./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 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-numeric/rec_counter3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R --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-38b53e6 [2022-11-25 17:52:18,242 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:52:18,244 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:52:18,276 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:52:18,277 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:52:18,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:52:18,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:52:18,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:52:18,294 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:52:18,302 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:52:18,304 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:52:18,307 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:52:18,308 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:52:18,312 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:52:18,315 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:52:18,318 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:52:18,320 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:52:18,321 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:52:18,323 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:52:18,331 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:52:18,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:52:18,335 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:52:18,337 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:52:18,338 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:52:18,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:52:18,350 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:52:18,350 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:52:18,353 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:52:18,355 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:52:18,356 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:52:18,357 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:52:18,358 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:52:18,360 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:52:18,362 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:52:18,363 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:52:18,363 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:52:18,364 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:52:18,364 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:52:18,365 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:52:18,366 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:52:18,366 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:52:18,367 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-11-25 17:52:18,410 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:52:18,412 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:52:18,413 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:52:18,414 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:52:18,415 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:52:18,416 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:52:18,416 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:52:18,417 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-25 17:52:18,417 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-25 17:52:18,417 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-25 17:52:18,419 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-25 17:52:18,419 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-25 17:52:18,419 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-25 17:52:18,420 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:52:18,420 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:52:18,420 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:52:18,421 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:52:18,421 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-25 17:52:18,421 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-25 17:52:18,422 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-25 17:52:18,422 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:52:18,422 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-25 17:52:18,423 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:52:18,423 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-25 17:52:18,423 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:52:18,424 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:52:18,425 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:52:18,425 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:52:18,427 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-25 17:52:18,427 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_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7b4f33979632a981e739ff06b52fe01aa9fb175d5e5193b145052887f22f8a3 [2022-11-25 17:52:18,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:52:18,857 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:52:18,860 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:52:18,862 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:52:18,863 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:52:18,864 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/termination-numeric/rec_counter3.c [2022-11-25 17:52:21,958 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:52:22,170 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:52:22,171 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/sv-benchmarks/c/termination-numeric/rec_counter3.c [2022-11-25 17:52:22,177 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/data/d06332f44/5ec155e21f7e4cbba37cfaf3dd1ccb8d/FLAGe7f263ab5 [2022-11-25 17:52:22,199 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/data/d06332f44/5ec155e21f7e4cbba37cfaf3dd1ccb8d [2022-11-25 17:52:22,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:52:22,203 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:52:22,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:52:22,204 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:52:22,212 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:52:22,213 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:52:22" (1/1) ... [2022-11-25 17:52:22,214 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34591202 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:22, skipping insertion in model container [2022-11-25 17:52:22,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:52:22" (1/1) ... [2022-11-25 17:52:22,224 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:52:22,239 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:52:22,501 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:52:22,506 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:52:22,527 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:52:22,542 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:52:22,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:22 WrapperNode [2022-11-25 17:52:22,544 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:52:22,545 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:52:22,545 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:52:22,546 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:52:22,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:22" (1/1) ... [2022-11-25 17:52:22,561 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:22" (1/1) ... [2022-11-25 17:52:22,578 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 14 [2022-11-25 17:52:22,580 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:52:22,582 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:52:22,583 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:52:22,583 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:52:22,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:22" (1/1) ... [2022-11-25 17:52:22,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:22" (1/1) ... [2022-11-25 17:52:22,594 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:22" (1/1) ... [2022-11-25 17:52:22,595 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:22" (1/1) ... [2022-11-25 17:52:22,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:22" (1/1) ... [2022-11-25 17:52:22,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:22" (1/1) ... [2022-11-25 17:52:22,604 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:22" (1/1) ... [2022-11-25 17:52:22,605 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:22" (1/1) ... [2022-11-25 17:52:22,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:52:22,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:52:22,609 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:52:22,609 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:52:22,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:22" (1/1) ... [2022-11-25 17:52:22,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:52:22,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:22,647 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:52:22,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-25 17:52:22,694 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2022-11-25 17:52:22,694 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2022-11-25 17:52:22,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:52:22,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:52:22,772 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:52:22,774 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:52:22,931 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:52:22,940 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:52:22,940 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-25 17:52:22,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:52:22 BoogieIcfgContainer [2022-11-25 17:52:22,943 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:52:22,944 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-25 17:52:22,944 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-25 17:52:22,948 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-25 17:52:22,949 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-25 17:52:22,949 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 25.11 05:52:22" (1/3) ... [2022-11-25 17:52:22,951 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@64f508a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 05:52:22, skipping insertion in model container [2022-11-25 17:52:22,951 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-25 17:52:22,951 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:22" (2/3) ... [2022-11-25 17:52:22,951 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@64f508a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 05:52:22, skipping insertion in model container [2022-11-25 17:52:22,952 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-25 17:52:22,952 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:52:22" (3/3) ... [2022-11-25 17:52:22,953 INFO L332 chiAutomizerObserver]: Analyzing ICFG rec_counter3.c [2022-11-25 17:52:23,016 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-25 17:52:23,016 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-25 17:52:23,017 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-25 17:52:23,017 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-25 17:52:23,017 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-25 17:52:23,017 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-25 17:52:23,018 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-25 17:52:23,018 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-25 17:52:23,023 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) [2022-11-25 17:52:23,044 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 5 [2022-11-25 17:52:23,045 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 17:52:23,045 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 17:52:23,052 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-11-25 17:52:23,052 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-25 17:52:23,052 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-25 17:52:23,053 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) [2022-11-25 17:52:23,056 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 5 [2022-11-25 17:52:23,056 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 17:52:23,057 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 17:52:23,057 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-11-25 17:52:23,058 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-25 17:52:23,068 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 [2022-11-25 17:52:23,068 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 [2022-11-25 17:52:23,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:52:23,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1572150, now seen corresponding path program 1 times [2022-11-25 17:52:23,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:52:23,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599352456] [2022-11-25 17:52:23,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:23,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:52:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:52:23,190 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:52:23,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:52:23,216 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:52:23,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:52:23,220 INFO L85 PathProgramCache]: Analyzing trace with hash 29960, now seen corresponding path program 1 times [2022-11-25 17:52:23,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:52:23,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827286183] [2022-11-25 17:52:23,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:23,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:52:23,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:52:23,240 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:52:23,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:52:23,254 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:52:23,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:52:23,268 INFO L85 PathProgramCache]: Analyzing trace with hash -408719437, now seen corresponding path program 1 times [2022-11-25 17:52:23,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:52:23,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477284205] [2022-11-25 17:52:23,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:23,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:52:23,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:52:23,280 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:52:23,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:52:23,289 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:52:23,457 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 17:52:23,460 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 17:52:23,462 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 17:52:23,463 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 17:52:23,463 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-25 17:52:23,464 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:52:23,464 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 17:52:23,465 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 17:52:23,465 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter3.c_Iteration1_Loop [2022-11-25 17:52:23,465 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 17:52:23,465 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 17:52:23,484 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:52:23,503 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:52:23,508 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:52:23,525 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:52:23,535 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:52:23,539 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:52:23,554 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:52:23,655 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 17:52:23,656 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-25 17:52:23,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:52:23,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:23,663 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:52:23,668 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 17:52:23,668 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 17:52:23,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-25 17:52:23,698 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 17:52:23,698 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~ret0=0} Honda state: {rec_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 17:52:23,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:23,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:52:23,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:23,739 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:52:23,753 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 17:52:23,753 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 17:52:23,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-25 17:52:23,776 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 17:52:23,777 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~res~0=0} Honda state: {rec_~res~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 17:52:23,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:23,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:52:23,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:23,789 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:52:23,799 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 17:52:23,799 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 17:52:23,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-25 17:52:23,822 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 17:52:23,822 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~post1=0} Honda state: {rec_#t~post1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 17:52:23,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:23,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:52:23,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:23,835 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:52:23,843 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 17:52:23,843 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 17:52:23,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-25 17:52:23,870 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 17:52:23,870 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~a=0} Honda state: {rec_~a=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 17:52:23,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:23,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:52:23,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:23,889 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:52:23,899 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 17:52:23,899 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 17:52:23,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-25 17:52:23,939 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 17:52:23,939 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#res=0} Honda state: {rec_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 17:52:23,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:23,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:52:23,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:23,951 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:52:23,960 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 17:52:23,960 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 17:52:23,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-25 17:52:23,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:23,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:52:23,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:23,995 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:52:24,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-25 17:52:24,004 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-25 17:52:24,004 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 17:52:24,052 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 17:52:24,052 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] [2022-11-25 17:52:24,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:24,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:52:24,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:24,059 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:52:24,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-25 17:52:24,062 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 17:52:24,063 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 17:52:24,076 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 17:52:24,076 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~rescopy~0=0} Honda state: {rec_~rescopy~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 17:52:24,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:24,113 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 17:52:24,114 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 17:52:24,114 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 17:52:24,114 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 17:52:24,114 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-25 17:52:24,114 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:52:24,114 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 17:52:24,115 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 17:52:24,115 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter3.c_Iteration1_Lasso [2022-11-25 17:52:24,115 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 17:52:24,115 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 17:52:24,117 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:52:24,123 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:52:24,126 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:52:24,130 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:52:24,133 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:52:24,138 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:52:24,143 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:52:24,151 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:52:24,155 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:52:24,160 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:52:24,166 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:52:24,171 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:52:24,247 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 17:52:24,247 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-25 17:52:24,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:52:24,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:24,249 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:52:24,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-25 17:52:24,276 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 17:52:24,276 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 17:52:24,304 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 17:52:24,305 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~ret0=0} Honda state: {rec_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 17:52:24,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:24,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:52:24,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:24,315 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:52:24,332 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 17:52:24,332 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 17:52:24,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-25 17:52:24,354 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 17:52:24,355 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~post1=0} Honda state: {rec_#t~post1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 17:52:24,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:24,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:52:24,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:24,367 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:52:24,371 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 17:52:24,371 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 17:52:24,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-11-25 17:52:24,395 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 17:52:24,395 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: [] [2022-11-25 17:52:24,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:24,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:52:24,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:24,406 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:52:24,415 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 17:52:24,415 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 17:52:24,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-25 17:52:24,443 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 17:52:24,443 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#res=0} Honda state: {rec_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 17:52:24,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:24,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:52:24,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:24,454 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:52:24,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-25 17:52:24,462 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 17:52:24,462 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 17:52:24,484 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 17:52:24,484 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: [] [2022-11-25 17:52:24,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:24,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:52:24,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:24,497 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:52:24,504 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 17:52:24,504 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 17:52:24,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-25 17:52:24,519 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 17:52:24,520 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~rescopy~0=0} Honda state: {rec_~rescopy~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 17:52:24,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:24,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:52:24,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:24,525 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:52:24,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-11-25 17:52:24,530 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 17:52:24,530 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 17:52:24,547 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 17:52:24,547 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: [] [2022-11-25 17:52:24,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:24,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:52:24,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:24,552 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:52:24,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-11-25 17:52:24,557 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 17:52:24,557 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 17:52:24,571 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 17:52:24,572 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~a=0} Honda state: {rec_~a=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 17:52:24,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:24,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:52:24,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:24,581 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:52:24,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-11-25 17:52:24,585 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 17:52:24,585 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 17:52:24,599 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 17:52:24,599 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~res~0=0} Honda state: {rec_~res~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 17:52:24,603 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2022-11-25 17:52:24,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:52:24,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:24,605 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:52:24,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-11-25 17:52:24,608 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 17:52:24,608 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 17:52:24,623 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 17:52:24,623 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: [] [2022-11-25 17:52:24,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:24,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:52:24,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:24,631 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:52:24,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-11-25 17:52:24,635 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 17:52:24,635 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 17:52:24,648 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 17:52:24,648 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: [] [2022-11-25 17:52:24,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:24,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:52:24,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:24,653 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:52:24,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-11-25 17:52:24,660 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 17:52:24,662 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 17:52:24,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:24,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:52:24,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:24,681 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:52:24,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-11-25 17:52:24,683 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-25 17:52:24,684 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 17:52:24,742 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-25 17:52:24,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:24,752 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 17:52:24,752 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 17:52:24,752 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 17:52:24,753 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 17:52:24,753 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-25 17:52:24,753 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:52:24,753 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 17:52:24,753 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 17:52:24,753 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter3.c_Iteration1_Lasso [2022-11-25 17:52:24,754 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 17:52:24,754 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 17:52:24,756 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:52:24,759 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:52:24,762 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:52:24,765 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:52:24,767 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:52:24,770 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:52:24,773 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:52:24,776 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:52:24,779 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:52:24,782 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:52:24,791 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:52:24,794 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:52:24,862 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 17:52:24,867 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-25 17:52:24,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:52:24,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:24,870 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:52:24,879 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 [2022-11-25 17:52:24,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-11-25 17:52:24,894 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 17:52:24,894 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 17:52:24,895 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 17:52:24,895 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 17:52:24,895 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 17:52:24,897 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 17:52:24,897 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 17:52:24,907 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 17:52:24,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:24,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:52:24,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:24,919 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:52:24,923 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-25 17:52:24,938 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 17:52:24,938 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 17:52:24,939 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 17:52:24,939 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 17:52:24,939 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 17:52:24,940 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 17:52:24,941 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 17:52:24,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-11-25 17:52:24,963 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 17:52:24,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:24,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:52:24,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:24,974 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:52:24,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-11-25 17:52:24,978 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 [2022-11-25 17:52:24,988 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 17:52:24,988 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 17:52:24,988 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 17:52:24,989 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 17:52:24,989 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 17:52:24,990 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 17:52:24,990 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 17:52:25,027 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 17:52:25,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:25,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:52:25,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:25,033 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:52:25,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-11-25 17:52:25,046 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 [2022-11-25 17:52:25,057 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 17:52:25,057 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 17:52:25,057 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 17:52:25,058 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 17:52:25,058 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 17:52:25,059 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 17:52:25,059 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 17:52:25,067 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 17:52:25,070 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2022-11-25 17:52:25,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:52:25,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:25,072 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:52:25,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-11-25 17:52:25,076 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 [2022-11-25 17:52:25,089 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 17:52:25,089 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 17:52:25,089 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 17:52:25,089 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 17:52:25,090 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 17:52:25,091 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 17:52:25,091 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 17:52:25,107 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 17:52:25,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:25,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:52:25,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:25,117 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:52:25,127 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 [2022-11-25 17:52:25,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-11-25 17:52:25,140 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 17:52:25,141 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 17:52:25,141 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 17:52:25,141 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 17:52:25,141 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 17:52:25,142 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 17:52:25,142 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 17:52:25,159 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 17:52:25,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:25,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:52:25,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:25,169 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:52:25,175 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 [2022-11-25 17:52:25,188 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 17:52:25,188 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 17:52:25,189 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 17:52:25,189 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 17:52:25,189 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 17:52:25,190 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 17:52:25,190 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 17:52:25,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-11-25 17:52:25,203 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 17:52:25,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:25,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:52:25,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:25,207 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:52:25,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-11-25 17:52:25,231 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 [2022-11-25 17:52:25,241 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 17:52:25,241 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 17:52:25,241 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 17:52:25,241 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 17:52:25,241 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 17:52:25,242 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 17:52:25,242 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 17:52:25,251 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 17:52:25,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2022-11-25 17:52:25,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:52:25,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:25,256 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:52:25,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-11-25 17:52:25,260 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 [2022-11-25 17:52:25,271 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 17:52:25,271 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 17:52:25,271 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 17:52:25,271 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 17:52:25,271 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 17:52:25,279 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 17:52:25,280 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 17:52:25,293 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 17:52:25,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2022-11-25 17:52:25,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:52:25,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:25,297 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:52:25,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-11-25 17:52:25,299 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 [2022-11-25 17:52:25,310 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 17:52:25,310 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 17:52:25,310 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2022-11-25 17:52:25,310 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 17:52:25,335 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2022-11-25 17:52:25,336 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2022-11-25 17:52:25,361 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-25 17:52:25,389 INFO L443 ModelExtractionUtils]: Simplification made 12 calls to the SMT solver. [2022-11-25 17:52:25,389 INFO L444 ModelExtractionUtils]: 1 out of 11 variables were initially zero. Simplification set additionally 7 variables to zero. [2022-11-25 17:52:25,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:52:25,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:25,422 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:52:25,423 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-25 17:52:25,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-11-25 17:52:25,461 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2022-11-25 17:52:25,462 INFO L513 LassoAnalysis]: Proved termination. [2022-11-25 17:52:25,462 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_#in~a) = 1*rec_#in~a Supporting invariants [1*rec_#in~a >= 0] [2022-11-25 17:52:25,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:25,481 INFO L156 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2022-11-25 17:52:25,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:52:25,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:52:25,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 17:52:25,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:52:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:52:25,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 17:52:25,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:52:25,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:52:25,737 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 [2022-11-25 17:52:25,739 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) [2022-11-25 17:52:25,907 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. [2022-11-25 17:52:25,909 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 [2022-11-25 17:52:25,914 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) [2022-11-25 17:52:25,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2022-11-25 17:52:25,917 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 4 letters. Loop has 3 letters. [2022-11-25 17:52:25,920 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 17:52:25,920 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 7 letters. Loop has 3 letters. [2022-11-25 17:52:25,920 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 17:52:25,920 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 4 letters. Loop has 6 letters. [2022-11-25 17:52:25,920 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 17:52:25,921 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 43 transitions. [2022-11-25 17:52:25,928 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2022-11-25 17:52:25,937 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 23 states and 30 transitions. [2022-11-25 17:52:25,938 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2022-11-25 17:52:25,938 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2022-11-25 17:52:25,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 30 transitions. [2022-11-25 17:52:25,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 17:52:25,939 INFO L218 hiAutomatonCegarLoop]: Abstraction has 23 states and 30 transitions. [2022-11-25 17:52:25,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 30 transitions. [2022-11-25 17:52:25,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2022-11-25 17:52:25,968 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) [2022-11-25 17:52:25,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2022-11-25 17:52:25,970 INFO L240 hiAutomatonCegarLoop]: Abstraction has 21 states and 26 transitions. [2022-11-25 17:52:25,970 INFO L428 stractBuchiCegarLoop]: Abstraction has 21 states and 26 transitions. [2022-11-25 17:52:25,970 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-25 17:52:25,970 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 26 transitions. [2022-11-25 17:52:25,971 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2022-11-25 17:52:25,971 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 17:52:25,971 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 17:52:25,972 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:52:25,972 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-11-25 17:52:25,972 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 [2022-11-25 17:52:25,973 INFO L750 eck$LassoCheckResult]: Loop: 134#L21-2 assume !!(main_~res~1#1 < 1); 134#L21-2 [2022-11-25 17:52:25,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:52:25,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1937407319, now seen corresponding path program 1 times [2022-11-25 17:52:25,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:52:25,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20014994] [2022-11-25 17:52:25,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:25,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:52:25,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:52:26,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:52:26,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:52:26,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:52:26,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:52:26,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20014994] [2022-11-25 17:52:26,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20014994] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:52:26,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:52:26,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:52:26,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716397783] [2022-11-25 17:52:26,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:52:26,127 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-25 17:52:26,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:52:26,128 INFO L85 PathProgramCache]: Analyzing trace with hash 70, now seen corresponding path program 1 times [2022-11-25 17:52:26,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:52:26,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980952784] [2022-11-25 17:52:26,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:26,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:52:26,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:52:26,131 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:52:26,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:52:26,133 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:52:26,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:52:26,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:52:26,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:52:26,143 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) [2022-11-25 17:52:26,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:52:26,187 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2022-11-25 17:52:26,188 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 24 transitions. [2022-11-25 17:52:26,190 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2022-11-25 17:52:26,192 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 18 states and 21 transitions. [2022-11-25 17:52:26,192 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2022-11-25 17:52:26,192 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2022-11-25 17:52:26,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 21 transitions. [2022-11-25 17:52:26,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 17:52:26,192 INFO L218 hiAutomatonCegarLoop]: Abstraction has 18 states and 21 transitions. [2022-11-25 17:52:26,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 21 transitions. [2022-11-25 17:52:26,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-25 17:52:26,196 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) [2022-11-25 17:52:26,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2022-11-25 17:52:26,199 INFO L240 hiAutomatonCegarLoop]: Abstraction has 18 states and 21 transitions. [2022-11-25 17:52:26,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:52:26,200 INFO L428 stractBuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2022-11-25 17:52:26,200 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-25 17:52:26,200 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 21 transitions. [2022-11-25 17:52:26,203 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2022-11-25 17:52:26,203 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 17:52:26,203 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 17:52:26,205 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:52:26,205 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-11-25 17:52:26,206 INFO L748 eck$LassoCheckResult]: Stem: 175#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 176#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~i~0#1, main_~res~1#1;main_~i~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 184#L18 assume !(main_~i~0#1 <= 0); 181#L20 call main_#t~ret3#1 := rec(main_~i~0#1);< 187#recENTRY ~a := #in~a; 180#L5 assume !(0 == ~a); 178#L8 call #t~ret0 := rec(~a - 1);< 186#recENTRY ~a := #in~a; 177#L5 assume 0 == ~a;#res := 0; 179#recFINAL assume true; 190#recEXIT >#46#return; 185#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 182#L10-2 [2022-11-25 17:52:26,206 INFO L750 eck$LassoCheckResult]: Loop: 182#L10-2 assume !!(~rescopy~0 > 0);#t~post1 := ~rescopy~0;~rescopy~0 := #t~post1 - 1;havoc #t~post1; 182#L10-2 [2022-11-25 17:52:26,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:52:26,207 INFO L85 PathProgramCache]: Analyzing trace with hash 27203062, now seen corresponding path program 1 times [2022-11-25 17:52:26,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:52:26,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757613919] [2022-11-25 17:52:26,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:26,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:52:26,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:52:26,229 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:52:26,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:52:26,235 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:52:26,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:52:26,236 INFO L85 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 1 times [2022-11-25 17:52:26,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:52:26,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484658601] [2022-11-25 17:52:26,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:26,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:52:26,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:52:26,245 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:52:26,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:52:26,254 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:52:26,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:52:26,255 INFO L85 PathProgramCache]: Analyzing trace with hash 843294937, now seen corresponding path program 1 times [2022-11-25 17:52:26,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:52:26,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607786257] [2022-11-25 17:52:26,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:26,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:52:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:52:26,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:52:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:52:26,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:52:26,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:52:26,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607786257] [2022-11-25 17:52:26,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607786257] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:52:26,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:52:26,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:52:26,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784221692] [2022-11-25 17:52:26,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:52:26,404 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 17:52:26,404 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 17:52:26,404 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 17:52:26,404 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 17:52:26,404 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-25 17:52:26,404 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:52:26,404 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 17:52:26,405 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 17:52:26,405 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter3.c_Iteration3_Loop [2022-11-25 17:52:26,405 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 17:52:26,405 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 17:52:26,406 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:52:26,413 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:52:26,442 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 17:52:26,442 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-25 17:52:26,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:52:26,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:26,443 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:52:26,448 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 17:52:26,448 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 17:52:26,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-11-25 17:52:26,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:26,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:52:26,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:26,483 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:52:26,491 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-25 17:52:26,491 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 17:52:26,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-11-25 17:52:26,527 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-25 17:52:26,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:26,537 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 17:52:26,537 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 17:52:26,537 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 17:52:26,537 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 17:52:26,537 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-25 17:52:26,537 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:52:26,537 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 17:52:26,537 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 17:52:26,537 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter3.c_Iteration3_Loop [2022-11-25 17:52:26,537 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 17:52:26,537 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 17:52:26,538 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:52:26,541 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:52:26,567 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 17:52:26,567 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-25 17:52:26,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:52:26,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:26,569 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:52:26,579 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 [2022-11-25 17:52:26,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-11-25 17:52:26,593 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 17:52:26,593 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 17:52:26,593 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 17:52:26,593 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 17:52:26,593 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 17:52:26,594 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 17:52:26,594 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 17:52:26,611 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 17:52:26,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:26,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:52:26,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:26,622 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:52:26,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2022-11-25 17:52:26,630 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 [2022-11-25 17:52:26,643 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 17:52:26,643 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 17:52:26,643 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 17:52:26,644 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 17:52:26,644 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 17:52:26,645 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 17:52:26,645 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 17:52:26,655 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-25 17:52:26,659 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-25 17:52:26,659 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-25 17:52:26,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:52:26,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:26,663 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:52:26,664 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-25 17:52:26,664 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-25 17:52:26,664 INFO L513 LassoAnalysis]: Proved termination. [2022-11-25 17:52:26,664 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_~rescopy~0) = 1*rec_~rescopy~0 Supporting invariants [] [2022-11-25 17:52:26,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-11-25 17:52:26,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:26,674 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-25 17:52:26,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:52:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:52:26,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 17:52:26,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:52:26,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:52:26,836 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:52:26,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:52:26,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:52:26,838 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 [2022-11-25 17:52:26,838 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) [2022-11-25 17:52:26,883 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. [2022-11-25 17:52:26,883 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 [2022-11-25 17:52:26,884 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) [2022-11-25 17:52:26,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2022-11-25 17:52:26,885 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 12 letters. Loop has 1 letters. [2022-11-25 17:52:26,886 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 17:52:26,886 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 13 letters. Loop has 1 letters. [2022-11-25 17:52:26,886 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 17:52:26,886 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 12 letters. Loop has 2 letters. [2022-11-25 17:52:26,887 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 17:52:26,887 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 50 transitions. [2022-11-25 17:52:26,888 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2022-11-25 17:52:26,889 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 32 states and 42 transitions. [2022-11-25 17:52:26,890 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2022-11-25 17:52:26,890 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2022-11-25 17:52:26,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 42 transitions. [2022-11-25 17:52:26,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 17:52:26,890 INFO L218 hiAutomatonCegarLoop]: Abstraction has 32 states and 42 transitions. [2022-11-25 17:52:26,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 42 transitions. [2022-11-25 17:52:26,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-11-25 17:52:26,894 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) [2022-11-25 17:52:26,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2022-11-25 17:52:26,895 INFO L240 hiAutomatonCegarLoop]: Abstraction has 32 states and 42 transitions. [2022-11-25 17:52:26,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:52:26,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:52:26,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:52:26,896 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) [2022-11-25 17:52:26,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:52:26,914 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2022-11-25 17:52:26,914 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 36 transitions. [2022-11-25 17:52:26,915 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2022-11-25 17:52:26,916 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 30 states and 36 transitions. [2022-11-25 17:52:26,916 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2022-11-25 17:52:26,917 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2022-11-25 17:52:26,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 36 transitions. [2022-11-25 17:52:26,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 17:52:26,917 INFO L218 hiAutomatonCegarLoop]: Abstraction has 30 states and 36 transitions. [2022-11-25 17:52:26,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 36 transitions. [2022-11-25 17:52:26,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-11-25 17:52:26,921 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) [2022-11-25 17:52:26,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2022-11-25 17:52:26,922 INFO L240 hiAutomatonCegarLoop]: Abstraction has 30 states and 36 transitions. [2022-11-25 17:52:26,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:52:26,923 INFO L428 stractBuchiCegarLoop]: Abstraction has 30 states and 36 transitions. [2022-11-25 17:52:26,923 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-25 17:52:26,923 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 30 states and 36 transitions. [2022-11-25 17:52:26,924 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2022-11-25 17:52:26,924 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 17:52:26,924 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 17:52:26,925 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:52:26,925 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-11-25 17:52:26,925 INFO L748 eck$LassoCheckResult]: Stem: 366#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 367#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~i~0#1, main_~res~1#1;main_~i~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 376#L18 assume !(main_~i~0#1 <= 0); 373#L20 call main_#t~ret3#1 := rec(main_~i~0#1);< 380#recENTRY ~a := #in~a; 372#L5 assume !(0 == ~a); 369#L8 call #t~ret0 := rec(~a - 1);< 379#recENTRY ~a := #in~a; 368#L5 assume 0 == ~a;#res := 0; 371#recFINAL assume true; 387#recEXIT >#46#return; 394#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 374#L10-2 assume !(~rescopy~0 > 0); 375#L10-3 #res := 1 + ~res~0; 395#recFINAL assume true; 388#recEXIT >#48#return; 382#L20-1 main_~res~1#1 := main_#t~ret3#1;havoc main_#t~ret3#1; 383#L21-2 [2022-11-25 17:52:26,926 INFO L750 eck$LassoCheckResult]: Loop: 383#L21-2 assume !!(main_~res~1#1 < 1); 383#L21-2 [2022-11-25 17:52:26,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:52:26,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1542563482, now seen corresponding path program 1 times [2022-11-25 17:52:26,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:52:26,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589560670] [2022-11-25 17:52:26,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:26,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:52:26,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:52:26,943 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:52:26,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:52:26,961 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:52:26,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:52:26,963 INFO L85 PathProgramCache]: Analyzing trace with hash 70, now seen corresponding path program 2 times [2022-11-25 17:52:26,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:52:26,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978508247] [2022-11-25 17:52:26,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:26,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:52:26,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:52:26,967 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:52:26,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:52:26,970 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:52:26,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:52:26,970 INFO L85 PathProgramCache]: Analyzing trace with hash -574827647, now seen corresponding path program 1 times [2022-11-25 17:52:26,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:52:26,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58542450] [2022-11-25 17:52:26,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:26,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:52:26,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:52:27,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:52:27,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:52:27,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:52:27,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:52:27,164 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:52:27,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:52:27,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58542450] [2022-11-25 17:52:27,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58542450] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:52:27,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514746785] [2022-11-25 17:52:27,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:27,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:52:27,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:27,167 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:52:27,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-11-25 17:52:27,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:52:27,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 17:52:27,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:52:27,290 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:52:27,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:52:27,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514746785] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:52:27,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:52:27,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10 [2022-11-25 17:52:27,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641130216] [2022-11-25 17:52:27,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:52:27,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:52:27,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 17:52:27,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-25 17:52:27,298 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) [2022-11-25 17:52:27,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:27,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:27,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:52:27,375 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2022-11-25 17:52:27,375 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 35 transitions. [2022-11-25 17:52:27,376 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-11-25 17:52:27,377 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 23 states and 27 transitions. [2022-11-25 17:52:27,377 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2022-11-25 17:52:27,378 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2022-11-25 17:52:27,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 27 transitions. [2022-11-25 17:52:27,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 17:52:27,378 INFO L218 hiAutomatonCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-11-25 17:52:27,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 27 transitions. [2022-11-25 17:52:27,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2022-11-25 17:52:27,380 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) [2022-11-25 17:52:27,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-11-25 17:52:27,381 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-11-25 17:52:27,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:52:27,385 INFO L428 stractBuchiCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-11-25 17:52:27,385 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-25 17:52:27,385 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 23 transitions. [2022-11-25 17:52:27,387 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-11-25 17:52:27,387 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 17:52:27,387 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 17:52:27,389 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:52:27,389 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-11-25 17:52:27,389 INFO L748 eck$LassoCheckResult]: Stem: 517#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 518#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~i~0#1, main_~res~1#1;main_~i~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 511#L18 assume !(main_~i~0#1 <= 0); 512#L20 call main_#t~ret3#1 := rec(main_~i~0#1);< 520#recENTRY ~a := #in~a; 521#L5 assume !(0 == ~a); 514#L8 call #t~ret0 := rec(~a - 1);< 519#recENTRY ~a := #in~a; 523#L5 assume !(0 == ~a); 515#L8 call #t~ret0 := rec(~a - 1);< 519#recENTRY ~a := #in~a; 522#L5 assume 0 == ~a;#res := 0; 524#recFINAL assume true; 530#recEXIT >#46#return; 529#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 525#L10-2 assume !(~rescopy~0 > 0); 526#L10-3 #res := 1 + ~res~0; 528#recFINAL assume true; 527#recEXIT >#46#return; 513#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 516#L10-2 [2022-11-25 17:52:27,389 INFO L750 eck$LassoCheckResult]: Loop: 516#L10-2 assume !!(~rescopy~0 > 0);#t~post1 := ~rescopy~0;~rescopy~0 := #t~post1 - 1;havoc #t~post1; 516#L10-2 [2022-11-25 17:52:27,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:52:27,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1552442957, now seen corresponding path program 1 times [2022-11-25 17:52:27,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:52:27,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236045079] [2022-11-25 17:52:27,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:27,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:52:27,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:52:27,414 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:52:27,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:52:27,425 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:52:27,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:52:27,425 INFO L85 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 2 times [2022-11-25 17:52:27,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:52:27,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123542368] [2022-11-25 17:52:27,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:27,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:52:27,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:52:27,428 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:52:27,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:52:27,430 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:52:27,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:52:27,430 INFO L85 PathProgramCache]: Analyzing trace with hash -881091396, now seen corresponding path program 1 times [2022-11-25 17:52:27,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:52:27,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120061809] [2022-11-25 17:52:27,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:27,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:52:27,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:52:27,437 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:52:27,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:52:27,444 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:52:27,458 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 17:52:27,458 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 17:52:27,458 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 17:52:27,458 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 17:52:27,458 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-25 17:52:27,458 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:52:27,458 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 17:52:27,459 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 17:52:27,459 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter3.c_Iteration5_Loop [2022-11-25 17:52:27,459 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 17:52:27,459 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 17:52:27,460 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:52:27,466 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:52:27,484 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 17:52:27,484 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-25 17:52:27,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:52:27,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:27,485 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:52:27,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2022-11-25 17:52:27,491 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 17:52:27,491 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 17:52:27,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:27,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:52:27,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:27,528 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:52:27,532 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-25 17:52:27,532 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 17:52:27,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2022-11-25 17:52:27,567 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-25 17:52:27,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:27,577 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 17:52:27,577 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 17:52:27,577 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 17:52:27,577 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 17:52:27,577 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-25 17:52:27,577 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:52:27,578 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 17:52:27,578 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 17:52:27,578 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter3.c_Iteration5_Loop [2022-11-25 17:52:27,578 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 17:52:27,578 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 17:52:27,579 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:52:27,585 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:52:27,607 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 17:52:27,607 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-25 17:52:27,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:52:27,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:27,609 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:52:27,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2022-11-25 17:52:27,613 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 [2022-11-25 17:52:27,628 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 17:52:27,628 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 17:52:27,628 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 17:52:27,628 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 17:52:27,628 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 17:52:27,631 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 17:52:27,631 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 17:52:27,646 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-25 17:52:27,656 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-25 17:52:27,656 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-25 17:52:27,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:52:27,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:27,658 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:52:27,662 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-25 17:52:27,662 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-25 17:52:27,662 INFO L513 LassoAnalysis]: Proved termination. [2022-11-25 17:52:27,663 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_~rescopy~0) = 1*rec_~rescopy~0 Supporting invariants [] [2022-11-25 17:52:27,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2022-11-25 17:52:27,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:27,673 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-25 17:52:27,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:52:27,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:52:27,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 17:52:27,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:52:27,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:52:27,896 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:52:27,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:52:27,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:52:27,897 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 [2022-11-25 17:52:27,897 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) [2022-11-25 17:52:27,932 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. [2022-11-25 17:52:27,932 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 [2022-11-25 17:52:27,933 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) [2022-11-25 17:52:27,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2022-11-25 17:52:27,934 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 20 letters. Loop has 1 letters. [2022-11-25 17:52:27,934 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 17:52:27,934 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-25 17:52:27,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:52:27,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:52:27,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 17:52:27,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:52:28,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:52:28,119 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:52:28,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:52:28,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:52:28,120 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 [2022-11-25 17:52:28,120 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) [2022-11-25 17:52:28,150 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. [2022-11-25 17:52:28,151 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 [2022-11-25 17:52:28,151 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) [2022-11-25 17:52:28,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2022-11-25 17:52:28,152 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 20 letters. Loop has 1 letters. [2022-11-25 17:52:28,152 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 17:52:28,152 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-25 17:52:28,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:52:28,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:52:28,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 17:52:28,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:52:28,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:52:28,354 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:52:28,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:52:28,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:52:28,356 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 [2022-11-25 17:52:28,356 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) [2022-11-25 17:52:28,396 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. [2022-11-25 17:52:28,397 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 [2022-11-25 17:52:28,398 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) [2022-11-25 17:52:28,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2022-11-25 17:52:28,398 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 20 letters. Loop has 1 letters. [2022-11-25 17:52:28,398 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 17:52:28,399 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 21 letters. Loop has 1 letters. [2022-11-25 17:52:28,399 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 17:52:28,399 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 20 letters. Loop has 2 letters. [2022-11-25 17:52:28,399 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 17:52:28,399 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 41 transitions. [2022-11-25 17:52:28,400 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-25 17:52:28,401 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 0 states and 0 transitions. [2022-11-25 17:52:28,401 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-25 17:52:28,401 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-25 17:52:28,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-25 17:52:28,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:52:28,401 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 17:52:28,401 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 17:52:28,401 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 17:52:28,401 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-11-25 17:52:28,401 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-11-25 17:52:28,402 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-25 17:52:28,402 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-11-25 17:52:28,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 25.11 05:52:28 BoogieIcfgContainer [2022-11-25 17:52:28,409 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-25 17:52:28,410 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 17:52:28,410 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 17:52:28,410 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 17:52:28,411 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:52:22" (3/4) ... [2022-11-25 17:52:28,414 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 17:52:28,414 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 17:52:28,415 INFO L158 Benchmark]: Toolchain (without parser) took 6211.52ms. Allocated memory is still 178.3MB. Free memory was 141.4MB in the beginning and 53.6MB in the end (delta: 87.7MB). Peak memory consumption was 87.0MB. Max. memory is 16.1GB. [2022-11-25 17:52:28,415 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 130.0MB. Free memory is still 96.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:52:28,415 INFO L158 Benchmark]: CACSL2BoogieTranslator took 340.12ms. Allocated memory is still 178.3MB. Free memory was 141.4MB in the beginning and 144.8MB in the end (delta: -3.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-25 17:52:28,416 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.07ms. Allocated memory is still 178.3MB. Free memory was 144.1MB in the beginning and 143.5MB in the end (delta: 673.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:52:28,416 INFO L158 Benchmark]: Boogie Preprocessor took 24.50ms. Allocated memory is still 178.3MB. Free memory was 143.5MB in the beginning and 142.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:52:28,416 INFO L158 Benchmark]: RCFGBuilder took 334.27ms. Allocated memory is still 178.3MB. Free memory was 142.0MB in the beginning and 133.0MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-25 17:52:28,416 INFO L158 Benchmark]: BuchiAutomizer took 5465.66ms. Allocated memory is still 178.3MB. Free memory was 133.0MB in the beginning and 54.7MB in the end (delta: 78.3MB). Peak memory consumption was 80.7MB. Max. memory is 16.1GB. [2022-11-25 17:52:28,417 INFO L158 Benchmark]: Witness Printer took 4.04ms. Allocated memory is still 178.3MB. Free memory was 54.7MB in the beginning and 53.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:52:28,418 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 130.0MB. Free memory is still 96.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 340.12ms. Allocated memory is still 178.3MB. Free memory was 141.4MB in the beginning and 144.8MB in the end (delta: -3.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.07ms. Allocated memory is still 178.3MB. Free memory was 144.1MB in the beginning and 143.5MB in the end (delta: 673.9kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.50ms. Allocated memory is still 178.3MB. Free memory was 143.5MB in the beginning and 142.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 334.27ms. Allocated memory is still 178.3MB. Free memory was 142.0MB in the beginning and 133.0MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 5465.66ms. Allocated memory is still 178.3MB. Free memory was 133.0MB in the beginning and 54.7MB in the end (delta: 78.3MB). Peak memory consumption was 80.7MB. Max. memory is 16.1GB. * Witness Printer took 4.04ms. Allocated memory is still 178.3MB. Free memory was 54.7MB in the beginning and 53.6MB in the end (delta: 1.0MB). 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 5.4s and 6 iterations. TraceHistogramMax:3. Analysis of lassos took 3.7s. 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: 165ms 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! [2022-11-25 17:52:28,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Ended with exit code 0 [2022-11-25 17:52:28,632 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-11-25 17:52:28,833 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6a0f2a0-0fa2-4fb8-919d-d7fbe8797b98/bin/uautomizer-ZsLfNo2U6R/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