficient_~k#1);< 5423#factENTRY ~n := #in~n; 5464#L25 assume !(~n <= 0); 5317#L26 call #t~ret0 := fact(~n - 1);< 5365#factENTRY ~n := #in~n; 5466#L25 assume ~n <= 0;#res := 1; 5465#factFINAL assume true; 5461#factEXIT >#66#return; 5460#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 5459#factFINAL assume true; 5403#factEXIT >#78#return; 5402#L30-8 binomialCoefficient_#res#1 := (if binomialCoefficient_#t~ret1#1 < 0 && 0 != binomialCoefficient_#t~ret1#1 % (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) then (if binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1 < 0 then binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) - 1 else 1 + binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1)) else binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1));havoc binomialCoefficient_#t~ret1#1;havoc binomialCoefficient_#t~ret2#1;havoc binomialCoefficient_#t~ret3#1; 5401#L30-9 main_#t~ret10#1 := binomialCoefficient_#res#1;assume { :end_inline_binomialCoefficient } true;havoc main_#t~ret10#1; 5400#L42-2 main_#t~post8#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post8#1;havoc main_#t~post8#1; 5398#L42-3 assume !(main_~k~0#1 <= main_~x~0#1); 5379#L41-2 main_#t~post7#1 := main_~n~0#1;main_~n~0#1 := 1 + main_#t~post7#1;havoc main_#t~post7#1; 5369#L41-3 assume !!(main_~n~0#1 <= main_~x~0#1);main_~k~0#1 := 0; 5370#L42-3 [2022-10-17 10:15:13,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:13,190 INFO L85 PathProgramCache]: Analyzing trace with hash 36330292, now seen corresponding path program 5 times [2022-10-17 10:15:13,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:13,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108035811] [2022-10-17 10:15:13,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:13,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:13,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:15:13,194 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:15:13,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:15:13,198 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:15:13,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:13,199 INFO L85 PathProgramCache]: Analyzing trace with hash -103094629, now seen corresponding path program 4 times [2022-10-17 10:15:13,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:13,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631506041] [2022-10-17 10:15:13,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:13,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:13,210 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:15:13,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [302592099] [2022-10-17 10:15:13,211 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-17 10:15:13,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:15:13,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:13,213 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:15:13,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-10-17 10:15:13,297 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-17 10:15:13,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:15:13,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 13 conjunts are in the unsatisfiable core [2022-10-17 10:15:13,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:13,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1331 backedges. 791 proven. 32 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2022-10-17 10:15:13,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:15:13,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1331 backedges. 107 proven. 160 refuted. 0 times theorem prover too weak. 1064 trivial. 0 not checked. [2022-10-17 10:15:13,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:15:13,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631506041] [2022-10-17 10:15:13,763 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:15:13,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302592099] [2022-10-17 10:15:13,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302592099] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:15:13,764 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:15:13,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 15 [2022-10-17 10:15:13,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858162169] [2022-10-17 10:15:13,764 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:15:13,765 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-10-17 10:15:13,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:15:13,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-17 10:15:13,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-10-17 10:15:13,766 INFO L87 Difference]: Start difference. First operand 269 states and 482 transitions. cyclomatic complexity: 220 Second operand has 15 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 15 states have internal predecessors, (44), 9 states have call successors, (20), 2 states have call predecessors, (20), 5 states have return successors, (20), 8 states have call predecessors, (20), 9 states have call successors, (20) [2022-10-17 10:15:14,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:14,265 INFO L93 Difference]: Finished difference Result 421 states and 736 transitions. [2022-10-17 10:15:14,265 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 421 states and 736 transitions. [2022-10-17 10:15:14,273 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 167 [2022-10-17 10:15:14,282 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 421 states to 421 states and 736 transitions. [2022-10-17 10:15:14,282 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 211 [2022-10-17 10:15:14,283 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 211 [2022-10-17 10:15:14,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 421 states and 736 transitions. [2022-10-17 10:15:14,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-10-17 10:15:14,283 INFO L218 hiAutomatonCegarLoop]: Abstraction has 421 states and 736 transitions. [2022-10-17 10:15:14,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states and 736 transitions. [2022-10-17 10:15:14,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 313. [2022-10-17 10:15:14,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 189 states have (on average 1.1428571428571428) internal successors, (216), 194 states have internal predecessors, (216), 108 states have call successors, (108), 14 states have call predecessors, (108), 16 states have return successors, (252), 104 states have call predecessors, (252), 108 states have call successors, (252) [2022-10-17 10:15:14,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 576 transitions. [2022-10-17 10:15:14,305 INFO L240 hiAutomatonCegarLoop]: Abstraction has 313 states and 576 transitions. [2022-10-17 10:15:14,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 10:15:14,306 INFO L428 stractBuchiCegarLoop]: Abstraction has 313 states and 576 transitions. [2022-10-17 10:15:14,306 INFO L335 stractBuchiCegarLoop]: ======== Iteration 11 ============ [2022-10-17 10:15:14,306 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 313 states and 576 transitions. [2022-10-17 10:15:14,309 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 117 [2022-10-17 10:15:14,310 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:15:14,310 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:15:14,311 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-10-17 10:15:14,311 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [18, 18, 9, 9, 9, 9, 9, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:14,312 INFO L748 eck$LassoCheckResult]: Stem: 7063#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 7019#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~ret9#1, main_#t~ret10#1, main_#t~post8#1, main_~k~0#1, main_#t~post7#1, main_~n~0#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 7020#L35 assume !(main_~x~0#1 < 0);main_~y~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 7062#L38 assume !(main_~y~0#1 < 0);main_~z~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~n~0#1 := 0; 7075#L41-3 assume !!(main_~n~0#1 <= main_~x~0#1);main_~k~0#1 := 0; 7051#L42-3 [2022-10-17 10:15:14,312 INFO L750 eck$LassoCheckResult]: Loop: 7051#L42-3 assume !!(main_~k~0#1 <= main_~x~0#1); 7100#L43 assume main_~k~0#1 <= main_~n~0#1;assume { :begin_inline_binomialCoefficient } true;binomialCoefficient_#in~n#1, binomialCoefficient_#in~k#1 := main_~n~0#1, main_~k~0#1;havoc binomialCoefficient_#res#1;havoc binomialCoefficient_#t~ret1#1, binomialCoefficient_#t~ret2#1, binomialCoefficient_#t~ret3#1, binomialCoefficient_~n#1, binomialCoefficient_~k#1;binomialCoefficient_~n#1 := binomialCoefficient_#in~n#1;binomialCoefficient_~k#1 := binomialCoefficient_#in~k#1; 6960#L30 call binomialCoefficient_#t~ret1#1 := fact(binomialCoefficient_~n#1);< 7089#factENTRY ~n := #in~n; 7099#L25 assume !(~n <= 0); 7094#L26 call #t~ret0 := fact(~n - 1);< 7045#factENTRY ~n := #in~n; 7123#L25 assume ~n <= 0;#res := 1; 7122#factFINAL assume true; 7121#factEXIT >#66#return; 7120#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 7087#factFINAL assume true; 7088#factEXIT >#68#return; 6949#L30-1 call binomialCoefficient_#t~ret2#1 := fact(binomialCoefficient_~k#1);< 7089#factENTRY ~n := #in~n; 7099#L25 assume ~n <= 0;#res := 1; 7013#factFINAL assume true; 6948#factEXIT >#70#return; 6965#L30-2 call binomialCoefficient_#t~ret3#1 := fact(binomialCoefficient_~n#1 - binomialCoefficient_~k#1);< 7086#factENTRY ~n := #in~n; 7098#L25 assume !(~n <= 0); 7094#L26 call #t~ret0 := fact(~n - 1);< 7045#factENTRY ~n := #in~n; 7123#L25 assume !(~n <= 0); 7095#L26 call #t~ret0 := fact(~n - 1);< 7045#factENTRY ~n := #in~n; 7123#L25 assume ~n <= 0;#res := 1; 7122#factFINAL assume true; 7121#factEXIT >#66#return; 7097#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 7110#factFINAL assume true; 7093#factEXIT >#66#return; 7090#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 7091#factFINAL assume true; 7083#factEXIT >#72#return; 7084#L30-3 binomialCoefficient_#res#1 := (if binomialCoefficient_#t~ret1#1 < 0 && 0 != binomialCoefficient_#t~ret1#1 % (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) then (if binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1 < 0 then binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) - 1 else 1 + binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1)) else binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1));havoc binomialCoefficient_#t~ret1#1;havoc binomialCoefficient_#t~ret2#1;havoc binomialCoefficient_#t~ret3#1; 7161#L30-4 main_#t~ret9#1 := binomialCoefficient_#res#1;assume { :end_inline_binomialCoefficient } true;havoc main_#t~ret9#1; 7160#L42-2 main_#t~post8#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post8#1;havoc main_#t~post8#1; 7158#L42-3 assume !!(main_~k~0#1 <= main_~x~0#1); 7157#L43 assume main_~k~0#1 <= main_~n~0#1;assume { :begin_inline_binomialCoefficient } true;binomialCoefficient_#in~n#1, binomialCoefficient_#in~k#1 := main_~n~0#1, main_~k~0#1;havoc binomialCoefficient_#res#1;havoc binomialCoefficient_#t~ret1#1, binomialCoefficient_#t~ret2#1, binomialCoefficient_#t~ret3#1, binomialCoefficient_~n#1, binomialCoefficient_~k#1;binomialCoefficient_~n#1 := binomialCoefficient_#in~n#1;binomialCoefficient_~k#1 := binomialCoefficient_#in~k#1; 6962#L30 call binomialCoefficient_#t~ret1#1 := fact(binomialCoefficient_~n#1);< 7089#factENTRY ~n := #in~n; 7099#L25 assume !(~n <= 0); 7094#L26 call #t~ret0 := fact(~n - 1);< 7045#factENTRY ~n := #in~n; 7123#L25 assume ~n <= 0;#res := 1; 7122#factFINAL assume true; 7121#factEXIT >#66#return; 7120#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 7087#factFINAL assume true; 7088#factEXIT >#68#return; 6950#L30-1 call binomialCoefficient_#t~ret2#1 := fact(binomialCoefficient_~k#1);< 7089#factENTRY ~n := #in~n; 7099#L25 assume !(~n <= 0); 7094#L26 call #t~ret0 := fact(~n - 1);< 7045#factENTRY ~n := #in~n; 7123#L25 assume ~n <= 0;#res := 1; 7122#factFINAL assume true; 7121#factEXIT >#66#return; 7120#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 7087#factFINAL assume true; 7088#factEXIT >#70#return; 6952#L30-2 call binomialCoefficient_#t~ret3#1 := fact(binomialCoefficient_~n#1 - binomialCoefficient_~k#1);< 7089#factENTRY ~n := #in~n; 7099#L25 assume !(~n <= 0); 7094#L26 call #t~ret0 := fact(~n - 1);< 7045#factENTRY ~n := #in~n; 7123#L25 assume ~n <= 0;#res := 1; 7122#factFINAL assume true; 7121#factEXIT >#66#return; 7120#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 7087#factFINAL assume true; 7088#factEXIT >#72#return; 6966#L30-3 binomialCoefficient_#res#1 := (if binomialCoefficient_#t~ret1#1 < 0 && 0 != binomialCoefficient_#t~ret1#1 % (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) then (if binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1 < 0 then binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) - 1 else 1 + binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1)) else binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1));havoc binomialCoefficient_#t~ret1#1;havoc binomialCoefficient_#t~ret2#1;havoc binomialCoefficient_#t~ret3#1; 7179#L30-4 main_#t~ret9#1 := binomialCoefficient_#res#1;assume { :end_inline_binomialCoefficient } true;havoc main_#t~ret9#1; 7171#L42-2 main_#t~post8#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post8#1;havoc main_#t~post8#1; 7167#L42-3 assume !!(main_~k~0#1 <= main_~x~0#1); 7114#L43 assume !(main_~k~0#1 <= main_~n~0#1);assume { :begin_inline_binomialCoefficient } true;binomialCoefficient_#in~n#1, binomialCoefficient_#in~k#1 := main_~k~0#1, main_~n~0#1;havoc binomialCoefficient_#res#1;havoc binomialCoefficient_#t~ret1#1, binomialCoefficient_#t~ret2#1, binomialCoefficient_#t~ret3#1, binomialCoefficient_~n#1, binomialCoefficient_~k#1;binomialCoefficient_~n#1 := binomialCoefficient_#in~n#1;binomialCoefficient_~k#1 := binomialCoefficient_#in~k#1; 6956#L30-5 call binomialCoefficient_#t~ret1#1 := fact(binomialCoefficient_~n#1);< 7089#factENTRY ~n := #in~n; 7099#L25 assume !(~n <= 0); 7094#L26 call #t~ret0 := fact(~n - 1);< 7045#factENTRY ~n := #in~n; 7123#L25 assume ~n <= 0;#res := 1; 7122#factFINAL assume true; 7121#factEXIT >#66#return; 7120#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 7087#factFINAL assume true; 7088#factEXIT >#74#return; 6958#L30-6 call binomialCoefficient_#t~ret2#1 := fact(binomialCoefficient_~k#1);< 7089#factENTRY ~n := #in~n; 7099#L25 assume !(~n <= 0); 7094#L26 call #t~ret0 := fact(~n - 1);< 7045#factENTRY ~n := #in~n; 7123#L25 assume ~n <= 0;#res := 1; 7122#factFINAL assume true; 7121#factEXIT >#66#return; 7120#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 7087#factFINAL assume true; 7088#factEXIT >#76#return; 6972#L30-7 call binomialCoefficient_#t~ret3#1 := fact(binomialCoefficient_~n#1 - binomialCoefficient_~k#1);< 7086#factENTRY ~n := #in~n; 7098#L25 assume !(~n <= 0); 7094#L26 call #t~ret0 := fact(~n - 1);< 7045#factENTRY ~n := #in~n; 7123#L25 assume ~n <= 0;#res := 1; 7122#factFINAL assume true; 7121#factEXIT >#66#return; 7120#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 7087#factFINAL assume true; 7088#factEXIT >#78#return; 7082#L30-8 binomialCoefficient_#res#1 := (if binomialCoefficient_#t~ret1#1 < 0 && 0 != binomialCoefficient_#t~ret1#1 % (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) then (if binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1 < 0 then binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) - 1 else 1 + binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1)) else binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1));havoc binomialCoefficient_#t~ret1#1;havoc binomialCoefficient_#t~ret2#1;havoc binomialCoefficient_#t~ret3#1; 7081#L30-9 main_#t~ret10#1 := binomialCoefficient_#res#1;assume { :end_inline_binomialCoefficient } true;havoc main_#t~ret10#1; 7080#L42-2 main_#t~post8#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post8#1;havoc main_#t~post8#1; 7078#L42-3 assume !(main_~k~0#1 <= main_~x~0#1); 7059#L41-2 main_#t~post7#1 := main_~n~0#1;main_~n~0#1 := 1 + main_#t~post7#1;havoc main_#t~post7#1; 7050#L41-3 assume !!(main_~n~0#1 <= main_~x~0#1);main_~k~0#1 := 0; 7051#L42-3 [2022-10-17 10:15:14,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:14,312 INFO L85 PathProgramCache]: Analyzing trace with hash 36330292, now seen corresponding path program 6 times [2022-10-17 10:15:14,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:14,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246129758] [2022-10-17 10:15:14,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:14,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:14,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:15:14,316 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:15:14,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:15:14,320 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:15:14,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:14,320 INFO L85 PathProgramCache]: Analyzing trace with hash -530535317, now seen corresponding path program 5 times [2022-10-17 10:15:14,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:14,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830247118] [2022-10-17 10:15:14,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:14,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:14,330 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:15:14,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2046852536] [2022-10-17 10:15:14,331 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-17 10:15:14,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:15:14,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:14,332 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:15:14,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-10-17 10:15:14,427 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-10-17 10:15:14,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:15:14,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 15 conjunts are in the unsatisfiable core [2022-10-17 10:15:14,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:14,541 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 391 proven. 80 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2022-10-17 10:15:14,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:15:14,883 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 67 proven. 171 refuted. 0 times theorem prover too weak. 463 trivial. 0 not checked. [2022-10-17 10:15:14,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:15:14,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830247118] [2022-10-17 10:15:14,884 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:15:14,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046852536] [2022-10-17 10:15:14,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046852536] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:15:14,884 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:15:14,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 16 [2022-10-17 10:15:14,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950620102] [2022-10-17 10:15:14,885 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:15:14,885 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-10-17 10:15:14,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:15:14,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-17 10:15:14,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-10-17 10:15:14,886 INFO L87 Difference]: Start difference. First operand 313 states and 576 transitions. cyclomatic complexity: 270 Second operand has 16 states, 11 states have (on average 4.0) internal successors, (44), 14 states have internal predecessors, (44), 11 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (20), 8 states have call predecessors, (20), 11 states have call successors, (20) [2022-10-17 10:15:15,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:15,489 INFO L93 Difference]: Finished difference Result 513 states and 886 transitions. [2022-10-17 10:15:15,489 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 513 states and 886 transitions. [2022-10-17 10:15:15,498 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 174 [2022-10-17 10:15:15,508 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 513 states to 497 states and 856 transitions. [2022-10-17 10:15:15,508 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 249 [2022-10-17 10:15:15,509 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 249 [2022-10-17 10:15:15,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 497 states and 856 transitions. [2022-10-17 10:15:15,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-10-17 10:15:15,509 INFO L218 hiAutomatonCegarLoop]: Abstraction has 497 states and 856 transitions. [2022-10-17 10:15:15,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states and 856 transitions. [2022-10-17 10:15:15,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 399. [2022-10-17 10:15:15,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 235 states have (on average 1.148936170212766) internal successors, (270), 242 states have internal predecessors, (270), 148 states have call successors, (148), 20 states have call predecessors, (148), 16 states have return successors, (306), 136 states have call predecessors, (306), 148 states have call successors, (306) [2022-10-17 10:15:15,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 724 transitions. [2022-10-17 10:15:15,532 INFO L240 hiAutomatonCegarLoop]: Abstraction has 399 states and 724 transitions. [2022-10-17 10:15:15,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-10-17 10:15:15,533 INFO L428 stractBuchiCegarLoop]: Abstraction has 399 states and 724 transitions. [2022-10-17 10:15:15,533 INFO L335 stractBuchiCegarLoop]: ======== Iteration 12 ============ [2022-10-17 10:15:15,533 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 399 states and 724 transitions. [2022-10-17 10:15:15,537 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 148 [2022-10-17 10:15:15,537 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:15:15,538 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:15:15,538 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:15,538 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-10-17 10:15:15,539 INFO L748 eck$LassoCheckResult]: Stem: 8639#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 8612#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~ret9#1, main_#t~ret10#1, main_#t~post8#1, main_~k~0#1, main_#t~post7#1, main_~n~0#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 8613#L35 assume !(main_~x~0#1 < 0);main_~y~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 8638#L38 assume !(main_~y~0#1 < 0);main_~z~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~n~0#1 := 0; 8654#L41-3 assume !!(main_~n~0#1 <= main_~x~0#1);main_~k~0#1 := 0; 8744#L42-3 assume !!(main_~k~0#1 <= main_~x~0#1); 8743#L43 assume main_~k~0#1 <= main_~n~0#1;assume { :begin_inline_binomialCoefficient } true;binomialCoefficient_#in~n#1, binomialCoefficient_#in~k#1 := main_~n~0#1, main_~k~0#1;havoc binomialCoefficient_#res#1;havoc binomialCoefficient_#t~ret1#1, binomialCoefficient_#t~ret2#1, binomialCoefficient_#t~ret3#1, binomialCoefficient_~n#1, binomialCoefficient_~k#1;binomialCoefficient_~n#1 := binomialCoefficient_#in~n#1;binomialCoefficient_~k#1 := binomialCoefficient_#in~k#1; 8699#L30 call binomialCoefficient_#t~ret1#1 := fact(binomialCoefficient_~n#1);< 8595#factENTRY ~n := #in~n; 8716#L25 assume ~n <= 0;#res := 1; 8715#factFINAL assume true; 8681#factEXIT >#68#return; 8520#L30-1 call binomialCoefficient_#t~ret2#1 := fact(binomialCoefficient_~k#1);< 8671#factENTRY ~n := #in~n; 8680#L25 assume !(~n <= 0); 8618#L26 call #t~ret0 := fact(~n - 1);< 8620#factENTRY [2022-10-17 10:15:15,539 INFO L750 eck$LassoCheckResult]: Loop: 8620#factENTRY ~n := #in~n; 8661#L25 assume !(~n <= 0); 8617#L26 call #t~ret0 := fact(~n - 1);< 8620#factENTRY [2022-10-17 10:15:15,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:15,539 INFO L85 PathProgramCache]: Analyzing trace with hash 960037668, now seen corresponding path program 1 times [2022-10-17 10:15:15,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:15,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522891514] [2022-10-17 10:15:15,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:15,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:15,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:15,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:15:15,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:15,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:15:15,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:15:15,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522891514] [2022-10-17 10:15:15,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522891514] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:15,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:15,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:15:15,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311093690] [2022-10-17 10:15:15,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:15,617 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-10-17 10:15:15,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:15,617 INFO L85 PathProgramCache]: Analyzing trace with hash 29980, now seen corresponding path program 1 times [2022-10-17 10:15:15,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:15,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543483298] [2022-10-17 10:15:15,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:15,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:15,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:15:15,620 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:15:15,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:15:15,623 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:15:15,648 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:15:15,649 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:15:15,649 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:15:15,649 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:15:15,649 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-10-17 10:15:15,649 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:15,649 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:15:15,649 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:15:15,649 INFO L133 ssoRankerPreferences]: Filename of dumped script: Binomial.c_Iteration12_Loop [2022-10-17 10:15:15,649 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:15:15,649 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:15:15,650 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:15,652 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:15,653 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:15,655 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:15,681 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:15:15,681 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-10-17 10:15:15,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:15,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:15,682 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:15,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (92)] Waiting until timeout for monitored process [2022-10-17 10:15:15,684 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:15:15,684 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:15:15,702 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:15:15,702 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fact_#res=0} Honda state: {fact_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:15:15,727 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (92)] Ended with exit code 0 [2022-10-17 10:15:15,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:15,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:15,728 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:15,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (93)] Waiting until timeout for monitored process [2022-10-17 10:15:15,730 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:15:15,730 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:15:15,738 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:15:15,738 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fact_#t~ret0=0} Honda state: {fact_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:15:15,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (93)] Ended with exit code 0 [2022-10-17 10:15:15,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:15,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:15,759 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:15,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (94)] Waiting until timeout for monitored process [2022-10-17 10:15:15,760 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:15:15,760 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:15:15,789 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:15:15,789 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fact_~n=0} Honda state: {fact_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:15:15,821 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (94)] Ended with exit code 0 [2022-10-17 10:15:15,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:15,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:15,823 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:15,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (95)] Waiting until timeout for monitored process [2022-10-17 10:15:15,829 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:15:15,829 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:15:15,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (95)] Ended with exit code 0 [2022-10-17 10:15:15,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:15,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:15,856 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:15,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (96)] Waiting until timeout for monitored process [2022-10-17 10:15:15,857 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-10-17 10:15:15,858 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:15:15,889 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-10-17 10:15:15,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (96)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:15,892 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:15:15,892 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:15:15,892 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:15:15,892 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:15:15,893 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-10-17 10:15:15,893 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:15,893 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:15:15,893 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:15:15,893 INFO L133 ssoRankerPreferences]: Filename of dumped script: Binomial.c_Iteration12_Loop [2022-10-17 10:15:15,893 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:15:15,893 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:15:15,894 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:15,895 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:15,898 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:15,900 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:15,921 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:15:15,921 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-10-17 10:15:15,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:15,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:15,923 INFO L229 MonitoredProcess]: Starting monitored process 97 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:15,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (97)] Waiting until timeout for monitored process [2022-10-17 10:15:15,924 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:15,931 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:15:15,931 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:15,931 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:15,931 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:15,931 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:15:15,931 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:15:15,931 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:15,932 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:15,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (97)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:15,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:15,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:15,952 INFO L229 MonitoredProcess]: Starting monitored process 98 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:15,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (98)] Waiting until timeout for monitored process [2022-10-17 10:15:15,955 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:15,962 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:15:15,962 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:15,962 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:15,962 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:15,962 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:15:15,962 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:15:15,963 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:15,963 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:15,983 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (98)] Ended with exit code 0 [2022-10-17 10:15:15,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:15,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:15,984 INFO L229 MonitoredProcess]: Starting monitored process 99 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:15,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (99)] Waiting until timeout for monitored process [2022-10-17 10:15:15,985 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:15,991 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:15:15,991 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:15,991 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:15,991 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:15,992 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:15:15,992 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:15:15,992 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:15,993 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:16,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (99)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:16,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:16,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:16,014 INFO L229 MonitoredProcess]: Starting monitored process 100 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:16,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (100)] Waiting until timeout for monitored process [2022-10-17 10:15:16,015 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:16,022 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:15:16,022 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:16,022 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:16,022 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:16,022 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:15:16,023 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:15:16,023 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:16,031 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-10-17 10:15:16,034 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-10-17 10:15:16,034 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-10-17 10:15:16,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:16,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:16,035 INFO L229 MonitoredProcess]: Starting monitored process 101 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:16,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (101)] Waiting until timeout for monitored process [2022-10-17 10:15:16,036 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-10-17 10:15:16,036 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-10-17 10:15:16,036 INFO L513 LassoAnalysis]: Proved termination. [2022-10-17 10:15:16,037 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fact_#in~n) = 1*fact_#in~n Supporting invariants [] [2022-10-17 10:15:16,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (100)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:16,056 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-10-17 10:15:16,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:16,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:16,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-17 10:15:16,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:16,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 10:15:16,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:16,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:15:16,189 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2022-10-17 10:15:16,189 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 399 states and 724 transitions. cyclomatic complexity: 333 Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:15:16,304 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 399 states and 724 transitions. cyclomatic complexity: 333. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 501 states and 876 transitions. Complement of second has 13 states. [2022-10-17 10:15:16,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2022-10-17 10:15:16,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:15:16,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 32 transitions. [2022-10-17 10:15:16,306 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 32 transitions. Stem has 16 letters. Loop has 3 letters. [2022-10-17 10:15:16,306 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:15:16,306 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 32 transitions. Stem has 19 letters. Loop has 3 letters. [2022-10-17 10:15:16,306 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:15:16,306 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 32 transitions. Stem has 16 letters. Loop has 6 letters. [2022-10-17 10:15:16,307 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:15:16,307 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 501 states and 876 transitions. [2022-10-17 10:15:16,316 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 156 [2022-10-17 10:15:16,326 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 501 states to 487 states and 860 transitions. [2022-10-17 10:15:16,327 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 237 [2022-10-17 10:15:16,327 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 240 [2022-10-17 10:15:16,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 487 states and 860 transitions. [2022-10-17 10:15:16,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-10-17 10:15:16,329 INFO L218 hiAutomatonCegarLoop]: Abstraction has 487 states and 860 transitions. [2022-10-17 10:15:16,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states and 860 transitions. [2022-10-17 10:15:16,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 481. [2022-10-17 10:15:16,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 285 states have (on average 1.1649122807017545) internal successors, (332), 294 states have internal predecessors, (332), 172 states have call successors, (172), 36 states have call predecessors, (172), 24 states have return successors, (346), 150 states have call predecessors, (346), 172 states have call successors, (346) [2022-10-17 10:15:16,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 850 transitions. [2022-10-17 10:15:16,392 INFO L240 hiAutomatonCegarLoop]: Abstraction has 481 states and 850 transitions. [2022-10-17 10:15:16,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:15:16,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:15:16,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:15:16,393 INFO L87 Difference]: Start difference. First operand 481 states and 850 transitions. Second operand has 6 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:15:16,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (101)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:16,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:16,470 INFO L93 Difference]: Finished difference Result 581 states and 964 transitions. [2022-10-17 10:15:16,470 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 581 states and 964 transitions. [2022-10-17 10:15:16,480 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 178 [2022-10-17 10:15:16,490 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 581 states to 581 states and 964 transitions. [2022-10-17 10:15:16,490 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 289 [2022-10-17 10:15:16,491 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 289 [2022-10-17 10:15:16,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 581 states and 964 transitions. [2022-10-17 10:15:16,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-10-17 10:15:16,491 INFO L218 hiAutomatonCegarLoop]: Abstraction has 581 states and 964 transitions. [2022-10-17 10:15:16,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states and 964 transitions. [2022-10-17 10:15:16,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 505. [2022-10-17 10:15:16,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 303 states have (on average 1.155115511551155) internal successors, (350), 312 states have internal predecessors, (350), 172 states have call successors, (172), 42 states have call predecessors, (172), 30 states have return successors, (346), 150 states have call predecessors, (346), 172 states have call successors, (346) [2022-10-17 10:15:16,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 868 transitions. [2022-10-17 10:15:16,518 INFO L240 hiAutomatonCegarLoop]: Abstraction has 505 states and 868 transitions. [2022-10-17 10:15:16,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 10:15:16,519 INFO L428 stractBuchiCegarLoop]: Abstraction has 505 states and 868 transitions. [2022-10-17 10:15:16,520 INFO L335 stractBuchiCegarLoop]: ======== Iteration 13 ============ [2022-10-17 10:15:16,520 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 505 states and 868 transitions. [2022-10-17 10:15:16,524 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 156 [2022-10-17 10:15:16,525 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:15:16,525 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:15:16,526 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:16,527 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [17, 17, 9, 8, 8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:16,527 INFO L748 eck$LassoCheckResult]: Stem: 10656#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 10623#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~ret9#1, main_#t~ret10#1, main_#t~post8#1, main_~k~0#1, main_#t~post7#1, main_~n~0#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 10624#L35 assume !(main_~x~0#1 < 0);main_~y~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 10655#L38 assume !(main_~y~0#1 < 0);main_~z~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~n~0#1 := 0; 10640#L41-3 assume !!(main_~n~0#1 <= main_~x~0#1);main_~k~0#1 := 0; 10641#L42-3 assume !!(main_~k~0#1 <= main_~x~0#1); 10924#L43 assume main_~k~0#1 <= main_~n~0#1;assume { :begin_inline_binomialCoefficient } true;binomialCoefficient_#in~n#1, binomialCoefficient_#in~k#1 := main_~n~0#1, main_~k~0#1;havoc binomialCoefficient_#res#1;havoc binomialCoefficient_#t~ret1#1, binomialCoefficient_#t~ret2#1, binomialCoefficient_#t~ret3#1, binomialCoefficient_~n#1, binomialCoefficient_~k#1;binomialCoefficient_~n#1 := binomialCoefficient_#in~n#1;binomialCoefficient_~k#1 := binomialCoefficient_#in~k#1; 10588#L30 call binomialCoefficient_#t~ret1#1 := fact(binomialCoefficient_~n#1);< 10589#factENTRY ~n := #in~n; 10833#L25 assume !(~n <= 0); 10776#L26 call #t~ret0 := fact(~n - 1);< 10774#factENTRY ~n := #in~n; 10790#L25 assume ~n <= 0;#res := 1; 10813#factFINAL assume true; 10783#factEXIT >#66#return; 10775#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 10769#factFINAL assume true; 10729#factEXIT >#68#return; 10760#L30-1 [2022-10-17 10:15:16,528 INFO L750 eck$LassoCheckResult]: Loop: 10760#L30-1 call binomialCoefficient_#t~ret2#1 := fact(binomialCoefficient_~k#1);< 10881#factENTRY ~n := #in~n; 10886#L25 assume ~n <= 0;#res := 1; 10885#factFINAL assume true; 10880#factEXIT >#70#return; 10738#L30-2 call binomialCoefficient_#t~ret3#1 := fact(binomialCoefficient_~n#1 - binomialCoefficient_~k#1);< 10679#factENTRY ~n := #in~n; 10814#L25 assume !(~n <= 0); 10631#L26 call #t~ret0 := fact(~n - 1);< 10632#factENTRY ~n := #in~n; 10949#L25 assume !(~n <= 0); 10629#L26 call #t~ret0 := fact(~n - 1);< 10632#factENTRY ~n := #in~n; 10949#L25 assume !(~n <= 0); 10629#L26 call #t~ret0 := fact(~n - 1);< 10632#factENTRY ~n := #in~n; 10949#L25 assume ~n <= 0;#res := 1; 10806#factFINAL assume true; 10801#factEXIT >#66#return; 10661#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 10664#factFINAL assume true; 10770#factEXIT >#66#return; 10661#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 10664#factFINAL assume true; 10770#factEXIT >#66#return; 10772#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 10850#factFINAL assume true; 10815#factEXIT >#72#return; 10816#L30-3 binomialCoefficient_#res#1 := (if binomialCoefficient_#t~ret1#1 < 0 && 0 != binomialCoefficient_#t~ret1#1 % (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) then (if binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1 < 0 then binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) - 1 else 1 + binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1)) else binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1));havoc binomialCoefficient_#t~ret1#1;havoc binomialCoefficient_#t~ret2#1;havoc binomialCoefficient_#t~ret3#1; 11032#L30-4 main_#t~ret9#1 := binomialCoefficient_#res#1;assume { :end_inline_binomialCoefficient } true;havoc main_#t~ret9#1; 11030#L42-2 main_#t~post8#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post8#1;havoc main_#t~post8#1; 10982#L42-3 assume !!(main_~k~0#1 <= main_~x~0#1); 10657#L43 assume main_~k~0#1 <= main_~n~0#1;assume { :begin_inline_binomialCoefficient } true;binomialCoefficient_#in~n#1, binomialCoefficient_#in~k#1 := main_~n~0#1, main_~k~0#1;havoc binomialCoefficient_#res#1;havoc binomialCoefficient_#t~ret1#1, binomialCoefficient_#t~ret2#1, binomialCoefficient_#t~ret3#1, binomialCoefficient_~n#1, binomialCoefficient_~k#1;binomialCoefficient_~n#1 := binomialCoefficient_#in~n#1;binomialCoefficient_~k#1 := binomialCoefficient_#in~k#1; 10658#L30 call binomialCoefficient_#t~ret1#1 := fact(binomialCoefficient_~n#1);< 10810#factENTRY ~n := #in~n; 10807#L25 assume !(~n <= 0); 10803#L26 call #t~ret0 := fact(~n - 1);< 10804#factENTRY ~n := #in~n; 10809#L25 assume ~n <= 0;#res := 1; 10806#factFINAL assume true; 10801#factEXIT >#66#return; 10775#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 10769#factFINAL assume true; 10729#factEXIT >#68#return; 10737#L30-1 call binomialCoefficient_#t~ret2#1 := fact(binomialCoefficient_~k#1);< 10575#factENTRY ~n := #in~n; 10853#L25 assume !(~n <= 0); 10631#L26 call #t~ret0 := fact(~n - 1);< 10632#factENTRY ~n := #in~n; 10949#L25 assume ~n <= 0;#res := 1; 10806#factFINAL assume true; 10801#factEXIT >#66#return; 10775#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 10769#factFINAL assume true; 10729#factEXIT >#70#return; 10761#L30-2 call binomialCoefficient_#t~ret3#1 := fact(binomialCoefficient_~n#1 - binomialCoefficient_~k#1);< 10812#factENTRY ~n := #in~n; 10852#L25 assume ~n <= 0;#res := 1; 10808#factFINAL assume true; 10799#factEXIT >#72#return; 10800#L30-3 binomialCoefficient_#res#1 := (if binomialCoefficient_#t~ret1#1 < 0 && 0 != binomialCoefficient_#t~ret1#1 % (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) then (if binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1 < 0 then binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) - 1 else 1 + binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1)) else binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1));havoc binomialCoefficient_#t~ret1#1;havoc binomialCoefficient_#t~ret2#1;havoc binomialCoefficient_#t~ret3#1; 10849#L30-4 main_#t~ret9#1 := binomialCoefficient_#res#1;assume { :end_inline_binomialCoefficient } true;havoc main_#t~ret9#1; 10848#L42-2 main_#t~post8#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post8#1;havoc main_#t~post8#1; 10838#L42-3 assume !!(main_~k~0#1 <= main_~x~0#1); 10839#L43 assume !(main_~k~0#1 <= main_~n~0#1);assume { :begin_inline_binomialCoefficient } true;binomialCoefficient_#in~n#1, binomialCoefficient_#in~k#1 := main_~k~0#1, main_~n~0#1;havoc binomialCoefficient_#res#1;havoc binomialCoefficient_#t~ret1#1, binomialCoefficient_#t~ret2#1, binomialCoefficient_#t~ret3#1, binomialCoefficient_~n#1, binomialCoefficient_~k#1;binomialCoefficient_~n#1 := binomialCoefficient_#in~n#1;binomialCoefficient_~k#1 := binomialCoefficient_#in~k#1; 10753#L30-5 call binomialCoefficient_#t~ret1#1 := fact(binomialCoefficient_~n#1);< 10575#factENTRY ~n := #in~n; 10853#L25 assume !(~n <= 0); 10631#L26 call #t~ret0 := fact(~n - 1);< 10632#factENTRY ~n := #in~n; 10949#L25 assume ~n <= 0;#res := 1; 10806#factFINAL assume true; 10801#factEXIT >#66#return; 10775#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 10769#factFINAL assume true; 10729#factEXIT >#74#return; 10742#L30-6 call binomialCoefficient_#t~ret2#1 := fact(binomialCoefficient_~k#1);< 10575#factENTRY ~n := #in~n; 10853#L25 assume ~n <= 0;#res := 1; 10808#factFINAL assume true; 10799#factEXIT >#76#return; 10747#L30-7 call binomialCoefficient_#t~ret3#1 := fact(binomialCoefficient_~n#1 - binomialCoefficient_~k#1);< 10679#factENTRY ~n := #in~n; 10814#L25 assume !(~n <= 0); 10631#L26 call #t~ret0 := fact(~n - 1);< 10632#factENTRY ~n := #in~n; 10949#L25 assume ~n <= 0;#res := 1; 10806#factFINAL assume true; 10801#factEXIT >#66#return; 10775#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 10769#factFINAL assume true; 10729#factEXIT >#78#return; 10765#L30-8 binomialCoefficient_#res#1 := (if binomialCoefficient_#t~ret1#1 < 0 && 0 != binomialCoefficient_#t~ret1#1 % (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) then (if binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1 < 0 then binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) - 1 else 1 + binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1)) else binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1));havoc binomialCoefficient_#t~ret1#1;havoc binomialCoefficient_#t~ret2#1;havoc binomialCoefficient_#t~ret3#1; 10844#L30-9 main_#t~ret10#1 := binomialCoefficient_#res#1;assume { :end_inline_binomialCoefficient } true;havoc main_#t~ret10#1; 10842#L42-2 main_#t~post8#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post8#1;havoc main_#t~post8#1; 10840#L42-3 assume !(main_~k~0#1 <= main_~x~0#1); 10652#L41-2 main_#t~post7#1 := main_~n~0#1;main_~n~0#1 := 1 + main_#t~post7#1;havoc main_#t~post7#1; 10653#L41-3 assume !!(main_~n~0#1 <= main_~x~0#1);main_~k~0#1 := 0; 10854#L42-3 assume !!(main_~k~0#1 <= main_~x~0#1); 10851#L43 assume main_~k~0#1 <= main_~n~0#1;assume { :begin_inline_binomialCoefficient } true;binomialCoefficient_#in~n#1, binomialCoefficient_#in~k#1 := main_~n~0#1, main_~k~0#1;havoc binomialCoefficient_#res#1;havoc binomialCoefficient_#t~ret1#1, binomialCoefficient_#t~ret2#1, binomialCoefficient_#t~ret3#1, binomialCoefficient_~n#1, binomialCoefficient_~k#1;binomialCoefficient_~n#1 := binomialCoefficient_#in~n#1;binomialCoefficient_~k#1 := binomialCoefficient_#in~k#1; 10740#L30 call binomialCoefficient_#t~ret1#1 := fact(binomialCoefficient_~n#1);< 10575#factENTRY ~n := #in~n; 10853#L25 assume !(~n <= 0); 10631#L26 call #t~ret0 := fact(~n - 1);< 10632#factENTRY ~n := #in~n; 10949#L25 assume ~n <= 0;#res := 1; 10806#factFINAL assume true; 10801#factEXIT >#66#return; 10775#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 10769#factFINAL assume true; 10729#factEXIT >#68#return; 10760#L30-1 [2022-10-17 10:15:16,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:16,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1862517908, now seen corresponding path program 1 times [2022-10-17 10:15:16,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:16,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010173587] [2022-10-17 10:15:16,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:16,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:16,545 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:15:16,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [858966992] [2022-10-17 10:15:16,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:16,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:15:16,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:16,549 INFO L229 MonitoredProcess]: Starting monitored process 102 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:15:16,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-10-17 10:15:16,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:16,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 10:15:16,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:16,620 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 10:15:16,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:15:16,681 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 10:15:16,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:15:16,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010173587] [2022-10-17 10:15:16,682 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:15:16,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858966992] [2022-10-17 10:15:16,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858966992] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:15:16,682 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:15:16,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2022-10-17 10:15:16,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416258857] [2022-10-17 10:15:16,683 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:15:16,683 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-10-17 10:15:16,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:16,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1614117339, now seen corresponding path program 6 times [2022-10-17 10:15:16,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:16,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250098576] [2022-10-17 10:15:16,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:16,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:16,702 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:15:16,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1522697549] [2022-10-17 10:15:16,702 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-10-17 10:15:16,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:15:16,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:16,704 INFO L229 MonitoredProcess]: Starting monitored process 103 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:15:16,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-10-17 10:15:16,775 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-10-17 10:15:16,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:15:16,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 13 conjunts are in the unsatisfiable core [2022-10-17 10:15:16,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:16,889 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 373 proven. 14 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2022-10-17 10:15:16,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:15:17,206 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 109 proven. 68 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2022-10-17 10:15:17,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:15:17,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250098576] [2022-10-17 10:15:17,207 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:15:17,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522697549] [2022-10-17 10:15:17,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522697549] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:15:17,207 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:15:17,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 15 [2022-10-17 10:15:17,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471029990] [2022-10-17 10:15:17,208 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:15:17,209 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-10-17 10:15:17,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:15:17,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:15:17,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:15:17,210 INFO L87 Difference]: Start difference. First operand 505 states and 868 transitions. cyclomatic complexity: 375 Second operand has 7 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:15:17,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:17,398 INFO L93 Difference]: Finished difference Result 584 states and 1026 transitions. [2022-10-17 10:15:17,398 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 584 states and 1026 transitions. [2022-10-17 10:15:17,408 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 195 [2022-10-17 10:15:17,420 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 584 states to 578 states and 1012 transitions. [2022-10-17 10:15:17,420 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 287 [2022-10-17 10:15:17,421 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 287 [2022-10-17 10:15:17,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 578 states and 1012 transitions. [2022-10-17 10:15:17,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-10-17 10:15:17,422 INFO L218 hiAutomatonCegarLoop]: Abstraction has 578 states and 1012 transitions. [2022-10-17 10:15:17,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states and 1012 transitions. [2022-10-17 10:15:17,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 573. [2022-10-17 10:15:17,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 337 states have (on average 1.1543026706231454) internal successors, (389), 350 states have internal predecessors, (389), 206 states have call successors, (206), 38 states have call predecessors, (206), 30 states have return successors, (412), 184 states have call predecessors, (412), 206 states have call successors, (412) [2022-10-17 10:15:17,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 1007 transitions. [2022-10-17 10:15:17,455 INFO L240 hiAutomatonCegarLoop]: Abstraction has 573 states and 1007 transitions. [2022-10-17 10:15:17,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:15:17,456 INFO L428 stractBuchiCegarLoop]: Abstraction has 573 states and 1007 transitions. [2022-10-17 10:15:17,456 INFO L335 stractBuchiCegarLoop]: ======== Iteration 14 ============ [2022-10-17 10:15:17,456 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 573 states and 1007 transitions. [2022-10-17 10:15:17,462 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 195 [2022-10-17 10:15:17,462 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:15:17,462 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:15:17,463 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:17,463 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:17,463 INFO L748 eck$LassoCheckResult]: Stem: 12515#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 12480#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~ret9#1, main_#t~ret10#1, main_#t~post8#1, main_~k~0#1, main_#t~post7#1, main_~n~0#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 12481#L35 assume !(main_~x~0#1 < 0);main_~y~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 12514#L38 assume !(main_~y~0#1 < 0);main_~z~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~n~0#1 := 0; 12497#L41-3 assume !!(main_~n~0#1 <= main_~x~0#1);main_~k~0#1 := 0; 12498#L42-3 assume !!(main_~k~0#1 <= main_~x~0#1); 12724#L43 assume main_~k~0#1 <= main_~n~0#1;assume { :begin_inline_binomialCoefficient } true;binomialCoefficient_#in~n#1, binomialCoefficient_#in~k#1 := main_~n~0#1, main_~k~0#1;havoc binomialCoefficient_#res#1;havoc binomialCoefficient_#t~ret1#1, binomialCoefficient_#t~ret2#1, binomialCoefficient_#t~ret3#1, binomialCoefficient_~n#1, binomialCoefficient_~k#1;binomialCoefficient_~n#1 := binomialCoefficient_#in~n#1;binomialCoefficient_~k#1 := binomialCoefficient_#in~k#1; 12470#L30 call binomialCoefficient_#t~ret1#1 := fact(binomialCoefficient_~n#1);< 12471#factENTRY ~n := #in~n; 12740#L25 assume ~n <= 0;#res := 1; 12738#factFINAL assume true; 12735#factEXIT >#68#return; 12732#L30-1 call binomialCoefficient_#t~ret2#1 := fact(binomialCoefficient_~k#1);< 12733#factENTRY ~n := #in~n; 12742#L25 assume ~n <= 0;#res := 1; 12741#factFINAL assume true; 12731#factEXIT >#70#return; 12555#L30-2 call binomialCoefficient_#t~ret3#1 := fact(binomialCoefficient_~n#1 - binomialCoefficient_~k#1);< 12718#factENTRY ~n := #in~n; 12719#L25 assume ~n <= 0;#res := 1; 12743#factFINAL assume true; 12726#factEXIT >#72#return; 12729#L30-3 [2022-10-17 10:15:17,463 INFO L750 eck$LassoCheckResult]: Loop: 12729#L30-3 binomialCoefficient_#res#1 := (if binomialCoefficient_#t~ret1#1 < 0 && 0 != binomialCoefficient_#t~ret1#1 % (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) then (if binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1 < 0 then binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) - 1 else 1 + binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1)) else binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1));havoc binomialCoefficient_#t~ret1#1;havoc binomialCoefficient_#t~ret2#1;havoc binomialCoefficient_#t~ret3#1; 12739#L30-4 main_#t~ret9#1 := binomialCoefficient_#res#1;assume { :end_inline_binomialCoefficient } true;havoc main_#t~ret9#1; 12737#L42-2 main_#t~post8#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post8#1;havoc main_#t~post8#1; 12736#L42-3 assume !!(main_~k~0#1 <= main_~x~0#1); 12734#L43 assume main_~k~0#1 <= main_~n~0#1;assume { :begin_inline_binomialCoefficient } true;binomialCoefficient_#in~n#1, binomialCoefficient_#in~k#1 := main_~n~0#1, main_~k~0#1;havoc binomialCoefficient_#res#1;havoc binomialCoefficient_#t~ret1#1, binomialCoefficient_#t~ret2#1, binomialCoefficient_#t~ret3#1, binomialCoefficient_~n#1, binomialCoefficient_~k#1;binomialCoefficient_~n#1 := binomialCoefficient_#in~n#1;binomialCoefficient_~k#1 := binomialCoefficient_#in~k#1; 12728#L30 call binomialCoefficient_#t~ret1#1 := fact(binomialCoefficient_~n#1);< 12730#factENTRY ~n := #in~n; 12744#L25 assume ~n <= 0;#res := 1; 12743#factFINAL assume true; 12726#factEXIT >#68#return; 12582#L30-1 call binomialCoefficient_#t~ret2#1 := fact(binomialCoefficient_~k#1);< 12718#factENTRY ~n := #in~n; 12719#L25 assume ~n <= 0;#res := 1; 12743#factFINAL assume true; 12726#factEXIT >#70#return; 12727#L30-2 call binomialCoefficient_#t~ret3#1 := fact(binomialCoefficient_~n#1 - binomialCoefficient_~k#1);< 12730#factENTRY ~n := #in~n; 12744#L25 assume ~n <= 0;#res := 1; 12743#factFINAL assume true; 12726#factEXIT >#72#return; 12729#L30-3 [2022-10-17 10:15:17,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:17,465 INFO L85 PathProgramCache]: Analyzing trace with hash -455324880, now seen corresponding path program 1 times [2022-10-17 10:15:17,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:17,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984445378] [2022-10-17 10:15:17,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:17,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:17,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:15:17,477 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:15:17,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:15:17,499 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:15:17,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:17,502 INFO L85 PathProgramCache]: Analyzing trace with hash 467014384, now seen corresponding path program 1 times [2022-10-17 10:15:17,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:17,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756503513] [2022-10-17 10:15:17,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:17,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:17,505 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:15:17,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [844496459] [2022-10-17 10:15:17,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:17,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:15:17,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:17,510 INFO L229 MonitoredProcess]: Starting monitored process 104 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:15:17,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-10-17 10:15:17,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:15:17,546 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:15:17,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:15:17,560 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:15:17,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:17,560 INFO L85 PathProgramCache]: Analyzing trace with hash 448000159, now seen corresponding path program 1 times [2022-10-17 10:15:17,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:17,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241838097] [2022-10-17 10:15:17,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:17,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:17,568 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:15:17,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1250834570] [2022-10-17 10:15:17,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:17,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:15:17,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:17,570 INFO L229 MonitoredProcess]: Starting monitored process 105 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:15:17,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-10-17 10:15:17,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:17,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 10:15:17,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:17,666 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-17 10:15:17,666 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:15:17,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:15:17,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241838097] [2022-10-17 10:15:17,667 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:15:17,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250834570] [2022-10-17 10:15:17,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250834570] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:17,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:17,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:15:17,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221788893] [2022-10-17 10:15:17,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:18,858 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:15:18,858 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:15:18,858 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:15:18,858 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:15:18,858 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-10-17 10:15:18,858 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:18,858 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:15:18,858 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:15:18,859 INFO L133 ssoRankerPreferences]: Filename of dumped script: Binomial.c_Iteration14_Loop [2022-10-17 10:15:18,859 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:15:18,859 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:15:18,860 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:18,880 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:18,883 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:18,885 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:18,887 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:18,889 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:18,892 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:18,989 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:15:18,989 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-10-17 10:15:18,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:18,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:18,994 INFO L229 MonitoredProcess]: Starting monitored process 106 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:18,995 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:15:18,996 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:15:19,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (106)] Waiting until timeout for monitored process [2022-10-17 10:15:19,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (106)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:19,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:19,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:19,058 INFO L229 MonitoredProcess]: Starting monitored process 107 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:19,060 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-10-17 10:15:19,060 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:15:19,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (107)] Waiting until timeout for monitored process [2022-10-17 10:15:19,705 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-10-17 10:15:19,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (107)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:19,708 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:15:19,708 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:15:19,708 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:15:19,708 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:15:19,708 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-10-17 10:15:19,708 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:19,709 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:15:19,709 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:15:19,709 INFO L133 ssoRankerPreferences]: Filename of dumped script: Binomial.c_Iteration14_Loop [2022-10-17 10:15:19,709 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:15:19,709 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:15:19,710 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:19,713 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:19,715 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:19,718 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:19,720 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:19,722 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:19,737 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:19,816 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:15:19,816 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-10-17 10:15:19,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:19,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:19,817 INFO L229 MonitoredProcess]: Starting monitored process 108 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:19,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (108)] Waiting until timeout for monitored process [2022-10-17 10:15:19,818 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:19,825 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:15:19,825 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:19,825 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:19,825 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:19,825 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:15:19,826 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:15:19,826 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:19,827 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:19,845 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (108)] Ended with exit code 0 [2022-10-17 10:15:19,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:19,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:19,846 INFO L229 MonitoredProcess]: Starting monitored process 109 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:19,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (109)] Waiting until timeout for monitored process [2022-10-17 10:15:19,848 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:19,854 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:15:19,854 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:19,854 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:19,855 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:19,855 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:15:19,855 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:15:19,855 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:19,865 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:19,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (109)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:19,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:19,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:19,885 INFO L229 MonitoredProcess]: Starting monitored process 110 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:19,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (110)] Waiting until timeout for monitored process [2022-10-17 10:15:19,886 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:19,893 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:15:19,893 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:19,893 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:19,893 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:19,893 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:15:19,894 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:15:19,894 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:19,903 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:19,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (110)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:19,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:19,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:19,923 INFO L229 MonitoredProcess]: Starting monitored process 111 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:19,925 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:19,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (111)] Waiting until timeout for monitored process [2022-10-17 10:15:19,933 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:15:19,933 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:19,933 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:19,933 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:19,933 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:15:19,933 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:15:19,933 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:19,934 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:19,953 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (111)] Ended with exit code 0 [2022-10-17 10:15:19,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:19,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:19,954 INFO L229 MonitoredProcess]: Starting monitored process 112 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:19,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (112)] Waiting until timeout for monitored process [2022-10-17 10:15:19,955 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:19,962 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:15:19,962 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:19,962 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:19,962 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:19,962 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:15:19,963 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:15:19,963 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:19,964 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:19,983 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (112)] Ended with exit code 0 [2022-10-17 10:15:19,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:19,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:19,984 INFO L229 MonitoredProcess]: Starting monitored process 113 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:19,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (113)] Waiting until timeout for monitored process [2022-10-17 10:15:19,985 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:19,992 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:15:19,992 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:19,992 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:19,992 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:19,992 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:15:19,993 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:15:19,993 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:19,996 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-10-17 10:15:20,000 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-10-17 10:15:20,000 INFO L444 ModelExtractionUtils]: 6 out of 9 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-10-17 10:15:20,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:20,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:20,002 INFO L229 MonitoredProcess]: Starting monitored process 114 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:20,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (114)] Waiting until timeout for monitored process [2022-10-17 10:15:20,003 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-10-17 10:15:20,003 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-10-17 10:15:20,003 INFO L513 LassoAnalysis]: Proved termination. [2022-10-17 10:15:20,003 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0#1) = -1*ULTIMATE.start_main_~k~0#1 Supporting invariants [] [2022-10-17 10:15:20,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (113)] Ended with exit code 0 [2022-10-17 10:15:20,025 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-10-17 10:15:20,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:20,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:20,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-17 10:15:20,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:20,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:20,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 15 conjunts are in the unsatisfiable core [2022-10-17 10:15:20,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:20,302 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-17 10:15:20,302 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2022-10-17 10:15:20,302 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 573 states and 1007 transitions. cyclomatic complexity: 450 Second operand has 10 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-10-17 10:15:20,560 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 573 states and 1007 transitions. cyclomatic complexity: 450. Second operand has 10 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Result 1034 states and 1629 transitions. Complement of second has 35 states. [2022-10-17 10:15:20,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2022-10-17 10:15:20,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-10-17 10:15:20,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 63 transitions. [2022-10-17 10:15:20,562 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 63 transitions. Stem has 22 letters. Loop has 20 letters. [2022-10-17 10:15:20,563 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:15:20,563 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 63 transitions. Stem has 42 letters. Loop has 20 letters. [2022-10-17 10:15:20,563 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:15:20,564 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 63 transitions. Stem has 22 letters. Loop has 40 letters. [2022-10-17 10:15:20,565 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:15:20,565 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1034 states and 1629 transitions. [2022-10-17 10:15:20,580 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 160 [2022-10-17 10:15:20,594 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1034 states to 1000 states and 1569 transitions. [2022-10-17 10:15:20,594 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 356 [2022-10-17 10:15:20,595 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 361 [2022-10-17 10:15:20,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1000 states and 1569 transitions. [2022-10-17 10:15:20,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-10-17 10:15:20,596 INFO L218 hiAutomatonCegarLoop]: Abstraction has 1000 states and 1569 transitions. [2022-10-17 10:15:20,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states and 1569 transitions. [2022-10-17 10:15:20,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 973. [2022-10-17 10:15:20,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 973 states, 593 states have (on average 1.148397976391231) internal successors, (681), 614 states have internal predecessors, (681), 282 states have call successors, (296), 90 states have call predecessors, (296), 98 states have return successors, (564), 268 states have call predecessors, (564), 282 states have call successors, (564) [2022-10-17 10:15:20,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1541 transitions. [2022-10-17 10:15:20,667 INFO L240 hiAutomatonCegarLoop]: Abstraction has 973 states and 1541 transitions. [2022-10-17 10:15:20,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:15:20,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:15:20,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:15:20,668 INFO L87 Difference]: Start difference. First operand 973 states and 1541 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-10-17 10:15:20,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (114)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:20,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:20,736 INFO L93 Difference]: Finished difference Result 856 states and 1320 transitions. [2022-10-17 10:15:20,736 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 856 states and 1320 transitions. [2022-10-17 10:15:20,747 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 160 [2022-10-17 10:15:20,759 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 856 states to 825 states and 1278 transitions. [2022-10-17 10:15:20,759 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 320 [2022-10-17 10:15:20,760 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 320 [2022-10-17 10:15:20,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 825 states and 1278 transitions. [2022-10-17 10:15:20,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-10-17 10:15:20,761 INFO L218 hiAutomatonCegarLoop]: Abstraction has 825 states and 1278 transitions. [2022-10-17 10:15:20,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states and 1278 transitions. [2022-10-17 10:15:20,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 808. [2022-10-17 10:15:20,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 493 states have (on average 1.13184584178499) internal successors, (558), 519 states have internal predecessors, (558), 235 states have call successors, (241), 74 states have call predecessors, (241), 80 states have return successors, (460), 214 states have call predecessors, (460), 234 states have call successors, (460) [2022-10-17 10:15:20,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1259 transitions. [2022-10-17 10:15:20,795 INFO L240 hiAutomatonCegarLoop]: Abstraction has 808 states and 1259 transitions. [2022-10-17 10:15:20,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:15:20,796 INFO L428 stractBuchiCegarLoop]: Abstraction has 808 states and 1259 transitions. [2022-10-17 10:15:20,797 INFO L335 stractBuchiCegarLoop]: ======== Iteration 15 ============ [2022-10-17 10:15:20,797 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 808 states and 1259 transitions. [2022-10-17 10:15:20,804 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 160 [2022-10-17 10:15:20,804 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:15:20,804 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:15:20,805 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:20,805 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-10-17 10:15:20,805 INFO L748 eck$LassoCheckResult]: Stem: 16267#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 16236#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~ret9#1, main_#t~ret10#1, main_#t~post8#1, main_~k~0#1, main_#t~post7#1, main_~n~0#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 16237#L35 assume !(main_~x~0#1 < 0);main_~y~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 16266#L38 assume !(main_~y~0#1 < 0);main_~z~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~n~0#1 := 0; 16290#L41-3 assume !!(main_~n~0#1 <= main_~x~0#1);main_~k~0#1 := 0; 16432#L42-3 assume !!(main_~k~0#1 <= main_~x~0#1); 16431#L43 assume main_~k~0#1 <= main_~n~0#1;assume { :begin_inline_binomialCoefficient } true;binomialCoefficient_#in~n#1, binomialCoefficient_#in~k#1 := main_~n~0#1, main_~k~0#1;havoc binomialCoefficient_#res#1;havoc binomialCoefficient_#t~ret1#1, binomialCoefficient_#t~ret2#1, binomialCoefficient_#t~ret3#1, binomialCoefficient_~n#1, binomialCoefficient_~k#1;binomialCoefficient_~n#1 := binomialCoefficient_#in~n#1;binomialCoefficient_~k#1 := binomialCoefficient_#in~k#1; 16226#L30 call binomialCoefficient_#t~ret1#1 := fact(binomialCoefficient_~n#1);< 16227#factENTRY ~n := #in~n; 16451#L25 assume ~n <= 0;#res := 1; 16450#factFINAL assume true; 16448#factEXIT >#68#return; 16440#L30-1 call binomialCoefficient_#t~ret2#1 := fact(binomialCoefficient_~k#1);< 16441#factENTRY ~n := #in~n; 16444#L25 assume ~n <= 0;#res := 1; 16443#factFINAL assume true; 16439#factEXIT >#70#return; 16222#L30-2 call binomialCoefficient_#t~ret3#1 := fact(binomialCoefficient_~n#1 - binomialCoefficient_~k#1);< 16223#factENTRY ~n := #in~n; 16728#L25 assume !(~n <= 0); 16730#L26 call #t~ret0 := fact(~n - 1);< 16733#factENTRY ~n := #in~n; 16739#L25 assume ~n <= 0;#res := 1; 16741#factFINAL assume true; 16732#factEXIT >#66#return; 16731#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 16727#factFINAL assume true; 16721#factEXIT >#72#return; 16722#L30-3 binomialCoefficient_#res#1 := (if binomialCoefficient_#t~ret1#1 < 0 && 0 != binomialCoefficient_#t~ret1#1 % (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) then (if binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1 < 0 then binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) - 1 else 1 + binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1)) else binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1));havoc binomialCoefficient_#t~ret1#1;havoc binomialCoefficient_#t~ret2#1;havoc binomialCoefficient_#t~ret3#1; 16784#L30-4 main_#t~ret9#1 := binomialCoefficient_#res#1;assume { :end_inline_binomialCoefficient } true;havoc main_#t~ret9#1; 16782#L42-2 main_#t~post8#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post8#1;havoc main_#t~post8#1; 16781#L42-3 assume !!(main_~k~0#1 <= main_~x~0#1); 16780#L43 assume !(main_~k~0#1 <= main_~n~0#1);assume { :begin_inline_binomialCoefficient } true;binomialCoefficient_#in~n#1, binomialCoefficient_#in~k#1 := main_~k~0#1, main_~n~0#1;havoc binomialCoefficient_#res#1;havoc binomialCoefficient_#t~ret1#1, binomialCoefficient_#t~ret2#1, binomialCoefficient_#t~ret3#1, binomialCoefficient_~n#1, binomialCoefficient_~k#1;binomialCoefficient_~n#1 := binomialCoefficient_#in~n#1;binomialCoefficient_~k#1 := binomialCoefficient_#in~k#1; 16307#L30-5 call binomialCoefficient_#t~ret1#1 := fact(binomialCoefficient_~n#1);< 16285#factENTRY ~n := #in~n; 16777#L25 assume !(~n <= 0); 16773#L26 call #t~ret0 := fact(~n - 1);< 16243#factENTRY [2022-10-17 10:15:20,805 INFO L750 eck$LassoCheckResult]: Loop: 16243#factENTRY ~n := #in~n; 16802#L25 assume !(~n <= 0); 16772#L26 call #t~ret0 := fact(~n - 1);< 16243#factENTRY [2022-10-17 10:15:20,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:20,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1580397628, now seen corresponding path program 1 times [2022-10-17 10:15:20,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:20,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630408889] [2022-10-17 10:15:20,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:20,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:20,814 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:15:20,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2020966143] [2022-10-17 10:15:20,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:20,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:15:20,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:20,816 INFO L229 MonitoredProcess]: Starting monitored process 115 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:15:20,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2022-10-17 10:15:20,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:20,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-17 10:15:20,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:20,930 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-17 10:15:20,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:15:21,022 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-17 10:15:21,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:15:21,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630408889] [2022-10-17 10:15:21,023 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:15:21,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020966143] [2022-10-17 10:15:21,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020966143] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:15:21,023 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:15:21,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-10-17 10:15:21,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863903205] [2022-10-17 10:15:21,025 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:15:21,025 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-10-17 10:15:21,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:21,025 INFO L85 PathProgramCache]: Analyzing trace with hash 29980, now seen corresponding path program 2 times [2022-10-17 10:15:21,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:21,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400103871] [2022-10-17 10:15:21,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:21,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:21,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:15:21,029 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:15:21,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:15:21,033 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:15:21,064 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:15:21,064 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:15:21,064 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:15:21,065 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:15:21,065 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-10-17 10:15:21,065 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:21,065 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:15:21,065 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:15:21,065 INFO L133 ssoRankerPreferences]: Filename of dumped script: Binomial.c_Iteration15_Loop [2022-10-17 10:15:21,065 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:15:21,065 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:15:21,066 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:21,068 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:21,070 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:21,072 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:21,099 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:15:21,100 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-10-17 10:15:21,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:21,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:21,101 INFO L229 MonitoredProcess]: Starting monitored process 116 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:21,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (116)] Waiting until timeout for monitored process [2022-10-17 10:15:21,102 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:15:21,102 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:15:21,125 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:15:21,125 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fact_#res=0} Honda state: {fact_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:15:21,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (116)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:21,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:21,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:21,162 INFO L229 MonitoredProcess]: Starting monitored process 117 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:21,164 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:15:21,164 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:15:21,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (117)] Waiting until timeout for monitored process [2022-10-17 10:15:21,183 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:15:21,183 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fact_~n=0} Honda state: {fact_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:15:21,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (117)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:21,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:21,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:21,218 INFO L229 MonitoredProcess]: Starting monitored process 118 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:21,220 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:15:21,220 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:15:21,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (118)] Waiting until timeout for monitored process [2022-10-17 10:15:21,239 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:15:21,239 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fact_#t~ret0=0} Honda state: {fact_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:15:21,264 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (118)] Ended with exit code 0 [2022-10-17 10:15:21,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:21,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:21,265 INFO L229 MonitoredProcess]: Starting monitored process 119 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:21,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (119)] Waiting until timeout for monitored process [2022-10-17 10:15:21,266 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:15:21,266 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:15:21,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (119)] Ended with exit code 0 [2022-10-17 10:15:21,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:21,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:21,298 INFO L229 MonitoredProcess]: Starting monitored process 120 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:21,302 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-10-17 10:15:21,302 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:15:21,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (120)] Waiting until timeout for monitored process [2022-10-17 10:15:21,336 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-10-17 10:15:21,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (120)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:21,338 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:15:21,338 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:15:21,338 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:15:21,338 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:15:21,338 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-10-17 10:15:21,338 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:21,338 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:15:21,338 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:15:21,338 INFO L133 ssoRankerPreferences]: Filename of dumped script: Binomial.c_Iteration15_Loop [2022-10-17 10:15:21,338 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:15:21,338 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:15:21,339 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:21,341 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:21,355 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:21,361 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:21,388 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:15:21,389 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-10-17 10:15:21,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:21,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:21,390 INFO L229 MonitoredProcess]: Starting monitored process 121 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:21,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (121)] Waiting until timeout for monitored process [2022-10-17 10:15:21,391 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:21,398 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:15:21,398 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:21,398 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:21,398 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:21,398 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:15:21,399 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:15:21,399 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:21,400 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:21,418 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (121)] Ended with exit code 0 [2022-10-17 10:15:21,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:21,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:21,419 INFO L229 MonitoredProcess]: Starting monitored process 122 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:21,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (122)] Waiting until timeout for monitored process [2022-10-17 10:15:21,420 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:21,427 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:15:21,427 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:21,427 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:21,427 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:21,427 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:15:21,428 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:15:21,428 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:21,428 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:21,447 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (122)] Ended with exit code 0 [2022-10-17 10:15:21,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:21,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:21,448 INFO L229 MonitoredProcess]: Starting monitored process 123 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:21,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (123)] Waiting until timeout for monitored process [2022-10-17 10:15:21,449 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:21,456 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:15:21,456 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:21,456 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:21,456 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:21,456 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:15:21,457 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:15:21,457 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:21,458 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-10-17 10:15:21,460 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-10-17 10:15:21,460 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-10-17 10:15:21,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:21,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:21,461 INFO L229 MonitoredProcess]: Starting monitored process 124 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:21,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (124)] Waiting until timeout for monitored process [2022-10-17 10:15:21,462 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-10-17 10:15:21,462 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-10-17 10:15:21,462 INFO L513 LassoAnalysis]: Proved termination. [2022-10-17 10:15:21,462 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fact_#in~n) = 1*fact_#in~n Supporting invariants [] [2022-10-17 10:15:21,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (123)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:21,482 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-10-17 10:15:21,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:21,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:21,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 14 conjunts are in the unsatisfiable core [2022-10-17 10:15:21,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:21,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (124)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:21,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:21,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 10:15:21,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:21,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:15:21,801 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2022-10-17 10:15:21,801 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 808 states and 1259 transitions. cyclomatic complexity: 473 Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-17 10:15:21,908 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 808 states and 1259 transitions. cyclomatic complexity: 473. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Result 880 states and 1343 transitions. Complement of second has 13 states. [2022-10-17 10:15:21,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2022-10-17 10:15:21,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-17 10:15:21,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 32 transitions. [2022-10-17 10:15:21,909 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 32 transitions. Stem has 37 letters. Loop has 3 letters. [2022-10-17 10:15:21,910 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:15:21,910 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-10-17 10:15:21,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:21,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:21,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 14 conjunts are in the unsatisfiable core [2022-10-17 10:15:21,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:22,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:22,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 10:15:22,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:22,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:15:22,162 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 3 loop predicates [2022-10-17 10:15:22,162 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 808 states and 1259 transitions. cyclomatic complexity: 473 Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-17 10:15:22,270 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 808 states and 1259 transitions. cyclomatic complexity: 473. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Result 880 states and 1343 transitions. Complement of second has 13 states. [2022-10-17 10:15:22,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2022-10-17 10:15:22,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-17 10:15:22,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 32 transitions. [2022-10-17 10:15:22,271 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 32 transitions. Stem has 37 letters. Loop has 3 letters. [2022-10-17 10:15:22,271 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:15:22,271 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-10-17 10:15:22,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:22,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:22,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 14 conjunts are in the unsatisfiable core [2022-10-17 10:15:22,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:22,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:22,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 10:15:22,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:22,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:15:22,546 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2022-10-17 10:15:22,546 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 808 states and 1259 transitions. cyclomatic complexity: 473 Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-17 10:15:22,657 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 808 states and 1259 transitions. cyclomatic complexity: 473. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Result 996 states and 1473 transitions. Complement of second has 16 states. [2022-10-17 10:15:22,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2022-10-17 10:15:22,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-17 10:15:22,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 40 transitions. [2022-10-17 10:15:22,659 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 40 transitions. Stem has 37 letters. Loop has 3 letters. [2022-10-17 10:15:22,659 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:15:22,659 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 40 transitions. Stem has 40 letters. Loop has 3 letters. [2022-10-17 10:15:22,660 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:15:22,660 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 40 transitions. Stem has 37 letters. Loop has 6 letters. [2022-10-17 10:15:22,660 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:15:22,660 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 996 states and 1473 transitions. [2022-10-17 10:15:22,675 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 154 [2022-10-17 10:15:22,687 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 996 states to 861 states and 1335 transitions. [2022-10-17 10:15:22,688 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 310 [2022-10-17 10:15:22,688 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 319 [2022-10-17 10:15:22,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 861 states and 1335 transitions. [2022-10-17 10:15:22,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-10-17 10:15:22,689 INFO L218 hiAutomatonCegarLoop]: Abstraction has 861 states and 1335 transitions. [2022-10-17 10:15:22,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states and 1335 transitions. [2022-10-17 10:15:22,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 811. [2022-10-17 10:15:22,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 811 states, 499 states have (on average 1.1322645290581161) internal successors, (565), 520 states have internal predecessors, (565), 230 states have call successors, (236), 76 states have call predecessors, (236), 82 states have return successors, (452), 214 states have call predecessors, (452), 230 states have call successors, (452) [2022-10-17 10:15:22,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 1253 transitions. [2022-10-17 10:15:22,723 INFO L240 hiAutomatonCegarLoop]: Abstraction has 811 states and 1253 transitions. [2022-10-17 10:15:22,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:15:22,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 10:15:22,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:15:22,724 INFO L87 Difference]: Start difference. First operand 811 states and 1253 transitions. Second operand has 10 states, 8 states have (on average 3.25) internal successors, (26), 10 states have internal predecessors, (26), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-10-17 10:15:22,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:22,999 INFO L93 Difference]: Finished difference Result 852 states and 1328 transitions. [2022-10-17 10:15:22,999 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 852 states and 1328 transitions. [2022-10-17 10:15:23,010 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 188 [2022-10-17 10:15:23,022 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 852 states to 818 states and 1288 transitions. [2022-10-17 10:15:23,022 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 328 [2022-10-17 10:15:23,022 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 328 [2022-10-17 10:15:23,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 818 states and 1288 transitions. [2022-10-17 10:15:23,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-10-17 10:15:23,023 INFO L218 hiAutomatonCegarLoop]: Abstraction has 818 states and 1288 transitions. [2022-10-17 10:15:23,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states and 1288 transitions. [2022-10-17 10:15:23,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 749. [2022-10-17 10:15:23,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 459 states have (on average 1.1263616557734204) internal successors, (517), 474 states have internal predecessors, (517), 216 states have call successors, (220), 72 states have call predecessors, (220), 74 states have return successors, (424), 202 states have call predecessors, (424), 216 states have call successors, (424) [2022-10-17 10:15:23,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1161 transitions. [2022-10-17 10:15:23,058 INFO L240 hiAutomatonCegarLoop]: Abstraction has 749 states and 1161 transitions. [2022-10-17 10:15:23,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:15:23,059 INFO L428 stractBuchiCegarLoop]: Abstraction has 749 states and 1161 transitions. [2022-10-17 10:15:23,060 INFO L335 stractBuchiCegarLoop]: ======== Iteration 16 ============ [2022-10-17 10:15:23,060 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 749 states and 1161 transitions. [2022-10-17 10:15:23,066 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 154 [2022-10-17 10:15:23,066 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:15:23,066 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:15:23,070 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [7, 7, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:23,070 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 6, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:23,070 INFO L748 eck$LassoCheckResult]: Stem: 22164#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 22136#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~ret9#1, main_#t~ret10#1, main_#t~post8#1, main_~k~0#1, main_#t~post7#1, main_~n~0#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 22137#L35 assume !(main_~x~0#1 < 0);main_~y~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 22163#L38 assume !(main_~y~0#1 < 0);main_~z~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~n~0#1 := 0; 22182#L41-3 assume !!(main_~n~0#1 <= main_~x~0#1);main_~k~0#1 := 0; 22332#L42-3 assume !!(main_~k~0#1 <= main_~x~0#1); 22329#L43 assume main_~k~0#1 <= main_~n~0#1;assume { :begin_inline_binomialCoefficient } true;binomialCoefficient_#in~n#1, binomialCoefficient_#in~k#1 := main_~n~0#1, main_~k~0#1;havoc binomialCoefficient_#res#1;havoc binomialCoefficient_#t~ret1#1, binomialCoefficient_#t~ret2#1, binomialCoefficient_#t~ret3#1, binomialCoefficient_~n#1, binomialCoefficient_~k#1;binomialCoefficient_~n#1 := binomialCoefficient_#in~n#1;binomialCoefficient_~k#1 := binomialCoefficient_#in~k#1; 22115#L30 call binomialCoefficient_#t~ret1#1 := fact(binomialCoefficient_~n#1);< 22116#factENTRY ~n := #in~n; 22524#L25 assume ~n <= 0;#res := 1; 22523#factFINAL assume true; 22520#factEXIT >#68#return; 22175#L30-1 call binomialCoefficient_#t~ret2#1 := fact(binomialCoefficient_~k#1);< 22176#factENTRY ~n := #in~n; 22836#L25 assume ~n <= 0;#res := 1; 22835#factFINAL assume true; 22834#factEXIT >#70#return; 22112#L30-2 call binomialCoefficient_#t~ret3#1 := fact(binomialCoefficient_~n#1 - binomialCoefficient_~k#1);< 22113#factENTRY ~n := #in~n; 22609#L25 assume ~n <= 0;#res := 1; 22607#factFINAL assume true; 22605#factEXIT >#72#return; 22606#L30-3 binomialCoefficient_#res#1 := (if binomialCoefficient_#t~ret1#1 < 0 && 0 != binomialCoefficient_#t~ret1#1 % (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) then (if binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1 < 0 then binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) - 1 else 1 + binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1)) else binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1));havoc binomialCoefficient_#t~ret1#1;havoc binomialCoefficient_#t~ret2#1;havoc binomialCoefficient_#t~ret3#1; 22158#L30-4 main_#t~ret9#1 := binomialCoefficient_#res#1;assume { :end_inline_binomialCoefficient } true;havoc main_#t~ret9#1; 22159#L42-2 main_#t~post8#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post8#1;havoc main_#t~post8#1; 22181#L42-3 assume !!(main_~k~0#1 <= main_~x~0#1); 22167#L43 assume !(main_~k~0#1 <= main_~n~0#1);assume { :begin_inline_binomialCoefficient } true;binomialCoefficient_#in~n#1, binomialCoefficient_#in~k#1 := main_~k~0#1, main_~n~0#1;havoc binomialCoefficient_#res#1;havoc binomialCoefficient_#t~ret1#1, binomialCoefficient_#t~ret2#1, binomialCoefficient_#t~ret3#1, binomialCoefficient_~n#1, binomialCoefficient_~k#1;binomialCoefficient_~n#1 := binomialCoefficient_#in~n#1;binomialCoefficient_~k#1 := binomialCoefficient_#in~k#1; 22104#L30-5 call binomialCoefficient_#t~ret1#1 := fact(binomialCoefficient_~n#1);< 22105#factENTRY ~n := #in~n; 22789#L25 assume ~n <= 0;#res := 1; 22788#factFINAL assume true; 22787#factEXIT >#74#return; 22765#L30-6 call binomialCoefficient_#t~ret2#1 := fact(binomialCoefficient_~k#1);< 22775#factENTRY ~n := #in~n; 22832#L25 assume ~n <= 0;#res := 1; 22829#factFINAL assume true; 22774#factEXIT >#76#return; 22767#L30-7 call binomialCoefficient_#t~ret3#1 := fact(binomialCoefficient_~n#1 - binomialCoefficient_~k#1);< 22769#factENTRY ~n := #in~n; 22847#L25 assume !(~n <= 0); 22120#L26 call #t~ret0 := fact(~n - 1);< 22142#factENTRY ~n := #in~n; 22850#L25 assume ~n <= 0;#res := 1; 22119#factFINAL assume true; 22122#factEXIT >#66#return; 22785#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 22766#factFINAL assume true; 22768#factEXIT >#78#return; 22322#L30-8 [2022-10-17 10:15:23,071 INFO L750 eck$LassoCheckResult]: Loop: 22322#L30-8 binomialCoefficient_#res#1 := (if binomialCoefficient_#t~ret1#1 < 0 && 0 != binomialCoefficient_#t~ret1#1 % (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) then (if binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1 < 0 then binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) - 1 else 1 + binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1)) else binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1));havoc binomialCoefficient_#t~ret1#1;havoc binomialCoefficient_#t~ret2#1;havoc binomialCoefficient_#t~ret3#1; 22145#L30-9 main_#t~ret10#1 := binomialCoefficient_#res#1;assume { :end_inline_binomialCoefficient } true;havoc main_#t~ret10#1; 22146#L42-2 main_#t~post8#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post8#1;havoc main_#t~post8#1; 22619#L42-3 assume !!(main_~k~0#1 <= main_~x~0#1); 22614#L43 assume !(main_~k~0#1 <= main_~n~0#1);assume { :begin_inline_binomialCoefficient } true;binomialCoefficient_#in~n#1, binomialCoefficient_#in~k#1 := main_~k~0#1, main_~n~0#1;havoc binomialCoefficient_#res#1;havoc binomialCoefficient_#t~ret1#1, binomialCoefficient_#t~ret2#1, binomialCoefficient_#t~ret3#1, binomialCoefficient_~n#1, binomialCoefficient_~k#1;binomialCoefficient_~n#1 := binomialCoefficient_#in~n#1;binomialCoefficient_~k#1 := binomialCoefficient_#in~k#1; 22615#L30-5 call binomialCoefficient_#t~ret1#1 := fact(binomialCoefficient_~n#1);< 22179#factENTRY ~n := #in~n; 22841#L25 assume !(~n <= 0); 22144#L26 call #t~ret0 := fact(~n - 1);< 22837#factENTRY ~n := #in~n; 22173#L25 assume ~n <= 0;#res := 1; 22174#factFINAL assume true; 22784#factEXIT >#66#return; 22786#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 22843#factFINAL assume true; 22842#factEXIT >#74#return; 22178#L30-6 call binomialCoefficient_#t~ret2#1 := fact(binomialCoefficient_~k#1);< 22179#factENTRY ~n := #in~n; 22841#L25 assume ~n <= 0;#res := 1; 22839#factFINAL assume true; 22838#factEXIT >#76#return; 22762#L30-7 call binomialCoefficient_#t~ret3#1 := fact(binomialCoefficient_~n#1 - binomialCoefficient_~k#1);< 22224#factENTRY ~n := #in~n; 22849#L25 assume !(~n <= 0); 22144#L26 call #t~ret0 := fact(~n - 1);< 22837#factENTRY ~n := #in~n; 22135#L25 assume !(~n <= 0); 22107#L26 call #t~ret0 := fact(~n - 1);< 22133#factENTRY ~n := #in~n; 22134#L25 assume ~n <= 0;#res := 1; 22840#factFINAL assume true; 22106#factEXIT >#66#return; 22108#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 22168#factFINAL assume true; 22846#factEXIT >#66#return; 22845#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 22844#factFINAL assume true; 22759#factEXIT >#78#return; 22322#L30-8 [2022-10-17 10:15:23,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:23,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1440088363, now seen corresponding path program 1 times [2022-10-17 10:15:23,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:23,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261207789] [2022-10-17 10:15:23,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:23,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:23,080 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:15:23,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1540129634] [2022-10-17 10:15:23,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:23,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:15:23,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:23,085 INFO L229 MonitoredProcess]: Starting monitored process 125 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:15:23,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2022-10-17 10:15:23,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:23,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 10:15:23,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:23,183 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-10-17 10:15:23,184 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:15:23,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:15:23,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261207789] [2022-10-17 10:15:23,184 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:15:23,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540129634] [2022-10-17 10:15:23,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540129634] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:23,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:23,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:15:23,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671946663] [2022-10-17 10:15:23,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:23,185 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-10-17 10:15:23,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:23,186 INFO L85 PathProgramCache]: Analyzing trace with hash -468350084, now seen corresponding path program 1 times [2022-10-17 10:15:23,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:23,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870684821] [2022-10-17 10:15:23,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:23,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:23,211 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:15:23,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1692522380] [2022-10-17 10:15:23,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:23,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:15:23,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:23,213 INFO L229 MonitoredProcess]: Starting monitored process 126 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:15:23,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2022-10-17 10:15:23,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:15:23,254 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:15:23,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:15:23,278 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:15:24,448 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:15:24,448 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:15:24,448 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:15:24,448 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:15:24,449 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-10-17 10:15:24,449 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:24,449 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:15:24,449 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:15:24,449 INFO L133 ssoRankerPreferences]: Filename of dumped script: Binomial.c_Iteration16_Loop [2022-10-17 10:15:24,449 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:15:24,449 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:15:24,453 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:24,489 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:24,491 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:24,493 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:24,495 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:24,606 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:15:24,606 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-10-17 10:15:24,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:24,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:24,616 INFO L229 MonitoredProcess]: Starting monitored process 127 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:24,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (127)] Waiting until timeout for monitored process [2022-10-17 10:15:24,617 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:15:24,618 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:15:24,653 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (127)] Ended with exit code 0 [2022-10-17 10:15:24,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:24,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:24,654 INFO L229 MonitoredProcess]: Starting monitored process 128 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:24,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (128)] Waiting until timeout for monitored process [2022-10-17 10:15:24,659 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-10-17 10:15:24,660 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:15:24,721 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-10-17 10:15:24,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (128)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:24,782 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:15:24,783 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:15:24,783 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:15:24,783 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:15:24,783 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-10-17 10:15:24,783 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:24,783 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:15:24,783 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:15:24,783 INFO L133 ssoRankerPreferences]: Filename of dumped script: Binomial.c_Iteration16_Loop [2022-10-17 10:15:24,783 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:15:24,783 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:15:24,785 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:24,789 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:24,838 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:24,840 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:24,842 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:15:24,937 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:15:24,937 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-10-17 10:15:24,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:24,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:24,938 INFO L229 MonitoredProcess]: Starting monitored process 129 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:24,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (129)] Waiting until timeout for monitored process [2022-10-17 10:15:24,941 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:24,948 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:15:24,948 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:24,948 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:24,949 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:24,949 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:15:24,949 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:15:24,949 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:24,958 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:15:24,980 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (129)] Ended with exit code 0 [2022-10-17 10:15:24,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:24,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:24,981 INFO L229 MonitoredProcess]: Starting monitored process 130 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:24,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (130)] Waiting until timeout for monitored process [2022-10-17 10:15:24,982 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:15:24,991 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:15:24,992 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:15:24,992 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:15:24,992 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:15:24,992 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:15:24,994 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:15:24,994 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:15:25,003 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-10-17 10:15:25,007 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-10-17 10:15:25,007 INFO L444 ModelExtractionUtils]: 8 out of 11 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-10-17 10:15:25,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:15:25,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:25,009 INFO L229 MonitoredProcess]: Starting monitored process 131 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:25,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (131)] Waiting until timeout for monitored process [2022-10-17 10:15:25,010 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-10-17 10:15:25,010 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-10-17 10:15:25,010 INFO L513 LassoAnalysis]: Proved termination. [2022-10-17 10:15:25,010 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0#1, ULTIMATE.start_main_~x~0#1) = -1*ULTIMATE.start_main_~k~0#1 + 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2022-10-17 10:15:25,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (130)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:25,031 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-10-17 10:15:25,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:25,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:25,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-17 10:15:25,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:25,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (131)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:25,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-17 10:15:25,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:25,552 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-10-17 10:15:25,553 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 4 loop predicates [2022-10-17 10:15:25,553 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 749 states and 1161 transitions. cyclomatic complexity: 428 Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2022-10-17 10:15:25,680 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 749 states and 1161 transitions. cyclomatic complexity: 428. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Result 1068 states and 1533 transitions. Complement of second has 13 states. [2022-10-17 10:15:25,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2022-10-17 10:15:25,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2022-10-17 10:15:25,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 51 transitions. [2022-10-17 10:15:25,683 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 51 transitions. Stem has 48 letters. Loop has 38 letters. [2022-10-17 10:15:25,685 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:15:25,685 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 51 transitions. Stem has 86 letters. Loop has 38 letters. [2022-10-17 10:15:25,686 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:15:25,686 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 51 transitions. Stem has 48 letters. Loop has 76 letters. [2022-10-17 10:15:25,690 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:15:25,690 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1068 states and 1533 transitions. [2022-10-17 10:15:25,703 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 145 [2022-10-17 10:15:25,713 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1068 states to 699 states and 1075 transitions. [2022-10-17 10:15:25,713 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 207 [2022-10-17 10:15:25,714 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 207 [2022-10-17 10:15:25,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 699 states and 1075 transitions. [2022-10-17 10:15:25,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-10-17 10:15:25,714 INFO L218 hiAutomatonCegarLoop]: Abstraction has 699 states and 1075 transitions. [2022-10-17 10:15:25,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states and 1075 transitions. [2022-10-17 10:15:25,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 687. [2022-10-17 10:15:25,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 423 states have (on average 1.1371158392434988) internal successors, (481), 436 states have internal predecessors, (481), 195 states have call successors, (197), 64 states have call predecessors, (197), 69 states have return successors, (384), 186 states have call predecessors, (384), 195 states have call successors, (384) [2022-10-17 10:15:25,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1062 transitions. [2022-10-17 10:15:25,742 INFO L240 hiAutomatonCegarLoop]: Abstraction has 687 states and 1062 transitions. [2022-10-17 10:15:25,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:15:25,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:15:25,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:15:25,743 INFO L87 Difference]: Start difference. First operand 687 states and 1062 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-10-17 10:15:25,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:25,917 INFO L93 Difference]: Finished difference Result 655 states and 949 transitions. [2022-10-17 10:15:25,917 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 655 states and 949 transitions. [2022-10-17 10:15:25,925 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 137 [2022-10-17 10:15:25,932 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 655 states to 572 states and 848 transitions. [2022-10-17 10:15:25,932 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 220 [2022-10-17 10:15:25,933 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 220 [2022-10-17 10:15:25,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 572 states and 848 transitions. [2022-10-17 10:15:25,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-10-17 10:15:25,934 INFO L218 hiAutomatonCegarLoop]: Abstraction has 572 states and 848 transitions. [2022-10-17 10:15:25,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states and 848 transitions. [2022-10-17 10:15:25,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 524. [2022-10-17 10:15:25,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 334 states have (on average 1.1437125748502994) internal successors, (382), 338 states have internal predecessors, (382), 146 states have call successors, (146), 43 states have call predecessors, (146), 44 states have return successors, (260), 142 states have call predecessors, (260), 146 states have call successors, (260) [2022-10-17 10:15:25,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 788 transitions. [2022-10-17 10:15:25,961 INFO L240 hiAutomatonCegarLoop]: Abstraction has 524 states and 788 transitions. [2022-10-17 10:15:25,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 10:15:25,963 INFO L428 stractBuchiCegarLoop]: Abstraction has 524 states and 788 transitions. [2022-10-17 10:15:25,963 INFO L335 stractBuchiCegarLoop]: ======== Iteration 17 ============ [2022-10-17 10:15:25,963 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 524 states and 788 transitions. [2022-10-17 10:15:25,967 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 115 [2022-10-17 10:15:25,967 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:15:25,967 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:15:25,969 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [8, 8, 6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:25,969 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [15, 15, 9, 6, 6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:25,969 INFO L748 eck$LassoCheckResult]: Stem: 25807#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 25775#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~ret9#1, main_#t~ret10#1, main_#t~post8#1, main_~k~0#1, main_#t~post7#1, main_~n~0#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 25776#L35 assume !(main_~x~0#1 < 0);main_~y~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 25806#L38 assume !(main_~y~0#1 < 0);main_~z~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~n~0#1 := 0; 25792#L41-3 assume !!(main_~n~0#1 <= main_~x~0#1);main_~k~0#1 := 0; 25793#L42-3 assume !!(main_~k~0#1 <= main_~x~0#1); 26041#L43 assume main_~k~0#1 <= main_~n~0#1;assume { :begin_inline_binomialCoefficient } true;binomialCoefficient_#in~n#1, binomialCoefficient_#in~k#1 := main_~n~0#1, main_~k~0#1;havoc binomialCoefficient_#res#1;havoc binomialCoefficient_#t~ret1#1, binomialCoefficient_#t~ret2#1, binomialCoefficient_#t~ret3#1, binomialCoefficient_~n#1, binomialCoefficient_~k#1;binomialCoefficient_~n#1 := binomialCoefficient_#in~n#1;binomialCoefficient_~k#1 := binomialCoefficient_#in~k#1; 26037#L30 call binomialCoefficient_#t~ret1#1 := fact(binomialCoefficient_~n#1);< 26038#factENTRY ~n := #in~n; 26042#L25 assume ~n <= 0;#res := 1; 26040#factFINAL assume true; 26036#factEXIT >#68#return; 26032#L30-1 call binomialCoefficient_#t~ret2#1 := fact(binomialCoefficient_~k#1);< 26033#factENTRY ~n := #in~n; 26039#L25 assume ~n <= 0;#res := 1; 26035#factFINAL assume true; 26031#factEXIT >#70#return; 26024#L30-2 call binomialCoefficient_#t~ret3#1 := fact(binomialCoefficient_~n#1 - binomialCoefficient_~k#1);< 26025#factENTRY ~n := #in~n; 26055#L25 assume ~n <= 0;#res := 1; 26050#factFINAL assume true; 26023#factEXIT >#72#return; 26021#L30-3 binomialCoefficient_#res#1 := (if binomialCoefficient_#t~ret1#1 < 0 && 0 != binomialCoefficient_#t~ret1#1 % (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) then (if binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1 < 0 then binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) - 1 else 1 + binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1)) else binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1));havoc binomialCoefficient_#t~ret1#1;havoc binomialCoefficient_#t~ret2#1;havoc binomialCoefficient_#t~ret3#1; 26019#L30-4 main_#t~ret9#1 := binomialCoefficient_#res#1;assume { :end_inline_binomialCoefficient } true;havoc main_#t~ret9#1; 26018#L42-2 main_#t~post8#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post8#1;havoc main_#t~post8#1; 26017#L42-3 assume !!(main_~k~0#1 <= main_~x~0#1); 26015#L43 assume !(main_~k~0#1 <= main_~n~0#1);assume { :begin_inline_binomialCoefficient } true;binomialCoefficient_#in~n#1, binomialCoefficient_#in~k#1 := main_~k~0#1, main_~n~0#1;havoc binomialCoefficient_#res#1;havoc binomialCoefficient_#t~ret1#1, binomialCoefficient_#t~ret2#1, binomialCoefficient_#t~ret3#1, binomialCoefficient_~n#1, binomialCoefficient_~k#1;binomialCoefficient_~n#1 := binomialCoefficient_#in~n#1;binomialCoefficient_~k#1 := binomialCoefficient_#in~k#1; 25979#L30-5 call binomialCoefficient_#t~ret1#1 := fact(binomialCoefficient_~n#1);< 26014#factENTRY ~n := #in~n; 26034#L25 assume !(~n <= 0); 26028#L26 call #t~ret0 := fact(~n - 1);< 26030#factENTRY ~n := #in~n; 26046#L25 assume ~n <= 0;#res := 1; 26065#factFINAL assume true; 26062#factEXIT >#66#return; 26060#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 26059#factFINAL assume true; 25975#factEXIT >#74#return; 25977#L30-6 call binomialCoefficient_#t~ret2#1 := fact(binomialCoefficient_~k#1);< 25988#factENTRY ~n := #in~n; 25993#L25 assume ~n <= 0;#res := 1; 25991#factFINAL assume true; 25987#factEXIT >#76#return; 25978#L30-7 call binomialCoefficient_#t~ret3#1 := fact(binomialCoefficient_~n#1 - binomialCoefficient_~k#1);< 25980#factENTRY ~n := #in~n; 26066#L25 assume !(~n <= 0); 25994#L26 call #t~ret0 := fact(~n - 1);< 26063#factENTRY ~n := #in~n; 26067#L25 assume ~n <= 0;#res := 1; 26064#factFINAL assume true; 26061#factEXIT >#66#return; 26060#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 26059#factFINAL assume true; 25975#factEXIT >#78#return; 25970#L30-8 binomialCoefficient_#res#1 := (if binomialCoefficient_#t~ret1#1 < 0 && 0 != binomialCoefficient_#t~ret1#1 % (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) then (if binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1 < 0 then binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) - 1 else 1 + binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1)) else binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1));havoc binomialCoefficient_#t~ret1#1;havoc binomialCoefficient_#t~ret2#1;havoc binomialCoefficient_#t~ret3#1; 25930#L30-9 main_#t~ret10#1 := binomialCoefficient_#res#1;assume { :end_inline_binomialCoefficient } true;havoc main_#t~ret10#1; 25931#L42-2 main_#t~post8#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post8#1;havoc main_#t~post8#1; 25829#L42-3 assume !(main_~k~0#1 <= main_~x~0#1); 25830#L41-2 main_#t~post7#1 := main_~n~0#1;main_~n~0#1 := 1 + main_#t~post7#1;havoc main_#t~post7#1; 25899#L41-3 assume !!(main_~n~0#1 <= main_~x~0#1);main_~k~0#1 := 0; 25898#L42-3 [2022-10-17 10:15:25,969 INFO L750 eck$LassoCheckResult]: Loop: 25898#L42-3 assume !!(main_~k~0#1 <= main_~x~0#1); 25891#L43 assume main_~k~0#1 <= main_~n~0#1;assume { :begin_inline_binomialCoefficient } true;binomialCoefficient_#in~n#1, binomialCoefficient_#in~k#1 := main_~n~0#1, main_~k~0#1;havoc binomialCoefficient_#res#1;havoc binomialCoefficient_#t~ret1#1, binomialCoefficient_#t~ret2#1, binomialCoefficient_#t~ret3#1, binomialCoefficient_~n#1, binomialCoefficient_~k#1;binomialCoefficient_~n#1 := binomialCoefficient_#in~n#1;binomialCoefficient_~k#1 := binomialCoefficient_#in~k#1; 25765#L30 call binomialCoefficient_#t~ret1#1 := fact(binomialCoefficient_~n#1);< 25705#factENTRY ~n := #in~n; 25903#L25 assume !(~n <= 0); 25871#L26 call #t~ret0 := fact(~n - 1);< 25896#factENTRY ~n := #in~n; 25881#L25 assume ~n <= 0;#res := 1; 25879#factFINAL assume true; 25870#factEXIT >#66#return; 25811#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 25812#factFINAL assume true; 25906#factEXIT >#68#return; 25709#L30-1 call binomialCoefficient_#t~ret2#1 := fact(binomialCoefficient_~k#1);< 25770#factENTRY ~n := #in~n; 25771#L25 assume ~n <= 0;#res := 1; 25817#factFINAL assume true; 25708#factEXIT >#70#return; 25712#L30-2 call binomialCoefficient_#t~ret3#1 := fact(binomialCoefficient_~n#1 - binomialCoefficient_~k#1);< 25735#factENTRY ~n := #in~n; 25904#L25 assume !(~n <= 0); 25871#L26 call #t~ret0 := fact(~n - 1);< 25896#factENTRY ~n := #in~n; 25881#L25 assume ~n <= 0;#res := 1; 25879#factFINAL assume true; 25870#factEXIT >#66#return; 25811#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 25812#factFINAL assume true; 25906#factEXIT >#72#return; 25907#L30-3 binomialCoefficient_#res#1 := (if binomialCoefficient_#t~ret1#1 < 0 && 0 != binomialCoefficient_#t~ret1#1 % (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) then (if binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1 < 0 then binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) - 1 else 1 + binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1)) else binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1));havoc binomialCoefficient_#t~ret1#1;havoc binomialCoefficient_#t~ret2#1;havoc binomialCoefficient_#t~ret3#1; 25947#L30-4 main_#t~ret9#1 := binomialCoefficient_#res#1;assume { :end_inline_binomialCoefficient } true;havoc main_#t~ret9#1; 25945#L42-2 main_#t~post8#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post8#1;havoc main_#t~post8#1; 25943#L42-3 assume !!(main_~k~0#1 <= main_~x~0#1); 25941#L43 assume main_~k~0#1 <= main_~n~0#1;assume { :begin_inline_binomialCoefficient } true;binomialCoefficient_#in~n#1, binomialCoefficient_#in~k#1 := main_~n~0#1, main_~k~0#1;havoc binomialCoefficient_#res#1;havoc binomialCoefficient_#t~ret1#1, binomialCoefficient_#t~ret2#1, binomialCoefficient_#t~ret3#1, binomialCoefficient_~n#1, binomialCoefficient_~k#1;binomialCoefficient_~n#1 := binomialCoefficient_#in~n#1;binomialCoefficient_~k#1 := binomialCoefficient_#in~k#1; 25783#L30 call binomialCoefficient_#t~ret1#1 := fact(binomialCoefficient_~n#1);< 25738#factENTRY ~n := #in~n; 25910#L25 assume !(~n <= 0); 25781#L26 call #t~ret0 := fact(~n - 1);< 25784#factENTRY ~n := #in~n; 25881#L25 assume ~n <= 0;#res := 1; 25879#factFINAL assume true; 25870#factEXIT >#66#return; 25811#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 25812#factFINAL assume true; 25906#factEXIT >#68#return; 25747#L30-1 call binomialCoefficient_#t~ret2#1 := fact(binomialCoefficient_~k#1);< 25705#factENTRY ~n := #in~n; 25903#L25 assume !(~n <= 0); 25871#L26 call #t~ret0 := fact(~n - 1);< 25896#factENTRY ~n := #in~n; 25881#L25 assume ~n <= 0;#res := 1; 25879#factFINAL assume true; 25870#factEXIT >#66#return; 25811#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 25812#factFINAL assume true; 25906#factEXIT >#70#return; 25885#L30-2 call binomialCoefficient_#t~ret3#1 := fact(binomialCoefficient_~n#1 - binomialCoefficient_~k#1);< 25890#factENTRY ~n := #in~n; 25897#L25 assume ~n <= 0;#res := 1; 25889#factFINAL assume true; 25883#factEXIT >#72#return; 25796#L30-3 binomialCoefficient_#res#1 := (if binomialCoefficient_#t~ret1#1 < 0 && 0 != binomialCoefficient_#t~ret1#1 % (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) then (if binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1 < 0 then binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) - 1 else 1 + binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1)) else binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1));havoc binomialCoefficient_#t~ret1#1;havoc binomialCoefficient_#t~ret2#1;havoc binomialCoefficient_#t~ret3#1; 25797#L30-4 main_#t~ret9#1 := binomialCoefficient_#res#1;assume { :end_inline_binomialCoefficient } true;havoc main_#t~ret9#1; 25957#L42-2 main_#t~post8#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post8#1;havoc main_#t~post8#1; 25950#L42-3 assume !!(main_~k~0#1 <= main_~x~0#1); 25951#L43 assume !(main_~k~0#1 <= main_~n~0#1);assume { :begin_inline_binomialCoefficient } true;binomialCoefficient_#in~n#1, binomialCoefficient_#in~k#1 := main_~k~0#1, main_~n~0#1;havoc binomialCoefficient_#res#1;havoc binomialCoefficient_#t~ret1#1, binomialCoefficient_#t~ret2#1, binomialCoefficient_#t~ret3#1, binomialCoefficient_~n#1, binomialCoefficient_~k#1;binomialCoefficient_~n#1 := binomialCoefficient_#in~n#1;binomialCoefficient_~k#1 := binomialCoefficient_#in~k#1; 25704#L30-5 call binomialCoefficient_#t~ret1#1 := fact(binomialCoefficient_~n#1);< 25705#factENTRY ~n := #in~n; 25903#L25 assume !(~n <= 0); 25871#L26 call #t~ret0 := fact(~n - 1);< 25896#factENTRY ~n := #in~n; 25881#L25 assume ~n <= 0;#res := 1; 25879#factFINAL assume true; 25870#factEXIT >#66#return; 25811#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 25812#factFINAL assume true; 25906#factEXIT >#74#return; 25748#L30-6 call binomialCoefficient_#t~ret2#1 := fact(binomialCoefficient_~k#1);< 25705#factENTRY ~n := #in~n; 25903#L25 assume ~n <= 0;#res := 1; 25889#factFINAL assume true; 25883#factEXIT >#76#return; 25760#L30-7 call binomialCoefficient_#t~ret3#1 := fact(binomialCoefficient_~n#1 - binomialCoefficient_~k#1);< 25735#factENTRY ~n := #in~n; 25904#L25 assume !(~n <= 0); 25871#L26 call #t~ret0 := fact(~n - 1);< 25896#factENTRY ~n := #in~n; 25881#L25 assume ~n <= 0;#res := 1; 25879#factFINAL assume true; 25870#factEXIT >#66#return; 25811#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 25812#factFINAL assume true; 25906#factEXIT >#78#return; 25909#L30-8 binomialCoefficient_#res#1 := (if binomialCoefficient_#t~ret1#1 < 0 && 0 != binomialCoefficient_#t~ret1#1 % (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) then (if binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1 < 0 then binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) - 1 else 1 + binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1)) else binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1));havoc binomialCoefficient_#t~ret1#1;havoc binomialCoefficient_#t~ret2#1;havoc binomialCoefficient_#t~ret3#1; 25967#L30-9 main_#t~ret10#1 := binomialCoefficient_#res#1;assume { :end_inline_binomialCoefficient } true;havoc main_#t~ret10#1; 25966#L42-2 main_#t~post8#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post8#1;havoc main_#t~post8#1; 25965#L42-3 assume !(main_~k~0#1 <= main_~x~0#1); 25803#L41-2 main_#t~post7#1 := main_~n~0#1;main_~n~0#1 := 1 + main_#t~post7#1;havoc main_#t~post7#1; 25804#L41-3 assume !!(main_~n~0#1 <= main_~x~0#1);main_~k~0#1 := 0; 25898#L42-3 [2022-10-17 10:15:25,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:25,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1978773599, now seen corresponding path program 1 times [2022-10-17 10:15:25,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:25,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800946512] [2022-10-17 10:15:25,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:25,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:25,980 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:15:25,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1982614686] [2022-10-17 10:15:25,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:25,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:15:25,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:25,982 INFO L229 MonitoredProcess]: Starting monitored process 132 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:15:25,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2022-10-17 10:15:26,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:15:26,051 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:15:26,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:15:26,084 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:15:26,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:26,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1813506637, now seen corresponding path program 7 times [2022-10-17 10:15:26,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:26,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189817307] [2022-10-17 10:15:26,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:26,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:26,094 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:15:26,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [292360851] [2022-10-17 10:15:26,095 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-10-17 10:15:26,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:15:26,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:26,096 INFO L229 MonitoredProcess]: Starting monitored process 133 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:15:26,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Waiting until timeout for monitored process [2022-10-17 10:15:26,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:26,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 19 conjunts are in the unsatisfiable core [2022-10-17 10:15:26,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:26,350 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 230 proven. 82 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-10-17 10:15:26,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:15:26,827 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 79 proven. 134 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2022-10-17 10:15:26,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:15:26,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189817307] [2022-10-17 10:15:26,827 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:15:26,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292360851] [2022-10-17 10:15:26,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292360851] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:15:26,828 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:15:26,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 18 [2022-10-17 10:15:26,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788675464] [2022-10-17 10:15:26,828 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:15:26,828 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-10-17 10:15:26,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:15:26,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-17 10:15:26,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2022-10-17 10:15:26,830 INFO L87 Difference]: Start difference. First operand 524 states and 788 transitions. cyclomatic complexity: 274 Second operand has 18 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 16 states have internal predecessors, (45), 11 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (19), 8 states have call predecessors, (19), 11 states have call successors, (19) [2022-10-17 10:15:27,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:27,507 INFO L93 Difference]: Finished difference Result 668 states and 932 transitions. [2022-10-17 10:15:27,507 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 668 states and 932 transitions. [2022-10-17 10:15:27,514 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 127 [2022-10-17 10:15:27,522 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 668 states to 612 states and 854 transitions. [2022-10-17 10:15:27,522 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 230 [2022-10-17 10:15:27,523 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 230 [2022-10-17 10:15:27,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 612 states and 854 transitions. [2022-10-17 10:15:27,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-10-17 10:15:27,523 INFO L218 hiAutomatonCegarLoop]: Abstraction has 612 states and 854 transitions. [2022-10-17 10:15:27,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states and 854 transitions. [2022-10-17 10:15:27,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 482. [2022-10-17 10:15:27,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 314 states have (on average 1.10828025477707) internal successors, (348), 318 states have internal predecessors, (348), 124 states have call successors, (124), 43 states have call predecessors, (124), 44 states have return successors, (208), 120 states have call predecessors, (208), 124 states have call successors, (208) [2022-10-17 10:15:27,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 680 transitions. [2022-10-17 10:15:27,542 INFO L240 hiAutomatonCegarLoop]: Abstraction has 482 states and 680 transitions. [2022-10-17 10:15:27,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-17 10:15:27,543 INFO L428 stractBuchiCegarLoop]: Abstraction has 482 states and 680 transitions. [2022-10-17 10:15:27,543 INFO L335 stractBuchiCegarLoop]: ======== Iteration 18 ============ [2022-10-17 10:15:27,544 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 482 states and 680 transitions. [2022-10-17 10:15:27,547 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 95 [2022-10-17 10:15:27,547 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:15:27,547 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:15:27,549 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [8, 8, 6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:27,549 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [23, 23, 14, 14, 14, 14, 9, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:27,550 INFO L748 eck$LassoCheckResult]: Stem: 27591#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 27563#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~ret9#1, main_#t~ret10#1, main_#t~post8#1, main_~k~0#1, main_#t~post7#1, main_~n~0#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 27564#L35 assume !(main_~x~0#1 < 0);main_~y~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 27590#L38 assume !(main_~y~0#1 < 0);main_~z~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~n~0#1 := 0; 27575#L41-3 assume !!(main_~n~0#1 <= main_~x~0#1);main_~k~0#1 := 0; 27576#L42-3 assume !!(main_~k~0#1 <= main_~x~0#1); 27841#L43 assume main_~k~0#1 <= main_~n~0#1;assume { :begin_inline_binomialCoefficient } true;binomialCoefficient_#in~n#1, binomialCoefficient_#in~k#1 := main_~n~0#1, main_~k~0#1;havoc binomialCoefficient_#res#1;havoc binomialCoefficient_#t~ret1#1, binomialCoefficient_#t~ret2#1, binomialCoefficient_#t~ret3#1, binomialCoefficient_~n#1, binomialCoefficient_~k#1;binomialCoefficient_~n#1 := binomialCoefficient_#in~n#1;binomialCoefficient_~k#1 := binomialCoefficient_#in~k#1; 27549#L30 call binomialCoefficient_#t~ret1#1 := fact(binomialCoefficient_~n#1);< 27550#factENTRY ~n := #in~n; 27902#L25 assume ~n <= 0;#res := 1; 27900#factFINAL assume true; 27899#factEXIT >#68#return; 27607#L30-1 call binomialCoefficient_#t~ret2#1 := fact(binomialCoefficient_~k#1);< 27608#factENTRY ~n := #in~n; 27894#L25 assume ~n <= 0;#res := 1; 27893#factFINAL assume true; 27890#factEXIT >#70#return; 27545#L30-2 call binomialCoefficient_#t~ret3#1 := fact(binomialCoefficient_~n#1 - binomialCoefficient_~k#1);< 27546#factENTRY ~n := #in~n; 27932#L25 assume ~n <= 0;#res := 1; 27931#factFINAL assume true; 27930#factEXIT >#72#return; 27929#L30-3 binomialCoefficient_#res#1 := (if binomialCoefficient_#t~ret1#1 < 0 && 0 != binomialCoefficient_#t~ret1#1 % (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) then (if binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1 < 0 then binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) - 1 else 1 + binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1)) else binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1));havoc binomialCoefficient_#t~ret1#1;havoc binomialCoefficient_#t~ret2#1;havoc binomialCoefficient_#t~ret3#1; 27584#L30-4 main_#t~ret9#1 := binomialCoefficient_#res#1;assume { :end_inline_binomialCoefficient } true;havoc main_#t~ret9#1; 27585#L42-2 main_#t~post8#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post8#1;havoc main_#t~post8#1; 27962#L42-3 assume !!(main_~k~0#1 <= main_~x~0#1); 27949#L43 assume !(main_~k~0#1 <= main_~n~0#1);assume { :begin_inline_binomialCoefficient } true;binomialCoefficient_#in~n#1, binomialCoefficient_#in~k#1 := main_~k~0#1, main_~n~0#1;havoc binomialCoefficient_#res#1;havoc binomialCoefficient_#t~ret1#1, binomialCoefficient_#t~ret2#1, binomialCoefficient_#t~ret3#1, binomialCoefficient_~n#1, binomialCoefficient_~k#1;binomialCoefficient_~n#1 := binomialCoefficient_#in~n#1;binomialCoefficient_~k#1 := binomialCoefficient_#in~k#1; 27944#L30-5 call binomialCoefficient_#t~ret1#1 := fact(binomialCoefficient_~n#1);< 27948#factENTRY ~n := #in~n; 27990#L25 assume !(~n <= 0); 27986#L26 call #t~ret0 := fact(~n - 1);< 27989#factENTRY ~n := #in~n; 27996#L25 assume ~n <= 0;#res := 1; 27993#factFINAL assume true; 27991#factEXIT >#66#return; 27957#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 27953#factFINAL assume true; 27943#factEXIT >#74#return; 27941#L30-6 call binomialCoefficient_#t~ret2#1 := fact(binomialCoefficient_~k#1);< 27942#factENTRY ~n := #in~n; 27958#L25 assume ~n <= 0;#res := 1; 27956#factFINAL assume true; 27955#factEXIT >#76#return; 27945#L30-7 call binomialCoefficient_#t~ret3#1 := fact(binomialCoefficient_~n#1 - binomialCoefficient_~k#1);< 27954#factENTRY ~n := #in~n; 27994#L25 assume !(~n <= 0); 27959#L26 call #t~ret0 := fact(~n - 1);< 27961#factENTRY ~n := #in~n; 27995#L25 assume ~n <= 0;#res := 1; 27992#factFINAL assume true; 27960#factEXIT >#66#return; 27957#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 27953#factFINAL assume true; 27943#factEXIT >#78#return; 27947#L30-8 binomialCoefficient_#res#1 := (if binomialCoefficient_#t~ret1#1 < 0 && 0 != binomialCoefficient_#t~ret1#1 % (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) then (if binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1 < 0 then binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) - 1 else 1 + binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1)) else binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1));havoc binomialCoefficient_#t~ret1#1;havoc binomialCoefficient_#t~ret2#1;havoc binomialCoefficient_#t~ret3#1; 27928#L30-9 main_#t~ret10#1 := binomialCoefficient_#res#1;assume { :end_inline_binomialCoefficient } true;havoc main_#t~ret10#1; 27927#L42-2 main_#t~post8#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post8#1;havoc main_#t~post8#1; 27711#L42-3 assume !(main_~k~0#1 <= main_~x~0#1); 27588#L41-2 main_#t~post7#1 := main_~n~0#1;main_~n~0#1 := 1 + main_#t~post7#1;havoc main_#t~post7#1; 27589#L41-3 assume !!(main_~n~0#1 <= main_~x~0#1);main_~k~0#1 := 0; 27707#L42-3 [2022-10-17 10:15:27,550 INFO L750 eck$LassoCheckResult]: Loop: 27707#L42-3 assume !!(main_~k~0#1 <= main_~x~0#1); 27665#L43 assume main_~k~0#1 <= main_~n~0#1;assume { :begin_inline_binomialCoefficient } true;binomialCoefficient_#in~n#1, binomialCoefficient_#in~k#1 := main_~n~0#1, main_~k~0#1;havoc binomialCoefficient_#res#1;havoc binomialCoefficient_#t~ret1#1, binomialCoefficient_#t~ret2#1, binomialCoefficient_#t~ret3#1, binomialCoefficient_~n#1, binomialCoefficient_~k#1;binomialCoefficient_~n#1 := binomialCoefficient_#in~n#1;binomialCoefficient_~k#1 := binomialCoefficient_#in~k#1; 27655#L30 call binomialCoefficient_#t~ret1#1 := fact(binomialCoefficient_~n#1);< 27661#factENTRY ~n := #in~n; 27697#L25 assume !(~n <= 0); 27598#L26 call #t~ret0 := fact(~n - 1);< 27679#factENTRY ~n := #in~n; 27695#L25 assume !(~n <= 0); 27552#L26 call #t~ret0 := fact(~n - 1);< 27686#factENTRY ~n := #in~n; 27603#L25 assume ~n <= 0;#res := 1; 27551#factFINAL assume true; 27553#factEXIT >#66#return; 27596#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 27599#factFINAL assume true; 27677#factEXIT >#66#return; 27678#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 27706#factFINAL assume true; 27698#factEXIT >#68#return; 27537#L30-1 call binomialCoefficient_#t~ret2#1 := fact(binomialCoefficient_~k#1);< 27606#factENTRY ~n := #in~n; 27713#L25 assume ~n <= 0;#res := 1; 27718#factFINAL assume true; 27536#factEXIT >#70#return; 27540#L30-2 call binomialCoefficient_#t~ret3#1 := fact(binomialCoefficient_~n#1 - binomialCoefficient_~k#1);< 27533#factENTRY ~n := #in~n; 27696#L25 assume !(~n <= 0); 27598#L26 call #t~ret0 := fact(~n - 1);< 27679#factENTRY ~n := #in~n; 27695#L25 assume !(~n <= 0); 27552#L26 call #t~ret0 := fact(~n - 1);< 27686#factENTRY ~n := #in~n; 27603#L25 assume ~n <= 0;#res := 1; 27551#factFINAL assume true; 27553#factEXIT >#66#return; 27596#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 27599#factFINAL assume true; 27677#factEXIT >#66#return; 27678#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 27706#factFINAL assume true; 27698#factEXIT >#72#return; 27702#L30-3 binomialCoefficient_#res#1 := (if binomialCoefficient_#t~ret1#1 < 0 && 0 != binomialCoefficient_#t~ret1#1 % (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) then (if binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1 < 0 then binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) - 1 else 1 + binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1)) else binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1));havoc binomialCoefficient_#t~ret1#1;havoc binomialCoefficient_#t~ret2#1;havoc binomialCoefficient_#t~ret3#1; 27796#L30-4 main_#t~ret9#1 := binomialCoefficient_#res#1;assume { :end_inline_binomialCoefficient } true;havoc main_#t~ret9#1; 27794#L42-2 main_#t~post8#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post8#1;havoc main_#t~post8#1; 27792#L42-3 assume !!(main_~k~0#1 <= main_~x~0#1); 27790#L43 assume main_~k~0#1 <= main_~n~0#1;assume { :begin_inline_binomialCoefficient } true;binomialCoefficient_#in~n#1, binomialCoefficient_#in~k#1 := main_~n~0#1, main_~k~0#1;havoc binomialCoefficient_#res#1;havoc binomialCoefficient_#t~ret1#1, binomialCoefficient_#t~ret2#1, binomialCoefficient_#t~ret3#1, binomialCoefficient_~n#1, binomialCoefficient_~k#1;binomialCoefficient_~n#1 := binomialCoefficient_#in~n#1;binomialCoefficient_~k#1 := binomialCoefficient_#in~k#1; 27690#L30 call binomialCoefficient_#t~ret1#1 := fact(binomialCoefficient_~n#1);< 27533#factENTRY ~n := #in~n; 27696#L25 assume !(~n <= 0); 27598#L26 call #t~ret0 := fact(~n - 1);< 27679#factENTRY ~n := #in~n; 27695#L25 assume !(~n <= 0); 27552#L26 call #t~ret0 := fact(~n - 1);< 27686#factENTRY ~n := #in~n; 27603#L25 assume ~n <= 0;#res := 1; 27551#factFINAL assume true; 27553#factEXIT >#66#return; 27596#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 27599#factFINAL assume true; 27677#factEXIT >#66#return; 27678#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 27706#factFINAL assume true; 27698#factEXIT >#68#return; 27651#L30-1 call binomialCoefficient_#t~ret2#1 := fact(binomialCoefficient_~k#1);< 27661#factENTRY ~n := #in~n; 27697#L25 assume !(~n <= 0); 27598#L26 call #t~ret0 := fact(~n - 1);< 27679#factENTRY ~n := #in~n; 27681#L25 assume ~n <= 0;#res := 1; 27680#factFINAL assume true; 27673#factEXIT >#66#return; 27675#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 27704#factFINAL assume true; 27705#factEXIT >#70#return; 27646#L30-2 call binomialCoefficient_#t~ret3#1 := fact(binomialCoefficient_~n#1 - binomialCoefficient_~k#1);< 27661#factENTRY ~n := #in~n; 27697#L25 assume !(~n <= 0); 27598#L26 call #t~ret0 := fact(~n - 1);< 27679#factENTRY ~n := #in~n; 27695#L25 assume !(~n <= 0); 27552#L26 call #t~ret0 := fact(~n - 1);< 27686#factENTRY ~n := #in~n; 27603#L25 assume ~n <= 0;#res := 1; 27551#factFINAL assume true; 27553#factEXIT >#66#return; 27596#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 27599#factFINAL assume true; 27677#factEXIT >#66#return; 27678#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 27706#factFINAL assume true; 27698#factEXIT >#72#return; 27700#L30-3 binomialCoefficient_#res#1 := (if binomialCoefficient_#t~ret1#1 < 0 && 0 != binomialCoefficient_#t~ret1#1 % (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) then (if binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1 < 0 then binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) - 1 else 1 + binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1)) else binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1));havoc binomialCoefficient_#t~ret1#1;havoc binomialCoefficient_#t~ret2#1;havoc binomialCoefficient_#t~ret3#1; 27807#L30-4 main_#t~ret9#1 := binomialCoefficient_#res#1;assume { :end_inline_binomialCoefficient } true;havoc main_#t~ret9#1; 27798#L42-2 main_#t~post8#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post8#1;havoc main_#t~post8#1; 27797#L42-3 assume !!(main_~k~0#1 <= main_~x~0#1); 27787#L43 assume !(main_~k~0#1 <= main_~n~0#1);assume { :begin_inline_binomialCoefficient } true;binomialCoefficient_#in~n#1, binomialCoefficient_#in~k#1 := main_~k~0#1, main_~n~0#1;havoc binomialCoefficient_#res#1;havoc binomialCoefficient_#t~ret1#1, binomialCoefficient_#t~ret2#1, binomialCoefficient_#t~ret3#1, binomialCoefficient_~n#1, binomialCoefficient_~k#1;binomialCoefficient_~n#1 := binomialCoefficient_#in~n#1;binomialCoefficient_~k#1 := binomialCoefficient_#in~k#1; 27532#L30-5 call binomialCoefficient_#t~ret1#1 := fact(binomialCoefficient_~n#1);< 27533#factENTRY ~n := #in~n; 27696#L25 assume !(~n <= 0); 27598#L26 call #t~ret0 := fact(~n - 1);< 27679#factENTRY ~n := #in~n; 27695#L25 assume !(~n <= 0); 27552#L26 call #t~ret0 := fact(~n - 1);< 27686#factENTRY ~n := #in~n; 27603#L25 assume ~n <= 0;#res := 1; 27551#factFINAL assume true; 27553#factEXIT >#66#return; 27596#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 27599#factFINAL assume true; 27677#factEXIT >#66#return; 27678#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 27706#factFINAL assume true; 27698#factEXIT >#74#return; 27650#L30-6 call binomialCoefficient_#t~ret2#1 := fact(binomialCoefficient_~k#1);< 27661#factENTRY ~n := #in~n; 27697#L25 assume !(~n <= 0); 27598#L26 call #t~ret0 := fact(~n - 1);< 27679#factENTRY ~n := #in~n; 27695#L25 assume !(~n <= 0); 27552#L26 call #t~ret0 := fact(~n - 1);< 27686#factENTRY ~n := #in~n; 27603#L25 assume ~n <= 0;#res := 1; 27551#factFINAL assume true; 27553#factEXIT >#66#return; 27596#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 27599#factFINAL assume true; 27677#factEXIT >#66#return; 27678#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 27706#factFINAL assume true; 27698#factEXIT >#76#return; 27659#L30-7 call binomialCoefficient_#t~ret3#1 := fact(binomialCoefficient_~n#1 - binomialCoefficient_~k#1);< 27533#factENTRY ~n := #in~n; 27696#L25 assume !(~n <= 0); 27598#L26 call #t~ret0 := fact(~n - 1);< 27679#factENTRY ~n := #in~n; 27681#L25 assume ~n <= 0;#res := 1; 27680#factFINAL assume true; 27673#factEXIT >#66#return; 27675#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 27704#factFINAL assume true; 27705#factEXIT >#78#return; 27701#L30-8 binomialCoefficient_#res#1 := (if binomialCoefficient_#t~ret1#1 < 0 && 0 != binomialCoefficient_#t~ret1#1 % (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) then (if binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1 < 0 then binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1) - 1 else 1 + binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1)) else binomialCoefficient_#t~ret1#1 / (binomialCoefficient_#t~ret2#1 * binomialCoefficient_#t~ret3#1));havoc binomialCoefficient_#t~ret1#1;havoc binomialCoefficient_#t~ret2#1;havoc binomialCoefficient_#t~ret3#1; 27618#L30-9 main_#t~ret10#1 := binomialCoefficient_#res#1;assume { :end_inline_binomialCoefficient } true;havoc main_#t~ret10#1; 27619#L42-2 main_#t~post8#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post8#1;havoc main_#t~post8#1; 27614#L42-3 assume !(main_~k~0#1 <= main_~x~0#1); 27586#L41-2 main_#t~post7#1 := main_~n~0#1;main_~n~0#1 := 1 + main_#t~post7#1;havoc main_#t~post7#1; 27587#L41-3 assume !!(main_~n~0#1 <= main_~x~0#1);main_~k~0#1 := 0; 27707#L42-3 [2022-10-17 10:15:27,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:27,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1978773599, now seen corresponding path program 2 times [2022-10-17 10:15:27,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:27,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235851770] [2022-10-17 10:15:27,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:27,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:27,564 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:15:27,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1403613637] [2022-10-17 10:15:27,564 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:15:27,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:15:27,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:27,566 INFO L229 MonitoredProcess]: Starting monitored process 134 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:15:27,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Waiting until timeout for monitored process [2022-10-17 10:15:27,641 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-17 10:15:27,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-10-17 10:15:27,642 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:15:27,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:15:27,674 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:15:27,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:27,674 INFO L85 PathProgramCache]: Analyzing trace with hash 2085489747, now seen corresponding path program 8 times [2022-10-17 10:15:27,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:27,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501109190] [2022-10-17 10:15:27,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:27,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:27,689 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:15:27,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1172138987] [2022-10-17 10:15:27,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:15:27,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:15:27,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:27,691 INFO L229 MonitoredProcess]: Starting monitored process 135 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:15:27,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e9367f7-20e1-40b4-9913-450437532f47/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Waiting until timeout for monitored process [2022-10-17 10:15:27,777 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-17 10:15:27,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:15:27,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 21 conjunts are in the unsatisfiable core [2022-10-17 10:15:27,787 INFO L286 TraceCheckSpWp]: Computing forward predicates...