./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-bwb/and-assume.i --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_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/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_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-bwb/and-assume.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/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_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/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 8beb7be7ecdb66eb2007be5f75989c5fdc3ddad5d7117f2ded11c36f0703f203 --- 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 10:55:25,116 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:55:25,119 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:55:25,149 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:55:25,150 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:55:25,151 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:55:25,153 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:55:25,156 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:55:25,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:55:25,159 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:55:25,161 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:55:25,162 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:55:25,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:55:25,168 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:55:25,170 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:55:25,172 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:55:25,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:55:25,180 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:55:25,183 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:55:25,188 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:55:25,192 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:55:25,195 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:55:25,199 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:55:25,200 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:55:25,212 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:55:25,213 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:55:25,213 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:55:25,215 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:55:25,216 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:55:25,218 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:55:25,218 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:55:25,220 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:55:25,222 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:55:25,224 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:55:25,225 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:55:25,226 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:55:25,227 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:55:25,227 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:55:25,227 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:55:25,229 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:55:25,230 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:55:25,231 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-10-17 10:55:25,282 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:55:25,283 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:55:25,283 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:55:25,284 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:55:25,285 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:55:25,286 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:55:25,286 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:55:25,286 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-10-17 10:55:25,286 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-10-17 10:55:25,287 INFO L138 SettingsManager]: * Use old map elimination=false [2022-10-17 10:55:25,288 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-10-17 10:55:25,288 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-10-17 10:55:25,288 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-10-17 10:55:25,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:55:25,289 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 10:55:25,289 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:55:25,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:55:25,290 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-10-17 10:55:25,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-10-17 10:55:25,290 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-10-17 10:55:25,291 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:55:25,291 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-10-17 10:55:25,291 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:55:25,293 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-10-17 10:55:25,293 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:55:25,293 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:55:25,294 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:55:25,294 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:55:25,295 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-10-17 10:55:25,295 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_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8beb7be7ecdb66eb2007be5f75989c5fdc3ddad5d7117f2ded11c36f0703f203 [2022-10-17 10:55:25,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:55:25,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:55:25,630 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:55:25,632 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:55:25,633 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:55:25,634 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/termination-bwb/and-assume.i [2022-10-17 10:55:25,719 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/data/01804c117/a98ad2945d134ed394d3458c2d135449/FLAGa343aa1da [2022-10-17 10:55:26,274 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:55:26,275 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/sv-benchmarks/c/termination-bwb/and-assume.i [2022-10-17 10:55:26,289 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/data/01804c117/a98ad2945d134ed394d3458c2d135449/FLAGa343aa1da [2022-10-17 10:55:26,567 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/data/01804c117/a98ad2945d134ed394d3458c2d135449 [2022-10-17 10:55:26,569 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:55:26,571 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:55:26,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:55:26,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:55:26,577 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:55:26,578 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:55:26" (1/1) ... [2022-10-17 10:55:26,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5820f7d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:55:26, skipping insertion in model container [2022-10-17 10:55:26,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:55:26" (1/1) ... [2022-10-17 10:55:26,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:55:26,634 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:55:26,863 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-10-17 10:55:26,983 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:55:26,986 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:55:27,004 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-10-17 10:55:27,021 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:55:27,053 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:55:27,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:55:27 WrapperNode [2022-10-17 10:55:27,053 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:55:27,055 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:55:27,055 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:55:27,055 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:55:27,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:55:27" (1/1) ... [2022-10-17 10:55:27,077 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:55:27" (1/1) ... [2022-10-17 10:55:27,098 INFO L138 Inliner]: procedures = 111, calls = 3, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 31 [2022-10-17 10:55:27,099 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:55:27,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:55:27,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:55:27,100 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:55:27,111 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:55:27" (1/1) ... [2022-10-17 10:55:27,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:55:27" (1/1) ... [2022-10-17 10:55:27,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:55:27" (1/1) ... [2022-10-17 10:55:27,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:55:27" (1/1) ... [2022-10-17 10:55:27,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:55:27" (1/1) ... [2022-10-17 10:55:27,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:55:27" (1/1) ... [2022-10-17 10:55:27,137 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:55:27" (1/1) ... [2022-10-17 10:55:27,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:55:27" (1/1) ... [2022-10-17 10:55:27,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:55:27,149 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:55:27,149 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:55:27,150 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:55:27,152 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:55:27" (1/1) ... [2022-10-17 10:55:27,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:55:27,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:55:27,184 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:55:27,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-10-17 10:55:27,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:55:27,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:55:27,330 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:55:27,332 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:55:27,425 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:55:27,431 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:55:27,431 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 10:55:27,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:55:27 BoogieIcfgContainer [2022-10-17 10:55:27,433 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:55:27,434 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-10-17 10:55:27,434 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-10-17 10:55:27,438 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-10-17 10:55:27,439 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-10-17 10:55:27,439 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 17.10 10:55:26" (1/3) ... [2022-10-17 10:55:27,440 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7d489cfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.10 10:55:27, skipping insertion in model container [2022-10-17 10:55:27,440 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-10-17 10:55:27,441 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:55:27" (2/3) ... [2022-10-17 10:55:27,441 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7d489cfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.10 10:55:27, skipping insertion in model container [2022-10-17 10:55:27,441 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-10-17 10:55:27,441 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:55:27" (3/3) ... [2022-10-17 10:55:27,443 INFO L332 chiAutomizerObserver]: Analyzing ICFG and-assume.i [2022-10-17 10:55:27,499 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-10-17 10:55:27,500 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-10-17 10:55:27,500 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-10-17 10:55:27,500 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-10-17 10:55:27,500 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-10-17 10:55:27,500 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-10-17 10:55:27,500 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-10-17 10:55:27,501 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-10-17 10:55:27,505 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:55:27,525 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-10-17 10:55:27,525 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:55:27,526 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:55:27,533 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-10-17 10:55:27,533 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-10-17 10:55:27,533 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-10-17 10:55:27,534 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:55:27,536 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-10-17 10:55:27,536 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:55:27,536 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:55:27,537 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-10-17 10:55:27,537 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-10-17 10:55:27,546 INFO L748 eck$LassoCheckResult]: Stem: 3#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~nondet3#1, main_#t~nondet4#1, main_#t~post5#1, main_#t~nondet6#1, main_~a~0#1, main_~x~0#1;havoc main_~a~0#1;havoc main_~x~0#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1;main_~a~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 4#L535true assume !!(main_~a~0#1 > 0); 10#L538-8true [2022-10-17 10:55:27,547 INFO L750 eck$LassoCheckResult]: Loop: 10#L538-8true assume !!(main_~x~0#1 > 0);main_#t~post5#1 := main_~a~0#1;main_~a~0#1 := main_#t~post5#1 - 1;havoc main_#t~post5#1; 11#L538true assume 0 == main_~x~0#1 || 0 == main_~a~0#1;main_~x~0#1 := 0; 10#L538-8true [2022-10-17 10:55:27,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:55:27,553 INFO L85 PathProgramCache]: Analyzing trace with hash 29860, now seen corresponding path program 1 times [2022-10-17 10:55:27,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:55:27,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897343201] [2022-10-17 10:55:27,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:55:27,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:55:27,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:55:27,693 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:55:27,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:55:27,715 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:55:27,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:55:27,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1476, now seen corresponding path program 1 times [2022-10-17 10:55:27,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:55:27,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350683377] [2022-10-17 10:55:27,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:55:27,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:55:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:55:27,736 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:55:27,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:55:27,744 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:55:27,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:55:27,746 INFO L85 PathProgramCache]: Analyzing trace with hash 28695975, now seen corresponding path program 1 times [2022-10-17 10:55:27,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:55:27,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338335217] [2022-10-17 10:55:27,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:55:27,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:55:27,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:55:27,760 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:55:27,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:55:27,769 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:55:27,887 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:55:27,887 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:55:27,888 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:55:27,888 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:55:27,888 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-10-17 10:55:27,888 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:55:27,888 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:55:27,888 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:55:27,889 INFO L133 ssoRankerPreferences]: Filename of dumped script: and-assume.i_Iteration1_Loop [2022-10-17 10:55:27,889 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:55:27,889 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:55:27,912 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 10:55:27,925 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 10:55:27,931 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 10:55:27,937 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 10:55:27,945 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 10:55:27,954 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 10:55:28,039 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:55:28,040 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-10-17 10:55:28,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:55:28,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:55:28,048 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:55:28,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-10-17 10:55:28,080 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:55:28,080 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:55:28,107 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:55:28,107 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~P_PID_1=1} Honda state: {v_rep~unnamed0~0~P_PID_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:55:28,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:55:28,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:55:28,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:55:28,137 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:55:28,148 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:55:28,148 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:55:28,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-10-17 10:55:28,179 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:55:28,179 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~P_PGID_1=2} Honda state: {v_rep~unnamed0~0~P_PGID_1=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:55:28,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:55:28,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:55:28,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:55:28,219 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:55:28,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-10-17 10:55:28,223 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:55:28,223 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:55:28,240 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:55:28,240 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~P_ALL_1=0} Honda state: {v_rep~unnamed0~0~P_ALL_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:55:28,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:55:28,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:55:28,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:55:28,267 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:55:28,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-10-17 10:55:28,269 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:55:28,279 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:55:28,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-10-17 10:55:28,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:55:28,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:55:28,316 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:55:28,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-10-17 10:55:28,318 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-10-17 10:55:28,319 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:55:28,384 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-10-17 10:55:28,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-10-17 10:55:28,392 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:55:28,392 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:55:28,392 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:55:28,392 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:55:28,392 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-10-17 10:55:28,393 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:55:28,393 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:55:28,393 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:55:28,393 INFO L133 ssoRankerPreferences]: Filename of dumped script: and-assume.i_Iteration1_Loop [2022-10-17 10:55:28,393 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:55:28,393 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:55:28,396 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 10:55:28,400 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 10:55:28,404 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 10:55:28,415 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:55:28,418 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:55:28,425 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 10:55:28,493 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:55:28,497 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-10-17 10:55:28,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:55:28,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:55:28,503 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:55:28,511 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 10:55:28,521 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:55:28,521 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:55:28,522 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:55:28,522 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:55:28,527 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-10-17 10:55:28,527 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-10-17 10:55:28,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-10-17 10:55:28,550 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:55:28,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-10-17 10:55:28,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:55:28,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:55:28,587 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:55:28,592 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 10:55:28,602 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:55:28,602 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:55:28,602 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:55:28,602 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:55:28,606 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-10-17 10:55:28,606 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-10-17 10:55:28,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-10-17 10:55:28,627 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:55:28,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2022-10-17 10:55:28,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:55:28,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:55:28,663 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:55:28,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-10-17 10:55:28,668 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 10:55:28,675 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:55:28,675 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:55:28,675 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:55:28,675 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:55:28,675 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:55:28,677 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:55:28,677 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:55:28,703 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-10-17 10:55:28,727 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-10-17 10:55:28,728 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-10-17 10:55:28,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:55:28,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:55:28,734 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:55:28,755 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-10-17 10:55:28,756 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-10-17 10:55:28,756 INFO L513 LassoAnalysis]: Proved termination. [2022-10-17 10:55:28,756 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2022-10-17 10:55:28,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-10-17 10:55:28,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-10-17 10:55:28,797 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-10-17 10:55:28,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:55:28,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:55:28,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 10:55:28,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:55:28,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:55:28,879 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 10:55:28,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:55:28,924 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 10:55:28,959 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-10-17 10:55:28,960 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:55:29,063 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 46 states and 77 transitions. Complement of second has 9 states. [2022-10-17 10:55:29,065 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 10:55:29,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:55:29,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 47 transitions. [2022-10-17 10:55:29,073 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 47 transitions. Stem has 3 letters. Loop has 2 letters. [2022-10-17 10:55:29,075 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:55:29,075 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 47 transitions. Stem has 5 letters. Loop has 2 letters. [2022-10-17 10:55:29,075 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:55:29,075 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 47 transitions. Stem has 3 letters. Loop has 4 letters. [2022-10-17 10:55:29,076 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:55:29,077 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 77 transitions. [2022-10-17 10:55:29,081 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-10-17 10:55:29,086 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 26 states and 38 transitions. [2022-10-17 10:55:29,087 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2022-10-17 10:55:29,088 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2022-10-17 10:55:29,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 38 transitions. [2022-10-17 10:55:29,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-10-17 10:55:29,089 INFO L218 hiAutomatonCegarLoop]: Abstraction has 26 states and 38 transitions. [2022-10-17 10:55:29,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 38 transitions. [2022-10-17 10:55:29,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 15. [2022-10-17 10:55:29,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 14 states have internal predecessors, (22), 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 10:55:29,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 22 transitions. [2022-10-17 10:55:29,114 INFO L240 hiAutomatonCegarLoop]: Abstraction has 15 states and 22 transitions. [2022-10-17 10:55:29,114 INFO L428 stractBuchiCegarLoop]: Abstraction has 15 states and 22 transitions. [2022-10-17 10:55:29,114 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-10-17 10:55:29,114 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 22 transitions. [2022-10-17 10:55:29,116 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-10-17 10:55:29,116 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:55:29,116 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:55:29,116 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-10-17 10:55:29,117 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-10-17 10:55:29,117 INFO L748 eck$LassoCheckResult]: Stem: 103#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 104#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet3#1, main_#t~nondet4#1, main_#t~post5#1, main_#t~nondet6#1, main_~a~0#1, main_~x~0#1;havoc main_~a~0#1;havoc main_~x~0#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1;main_~a~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 111#L535 assume !!(main_~a~0#1 > 0); 112#L538-8 assume !!(main_~x~0#1 > 0);main_#t~post5#1 := main_~a~0#1;main_~a~0#1 := main_#t~post5#1 - 1;havoc main_#t~post5#1; 115#L538 [2022-10-17 10:55:29,117 INFO L750 eck$LassoCheckResult]: Loop: 115#L538 assume !(0 == main_~x~0#1 || 0 == main_~a~0#1); 113#L538-2 assume 1 == main_~x~0#1 && (0 == main_~a~0#1 || 1 == main_~a~0#1);main_~x~0#1 := main_~a~0#1; 106#L538-8 assume !!(main_~x~0#1 > 0);main_#t~post5#1 := main_~a~0#1;main_~a~0#1 := main_#t~post5#1 - 1;havoc main_#t~post5#1; 115#L538 [2022-10-17 10:55:29,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:55:29,118 INFO L85 PathProgramCache]: Analyzing trace with hash 925676, now seen corresponding path program 1 times [2022-10-17 10:55:29,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:55:29,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577721434] [2022-10-17 10:55:29,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:55:29,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:55:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:55:29,127 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:55:29,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:55:29,132 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:55:29,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:55:29,133 INFO L85 PathProgramCache]: Analyzing trace with hash 50732, now seen corresponding path program 1 times [2022-10-17 10:55:29,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:55:29,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588119616] [2022-10-17 10:55:29,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:55:29,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:55:29,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:55:29,142 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:55:29,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:55:29,149 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:55:29,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:55:29,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1807030881, now seen corresponding path program 1 times [2022-10-17 10:55:29,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:55:29,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204545065] [2022-10-17 10:55:29,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:55:29,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:55:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:55:29,161 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:55:29,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:55:29,170 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:55:29,227 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:55:29,228 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:55:29,228 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:55:29,228 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:55:29,228 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-10-17 10:55:29,228 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:55:29,228 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:55:29,229 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:55:29,229 INFO L133 ssoRankerPreferences]: Filename of dumped script: and-assume.i_Iteration2_Loop [2022-10-17 10:55:29,229 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:55:29,229 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:55:29,236 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 10:55:29,239 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 10:55:29,243 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 10:55:29,248 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 10:55:29,262 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 10:55:29,338 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:55:29,339 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-10-17 10:55:29,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:55:29,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:55:29,340 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:55:29,343 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:55:29,343 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:55:29,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-10-17 10:55:29,372 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:55:29,372 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5#1=0} Honda state: {ULTIMATE.start_main_#t~post5#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:55:29,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-10-17 10:55:29,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:55:29,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:55:29,412 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:55:29,419 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:55:29,419 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:55:29,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-10-17 10:55:29,439 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:55:29,439 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~P_PID_3=1} Honda state: {v_rep~unnamed0~0~P_PID_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:55:29,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-10-17 10:55:29,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:55:29,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:55:29,480 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:55:29,486 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:55:29,486 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:55:29,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-10-17 10:55:29,507 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:55:29,507 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~P_PGID_3=2} Honda state: {v_rep~unnamed0~0~P_PGID_3=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:55:29,544 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2022-10-17 10:55:29,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:55:29,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:55:29,546 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:55:29,556 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:55:29,556 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:55:29,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-10-17 10:55:29,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-10-17 10:55:29,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:55:29,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:55:29,600 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:55:29,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-10-17 10:55:29,602 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-10-17 10:55:29,602 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:55:29,664 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-10-17 10:55:29,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-10-17 10:55:29,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-10-17 10:55:29,706 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:55:29,706 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:55:29,706 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:55:29,706 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:55:29,706 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-10-17 10:55:29,706 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:55:29,706 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:55:29,707 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:55:29,707 INFO L133 ssoRankerPreferences]: Filename of dumped script: and-assume.i_Iteration2_Loop [2022-10-17 10:55:29,707 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:55:29,707 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:55:29,709 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 10:55:29,713 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 10:55:29,717 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 10:55:29,721 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 10:55:29,736 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 10:55:29,812 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:55:29,813 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-10-17 10:55:29,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:55:29,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:55:29,815 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:55:29,820 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 10:55:29,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-10-17 10:55:29,829 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:55:29,829 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:55:29,829 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:55:29,829 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:55:29,829 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:55:29,830 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:55:29,830 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:55:29,843 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:55:29,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-10-17 10:55:29,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:55:29,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:55:29,876 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:55:29,887 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 10:55:29,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-10-17 10:55:29,897 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:55:29,897 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:55:29,897 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:55:29,897 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:55:29,900 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-10-17 10:55:29,900 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-10-17 10:55:29,927 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:55:29,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-10-17 10:55:29,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:55:29,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:55:29,964 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:55:29,970 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 10:55:29,979 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:55:29,980 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:55:29,980 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:55:29,980 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:55:29,983 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-10-17 10:55:29,983 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-10-17 10:55:29,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-10-17 10:55:30,007 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:55:30,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-10-17 10:55:30,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:55:30,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:55:30,046 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:55:30,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-10-17 10:55:30,048 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 10:55:30,058 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:55:30,058 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:55:30,058 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:55:30,058 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:55:30,058 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:55:30,060 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:55:30,060 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:55:30,087 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-10-17 10:55:30,090 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-10-17 10:55:30,090 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-10-17 10:55:30,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:55:30,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:55:30,095 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:55:30,107 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-10-17 10:55:30,107 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-10-17 10:55:30,107 INFO L513 LassoAnalysis]: Proved termination. [2022-10-17 10:55:30,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-10-17 10:55:30,107 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~a~0#1) = 1*ULTIMATE.start_main_~a~0#1 Supporting invariants [] [2022-10-17 10:55:30,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-10-17 10:55:30,152 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-10-17 10:55:30,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:55:30,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:55:30,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 10:55:30,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:55:30,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:55:30,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-17 10:55:30,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:55:30,225 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 10:55:30,226 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-10-17 10:55:30,239 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 22 transitions. cyclomatic complexity: 9 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 10:55:30,280 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 22 transitions. cyclomatic complexity: 9. 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 35 states and 52 transitions. Complement of second has 6 states. [2022-10-17 10:55:30,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-10-17 10:55:30,283 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 10:55:30,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2022-10-17 10:55:30,284 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 3 letters. [2022-10-17 10:55:30,285 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:55:30,285 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 3 letters. [2022-10-17 10:55:30,286 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:55:30,286 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 6 letters. [2022-10-17 10:55:30,286 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:55:30,286 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 52 transitions. [2022-10-17 10:55:30,294 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-10-17 10:55:30,302 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 33 states and 47 transitions. [2022-10-17 10:55:30,303 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2022-10-17 10:55:30,303 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2022-10-17 10:55:30,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 47 transitions. [2022-10-17 10:55:30,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-10-17 10:55:30,303 INFO L218 hiAutomatonCegarLoop]: Abstraction has 33 states and 47 transitions. [2022-10-17 10:55:30,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states and 47 transitions. [2022-10-17 10:55:30,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2022-10-17 10:55:30,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 32 states have (on average 1.4375) internal successors, (46), 31 states have internal predecessors, (46), 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 10:55:30,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2022-10-17 10:55:30,310 INFO L240 hiAutomatonCegarLoop]: Abstraction has 32 states and 46 transitions. [2022-10-17 10:55:30,310 INFO L428 stractBuchiCegarLoop]: Abstraction has 32 states and 46 transitions. [2022-10-17 10:55:30,310 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-10-17 10:55:30,310 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 46 transitions. [2022-10-17 10:55:30,316 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-10-17 10:55:30,317 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:55:30,318 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:55:30,318 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-10-17 10:55:30,322 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2022-10-17 10:55:30,323 INFO L748 eck$LassoCheckResult]: Stem: 196#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 197#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet3#1, main_#t~nondet4#1, main_#t~post5#1, main_#t~nondet6#1, main_~a~0#1, main_~x~0#1;havoc main_~a~0#1;havoc main_~x~0#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1;main_~a~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 198#L535 assume !!(main_~a~0#1 > 0); 199#L538-8 assume !!(main_~x~0#1 > 0);main_#t~post5#1 := main_~a~0#1;main_~a~0#1 := main_#t~post5#1 - 1;havoc main_#t~post5#1; 222#L538 assume !(0 == main_~x~0#1 || 0 == main_~a~0#1); 205#L538-2 [2022-10-17 10:55:30,323 INFO L750 eck$LassoCheckResult]: Loop: 205#L538-2 assume !(1 == main_~x~0#1 && (0 == main_~a~0#1 || 1 == main_~a~0#1)); 200#L538-4 assume !((0 == main_~x~0#1 || 1 == main_~x~0#1) && 1 == main_~a~0#1); 201#L538-6 assume !(main_~x~0#1 >= 0 && main_~a~0#1 >= 0);main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 207#L538-8 assume !!(main_~x~0#1 > 0);main_#t~post5#1 := main_~a~0#1;main_~a~0#1 := main_#t~post5#1 - 1;havoc main_#t~post5#1; 209#L538 assume !(0 == main_~x~0#1 || 0 == main_~a~0#1); 205#L538-2 [2022-10-17 10:55:30,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:55:30,325 INFO L85 PathProgramCache]: Analyzing trace with hash 28695977, now seen corresponding path program 1 times [2022-10-17 10:55:30,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:55:30,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512429997] [2022-10-17 10:55:30,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:55:30,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:55:30,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:55:30,341 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:55:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:55:30,353 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:55:30,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:55:30,356 INFO L85 PathProgramCache]: Analyzing trace with hash 53599331, now seen corresponding path program 1 times [2022-10-17 10:55:30,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:55:30,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144735219] [2022-10-17 10:55:30,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:55:30,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:55:30,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:55:30,366 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:55:30,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:55:30,374 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:55:30,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:55:30,375 INFO L85 PathProgramCache]: Analyzing trace with hash 139216827, now seen corresponding path program 1 times [2022-10-17 10:55:30,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:55:30,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549921573] [2022-10-17 10:55:30,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:55:30,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:55:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:55:30,552 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 10:55:30,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:55:30,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549921573] [2022-10-17 10:55:30,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549921573] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:55:30,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:55:30,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:55:30,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820626862] [2022-10-17 10:55:30,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:55:30,638 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:55:30,638 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:55:30,638 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:55:30,639 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:55:30,639 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-10-17 10:55:30,639 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:55:30,639 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:55:30,639 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:55:30,639 INFO L133 ssoRankerPreferences]: Filename of dumped script: and-assume.i_Iteration3_Loop [2022-10-17 10:55:30,639 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:55:30,639 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:55:30,643 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 10:55:30,646 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 10:55:30,654 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 10:55:30,669 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 10:55:30,672 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 10:55:30,841 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:55:30,841 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-10-17 10:55:30,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:55:30,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:55:30,847 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:55:30,859 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:55:30,859 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:55:30,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-10-17 10:55:30,884 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:55:30,884 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5#1=0} Honda state: {ULTIMATE.start_main_#t~post5#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:55:30,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-10-17 10:55:30,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:55:30,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:55:30,922 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:55:30,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-10-17 10:55:30,924 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:55:30,924 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:55:30,938 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:55:30,938 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~P_PID_5=1} Honda state: {v_rep~unnamed0~0~P_PID_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:55:30,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-10-17 10:55:30,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:55:30,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:55:30,962 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:55:30,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-10-17 10:55:30,964 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:55:30,964 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:55:31,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-10-17 10:55:31,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:55:31,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:55:31,034 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:55:31,040 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-10-17 10:55:31,040 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:55:31,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-10-17 10:55:31,160 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:55:31,160 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=7, ULTIMATE.start_main_~a~0#1=-8, ULTIMATE.start_main_#t~nondet6#1=7} Honda state: {ULTIMATE.start_main_~x~0#1=7, ULTIMATE.start_main_~a~0#1=-8, ULTIMATE.start_main_#t~nondet6#1=7} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=0, ULTIMATE.start_main_~a~0#1=0, ULTIMATE.start_main_#t~nondet6#1=0}, {ULTIMATE.start_main_~x~0#1=0, ULTIMATE.start_main_~a~0#1=0, ULTIMATE.start_main_#t~nondet6#1=0}, {ULTIMATE.start_main_~x~0#1=0, ULTIMATE.start_main_~a~0#1=-1, ULTIMATE.start_main_#t~nondet6#1=0}] Lambdas: [3, 7, 1] Nus: [1, 0] [2022-10-17 10:55:31,182 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2022-10-17 10:55:31,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:55:31,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:55:31,184 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:55:31,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-10-17 10:55:31,188 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:55:31,188 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:55:31,201 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:55:31,201 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~P_PGID_5=2} Honda state: {v_rep~unnamed0~0~P_PGID_5=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:55:31,221 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2022-10-17 10:55:31,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:55:31,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:55:31,222 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:55:31,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-10-17 10:55:31,224 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:55:31,226 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:55:31,248 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:55:31,248 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~P_ALL_5=0} Honda state: {v_rep~unnamed0~0~P_ALL_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:55:31,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-10-17 10:55:31,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:55:31,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:55:31,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:55:31,285 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. cyclomatic complexity: 18 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:55:31,288 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2022-10-17 10:55:31,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:55:31,351 INFO L93 Difference]: Finished difference Result 50 states and 68 transitions. [2022-10-17 10:55:31,351 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 68 transitions. [2022-10-17 10:55:31,352 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-10-17 10:55:31,353 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 36 states and 50 transitions. [2022-10-17 10:55:31,353 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2022-10-17 10:55:31,354 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2022-10-17 10:55:31,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 50 transitions. [2022-10-17 10:55:31,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-10-17 10:55:31,354 INFO L218 hiAutomatonCegarLoop]: Abstraction has 36 states and 50 transitions. [2022-10-17 10:55:31,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 50 transitions. [2022-10-17 10:55:31,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2022-10-17 10:55:31,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 35 states have (on average 1.4) internal successors, (49), 34 states have internal predecessors, (49), 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 10:55:31,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 49 transitions. [2022-10-17 10:55:31,358 INFO L240 hiAutomatonCegarLoop]: Abstraction has 35 states and 49 transitions. [2022-10-17 10:55:31,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:55:31,360 INFO L428 stractBuchiCegarLoop]: Abstraction has 35 states and 49 transitions. [2022-10-17 10:55:31,360 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-10-17 10:55:31,360 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 49 transitions. [2022-10-17 10:55:31,361 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-10-17 10:55:31,361 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:55:31,361 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:55:31,362 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2022-10-17 10:55:31,362 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2022-10-17 10:55:31,362 INFO L748 eck$LassoCheckResult]: Stem: 289#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 290#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet3#1, main_#t~nondet4#1, main_#t~post5#1, main_#t~nondet6#1, main_~a~0#1, main_~x~0#1;havoc main_~a~0#1;havoc main_~x~0#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1;main_~a~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 295#L535 assume !!(main_~a~0#1 > 0); 296#L538-8 assume !!(main_~x~0#1 > 0);main_#t~post5#1 := main_~a~0#1;main_~a~0#1 := main_#t~post5#1 - 1;havoc main_#t~post5#1; 302#L538 assume 0 == main_~x~0#1 || 0 == main_~a~0#1;main_~x~0#1 := 0; 313#L538-8 assume !!(main_~x~0#1 > 0);main_#t~post5#1 := main_~a~0#1;main_~a~0#1 := main_#t~post5#1 - 1;havoc main_#t~post5#1; 311#L538 [2022-10-17 10:55:31,363 INFO L750 eck$LassoCheckResult]: Loop: 311#L538 assume !(0 == main_~x~0#1 || 0 == main_~a~0#1); 297#L538-2 assume !(1 == main_~x~0#1 && (0 == main_~a~0#1 || 1 == main_~a~0#1)); 291#L538-4 assume !((0 == main_~x~0#1 || 1 == main_~x~0#1) && 1 == main_~a~0#1); 292#L538-6 assume !(main_~x~0#1 >= 0 && main_~a~0#1 >= 0);main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 299#L538-8 assume !!(main_~x~0#1 > 0);main_#t~post5#1 := main_~a~0#1;main_~a~0#1 := main_#t~post5#1 - 1;havoc main_#t~post5#1; 311#L538 [2022-10-17 10:55:31,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:55:31,363 INFO L85 PathProgramCache]: Analyzing trace with hash 889575241, now seen corresponding path program 2 times [2022-10-17 10:55:31,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:55:31,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250536594] [2022-10-17 10:55:31,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:55:31,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:55:31,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:55:31,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:55:31,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:55:31,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250536594] [2022-10-17 10:55:31,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250536594] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:55:31,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:55:31,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:55:31,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882063323] [2022-10-17 10:55:31,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:55:31,389 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-10-17 10:55:31,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:55:31,389 INFO L85 PathProgramCache]: Analyzing trace with hash 48828581, now seen corresponding path program 2 times [2022-10-17 10:55:31,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:55:31,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521898037] [2022-10-17 10:55:31,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:55:31,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:55:31,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:55:31,396 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:55:31,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:55:31,407 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:55:31,475 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:55:31,475 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:55:31,475 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:55:31,475 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:55:31,476 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-10-17 10:55:31,476 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:55:31,476 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:55:31,476 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:55:31,476 INFO L133 ssoRankerPreferences]: Filename of dumped script: and-assume.i_Iteration4_Loop [2022-10-17 10:55:31,476 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:55:31,476 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:55:31,478 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 10:55:31,480 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 10:55:31,483 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 10:55:31,495 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 10:55:31,498 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 10:55:31,651 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:55:31,651 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-10-17 10:55:31,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:55:31,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:55:31,653 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:55:31,659 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:55:31,660 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:55:31,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-10-17 10:55:31,683 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:55:31,683 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5#1=0} Honda state: {ULTIMATE.start_main_#t~post5#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:55:31,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-10-17 10:55:31,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:55:31,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:55:31,704 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:55:31,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-10-17 10:55:31,706 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:55:31,707 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:55:31,721 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:55:31,721 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~P_ALL_6=0} Honda state: {v_rep~unnamed0~0~P_ALL_6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:55:31,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2022-10-17 10:55:31,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:55:31,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:55:31,748 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:55:31,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-10-17 10:55:31,753 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:55:31,753 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:55:31,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2022-10-17 10:55:31,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:55:31,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:55:31,807 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:55:31,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-10-17 10:55:31,808 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-10-17 10:55:31,809 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:55:31,914 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:55:31,914 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=1, ULTIMATE.start_main_~a~0#1=-4, ULTIMATE.start_main_#t~nondet6#1=7} Honda state: {ULTIMATE.start_main_~x~0#1=1, ULTIMATE.start_main_~a~0#1=-4, ULTIMATE.start_main_#t~nondet6#1=7} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=0, ULTIMATE.start_main_~a~0#1=-1, ULTIMATE.start_main_#t~nondet6#1=4}, {ULTIMATE.start_main_~x~0#1=4, ULTIMATE.start_main_~a~0#1=0, ULTIMATE.start_main_#t~nondet6#1=2}, {ULTIMATE.start_main_~x~0#1=2, ULTIMATE.start_main_~a~0#1=0, ULTIMATE.start_main_#t~nondet6#1=0}] Lambdas: [1, 0, 0] Nus: [1, 1] [2022-10-17 10:55:31,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2022-10-17 10:55:31,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:55:31,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:55:31,951 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:55:31,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-10-17 10:55:31,954 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:55:31,954 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:55:31,967 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:55:31,967 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~P_PGID_6=2} Honda state: {v_rep~unnamed0~0~P_PGID_6=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:55:31,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2022-10-17 10:55:31,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:55:31,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:55:31,992 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:55:31,993 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:55:31,994 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:55:31,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-10-17 10:55:32,006 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:55:32,006 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~P_PID_6=1} Honda state: {v_rep~unnamed0~0~P_PID_6=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:55:32,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2022-10-17 10:55:32,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:55:32,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:55:32,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:55:32,028 INFO L87 Difference]: Start difference. First operand 35 states and 49 transitions. cyclomatic complexity: 18 Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:55:32,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:55:32,054 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2022-10-17 10:55:32,054 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 11 transitions. [2022-10-17 10:55:32,054 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-10-17 10:55:32,055 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 0 states and 0 transitions. [2022-10-17 10:55:32,055 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-10-17 10:55:32,055 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-10-17 10:55:32,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-10-17 10:55:32,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:55:32,056 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-10-17 10:55:32,056 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-10-17 10:55:32,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:55:32,057 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-10-17 10:55:32,058 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-10-17 10:55:32,058 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-10-17 10:55:32,058 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-10-17 10:55:32,058 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-10-17 10:55:32,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.10 10:55:32 BoogieIcfgContainer [2022-10-17 10:55:32,066 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-10-17 10:55:32,067 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 10:55:32,067 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 10:55:32,067 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 10:55:32,068 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:55:27" (3/4) ... [2022-10-17 10:55:32,078 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-10-17 10:55:32,078 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 10:55:32,079 INFO L158 Benchmark]: Toolchain (without parser) took 5508.09ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 49.0MB in the beginning and 51.5MB in the end (delta: -2.5MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. [2022-10-17 10:55:32,080 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 90.2MB. Free memory is still 66.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:55:32,081 INFO L158 Benchmark]: CACSL2BoogieTranslator took 480.98ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 48.8MB in the beginning and 78.2MB in the end (delta: -29.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 10:55:32,082 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.18ms. Allocated memory is still 109.1MB. Free memory was 78.2MB in the beginning and 76.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 10:55:32,085 INFO L158 Benchmark]: Boogie Preprocessor took 48.02ms. Allocated memory is still 109.1MB. Free memory was 76.5MB in the beginning and 75.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 10:55:32,085 INFO L158 Benchmark]: RCFGBuilder took 284.51ms. Allocated memory is still 109.1MB. Free memory was 75.3MB in the beginning and 66.0MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 10:55:32,086 INFO L158 Benchmark]: BuchiAutomizer took 4632.55ms. Allocated memory is still 109.1MB. Free memory was 65.7MB in the beginning and 51.5MB in the end (delta: 14.3MB). Peak memory consumption was 15.8MB. Max. memory is 16.1GB. [2022-10-17 10:55:32,086 INFO L158 Benchmark]: Witness Printer took 11.44ms. Allocated memory is still 109.1MB. Free memory is still 51.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:55:32,088 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 90.2MB. Free memory is still 66.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 480.98ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 48.8MB in the beginning and 78.2MB in the end (delta: -29.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.18ms. Allocated memory is still 109.1MB. Free memory was 78.2MB in the beginning and 76.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.02ms. Allocated memory is still 109.1MB. Free memory was 76.5MB in the beginning and 75.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 284.51ms. Allocated memory is still 109.1MB. Free memory was 75.3MB in the beginning and 66.0MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 4632.55ms. Allocated memory is still 109.1MB. Free memory was 65.7MB in the beginning and 51.5MB in the end (delta: 14.3MB). Peak memory consumption was 15.8MB. Max. memory is 16.1GB. * Witness Printer took 11.44ms. Allocated memory is still 109.1MB. Free memory is still 51.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (2 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function x and consists of 6 locations. One deterministic module has affine ranking function a and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.5s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 3.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 13 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 34 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 32 mSDsluCounter, 33 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 82 IncrementalHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 23 mSDtfsCounter, 82 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc1 concLT0 SILN1 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital20 mio100 ax196 hnf100 lsp45 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq189 hnf91 smp100 dnf210 smp84 tf106 neg97 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 52ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 14 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-10-17 10:55:32,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1cec7c-3bf8-4fa2-9848-f8841bc68da5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE