./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-numeric/rec_counter3.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-numeric/rec_counter3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d7b4f33979632a981e739ff06b52fe01aa9fb175d5e5193b145052887f22f8a3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 09:27:20,106 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:27:20,108 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:27:20,159 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:27:20,160 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:27:20,164 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:27:20,167 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:27:20,169 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:27:20,172 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:27:20,177 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:27:20,179 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:27:20,181 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:27:20,181 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:27:20,183 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:27:20,185 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:27:20,186 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:27:20,188 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:27:20,189 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:27:20,190 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:27:20,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:27:20,204 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:27:20,206 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:27:20,207 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:27:20,208 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:27:20,218 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:27:20,218 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:27:20,218 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:27:20,220 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:27:20,221 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:27:20,222 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:27:20,222 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:27:20,223 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:27:20,225 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:27:20,225 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:27:20,226 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:27:20,227 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:27:20,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:27:20,228 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:27:20,228 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:27:20,229 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:27:20,230 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:27:20,231 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-11-20 09:27:20,269 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:27:20,270 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:27:20,270 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:27:20,271 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:27:20,272 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:27:20,273 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:27:20,273 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:27:20,273 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-20 09:27:20,273 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-20 09:27:20,274 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-20 09:27:20,275 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-20 09:27:20,275 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-20 09:27:20,275 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-20 09:27:20,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:27:20,276 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 09:27:20,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:27:20,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:27:20,277 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-20 09:27:20,277 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-20 09:27:20,277 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-20 09:27:20,278 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 09:27:20,278 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-20 09:27:20,278 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:27:20,278 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-20 09:27:20,279 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:27:20,279 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:27:20,279 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:27:20,279 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:27:20,281 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-20 09:27:20,282 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_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7b4f33979632a981e739ff06b52fe01aa9fb175d5e5193b145052887f22f8a3 [2022-11-20 09:27:20,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:27:20,657 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:27:20,660 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:27:20,661 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:27:20,662 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:27:20,663 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/termination-numeric/rec_counter3.c [2022-11-20 09:27:23,754 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:27:23,918 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:27:23,918 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/sv-benchmarks/c/termination-numeric/rec_counter3.c [2022-11-20 09:27:23,924 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/data/475a33881/0d6743cf8a5746ae8038f788dd7cd999/FLAG580bb9e64 [2022-11-20 09:27:23,944 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/data/475a33881/0d6743cf8a5746ae8038f788dd7cd999 [2022-11-20 09:27:23,947 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:27:23,948 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:27:23,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:27:23,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:27:23,960 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:27:23,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:23" (1/1) ... [2022-11-20 09:27:23,962 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55abfa06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:23, skipping insertion in model container [2022-11-20 09:27:23,963 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:23" (1/1) ... [2022-11-20 09:27:23,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:27:23,985 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:27:24,186 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:27:24,193 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:27:24,209 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:27:24,224 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:27:24,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:24 WrapperNode [2022-11-20 09:27:24,225 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:27:24,226 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:27:24,227 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:27:24,227 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:27:24,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:24" (1/1) ... [2022-11-20 09:27:24,242 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:24" (1/1) ... [2022-11-20 09:27:24,259 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 14 [2022-11-20 09:27:24,260 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:27:24,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:27:24,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:27:24,264 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:27:24,273 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:24" (1/1) ... [2022-11-20 09:27:24,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:24" (1/1) ... [2022-11-20 09:27:24,275 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:24" (1/1) ... [2022-11-20 09:27:24,275 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:24" (1/1) ... [2022-11-20 09:27:24,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:24" (1/1) ... [2022-11-20 09:27:24,282 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:24" (1/1) ... [2022-11-20 09:27:24,283 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:24" (1/1) ... [2022-11-20 09:27:24,283 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:24" (1/1) ... [2022-11-20 09:27:24,284 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:27:24,287 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:27:24,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:27:24,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:27:24,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:24" (1/1) ... [2022-11-20 09:27:24,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:27:24,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:24,330 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:24,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-20 09:27:24,385 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2022-11-20 09:27:24,385 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2022-11-20 09:27:24,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:27:24,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:27:24,443 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:27:24,444 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:27:24,530 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:27:24,538 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:27:24,538 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 09:27:24,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:24 BoogieIcfgContainer [2022-11-20 09:27:24,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:27:24,541 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-20 09:27:24,541 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-20 09:27:24,550 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-20 09:27:24,551 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 09:27:24,551 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 09:27:23" (1/3) ... [2022-11-20 09:27:24,557 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@13c99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 09:27:24, skipping insertion in model container [2022-11-20 09:27:24,557 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 09:27:24,557 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:24" (2/3) ... [2022-11-20 09:27:24,560 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@13c99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 09:27:24, skipping insertion in model container [2022-11-20 09:27:24,560 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 09:27:24,560 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:24" (3/3) ... [2022-11-20 09:27:24,562 INFO L332 chiAutomizerObserver]: Analyzing ICFG rec_counter3.c [2022-11-20 09:27:24,628 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-20 09:27:24,628 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-20 09:27:24,629 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-20 09:27:24,629 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-20 09:27:24,629 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-20 09:27:24,629 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-20 09:27:24,629 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-20 09:27:24,629 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-20 09:27:24,633 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 17 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 09:27:24,652 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 5 [2022-11-20 09:27:24,653 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 09:27:24,653 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 09:27:24,659 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-11-20 09:27:24,660 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-20 09:27:24,660 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-20 09:27:24,660 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 17 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 09:27:24,662 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 5 [2022-11-20 09:27:24,662 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 09:27:24,663 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 09:27:24,663 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-11-20 09:27:24,663 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-20 09:27:24,671 INFO L748 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~i~0#1, main_~res~1#1;main_~i~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 8#L18true assume !(main_~i~0#1 <= 0); 16#L20true call main_#t~ret3#1 := rec(main_~i~0#1);< 11#recENTRYtrue [2022-11-20 09:27:24,672 INFO L750 eck$LassoCheckResult]: Loop: 11#recENTRYtrue ~a := #in~a; 5#L5true assume !(0 == ~a); 10#L8true call #t~ret0 := rec(~a - 1);< 11#recENTRYtrue [2022-11-20 09:27:24,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:24,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1572150, now seen corresponding path program 1 times [2022-11-20 09:27:24,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:24,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191586200] [2022-11-20 09:27:24,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:24,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:24,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:27:24,793 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 09:27:24,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:27:24,830 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 09:27:24,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:24,836 INFO L85 PathProgramCache]: Analyzing trace with hash 29960, now seen corresponding path program 1 times [2022-11-20 09:27:24,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:24,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686117549] [2022-11-20 09:27:24,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:24,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:24,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:27:24,852 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 09:27:24,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:27:24,868 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 09:27:24,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:24,871 INFO L85 PathProgramCache]: Analyzing trace with hash -408719437, now seen corresponding path program 1 times [2022-11-20 09:27:24,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:24,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377349653] [2022-11-20 09:27:24,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:24,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:24,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:27:24,888 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 09:27:24,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:27:24,902 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 09:27:25,046 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 09:27:25,046 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 09:27:25,047 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 09:27:25,047 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 09:27:25,047 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 09:27:25,047 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:27:25,047 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 09:27:25,047 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 09:27:25,048 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter3.c_Iteration1_Loop [2022-11-20 09:27:25,048 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 09:27:25,048 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 09:27:25,064 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 09:27:25,074 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 09:27:25,077 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 09:27:25,081 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 09:27:25,084 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 09:27:25,088 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 09:27:25,110 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 09:27:25,232 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 09:27:25,233 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 09:27:25,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:27:25,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:25,246 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:25,248 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 09:27:25,248 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 09:27:25,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-20 09:27:25,299 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 09:27:25,299 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~ret0=0} Honda state: {rec_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 09:27:25,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:25,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:27:25,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:25,311 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:25,318 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 09:27:25,318 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 09:27:25,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-20 09:27:25,348 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 09:27:25,348 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~res~0=0} Honda state: {rec_~res~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 09:27:25,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:25,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:27:25,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:25,357 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:25,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-20 09:27:25,362 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 09:27:25,362 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 09:27:25,386 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 09:27:25,386 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~post1=0} Honda state: {rec_#t~post1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 09:27:25,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:25,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:27:25,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:25,394 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:25,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-20 09:27:25,405 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 09:27:25,405 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 09:27:25,430 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 09:27:25,431 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~a=0} Honda state: {rec_~a=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 09:27:25,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:25,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:27:25,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:25,442 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:25,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-20 09:27:25,446 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 09:27:25,446 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 09:27:25,465 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 09:27:25,466 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#res=0} Honda state: {rec_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 09:27:25,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:25,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:27:25,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:25,476 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:25,484 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 09:27:25,484 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 09:27:25,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-20 09:27:25,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:25,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:27:25,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:25,520 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:25,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-20 09:27:25,530 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 09:27:25,530 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 09:27:25,589 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 09:27:25,589 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#in~a=-4} Honda state: {rec_#in~a=-4} Generalized eigenvectors: [{rec_#in~a=-1}, {rec_#in~a=0}, {rec_#in~a=0}] Lambdas: [1, 7, 0] Nus: [1, 1] [2022-11-20 09:27:25,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:25,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:27:25,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:25,601 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:25,608 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 09:27:25,608 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 09:27:25,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-20 09:27:25,632 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 09:27:25,632 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~rescopy~0=0} Honda state: {rec_~rescopy~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 09:27:25,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:25,671 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 09:27:25,672 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 09:27:25,672 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 09:27:25,672 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 09:27:25,673 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 09:27:25,673 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:27:25,673 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 09:27:25,673 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 09:27:25,673 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter3.c_Iteration1_Lasso [2022-11-20 09:27:25,674 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 09:27:25,674 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 09:27:25,676 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 09:27:25,682 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 09:27:25,686 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 09:27:25,691 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 09:27:25,695 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 09:27:25,701 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 09:27:25,709 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 09:27:25,720 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 09:27:25,725 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 09:27:25,731 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 09:27:25,736 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 09:27:25,740 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 09:27:25,837 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 09:27:25,838 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 09:27:25,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:27:25,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:25,844 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:25,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-20 09:27:25,852 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 09:27:25,852 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 09:27:25,883 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 09:27:25,884 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~ret0=0} Honda state: {rec_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 09:27:25,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:25,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:27:25,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:25,894 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:25,910 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 09:27:25,910 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 09:27:25,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-20 09:27:25,926 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 09:27:25,927 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~post1=0} Honda state: {rec_#t~post1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 09:27:25,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:25,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:27:25,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:25,933 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:25,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-11-20 09:27:25,936 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 09:27:25,936 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 09:27:25,954 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 09:27:25,954 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2#1=0} Honda state: {ULTIMATE.start_main_#t~nondet2#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 09:27:25,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:25,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:27:25,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:25,959 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:25,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-20 09:27:25,962 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 09:27:25,963 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 09:27:25,974 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 09:27:25,975 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#res=0} Honda state: {rec_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 09:27:25,981 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2022-11-20 09:27:25,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:27:25,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:25,987 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:25,997 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 09:27:25,997 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 09:27:26,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-20 09:27:26,020 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 09:27:26,020 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_#t~ret4#1=0} Honda state: {ULTIMATE.start_#t~ret4#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 09:27:26,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:26,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:27:26,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:26,031 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:26,041 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 09:27:26,041 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 09:27:26,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-20 09:27:26,071 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 09:27:26,072 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~rescopy~0=0} Honda state: {rec_~rescopy~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 09:27:26,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:26,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:27:26,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:26,082 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:26,092 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 09:27:26,093 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 09:27:26,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-11-20 09:27:26,128 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 09:27:26,128 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~ret3#1=0} Honda state: {ULTIMATE.start_main_#t~ret3#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 09:27:26,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:26,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:27:26,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:26,137 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:26,148 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 09:27:26,148 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 09:27:26,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-11-20 09:27:26,172 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 09:27:26,172 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~a=0} Honda state: {rec_~a=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 09:27:26,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:26,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:27:26,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:26,181 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:26,192 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 09:27:26,192 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 09:27:26,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-11-20 09:27:26,206 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 09:27:26,206 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~res~0=0} Honda state: {rec_~res~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 09:27:26,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:26,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:27:26,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:26,210 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:26,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-11-20 09:27:26,213 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 09:27:26,214 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 09:27:26,226 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 09:27:26,226 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res#1=0} Honda state: {ULTIMATE.start_main_#res#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 09:27:26,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:26,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:27:26,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:26,230 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:26,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-11-20 09:27:26,244 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 09:27:26,244 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 09:27:26,256 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 09:27:26,256 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~res~1#1=0} Honda state: {ULTIMATE.start_main_~res~1#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 09:27:26,271 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2022-11-20 09:27:26,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:27:26,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:26,272 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:26,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-11-20 09:27:26,285 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 09:27:26,285 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 09:27:26,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:26,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:27:26,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:26,318 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:26,324 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 09:27:26,324 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 09:27:26,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-11-20 09:27:26,375 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 09:27:26,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:26,384 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 09:27:26,384 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 09:27:26,385 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 09:27:26,385 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 09:27:26,385 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 09:27:26,385 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:27:26,385 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 09:27:26,385 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 09:27:26,385 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter3.c_Iteration1_Lasso [2022-11-20 09:27:26,385 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 09:27:26,385 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 09:27:26,387 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 09:27:26,391 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 09:27:26,393 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 09:27:26,396 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 09:27:26,398 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 09:27:26,401 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 09:27:26,403 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 09:27:26,406 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 09:27:26,409 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 09:27:26,411 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 09:27:26,419 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 09:27:26,422 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 09:27:26,482 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 09:27:26,487 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 09:27:26,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:27:26,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:26,489 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:26,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-11-20 09:27:26,494 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 09:27:26,507 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 09:27:26,507 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 09:27:26,507 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 09:27:26,508 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 09:27:26,508 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 09:27:26,510 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 09:27:26,510 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 09:27:26,520 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 09:27:26,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:26,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:27:26,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:26,529 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:26,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-11-20 09:27:26,534 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 09:27:26,547 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 09:27:26,547 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 09:27:26,547 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 09:27:26,547 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 09:27:26,547 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 09:27:26,549 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 09:27:26,549 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 09:27:26,582 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 09:27:26,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:26,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:27:26,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:26,586 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:26,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-11-20 09:27:26,589 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 09:27:26,600 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 09:27:26,600 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 09:27:26,600 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 09:27:26,600 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 09:27:26,600 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 09:27:26,601 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 09:27:26,601 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 09:27:26,603 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 09:27:26,605 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2022-11-20 09:27:26,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:27:26,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:26,607 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:26,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-11-20 09:27:26,611 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 09:27:26,622 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 09:27:26,622 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 09:27:26,622 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 09:27:26,622 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 09:27:26,622 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 09:27:26,623 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 09:27:26,624 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 09:27:26,655 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 09:27:26,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2022-11-20 09:27:26,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:27:26,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:26,660 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:26,668 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 [2022-11-20 09:27:26,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-11-20 09:27:26,681 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 09:27:26,681 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 09:27:26,681 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 09:27:26,681 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 09:27:26,681 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 09:27:26,682 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 09:27:26,682 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 09:27:26,703 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 09:27:26,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:26,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:27:26,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:26,711 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:26,720 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 09:27:26,733 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 09:27:26,733 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 09:27:26,733 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 09:27:26,733 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 09:27:26,733 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 09:27:26,734 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 09:27:26,735 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 09:27:26,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-11-20 09:27:26,751 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 09:27:26,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:26,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:27:26,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:26,762 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:26,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-11-20 09:27:26,768 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 09:27:26,780 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 09:27:26,780 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 09:27:26,780 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 09:27:26,780 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 09:27:26,780 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 09:27:26,781 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 09:27:26,781 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 09:27:26,791 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 09:27:26,793 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2022-11-20 09:27:26,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:27:26,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:26,794 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:26,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-11-20 09:27:26,797 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 09:27:26,809 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 09:27:26,809 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 09:27:26,809 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 09:27:26,809 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 09:27:26,809 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 09:27:26,810 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 09:27:26,810 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 09:27:26,819 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 09:27:26,821 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2022-11-20 09:27:26,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:27:26,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:26,823 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:26,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-11-20 09:27:26,827 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 09:27:26,837 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 09:27:26,837 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 09:27:26,837 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 09:27:26,837 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 09:27:26,837 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 09:27:26,838 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 09:27:26,838 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 09:27:26,868 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 09:27:26,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:26,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:27:26,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:26,877 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:26,884 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 09:27:26,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-11-20 09:27:26,895 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 09:27:26,895 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 09:27:26,895 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2022-11-20 09:27:26,896 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 09:27:26,906 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2022-11-20 09:27:26,906 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2022-11-20 09:27:26,929 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 09:27:26,957 INFO L443 ModelExtractionUtils]: Simplification made 12 calls to the SMT solver. [2022-11-20 09:27:26,958 INFO L444 ModelExtractionUtils]: 1 out of 11 variables were initially zero. Simplification set additionally 7 variables to zero. [2022-11-20 09:27:26,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:27:26,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:27,011 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:27,071 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 09:27:27,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-11-20 09:27:27,092 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2022-11-20 09:27:27,092 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 09:27:27,093 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_#in~a) = 1*rec_#in~a Supporting invariants [1*rec_#in~a >= 0] [2022-11-20 09:27:27,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:27,106 INFO L156 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2022-11-20 09:27:27,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:27,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:27,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 09:27:27,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:27:27,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:27,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 09:27:27,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:27:27,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:27,331 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2022-11-20 09:27:27,333 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 17 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:27,477 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 17 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2). Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 35 states and 43 transitions. Complement of second has 13 states. [2022-11-20 09:27:27,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-20 09:27:27,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:27,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2022-11-20 09:27:27,486 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 4 letters. Loop has 3 letters. [2022-11-20 09:27:27,487 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 09:27:27,487 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 7 letters. Loop has 3 letters. [2022-11-20 09:27:27,487 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 09:27:27,487 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 4 letters. Loop has 6 letters. [2022-11-20 09:27:27,488 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 09:27:27,488 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 43 transitions. [2022-11-20 09:27:27,491 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2022-11-20 09:27:27,497 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 23 states and 30 transitions. [2022-11-20 09:27:27,498 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2022-11-20 09:27:27,498 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2022-11-20 09:27:27,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 30 transitions. [2022-11-20 09:27:27,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 09:27:27,499 INFO L218 hiAutomatonCegarLoop]: Abstraction has 23 states and 30 transitions. [2022-11-20 09:27:27,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 30 transitions. [2022-11-20 09:27:27,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2022-11-20 09:27:27,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 09:27:27,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2022-11-20 09:27:27,529 INFO L240 hiAutomatonCegarLoop]: Abstraction has 21 states and 26 transitions. [2022-11-20 09:27:27,530 INFO L428 stractBuchiCegarLoop]: Abstraction has 21 states and 26 transitions. [2022-11-20 09:27:27,530 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-20 09:27:27,530 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 26 transitions. [2022-11-20 09:27:27,531 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2022-11-20 09:27:27,531 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 09:27:27,531 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 09:27:27,532 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:27,532 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-11-20 09:27:27,532 INFO L748 eck$LassoCheckResult]: Stem: 119#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 120#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~i~0#1, main_~res~1#1;main_~i~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 128#L18 assume !(main_~i~0#1 <= 0); 122#L20 call main_#t~ret3#1 := rec(main_~i~0#1);< 131#recENTRY ~a := #in~a; 121#L5 assume 0 == ~a;#res := 0; 123#recFINAL assume true; 137#recEXIT >#48#return; 133#L20-1 main_~res~1#1 := main_#t~ret3#1;havoc main_#t~ret3#1; 134#L21-2 [2022-11-20 09:27:27,532 INFO L750 eck$LassoCheckResult]: Loop: 134#L21-2 assume !!(main_~res~1#1 < 1); 134#L21-2 [2022-11-20 09:27:27,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:27,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1937407319, now seen corresponding path program 1 times [2022-11-20 09:27:27,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:27,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927679748] [2022-11-20 09:27:27,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:27,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:27,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:27,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 09:27:27,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:27,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:27,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:27,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927679748] [2022-11-20 09:27:27,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927679748] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:27,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:27,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:27:27,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289946483] [2022-11-20 09:27:27,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:27,632 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-20 09:27:27,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:27,633 INFO L85 PathProgramCache]: Analyzing trace with hash 70, now seen corresponding path program 1 times [2022-11-20 09:27:27,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:27,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794908823] [2022-11-20 09:27:27,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:27,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:27,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:27:27,643 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 09:27:27,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:27:27,651 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 09:27:27,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:27,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:27:27,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:27:27,663 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. cyclomatic complexity: 8 Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 09:27:27,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:27,697 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2022-11-20 09:27:27,697 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 24 transitions. [2022-11-20 09:27:27,698 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2022-11-20 09:27:27,699 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 18 states and 21 transitions. [2022-11-20 09:27:27,699 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2022-11-20 09:27:27,699 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2022-11-20 09:27:27,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 21 transitions. [2022-11-20 09:27:27,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 09:27:27,699 INFO L218 hiAutomatonCegarLoop]: Abstraction has 18 states and 21 transitions. [2022-11-20 09:27:27,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 21 transitions. [2022-11-20 09:27:27,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-20 09:27:27,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 09:27:27,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2022-11-20 09:27:27,702 INFO L240 hiAutomatonCegarLoop]: Abstraction has 18 states and 21 transitions. [2022-11-20 09:27:27,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:27:27,703 INFO L428 stractBuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2022-11-20 09:27:27,703 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-20 09:27:27,703 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 21 transitions. [2022-11-20 09:27:27,704 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2022-11-20 09:27:27,704 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 09:27:27,704 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 09:27:27,705 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:27,705 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-11-20 09:27:27,705 INFO L748 eck$LassoCheckResult]: Stem: 175#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 176#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~i~0#1, main_~res~1#1;main_~i~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 184#L18 assume !(main_~i~0#1 <= 0); 181#L20 call main_#t~ret3#1 := rec(main_~i~0#1);< 187#recENTRY ~a := #in~a; 180#L5 assume !(0 == ~a); 178#L8 call #t~ret0 := rec(~a - 1);< 186#recENTRY ~a := #in~a; 177#L5 assume 0 == ~a;#res := 0; 179#recFINAL assume true; 190#recEXIT >#46#return; 185#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 182#L10-2 [2022-11-20 09:27:27,705 INFO L750 eck$LassoCheckResult]: Loop: 182#L10-2 assume !!(~rescopy~0 > 0);#t~post1 := ~rescopy~0;~rescopy~0 := #t~post1 - 1;havoc #t~post1; 182#L10-2 [2022-11-20 09:27:27,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:27,706 INFO L85 PathProgramCache]: Analyzing trace with hash 27203062, now seen corresponding path program 1 times [2022-11-20 09:27:27,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:27,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106597254] [2022-11-20 09:27:27,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:27,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:27,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:27:27,713 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 09:27:27,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:27:27,719 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 09:27:27,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:27,720 INFO L85 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 1 times [2022-11-20 09:27:27,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:27,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653901044] [2022-11-20 09:27:27,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:27,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:27,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:27:27,723 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 09:27:27,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:27:27,725 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 09:27:27,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:27,726 INFO L85 PathProgramCache]: Analyzing trace with hash 843294937, now seen corresponding path program 1 times [2022-11-20 09:27:27,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:27,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51145677] [2022-11-20 09:27:27,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:27,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:27,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:27,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:27:27,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:27,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 09:27:27,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:27,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51145677] [2022-11-20 09:27:27,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51145677] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:27,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:27,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 09:27:27,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016037512] [2022-11-20 09:27:27,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:27,811 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 09:27:27,811 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 09:27:27,811 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 09:27:27,811 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 09:27:27,811 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 09:27:27,811 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:27:27,811 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 09:27:27,811 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 09:27:27,811 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter3.c_Iteration3_Loop [2022-11-20 09:27:27,811 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 09:27:27,812 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 09:27:27,812 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 09:27:27,818 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 09:27:27,835 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 09:27:27,836 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 09:27:27,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:27:27,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:27,837 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:27,844 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 09:27:27,844 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 09:27:27,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-11-20 09:27:27,859 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2022-11-20 09:27:27,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:27:27,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:27,860 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:27,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-11-20 09:27:27,865 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 09:27:27,865 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 09:27:27,911 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 09:27:27,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:27,923 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 09:27:27,924 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 09:27:27,924 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 09:27:27,924 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 09:27:27,924 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 09:27:27,924 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:27:27,924 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 09:27:27,924 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 09:27:27,924 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter3.c_Iteration3_Loop [2022-11-20 09:27:27,924 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 09:27:27,924 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 09:27:27,925 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 09:27:27,928 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 09:27:27,956 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 09:27:27,956 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 09:27:27,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:27:27,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:27,957 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:27,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-11-20 09:27:27,964 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 09:27:27,977 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 09:27:27,977 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 09:27:27,977 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 09:27:27,977 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 09:27:27,978 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 09:27:27,978 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 09:27:27,978 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 09:27:27,987 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 09:27:27,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:27,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:27:27,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:27,992 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:27,996 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 09:27:28,008 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 09:27:28,008 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 09:27:28,009 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 09:27:28,009 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 09:27:28,009 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 09:27:28,010 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 09:27:28,010 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 09:27:28,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2022-11-20 09:27:28,019 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 09:27:28,024 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-20 09:27:28,024 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-20 09:27:28,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:27:28,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:28,031 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:28,032 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 09:27:28,033 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 09:27:28,033 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 09:27:28,033 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_~rescopy~0) = 1*rec_~rescopy~0 Supporting invariants [] [2022-11-20 09:27:28,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-11-20 09:27:28,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:28,038 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 09:27:28,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:28,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:28,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:28,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 09:27:28,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:27:28,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:28,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:28,253 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:27:28,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:27:28,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:28,254 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2022-11-20 09:27:28,254 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 6 Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 09:27:28,322 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 6. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 38 states and 50 transitions. Complement of second has 10 states. [2022-11-20 09:27:28,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2022-11-20 09:27:28,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 09:27:28,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2022-11-20 09:27:28,327 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 12 letters. Loop has 1 letters. [2022-11-20 09:27:28,328 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 09:27:28,328 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 13 letters. Loop has 1 letters. [2022-11-20 09:27:28,329 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 09:27:28,329 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 12 letters. Loop has 2 letters. [2022-11-20 09:27:28,329 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 09:27:28,330 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 50 transitions. [2022-11-20 09:27:28,334 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2022-11-20 09:27:28,338 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 32 states and 42 transitions. [2022-11-20 09:27:28,339 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2022-11-20 09:27:28,339 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2022-11-20 09:27:28,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 42 transitions. [2022-11-20 09:27:28,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 09:27:28,340 INFO L218 hiAutomatonCegarLoop]: Abstraction has 32 states and 42 transitions. [2022-11-20 09:27:28,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 42 transitions. [2022-11-20 09:27:28,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-11-20 09:27:28,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 09:27:28,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2022-11-20 09:27:28,349 INFO L240 hiAutomatonCegarLoop]: Abstraction has 32 states and 42 transitions. [2022-11-20 09:27:28,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:28,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:27:28,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:27:28,353 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 09:27:28,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:28,375 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2022-11-20 09:27:28,375 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 36 transitions. [2022-11-20 09:27:28,378 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2022-11-20 09:27:28,379 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 30 states and 36 transitions. [2022-11-20 09:27:28,380 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2022-11-20 09:27:28,380 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2022-11-20 09:27:28,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 36 transitions. [2022-11-20 09:27:28,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 09:27:28,381 INFO L218 hiAutomatonCegarLoop]: Abstraction has 30 states and 36 transitions. [2022-11-20 09:27:28,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 36 transitions. [2022-11-20 09:27:28,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-11-20 09:27:28,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 23 states have internal predecessors, (25), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 09:27:28,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2022-11-20 09:27:28,391 INFO L240 hiAutomatonCegarLoop]: Abstraction has 30 states and 36 transitions. [2022-11-20 09:27:28,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:27:28,394 INFO L428 stractBuchiCegarLoop]: Abstraction has 30 states and 36 transitions. [2022-11-20 09:27:28,394 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-20 09:27:28,394 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 30 states and 36 transitions. [2022-11-20 09:27:28,396 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2022-11-20 09:27:28,397 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 09:27:28,397 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 09:27:28,398 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:28,398 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-11-20 09:27:28,399 INFO L748 eck$LassoCheckResult]: Stem: 366#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 367#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~i~0#1, main_~res~1#1;main_~i~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 376#L18 assume !(main_~i~0#1 <= 0); 373#L20 call main_#t~ret3#1 := rec(main_~i~0#1);< 380#recENTRY ~a := #in~a; 372#L5 assume !(0 == ~a); 369#L8 call #t~ret0 := rec(~a - 1);< 379#recENTRY ~a := #in~a; 368#L5 assume 0 == ~a;#res := 0; 371#recFINAL assume true; 387#recEXIT >#46#return; 394#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 374#L10-2 assume !(~rescopy~0 > 0); 375#L10-3 #res := 1 + ~res~0; 395#recFINAL assume true; 388#recEXIT >#48#return; 382#L20-1 main_~res~1#1 := main_#t~ret3#1;havoc main_#t~ret3#1; 383#L21-2 [2022-11-20 09:27:28,399 INFO L750 eck$LassoCheckResult]: Loop: 383#L21-2 assume !!(main_~res~1#1 < 1); 383#L21-2 [2022-11-20 09:27:28,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:28,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1542563482, now seen corresponding path program 1 times [2022-11-20 09:27:28,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:28,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202576523] [2022-11-20 09:27:28,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:28,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:28,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:27:28,433 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 09:27:28,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:27:28,448 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 09:27:28,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:28,451 INFO L85 PathProgramCache]: Analyzing trace with hash 70, now seen corresponding path program 2 times [2022-11-20 09:27:28,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:28,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533558311] [2022-11-20 09:27:28,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:28,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:28,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:27:28,459 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 09:27:28,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:27:28,463 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 09:27:28,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:28,465 INFO L85 PathProgramCache]: Analyzing trace with hash -574827647, now seen corresponding path program 1 times [2022-11-20 09:27:28,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:28,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064313181] [2022-11-20 09:27:28,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:28,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:28,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:28,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 09:27:28,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:28,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:27:28,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:28,599 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 09:27:28,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:28,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064313181] [2022-11-20 09:27:28,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064313181] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:27:28,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784825992] [2022-11-20 09:27:28,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:28,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:27:28,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:28,602 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:27:28,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-11-20 09:27:28,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:28,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 09:27:28,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:27:28,699 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 09:27:28,700 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:27:28,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784825992] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:28,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:27:28,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10 [2022-11-20 09:27:28,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976069074] [2022-11-20 09:27:28,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:28,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:28,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 09:27:28,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-20 09:27:28,707 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. cyclomatic complexity: 9 Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 09:27:28,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:28,743 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2022-11-20 09:27:28,743 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 35 transitions. [2022-11-20 09:27:28,744 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-11-20 09:27:28,745 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 23 states and 27 transitions. [2022-11-20 09:27:28,745 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2022-11-20 09:27:28,745 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2022-11-20 09:27:28,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 27 transitions. [2022-11-20 09:27:28,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 09:27:28,746 INFO L218 hiAutomatonCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-11-20 09:27:28,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 27 transitions. [2022-11-20 09:27:28,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2022-11-20 09:27:28,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 09:27:28,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-11-20 09:27:28,749 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-11-20 09:27:28,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 09:27:28,750 INFO L428 stractBuchiCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-11-20 09:27:28,750 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-20 09:27:28,750 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 23 transitions. [2022-11-20 09:27:28,751 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-11-20 09:27:28,751 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 09:27:28,751 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 09:27:28,752 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:28,752 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-11-20 09:27:28,752 INFO L748 eck$LassoCheckResult]: Stem: 517#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 518#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~i~0#1, main_~res~1#1;main_~i~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 511#L18 assume !(main_~i~0#1 <= 0); 512#L20 call main_#t~ret3#1 := rec(main_~i~0#1);< 520#recENTRY ~a := #in~a; 521#L5 assume !(0 == ~a); 514#L8 call #t~ret0 := rec(~a - 1);< 519#recENTRY ~a := #in~a; 523#L5 assume !(0 == ~a); 515#L8 call #t~ret0 := rec(~a - 1);< 519#recENTRY ~a := #in~a; 522#L5 assume 0 == ~a;#res := 0; 524#recFINAL assume true; 530#recEXIT >#46#return; 529#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 525#L10-2 assume !(~rescopy~0 > 0); 526#L10-3 #res := 1 + ~res~0; 528#recFINAL assume true; 527#recEXIT >#46#return; 513#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 516#L10-2 [2022-11-20 09:27:28,752 INFO L750 eck$LassoCheckResult]: Loop: 516#L10-2 assume !!(~rescopy~0 > 0);#t~post1 := ~rescopy~0;~rescopy~0 := #t~post1 - 1;havoc #t~post1; 516#L10-2 [2022-11-20 09:27:28,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:28,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1552442957, now seen corresponding path program 1 times [2022-11-20 09:27:28,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:28,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348756495] [2022-11-20 09:27:28,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:28,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:28,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:27:28,762 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 09:27:28,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:27:28,769 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 09:27:28,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:28,770 INFO L85 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 2 times [2022-11-20 09:27:28,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:28,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273855718] [2022-11-20 09:27:28,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:28,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:28,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:27:28,774 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 09:27:28,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:27:28,776 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 09:27:28,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:28,776 INFO L85 PathProgramCache]: Analyzing trace with hash -881091396, now seen corresponding path program 1 times [2022-11-20 09:27:28,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:28,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123641286] [2022-11-20 09:27:28,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:28,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:28,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:27:28,784 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 09:27:28,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:27:28,793 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 09:27:28,805 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 09:27:28,805 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 09:27:28,806 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 09:27:28,806 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 09:27:28,806 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 09:27:28,806 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:27:28,806 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 09:27:28,806 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 09:27:28,806 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter3.c_Iteration5_Loop [2022-11-20 09:27:28,806 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 09:27:28,807 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 09:27:28,807 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 09:27:28,813 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 09:27:28,832 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 09:27:28,832 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 09:27:28,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:27:28,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:28,833 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:28,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2022-11-20 09:27:28,847 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 09:27:28,847 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 09:27:28,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:28,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:27:28,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:28,889 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:28,896 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 09:27:28,896 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 09:27:28,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2022-11-20 09:27:28,930 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 09:27:28,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:28,935 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 09:27:28,935 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 09:27:28,935 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 09:27:28,935 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 09:27:28,935 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 09:27:28,935 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:27:28,935 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 09:27:28,935 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 09:27:28,935 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter3.c_Iteration5_Loop [2022-11-20 09:27:28,935 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 09:27:28,936 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 09:27:28,936 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 09:27:28,943 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 09:27:28,967 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 09:27:28,967 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 09:27:28,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:27:28,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:28,971 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:28,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2022-11-20 09:27:28,976 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 09:27:28,990 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 09:27:28,990 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 09:27:28,990 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 09:27:28,990 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 09:27:28,990 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 09:27:28,991 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 09:27:28,991 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 09:27:29,007 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 09:27:29,014 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-20 09:27:29,014 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-20 09:27:29,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:27:29,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:29,016 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:29,020 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 09:27:29,020 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 09:27:29,021 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 09:27:29,021 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_~rescopy~0) = 1*rec_~rescopy~0 Supporting invariants [] [2022-11-20 09:27:29,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2022-11-20 09:27:29,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:29,030 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 09:27:29,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:29,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:29,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 09:27:29,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:27:29,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:29,292 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:27:29,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:27:29,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:29,294 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2022-11-20 09:27:29,295 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 23 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 09:27:29,335 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 23 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Result 26 states and 30 transitions. Complement of second has 7 states. [2022-11-20 09:27:29,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2022-11-20 09:27:29,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 09:27:29,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2022-11-20 09:27:29,339 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 20 letters. Loop has 1 letters. [2022-11-20 09:27:29,339 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 09:27:29,340 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-20 09:27:29,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:29,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:29,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 09:27:29,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:27:29,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:29,543 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:27:29,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:27:29,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:29,544 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 1 loop predicates [2022-11-20 09:27:29,544 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 23 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 09:27:29,578 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 23 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Result 26 states and 30 transitions. Complement of second has 7 states. [2022-11-20 09:27:29,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2022-11-20 09:27:29,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 09:27:29,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2022-11-20 09:27:29,580 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 20 letters. Loop has 1 letters. [2022-11-20 09:27:29,580 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 09:27:29,580 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-20 09:27:29,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:29,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:29,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 09:27:29,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:27:29,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:29,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:29,797 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:27:29,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:27:29,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:29,798 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2022-11-20 09:27:29,798 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 23 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 09:27:29,839 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 23 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Result 33 states and 41 transitions. Complement of second has 9 states. [2022-11-20 09:27:29,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2022-11-20 09:27:29,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 09:27:29,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2022-11-20 09:27:29,841 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 20 letters. Loop has 1 letters. [2022-11-20 09:27:29,841 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 09:27:29,841 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 21 letters. Loop has 1 letters. [2022-11-20 09:27:29,842 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 09:27:29,842 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 20 letters. Loop has 2 letters. [2022-11-20 09:27:29,842 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 09:27:29,842 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 41 transitions. [2022-11-20 09:27:29,843 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-20 09:27:29,843 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 0 states and 0 transitions. [2022-11-20 09:27:29,844 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-20 09:27:29,844 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-20 09:27:29,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-20 09:27:29,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:29,844 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 09:27:29,844 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 09:27:29,844 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 09:27:29,845 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-11-20 09:27:29,845 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-11-20 09:27:29,845 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-20 09:27:29,845 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-11-20 09:27:29,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 09:27:29 BoogieIcfgContainer [2022-11-20 09:27:29,853 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-20 09:27:29,854 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 09:27:29,854 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 09:27:29,854 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 09:27:29,854 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:24" (3/4) ... [2022-11-20 09:27:29,863 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 09:27:29,864 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 09:27:29,866 INFO L158 Benchmark]: Toolchain (without parser) took 5915.85ms. Allocated memory was 127.9MB in the beginning and 186.6MB in the end (delta: 58.7MB). Free memory was 56.7MB in the beginning and 134.6MB in the end (delta: -77.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 09:27:29,866 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 127.9MB. Free memory is still 97.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 09:27:29,867 INFO L158 Benchmark]: CACSL2BoogieTranslator took 269.08ms. Allocated memory was 127.9MB in the beginning and 155.2MB in the end (delta: 27.3MB). Free memory was 56.5MB in the beginning and 126.5MB in the end (delta: -69.9MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB. [2022-11-20 09:27:29,867 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.23ms. Allocated memory is still 155.2MB. Free memory was 126.5MB in the beginning and 125.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 09:27:29,867 INFO L158 Benchmark]: Boogie Preprocessor took 21.94ms. Allocated memory is still 155.2MB. Free memory was 125.3MB in the beginning and 123.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 09:27:29,867 INFO L158 Benchmark]: RCFGBuilder took 253.71ms. Allocated memory is still 155.2MB. Free memory was 123.8MB in the beginning and 114.2MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-20 09:27:29,868 INFO L158 Benchmark]: BuchiAutomizer took 5311.54ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 113.9MB in the beginning and 134.6MB in the end (delta: -20.7MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. [2022-11-20 09:27:29,868 INFO L158 Benchmark]: Witness Printer took 10.02ms. Allocated memory is still 186.6MB. Free memory is still 134.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 09:27:29,870 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 127.9MB. Free memory is still 97.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 269.08ms. Allocated memory was 127.9MB in the beginning and 155.2MB in the end (delta: 27.3MB). Free memory was 56.5MB in the beginning and 126.5MB in the end (delta: -69.9MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.23ms. Allocated memory is still 155.2MB. Free memory was 126.5MB in the beginning and 125.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 21.94ms. Allocated memory is still 155.2MB. Free memory was 125.3MB in the beginning and 123.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 253.71ms. Allocated memory is still 155.2MB. Free memory was 123.8MB in the beginning and 114.2MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 5311.54ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 113.9MB in the beginning and 134.6MB in the end (delta: -20.7MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. * Witness Printer took 10.02ms. Allocated memory is still 186.6MB. Free memory is still 134.6MB. 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 6 terminating modules (3 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function \old(a) and consists of 5 locations. One deterministic module has affine ranking function rescopy and consists of 4 locations. One nondeterministic module has affine ranking function rescopy and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.2s and 6 iterations. TraceHistogramMax:3. Analysis of lassos took 3.4s. Construction of modules took 0.1s. Büchi inclusion checks took 1.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 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, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 104 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 97 mSDsluCounter, 260 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 150 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 89 IncrementalHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 110 mSDtfsCounter, 89 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc1 concLT1 SILN1 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital11 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq167 hnf94 smp100 dnf123 smp100 tf108 neg96 sie113 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 216ms VariablesStem: 1 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 17 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.9s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-11-20 09:27:29,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:30,089 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f701182-2424-4bd5-9eb3-9dc9263e0321/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE