./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-numeric/Binomial.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-numeric/Binomial.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt --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 7271d13f0b7b365fd7ecc81e9b65f9e103181ef3 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/config using search string *Termination*64bit*_Bitvector*.epf No suitable settings file found using Termination*64bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: loopTF is false but loop analysis said: feasible --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:09:15,481 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:09:15,484 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:09:15,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:09:15,533 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:09:15,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:09:15,536 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:09:15,539 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:09:15,541 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:09:15,542 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:09:15,544 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:09:15,545 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:09:15,546 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:09:15,547 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:09:15,549 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:09:15,551 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:09:15,552 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:09:15,553 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:09:15,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:09:15,559 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:09:15,565 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:09:15,570 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:09:15,572 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:09:15,575 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:09:15,579 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:09:15,585 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:09:15,586 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:09:15,587 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:09:15,591 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:09:15,593 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:09:15,594 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:09:15,595 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:09:15,596 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:09:15,598 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:09:15,599 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:09:15,600 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:09:15,601 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:09:15,602 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:09:15,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:09:15,603 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:09:15,604 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:09:15,605 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-13 00:09:15,658 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:09:15,663 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:09:15,663 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:09:15,664 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:09:15,665 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:09:15,665 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:09:15,666 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:09:15,666 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-13 00:09:15,666 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-13 00:09:15,666 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-13 00:09:15,668 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-13 00:09:15,668 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-13 00:09:15,668 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-13 00:09:15,668 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:09:15,669 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 00:09:15,669 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:09:15,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:09:15,669 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-13 00:09:15,669 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-13 00:09:15,670 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-13 00:09:15,671 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:09:15,676 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-13 00:09:15,677 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:09:15,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-13 00:09:15,678 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:09:15,678 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:09:15,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:09:15,684 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:09:15,685 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:09:15,686 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-13 00:09:15,687 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_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7271d13f0b7b365fd7ecc81e9b65f9e103181ef3 [2021-10-13 00:09:15,959 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:09:15,981 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:09:15,984 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:09:15,986 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:09:15,986 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:09:15,987 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/termination-numeric/Binomial.c [2021-10-13 00:09:16,066 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/data/4961956dc/e0e7f0d9b732472ba08887775af1c808/FLAG7b5de84f0 [2021-10-13 00:09:16,634 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:09:16,635 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/sv-benchmarks/c/termination-numeric/Binomial.c [2021-10-13 00:09:16,646 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/data/4961956dc/e0e7f0d9b732472ba08887775af1c808/FLAG7b5de84f0 [2021-10-13 00:09:17,000 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/data/4961956dc/e0e7f0d9b732472ba08887775af1c808 [2021-10-13 00:09:17,006 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:09:17,007 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:09:17,012 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:09:17,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:09:17,016 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:09:17,017 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:09:17" (1/1) ... [2021-10-13 00:09:17,018 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40ca86e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:17, skipping insertion in model container [2021-10-13 00:09:17,019 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:09:17" (1/1) ... [2021-10-13 00:09:17,028 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:09:17,043 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:09:17,207 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:09:17,211 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:09:17,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:09:17,240 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:09:17,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:17 WrapperNode [2021-10-13 00:09:17,242 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:09:17,243 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:09:17,243 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:09:17,244 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:09:17,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:17" (1/1) ... [2021-10-13 00:09:17,278 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:17" (1/1) ... [2021-10-13 00:09:17,306 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:09:17,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:09:17,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:09:17,307 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:09:17,315 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:17" (1/1) ... [2021-10-13 00:09:17,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:17" (1/1) ... [2021-10-13 00:09:17,317 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:17" (1/1) ... [2021-10-13 00:09:17,317 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:17" (1/1) ... [2021-10-13 00:09:17,320 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:17" (1/1) ... [2021-10-13 00:09:17,324 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:17" (1/1) ... [2021-10-13 00:09:17,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:17" (1/1) ... [2021-10-13 00:09:17,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:09:17,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:09:17,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:09:17,328 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:09:17,329 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:17" (1/1) ... [2021-10-13 00:09:17,337 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:17,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:17,369 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:17,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-13 00:09:17,410 INFO L130 BoogieDeclarations]: Found specification of procedure fact [2021-10-13 00:09:17,410 INFO L138 BoogieDeclarations]: Found implementation of procedure fact [2021-10-13 00:09:17,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:09:17,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:09:17,632 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:09:17,633 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-13 00:09:17,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:09:17 BoogieIcfgContainer [2021-10-13 00:09:17,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:09:17,636 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-13 00:09:17,636 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-13 00:09:17,639 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-13 00:09:17,640 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 00:09:17,640 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.10 12:09:17" (1/3) ... [2021-10-13 00:09:17,642 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3cab923c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 12:09:17, skipping insertion in model container [2021-10-13 00:09:17,642 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 00:09:17,642 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:17" (2/3) ... [2021-10-13 00:09:17,643 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3cab923c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 12:09:17, skipping insertion in model container [2021-10-13 00:09:17,643 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 00:09:17,643 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:09:17" (3/3) ... [2021-10-13 00:09:17,644 INFO L389 chiAutomizerObserver]: Analyzing ICFG Binomial.c [2021-10-13 00:09:17,706 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-13 00:09:17,706 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-13 00:09:17,706 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-13 00:09:17,707 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-13 00:09:17,707 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-13 00:09:17,707 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-13 00:09:17,707 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-13 00:09:17,707 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-13 00:09:17,728 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 27 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-13 00:09:17,758 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 18 [2021-10-13 00:09:17,758 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:09:17,758 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:09:17,764 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-13 00:09:17,764 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-13 00:09:17,765 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-13 00:09:17,765 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 27 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-13 00:09:17,773 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 18 [2021-10-13 00:09:17,774 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:09:17,774 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:09:17,774 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-13 00:09:17,774 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-13 00:09:17,782 INFO L791 eck$LassoCheckResult]: Stem: 18#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, main_#t~ret9, main_#t~ret10, main_#t~post8, main_~k~0, main_#t~post7, main_~n~0, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := main_#t~nondet4;havoc main_#t~nondet4; 17#L35true assume !(main_~x~0 < 0);main_~y~0 := main_#t~nondet5;havoc main_#t~nondet5; 27#L38true assume !(main_~y~0 < 0);main_~z~0 := main_#t~nondet6;havoc main_#t~nondet6;main_~n~0 := 0; 13#L41-3true [2021-10-13 00:09:17,783 INFO L793 eck$LassoCheckResult]: Loop: 13#L41-3true assume !!(main_~n~0 <= main_~x~0);main_~k~0 := 0; 22#L42-3true assume !(main_~k~0 <= main_~x~0); 14#L41-2true main_#t~post7 := main_~n~0;main_~n~0 := 1 + main_#t~post7;havoc main_#t~post7; 13#L41-3true [2021-10-13 00:09:17,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:17,789 INFO L82 PathProgramCache]: Analyzing trace with hash 38893, now seen corresponding path program 1 times [2021-10-13 00:09:17,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:09:17,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359640747] [2021-10-13 00:09:17,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:17,803 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:09:17,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:09:17,892 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:09:17,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:09:17,932 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:09:17,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:17,935 INFO L82 PathProgramCache]: Analyzing trace with hash 56819, now seen corresponding path program 1 times [2021-10-13 00:09:17,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:09:17,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239225691] [2021-10-13 00:09:17,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:17,936 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:09:17,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:09:17,946 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:09:17,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:09:17,952 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:09:17,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:17,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1158688391, now seen corresponding path program 1 times [2021-10-13 00:09:17,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:09:17,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916872745] [2021-10-13 00:09:17,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:17,956 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:09:17,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:09:18,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:09:18,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:09:18,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916872745] [2021-10-13 00:09:18,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916872745] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:09:18,076 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:09:18,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:09:18,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541667470] [2021-10-13 00:09:18,142 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:09:18,142 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:09:18,142 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:09:18,143 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:09:18,143 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 00:09:18,143 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:18,143 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:09:18,143 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:09:18,144 INFO L133 ssoRankerPreferences]: Filename of dumped script: Binomial.c_Iteration1_Loop [2021-10-13 00:09:18,144 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:09:18,144 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:09:18,161 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:09:18,167 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:09:18,237 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:09:18,238 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 00:09:18,240 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:18,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:18,243 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:18,261 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:09:18,261 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:09:18,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-13 00:09:18,292 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:09:18,292 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post7=0} Honda state: {ULTIMATE.start_main_#t~post7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:09:18,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:18,331 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:18,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:18,333 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:18,341 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:09:18,342 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:09:18,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-13 00:09:18,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:18,411 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:18,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:18,413 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:18,420 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 00:09:18,420 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:09:18,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-13 00:09:18,688 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 00:09:18,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:18,696 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:09:18,696 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:09:18,697 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:09:18,697 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:09:18,697 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 00:09:18,697 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:18,697 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:09:18,697 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:09:18,697 INFO L133 ssoRankerPreferences]: Filename of dumped script: Binomial.c_Iteration1_Loop [2021-10-13 00:09:18,698 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:09:18,698 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:09:18,699 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:09:18,706 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:09:18,830 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:09:18,835 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 00:09:18,837 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:18,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:18,845 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:18,851 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 [2021-10-13 00:09:18,861 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:09:18,862 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:18,862 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:18,862 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:18,863 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:09:18,865 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:09:18,866 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:18,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-13 00:09:18,888 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:18,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:18,930 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:18,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:18,931 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:18,934 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 00:09:18,944 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:09:18,944 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:18,944 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:18,945 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:18,945 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:09:18,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-13 00:09:18,952 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:09:18,955 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:18,972 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 00:09:18,990 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2021-10-13 00:09:18,990 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 2 variables to zero. [2021-10-13 00:09:18,992 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:18,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:18,994 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:19,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-13 00:09:19,007 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 00:09:19,008 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 00:09:19,008 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 00:09:19,008 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0) = -1*ULTIMATE.start_main_~n~0 Supporting invariants [] [2021-10-13 00:09:19,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:19,041 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 00:09:19,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:19,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:09:19,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:09:19,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:09:19,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:09:19,095 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 00:09:19,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:09:19,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:09:19,198 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-10-13 00:09:19,201 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 27 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:19,314 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 27 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7). Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 72 states and 105 transitions. Complement of second has 11 states. [2021-10-13 00:09:19,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-10-13 00:09:19,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:19,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 53 transitions. [2021-10-13 00:09:19,322 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 53 transitions. Stem has 3 letters. Loop has 3 letters. [2021-10-13 00:09:19,322 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:09:19,323 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 53 transitions. Stem has 6 letters. Loop has 3 letters. [2021-10-13 00:09:19,323 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:09:19,323 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 53 transitions. Stem has 3 letters. Loop has 6 letters. [2021-10-13 00:09:19,323 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:09:19,324 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 72 states and 105 transitions. [2021-10-13 00:09:19,338 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 18 [2021-10-13 00:09:19,347 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 72 states to 32 states and 47 transitions. [2021-10-13 00:09:19,348 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2021-10-13 00:09:19,349 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2021-10-13 00:09:19,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 47 transitions. [2021-10-13 00:09:19,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 00:09:19,350 INFO L681 BuchiCegarLoop]: Abstraction has 32 states and 47 transitions. [2021-10-13 00:09:19,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 47 transitions. [2021-10-13 00:09:19,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2021-10-13 00:09:19,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 20 states have internal predecessors, (27), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-13 00:09:19,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 41 transitions. [2021-10-13 00:09:19,387 INFO L704 BuchiCegarLoop]: Abstraction has 29 states and 41 transitions. [2021-10-13 00:09:19,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:09:19,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:09:19,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:09:19,393 INFO L87 Difference]: Start difference. First operand 29 states and 41 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:19,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:09:19,450 INFO L93 Difference]: Finished difference Result 28 states and 37 transitions. [2021-10-13 00:09:19,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:09:19,451 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 37 transitions. [2021-10-13 00:09:19,454 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 19 [2021-10-13 00:09:19,458 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 27 states and 36 transitions. [2021-10-13 00:09:19,458 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 27 [2021-10-13 00:09:19,459 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2021-10-13 00:09:19,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 36 transitions. [2021-10-13 00:09:19,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 00:09:19,460 INFO L681 BuchiCegarLoop]: Abstraction has 27 states and 36 transitions. [2021-10-13 00:09:19,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 36 transitions. [2021-10-13 00:09:19,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2021-10-13 00:09:19,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 16 states have internal predecessors, (20), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-13 00:09:19,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2021-10-13 00:09:19,464 INFO L704 BuchiCegarLoop]: Abstraction has 25 states and 34 transitions. [2021-10-13 00:09:19,465 INFO L587 BuchiCegarLoop]: Abstraction has 25 states and 34 transitions. [2021-10-13 00:09:19,465 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-13 00:09:19,465 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 34 transitions. [2021-10-13 00:09:19,466 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 19 [2021-10-13 00:09:19,466 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:09:19,466 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:09:19,467 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-13 00:09:19,467 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:09:19,467 INFO L791 eck$LassoCheckResult]: Stem: 225#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, main_#t~ret9, main_#t~ret10, main_#t~post8, main_~k~0, main_#t~post7, main_~n~0, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := main_#t~nondet4;havoc main_#t~nondet4; 226#L35 assume !(main_~x~0 < 0);main_~y~0 := main_#t~nondet5;havoc main_#t~nondet5; 233#L38 assume !(main_~y~0 < 0);main_~z~0 := main_#t~nondet6;havoc main_#t~nondet6;main_~n~0 := 0; 234#L41-3 [2021-10-13 00:09:19,468 INFO L793 eck$LassoCheckResult]: Loop: 234#L41-3 assume !!(main_~n~0 <= main_~x~0);main_~k~0 := 0; 229#L42-3 assume !!(main_~k~0 <= main_~x~0); 228#L43 assume !(main_~k~0 <= main_~n~0);binomialCoefficient_#in~n, binomialCoefficient_#in~k := main_~k~0, main_~n~0;havoc binomialCoefficient_#res;havoc binomialCoefficient_#t~ret1, binomialCoefficient_#t~ret2, binomialCoefficient_#t~ret3, binomialCoefficient_~n, binomialCoefficient_~k;binomialCoefficient_~n := binomialCoefficient_#in~n;binomialCoefficient_~k := binomialCoefficient_#in~k; 212#L30-5 call binomialCoefficient_#t~ret1 := fact(binomialCoefficient_~n);< 213#factENTRY ~n := #in~n; 227#L25 assume ~n <= 0;#res := 1; 224#factFINAL assume true; 214#factEXIT >#73#return; 216#L30-6 call binomialCoefficient_#t~ret2 := fact(binomialCoefficient_~k);< 213#factENTRY ~n := #in~n; 227#L25 assume ~n <= 0;#res := 1; 224#factFINAL assume true; 214#factEXIT >#75#return; 218#L30-7 call binomialCoefficient_#t~ret3 := fact(binomialCoefficient_~n - binomialCoefficient_~k);< 213#factENTRY ~n := #in~n; 227#L25 assume ~n <= 0;#res := 1; 224#factFINAL assume true; 214#factEXIT >#77#return; 222#L30-8 binomialCoefficient_#res := (if binomialCoefficient_#t~ret1 < 0 && 0 != binomialCoefficient_#t~ret1 % (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3) then (if binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3 < 0 then binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3) - 1 else 1 + binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3)) else binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3));havoc binomialCoefficient_#t~ret1;havoc binomialCoefficient_#t~ret2;havoc binomialCoefficient_#t~ret3; 230#L30-9 main_#t~ret10 := binomialCoefficient_#res;havoc main_#t~ret10; 231#L42-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 232#L42-3 assume !(main_~k~0 <= main_~x~0); 236#L41-2 main_#t~post7 := main_~n~0;main_~n~0 := 1 + main_#t~post7;havoc main_#t~post7; 234#L41-3 [2021-10-13 00:09:19,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:19,468 INFO L82 PathProgramCache]: Analyzing trace with hash 38893, now seen corresponding path program 2 times [2021-10-13 00:09:19,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:09:19,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132106391] [2021-10-13 00:09:19,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:19,469 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:09:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:09:19,474 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:09:19,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:09:19,478 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:09:19,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:19,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1052427359, now seen corresponding path program 1 times [2021-10-13 00:09:19,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:09:19,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611907249] [2021-10-13 00:09:19,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:19,480 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:09:19,491 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:09:19,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1640621172] [2021-10-13 00:09:19,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:19,492 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:09:19,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:19,493 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:09:19,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-13 00:09:19,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:09:19,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 00:09:19,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:09:19,631 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 00:09:19,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:09:19,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611907249] [2021-10-13 00:09:19,632 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:09:19,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640621172] [2021-10-13 00:09:19,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640621172] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:09:19,632 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:09:19,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 00:09:19,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893434294] [2021-10-13 00:09:19,633 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 00:09:19,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:09:19,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:09:19,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:09:19,634 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. cyclomatic complexity: 11 Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-13 00:09:19,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:09:19,698 INFO L93 Difference]: Finished difference Result 33 states and 49 transitions. [2021-10-13 00:09:19,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:09:19,699 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 49 transitions. [2021-10-13 00:09:19,701 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 25 [2021-10-13 00:09:19,702 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 33 states and 49 transitions. [2021-10-13 00:09:19,702 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2021-10-13 00:09:19,703 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2021-10-13 00:09:19,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 49 transitions. [2021-10-13 00:09:19,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 00:09:19,703 INFO L681 BuchiCegarLoop]: Abstraction has 33 states and 49 transitions. [2021-10-13 00:09:19,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states and 49 transitions. [2021-10-13 00:09:19,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 27. [2021-10-13 00:09:19,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 7 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2021-10-13 00:09:19,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 41 transitions. [2021-10-13 00:09:19,709 INFO L704 BuchiCegarLoop]: Abstraction has 27 states and 41 transitions. [2021-10-13 00:09:19,709 INFO L587 BuchiCegarLoop]: Abstraction has 27 states and 41 transitions. [2021-10-13 00:09:19,709 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-13 00:09:19,709 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 41 transitions. [2021-10-13 00:09:19,710 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 19 [2021-10-13 00:09:19,710 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:09:19,710 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:09:19,712 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-13 00:09:19,712 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [6, 6, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:09:19,712 INFO L791 eck$LassoCheckResult]: Stem: 358#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, main_#t~ret9, main_#t~ret10, main_#t~post8, main_~k~0, main_#t~post7, main_~n~0, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := main_#t~nondet4;havoc main_#t~nondet4; 359#L35 assume !(main_~x~0 < 0);main_~y~0 := main_#t~nondet5;havoc main_#t~nondet5; 368#L38 assume !(main_~y~0 < 0);main_~z~0 := main_#t~nondet6;havoc main_#t~nondet6;main_~n~0 := 0; 369#L41-3 [2021-10-13 00:09:19,713 INFO L793 eck$LassoCheckResult]: Loop: 369#L41-3 assume !!(main_~n~0 <= main_~x~0);main_~k~0 := 0; 363#L42-3 assume !!(main_~k~0 <= main_~x~0); 361#L43 assume main_~k~0 <= main_~n~0;binomialCoefficient_#in~n, binomialCoefficient_#in~k := main_~n~0, main_~k~0;havoc binomialCoefficient_#res;havoc binomialCoefficient_#t~ret1, binomialCoefficient_#t~ret2, binomialCoefficient_#t~ret3, binomialCoefficient_~n, binomialCoefficient_~k;binomialCoefficient_~n := binomialCoefficient_#in~n;binomialCoefficient_~k := binomialCoefficient_#in~k; 354#L30 call binomialCoefficient_#t~ret1 := fact(binomialCoefficient_~n);< 347#factENTRY ~n := #in~n; 360#L25 assume !(~n <= 0); 349#L26 call #t~ret0 := fact(~n - 1);< 347#factENTRY ~n := #in~n; 360#L25 assume ~n <= 0;#res := 1; 357#factFINAL assume true; 348#factEXIT >#65#return; 355#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 362#factFINAL assume true; 372#factEXIT >#67#return; 350#L30-1 call binomialCoefficient_#t~ret2 := fact(binomialCoefficient_~k);< 347#factENTRY ~n := #in~n; 360#L25 assume !(~n <= 0); 349#L26 call #t~ret0 := fact(~n - 1);< 347#factENTRY ~n := #in~n; 360#L25 assume ~n <= 0;#res := 1; 357#factFINAL assume true; 348#factEXIT >#65#return; 355#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 362#factFINAL assume true; 372#factEXIT >#69#return; 352#L30-2 call binomialCoefficient_#t~ret3 := fact(binomialCoefficient_~n - binomialCoefficient_~k);< 347#factENTRY ~n := #in~n; 360#L25 assume !(~n <= 0); 349#L26 call #t~ret0 := fact(~n - 1);< 347#factENTRY ~n := #in~n; 360#L25 assume ~n <= 0;#res := 1; 357#factFINAL assume true; 348#factEXIT >#65#return; 355#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 362#factFINAL assume true; 372#factEXIT >#71#return; 356#L30-3 binomialCoefficient_#res := (if binomialCoefficient_#t~ret1 < 0 && 0 != binomialCoefficient_#t~ret1 % (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3) then (if binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3 < 0 then binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3) - 1 else 1 + binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3)) else binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3));havoc binomialCoefficient_#t~ret1;havoc binomialCoefficient_#t~ret2;havoc binomialCoefficient_#t~ret3; 370#L30-4 main_#t~ret9 := binomialCoefficient_#res;havoc main_#t~ret9; 366#L42-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 367#L42-3 assume !(main_~k~0 <= main_~x~0); 371#L41-2 main_#t~post7 := main_~n~0;main_~n~0 := 1 + main_#t~post7;havoc main_#t~post7; 369#L41-3 [2021-10-13 00:09:19,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:19,713 INFO L82 PathProgramCache]: Analyzing trace with hash 38893, now seen corresponding path program 3 times [2021-10-13 00:09:19,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:09:19,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598277206] [2021-10-13 00:09:19,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:19,714 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:09:19,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:09:19,723 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:09:19,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:09:19,728 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:09:19,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:19,729 INFO L82 PathProgramCache]: Analyzing trace with hash 595054747, now seen corresponding path program 1 times [2021-10-13 00:09:19,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:09:19,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711242140] [2021-10-13 00:09:19,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:19,729 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:09:19,738 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:09:19,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1198816297] [2021-10-13 00:09:19,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:19,739 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:09:19,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:19,796 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:09:19,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-13 00:09:19,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:09:19,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 00:09:19,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:09:20,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:20,067 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-10-13 00:09:20,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:09:20,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711242140] [2021-10-13 00:09:20,068 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:09:20,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198816297] [2021-10-13 00:09:20,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198816297] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:09:20,068 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:09:20,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-13 00:09:20,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855255600] [2021-10-13 00:09:20,069 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 00:09:20,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:09:20,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:09:20,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:09:20,071 INFO L87 Difference]: Start difference. First operand 27 states and 41 transitions. cyclomatic complexity: 16 Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-10-13 00:09:20,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:09:20,258 INFO L93 Difference]: Finished difference Result 45 states and 72 transitions. [2021-10-13 00:09:20,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:09:20,259 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 72 transitions. [2021-10-13 00:09:20,264 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 37 [2021-10-13 00:09:20,268 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 45 states and 72 transitions. [2021-10-13 00:09:20,269 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 45 [2021-10-13 00:09:20,271 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 45 [2021-10-13 00:09:20,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 72 transitions. [2021-10-13 00:09:20,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 00:09:20,274 INFO L681 BuchiCegarLoop]: Abstraction has 45 states and 72 transitions. [2021-10-13 00:09:20,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 72 transitions. [2021-10-13 00:09:20,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 32. [2021-10-13 00:09:20,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 11 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (19), 9 states have call predecessors, (19), 11 states have call successors, (19) [2021-10-13 00:09:20,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 53 transitions. [2021-10-13 00:09:20,284 INFO L704 BuchiCegarLoop]: Abstraction has 32 states and 53 transitions. [2021-10-13 00:09:20,284 INFO L587 BuchiCegarLoop]: Abstraction has 32 states and 53 transitions. [2021-10-13 00:09:20,284 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-13 00:09:20,284 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 53 transitions. [2021-10-13 00:09:20,287 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 24 [2021-10-13 00:09:20,287 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:09:20,287 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:09:20,290 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-13 00:09:20,290 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [5, 5, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:09:20,290 INFO L791 eck$LassoCheckResult]: Stem: 567#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, main_#t~ret9, main_#t~ret10, main_#t~post8, main_~k~0, main_#t~post7, main_~n~0, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := main_#t~nondet4;havoc main_#t~nondet4; 568#L35 assume !(main_~x~0 < 0);main_~y~0 := main_#t~nondet5;havoc main_#t~nondet5; 577#L38 assume !(main_~y~0 < 0);main_~z~0 := main_#t~nondet6;havoc main_#t~nondet6;main_~n~0 := 0; 578#L41-3 [2021-10-13 00:09:20,291 INFO L793 eck$LassoCheckResult]: Loop: 578#L41-3 assume !!(main_~n~0 <= main_~x~0);main_~k~0 := 0; 572#L42-3 assume !!(main_~k~0 <= main_~x~0); 570#L43 assume main_~k~0 <= main_~n~0;binomialCoefficient_#in~n, binomialCoefficient_#in~k := main_~n~0, main_~k~0;havoc binomialCoefficient_#res;havoc binomialCoefficient_#t~ret1, binomialCoefficient_#t~ret2, binomialCoefficient_#t~ret3, binomialCoefficient_~n, binomialCoefficient_~k;binomialCoefficient_~n := binomialCoefficient_#in~n;binomialCoefficient_~k := binomialCoefficient_#in~k; 563#L30 call binomialCoefficient_#t~ret1 := fact(binomialCoefficient_~n);< 552#factENTRY ~n := #in~n; 569#L25 assume !(~n <= 0); 554#L26 call #t~ret0 := fact(~n - 1);< 552#factENTRY ~n := #in~n; 569#L25 assume ~n <= 0;#res := 1; 566#factFINAL assume true; 553#factEXIT >#65#return; 564#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 571#factFINAL assume true; 581#factEXIT >#67#return; 555#L30-1 call binomialCoefficient_#t~ret2 := fact(binomialCoefficient_~k);< 552#factENTRY ~n := #in~n; 569#L25 assume ~n <= 0;#res := 1; 566#factFINAL assume true; 553#factEXIT >#69#return; 557#L30-2 call binomialCoefficient_#t~ret3 := fact(binomialCoefficient_~n - binomialCoefficient_~k);< 552#factENTRY ~n := #in~n; 569#L25 assume !(~n <= 0); 554#L26 call #t~ret0 := fact(~n - 1);< 552#factENTRY ~n := #in~n; 569#L25 assume ~n <= 0;#res := 1; 566#factFINAL assume true; 553#factEXIT >#65#return; 564#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 571#factFINAL assume true; 581#factEXIT >#71#return; 565#L30-3 binomialCoefficient_#res := (if binomialCoefficient_#t~ret1 < 0 && 0 != binomialCoefficient_#t~ret1 % (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3) then (if binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3 < 0 then binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3) - 1 else 1 + binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3)) else binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3));havoc binomialCoefficient_#t~ret1;havoc binomialCoefficient_#t~ret2;havoc binomialCoefficient_#t~ret3; 579#L30-4 main_#t~ret9 := binomialCoefficient_#res;havoc main_#t~ret9; 575#L42-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 576#L42-3 assume !(main_~k~0 <= main_~x~0); 580#L41-2 main_#t~post7 := main_~n~0;main_~n~0 := 1 + main_#t~post7;havoc main_#t~post7; 578#L41-3 [2021-10-13 00:09:20,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:20,292 INFO L82 PathProgramCache]: Analyzing trace with hash 38893, now seen corresponding path program 4 times [2021-10-13 00:09:20,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:09:20,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784482316] [2021-10-13 00:09:20,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:20,292 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:09:20,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:09:20,299 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:09:20,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:09:20,306 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:09:20,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:20,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1540584337, now seen corresponding path program 2 times [2021-10-13 00:09:20,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:09:20,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081077705] [2021-10-13 00:09:20,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:20,307 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:09:20,316 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:09:20,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1047867234] [2021-10-13 00:09:20,316 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:09:20,317 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:09:20,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:20,318 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:09:20,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-13 00:09:20,398 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:09:20,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:09:20,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 00:09:20,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:09:20,665 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-10-13 00:09:20,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:09:20,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081077705] [2021-10-13 00:09:20,666 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:09:20,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047867234] [2021-10-13 00:09:20,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047867234] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:09:20,668 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:09:20,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-13 00:09:20,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86466474] [2021-10-13 00:09:20,669 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 00:09:20,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:09:20,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:09:20,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:09:20,670 INFO L87 Difference]: Start difference. First operand 32 states and 53 transitions. cyclomatic complexity: 23 Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 4 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-10-13 00:09:21,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:09:21,044 INFO L93 Difference]: Finished difference Result 58 states and 97 transitions. [2021-10-13 00:09:21,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:09:21,045 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 58 states and 97 transitions. [2021-10-13 00:09:21,052 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 50 [2021-10-13 00:09:21,062 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 58 states to 58 states and 97 transitions. [2021-10-13 00:09:21,063 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 58 [2021-10-13 00:09:21,064 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 58 [2021-10-13 00:09:21,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 97 transitions. [2021-10-13 00:09:21,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 00:09:21,066 INFO L681 BuchiCegarLoop]: Abstraction has 58 states and 97 transitions. [2021-10-13 00:09:21,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states and 97 transitions. [2021-10-13 00:09:21,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 38. [2021-10-13 00:09:21,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 13 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (22), 12 states have call predecessors, (22), 13 states have call successors, (22) [2021-10-13 00:09:21,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 62 transitions. [2021-10-13 00:09:21,075 INFO L704 BuchiCegarLoop]: Abstraction has 38 states and 62 transitions. [2021-10-13 00:09:21,075 INFO L587 BuchiCegarLoop]: Abstraction has 38 states and 62 transitions. [2021-10-13 00:09:21,075 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-13 00:09:21,075 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 38 states and 62 transitions. [2021-10-13 00:09:21,076 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2021-10-13 00:09:21,076 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:09:21,076 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:09:21,077 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-13 00:09:21,077 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [5, 5, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:09:21,077 INFO L791 eck$LassoCheckResult]: Stem: 779#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, main_#t~ret9, main_#t~ret10, main_#t~post8, main_~k~0, main_#t~post7, main_~n~0, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := main_#t~nondet4;havoc main_#t~nondet4; 780#L35 assume !(main_~x~0 < 0);main_~y~0 := main_#t~nondet5;havoc main_#t~nondet5; 789#L38 assume !(main_~y~0 < 0);main_~z~0 := main_#t~nondet6;havoc main_#t~nondet6;main_~n~0 := 0; 790#L41-3 [2021-10-13 00:09:21,077 INFO L793 eck$LassoCheckResult]: Loop: 790#L41-3 assume !!(main_~n~0 <= main_~x~0);main_~k~0 := 0; 792#L42-3 assume !!(main_~k~0 <= main_~x~0); 797#L43 assume !(main_~k~0 <= main_~n~0);binomialCoefficient_#in~n, binomialCoefficient_#in~k := main_~k~0, main_~n~0;havoc binomialCoefficient_#res;havoc binomialCoefficient_#t~ret1, binomialCoefficient_#t~ret2, binomialCoefficient_#t~ret3, binomialCoefficient_~n, binomialCoefficient_~k;binomialCoefficient_~n := binomialCoefficient_#in~n;binomialCoefficient_~k := binomialCoefficient_#in~k; 760#L30-5 call binomialCoefficient_#t~ret1 := fact(binomialCoefficient_~n);< 761#factENTRY ~n := #in~n; 783#L25 assume !(~n <= 0); 767#L26 call #t~ret0 := fact(~n - 1);< 761#factENTRY ~n := #in~n; 783#L25 assume ~n <= 0;#res := 1; 781#factFINAL assume true; 782#factEXIT >#65#return; 775#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 785#factFINAL assume true; 762#factEXIT >#73#return; 772#L30-6 call binomialCoefficient_#t~ret2 := fact(binomialCoefficient_~k);< 761#factENTRY ~n := #in~n; 783#L25 assume ~n <= 0;#res := 1; 781#factFINAL assume true; 782#factEXIT >#75#return; 771#L30-7 call binomialCoefficient_#t~ret3 := fact(binomialCoefficient_~n - binomialCoefficient_~k);< 761#factENTRY ~n := #in~n; 783#L25 assume !(~n <= 0); 767#L26 call #t~ret0 := fact(~n - 1);< 761#factENTRY ~n := #in~n; 783#L25 assume ~n <= 0;#res := 1; 781#factFINAL assume true; 782#factEXIT >#65#return; 775#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 785#factFINAL assume true; 762#factEXIT >#77#return; 777#L30-8 binomialCoefficient_#res := (if binomialCoefficient_#t~ret1 < 0 && 0 != binomialCoefficient_#t~ret1 % (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3) then (if binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3 < 0 then binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3) - 1 else 1 + binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3)) else binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3));havoc binomialCoefficient_#t~ret1;havoc binomialCoefficient_#t~ret2;havoc binomialCoefficient_#t~ret3; 787#L30-9 main_#t~ret10 := binomialCoefficient_#res;havoc main_#t~ret10; 791#L42-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 795#L42-3 assume !(main_~k~0 <= main_~x~0); 794#L41-2 main_#t~post7 := main_~n~0;main_~n~0 := 1 + main_#t~post7;havoc main_#t~post7; 790#L41-3 [2021-10-13 00:09:21,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:21,077 INFO L82 PathProgramCache]: Analyzing trace with hash 38893, now seen corresponding path program 5 times [2021-10-13 00:09:21,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:09:21,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860423784] [2021-10-13 00:09:21,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:21,078 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:09:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:09:21,082 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:09:21,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:09:21,086 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:09:21,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:21,087 INFO L82 PathProgramCache]: Analyzing trace with hash 646106509, now seen corresponding path program 1 times [2021-10-13 00:09:21,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:09:21,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146461873] [2021-10-13 00:09:21,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:21,088 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:09:21,096 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:09:21,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1781955400] [2021-10-13 00:09:21,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:21,097 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:09:21,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:21,099 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:09:21,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-13 00:09:21,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:09:21,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 00:09:21,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:09:21,310 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-13 00:09:21,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:09:21,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146461873] [2021-10-13 00:09:21,311 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:09:21,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781955400] [2021-10-13 00:09:21,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781955400] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:09:21,312 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:09:21,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-13 00:09:21,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134228548] [2021-10-13 00:09:21,312 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 00:09:21,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:09:21,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:09:21,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:09:21,314 INFO L87 Difference]: Start difference. First operand 38 states and 62 transitions. cyclomatic complexity: 26 Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-13 00:09:21,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:09:21,533 INFO L93 Difference]: Finished difference Result 52 states and 81 transitions. [2021-10-13 00:09:21,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:09:21,533 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 81 transitions. [2021-10-13 00:09:21,537 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 44 [2021-10-13 00:09:21,543 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 52 states and 81 transitions. [2021-10-13 00:09:21,545 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 52 [2021-10-13 00:09:21,546 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 52 [2021-10-13 00:09:21,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 81 transitions. [2021-10-13 00:09:21,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 00:09:21,550 INFO L681 BuchiCegarLoop]: Abstraction has 52 states and 81 transitions. [2021-10-13 00:09:21,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states and 81 transitions. [2021-10-13 00:09:21,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 38. [2021-10-13 00:09:21,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 13 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (21), 12 states have call predecessors, (21), 13 states have call successors, (21) [2021-10-13 00:09:21,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 61 transitions. [2021-10-13 00:09:21,560 INFO L704 BuchiCegarLoop]: Abstraction has 38 states and 61 transitions. [2021-10-13 00:09:21,560 INFO L587 BuchiCegarLoop]: Abstraction has 38 states and 61 transitions. [2021-10-13 00:09:21,560 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-13 00:09:21,560 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 38 states and 61 transitions. [2021-10-13 00:09:21,562 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2021-10-13 00:09:21,562 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:09:21,562 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:09:21,565 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-13 00:09:21,565 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:09:21,566 INFO L791 eck$LassoCheckResult]: Stem: 985#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, main_#t~ret9, main_#t~ret10, main_#t~post8, main_~k~0, main_#t~post7, main_~n~0, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := main_#t~nondet4;havoc main_#t~nondet4; 986#L35 assume !(main_~x~0 < 0);main_~y~0 := main_#t~nondet5;havoc main_#t~nondet5; 995#L38 assume !(main_~y~0 < 0);main_~z~0 := main_#t~nondet6;havoc main_#t~nondet6;main_~n~0 := 0; 996#L41-3 [2021-10-13 00:09:21,566 INFO L793 eck$LassoCheckResult]: Loop: 996#L41-3 assume !!(main_~n~0 <= main_~x~0);main_~k~0 := 0; 998#L42-3 assume !!(main_~k~0 <= main_~x~0); 1003#L43 assume !(main_~k~0 <= main_~n~0);binomialCoefficient_#in~n, binomialCoefficient_#in~k := main_~k~0, main_~n~0;havoc binomialCoefficient_#res;havoc binomialCoefficient_#t~ret1, binomialCoefficient_#t~ret2, binomialCoefficient_#t~ret3, binomialCoefficient_~n, binomialCoefficient_~k;binomialCoefficient_~n := binomialCoefficient_#in~n;binomialCoefficient_~k := binomialCoefficient_#in~k; 966#L30-5 call binomialCoefficient_#t~ret1 := fact(binomialCoefficient_~n);< 967#factENTRY ~n := #in~n; 989#L25 assume ~n <= 0;#res := 1; 987#factFINAL assume true; 988#factEXIT >#73#return; 979#L30-6 call binomialCoefficient_#t~ret2 := fact(binomialCoefficient_~k);< 967#factENTRY ~n := #in~n; 989#L25 assume ~n <= 0;#res := 1; 987#factFINAL assume true; 988#factEXIT >#75#return; 969#L30-7 call binomialCoefficient_#t~ret3 := fact(binomialCoefficient_~n - binomialCoefficient_~k);< 967#factENTRY ~n := #in~n; 989#L25 assume !(~n <= 0); 978#L26 call #t~ret0 := fact(~n - 1);< 967#factENTRY ~n := #in~n; 989#L25 assume ~n <= 0;#res := 1; 987#factFINAL assume true; 988#factEXIT >#65#return; 984#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 991#factFINAL assume true; 968#factEXIT >#77#return; 981#L30-8 binomialCoefficient_#res := (if binomialCoefficient_#t~ret1 < 0 && 0 != binomialCoefficient_#t~ret1 % (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3) then (if binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3 < 0 then binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3) - 1 else 1 + binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3)) else binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3));havoc binomialCoefficient_#t~ret1;havoc binomialCoefficient_#t~ret2;havoc binomialCoefficient_#t~ret3; 993#L30-9 main_#t~ret10 := binomialCoefficient_#res;havoc main_#t~ret10; 997#L42-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 1001#L42-3 assume !(main_~k~0 <= main_~x~0); 1000#L41-2 main_#t~post7 := main_~n~0;main_~n~0 := 1 + main_#t~post7;havoc main_#t~post7; 996#L41-3 [2021-10-13 00:09:21,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:21,566 INFO L82 PathProgramCache]: Analyzing trace with hash 38893, now seen corresponding path program 6 times [2021-10-13 00:09:21,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:09:21,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115189695] [2021-10-13 00:09:21,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:21,567 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:09:21,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:09:21,575 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:09:21,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:09:21,594 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:09:21,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:21,598 INFO L82 PathProgramCache]: Analyzing trace with hash 440366743, now seen corresponding path program 2 times [2021-10-13 00:09:21,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:09:21,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298390442] [2021-10-13 00:09:21,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:21,601 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:09:21,611 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:09:21,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1433988184] [2021-10-13 00:09:21,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:09:21,623 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:09:21,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:21,629 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:09:21,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-13 00:09:21,736 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:09:21,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-10-13 00:09:21,736 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:09:21,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:09:21,763 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:09:21,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:21,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1834453461, now seen corresponding path program 1 times [2021-10-13 00:09:21,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:09:21,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221309926] [2021-10-13 00:09:21,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:21,764 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:09:21,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:09:21,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:09:21,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:09:21,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-10-13 00:09:21,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:09:21,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-10-13 00:09:21,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:09:21,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221309926] [2021-10-13 00:09:21,835 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-10-13 00:09:21,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387461722] [2021-10-13 00:09:21,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:21,835 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:09:21,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:21,844 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:09:21,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-13 00:09:21,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:09:21,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 00:09:21,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:09:22,051 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-10-13 00:09:22,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387461722] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:09:22,051 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:09:22,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:09:22,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935695340] [2021-10-13 00:09:22,494 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:09:22,494 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:09:22,494 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:09:22,495 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:09:22,495 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 00:09:22,495 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:22,495 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:09:22,495 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:09:22,495 INFO L133 ssoRankerPreferences]: Filename of dumped script: Binomial.c_Iteration6_Loop [2021-10-13 00:09:22,495 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:09:22,495 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:09:22,498 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:09:22,500 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:09:22,502 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:09:22,507 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:09:22,509 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:09:22,535 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:09:22,537 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:09:22,726 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:09:22,726 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 00:09:22,726 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:22,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:22,744 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:22,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-13 00:09:22,755 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:09:22,755 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:09:22,785 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:09:22,785 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post8=0} Honda state: {ULTIMATE.start_main_#t~post8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:09:22,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:22,823 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:22,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:22,826 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:22,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-13 00:09:22,837 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:09:22,837 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:09:22,860 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:09:22,860 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_binomialCoefficient_#t~ret2=0} Honda state: {ULTIMATE.start_binomialCoefficient_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:09:22,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:22,889 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:22,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:22,890 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:22,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-13 00:09:22,892 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:09:22,892 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:09:22,900 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:09:22,900 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_binomialCoefficient_#t~ret3=0} Honda state: {ULTIMATE.start_binomialCoefficient_#t~ret3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:09:22,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:22,923 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:22,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:22,924 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:22,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-13 00:09:22,930 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:09:22,930 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:09:22,938 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:09:22,938 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~ret10=0} Honda state: {ULTIMATE.start_main_#t~ret10=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:09:22,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:22,961 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:22,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:22,962 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:22,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-13 00:09:22,968 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:09:22,968 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:09:23,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:23,044 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:23,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:23,052 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:23,063 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 00:09:23,063 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:09:23,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-13 00:09:23,107 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 00:09:23,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:23,147 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:09:23,147 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:09:23,147 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:09:23,147 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:09:23,147 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 00:09:23,147 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:23,147 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:09:23,147 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:09:23,148 INFO L133 ssoRankerPreferences]: Filename of dumped script: Binomial.c_Iteration6_Loop [2021-10-13 00:09:23,148 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:09:23,148 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:09:23,149 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:09:23,155 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:09:23,157 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:09:23,161 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:09:23,163 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:09:23,193 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:09:23,195 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:09:23,523 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:09:23,523 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 00:09:23,523 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:23,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:23,538 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:23,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-13 00:09:23,543 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 [2021-10-13 00:09:23,550 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:09:23,550 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:23,551 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:23,551 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:23,551 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:09:23,551 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:09:23,551 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:23,565 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:23,591 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2021-10-13 00:09:23,594 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:23,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:23,595 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:23,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-13 00:09:23,597 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 00:09:23,604 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:09:23,604 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:23,604 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:23,604 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:23,604 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:09:23,605 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:09:23,605 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:23,606 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:23,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:23,626 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:23,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:23,626 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:23,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-10-13 00:09:23,628 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 [2021-10-13 00:09:23,635 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:09:23,635 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:23,635 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:23,635 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:23,635 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:09:23,635 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:09:23,636 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:23,637 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:23,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:23,656 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:23,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:23,657 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:23,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-13 00:09:23,659 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 [2021-10-13 00:09:23,666 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:09:23,666 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:23,666 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:23,666 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:23,666 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:09:23,666 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:09:23,667 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:23,668 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:23,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:23,687 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:23,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:23,688 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:23,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-10-13 00:09:23,690 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 [2021-10-13 00:09:23,697 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:09:23,697 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:23,698 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:23,698 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:23,698 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:09:23,702 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:09:23,702 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:23,714 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:23,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:23,734 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:23,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:23,735 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:23,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-13 00:09:23,737 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 [2021-10-13 00:09:23,744 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:09:23,745 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:23,745 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:23,745 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:23,745 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:09:23,745 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:09:23,746 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:23,748 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:23,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2021-10-13 00:09:23,767 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:23,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:23,768 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:23,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-13 00:09:23,769 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 [2021-10-13 00:09:23,776 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:09:23,777 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:23,777 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:23,777 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:23,777 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:09:23,777 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:09:23,777 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:23,784 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:23,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:23,804 INFO L490 LassoAnalysis]: Using template '2-nested'. [2021-10-13 00:09:23,804 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:23,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:23,805 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:23,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-10-13 00:09:23,807 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 [2021-10-13 00:09:23,814 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:09:23,814 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:23,815 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:23,815 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:23,815 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2021-10-13 00:09:23,815 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2021-10-13 00:09:23,815 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:23,818 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:23,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:23,839 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:23,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:23,840 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:23,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-13 00:09:23,843 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 [2021-10-13 00:09:23,851 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:09:23,851 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:23,851 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:23,851 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:23,851 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2021-10-13 00:09:23,852 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2021-10-13 00:09:23,852 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:23,860 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:23,880 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2021-10-13 00:09:23,880 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:23,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:23,881 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:23,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-10-13 00:09:23,885 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 [2021-10-13 00:09:23,892 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:09:23,892 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:23,893 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:23,893 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:23,893 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2021-10-13 00:09:23,894 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2021-10-13 00:09:23,894 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:23,895 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:23,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2021-10-13 00:09:23,915 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:23,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:23,916 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:23,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-10-13 00:09:23,918 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 00:09:23,926 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:09:23,926 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:23,927 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:23,927 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:23,927 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2021-10-13 00:09:23,928 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2021-10-13 00:09:23,928 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:23,932 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:23,952 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2021-10-13 00:09:23,952 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:23,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:23,953 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:23,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-10-13 00:09:23,955 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 00:09:23,963 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:09:23,963 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:23,964 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:23,964 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:23,964 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2021-10-13 00:09:23,969 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2021-10-13 00:09:23,969 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:23,976 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:23,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:23,999 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:23,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:23,999 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:24,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-10-13 00:09:24,001 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 [2021-10-13 00:09:24,008 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:09:24,008 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:24,008 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:24,008 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:24,008 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2021-10-13 00:09:24,009 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2021-10-13 00:09:24,009 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:24,010 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:24,037 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2021-10-13 00:09:24,038 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:24,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:24,038 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:24,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-10-13 00:09:24,040 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 [2021-10-13 00:09:24,047 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:09:24,047 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:24,047 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:24,047 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:24,047 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2021-10-13 00:09:24,048 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2021-10-13 00:09:24,048 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:24,072 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:24,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:24,098 INFO L490 LassoAnalysis]: Using template '3-nested'. [2021-10-13 00:09:24,098 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:24,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:24,099 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:24,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-10-13 00:09:24,100 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 [2021-10-13 00:09:24,108 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:09:24,108 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:24,108 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:24,108 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:24,108 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2021-10-13 00:09:24,109 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-13 00:09:24,109 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:24,111 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:24,130 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2021-10-13 00:09:24,131 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:24,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:24,131 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:24,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-10-13 00:09:24,134 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 [2021-10-13 00:09:24,141 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:09:24,141 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:24,141 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:24,142 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:24,142 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2021-10-13 00:09:24,143 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-13 00:09:24,143 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:24,147 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:24,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:24,167 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:24,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:24,168 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:24,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-10-13 00:09:24,172 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 [2021-10-13 00:09:24,181 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:09:24,181 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:24,181 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:24,181 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:24,181 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2021-10-13 00:09:24,183 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-13 00:09:24,183 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:24,185 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:24,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2021-10-13 00:09:24,204 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:24,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:24,205 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:24,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-10-13 00:09:24,207 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 [2021-10-13 00:09:24,215 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:09:24,215 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:24,215 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:24,215 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:24,215 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2021-10-13 00:09:24,216 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-13 00:09:24,216 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:24,219 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:24,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:24,239 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:24,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:24,240 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:24,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-10-13 00:09:24,241 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 [2021-10-13 00:09:24,249 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:09:24,249 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:24,250 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:24,250 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:24,250 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2021-10-13 00:09:24,256 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-13 00:09:24,256 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:24,275 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:24,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:24,295 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:24,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:24,295 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:24,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-10-13 00:09:24,298 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 00:09:24,306 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:09:24,306 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:24,306 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:24,306 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:24,306 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2021-10-13 00:09:24,307 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-13 00:09:24,307 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:24,308 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:24,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:24,328 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:24,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:24,329 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:24,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-10-13 00:09:24,334 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 [2021-10-13 00:09:24,343 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:09:24,344 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:24,344 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:24,344 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:24,344 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2021-10-13 00:09:24,345 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-13 00:09:24,345 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:24,363 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:24,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:24,387 INFO L490 LassoAnalysis]: Using template '4-nested'. [2021-10-13 00:09:24,388 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:24,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:24,388 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:24,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-10-13 00:09:24,392 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 [2021-10-13 00:09:24,399 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:09:24,399 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:24,399 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:24,399 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:24,400 INFO L205 nArgumentSynthesizer]: 5 template conjuncts. [2021-10-13 00:09:24,401 INFO L401 nArgumentSynthesizer]: We have 5 Motzkin's Theorem applications. [2021-10-13 00:09:24,401 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:24,423 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:24,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:24,456 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:24,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:24,464 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:24,468 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 [2021-10-13 00:09:24,478 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:09:24,478 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:24,478 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:24,478 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:24,478 INFO L205 nArgumentSynthesizer]: 5 template conjuncts. [2021-10-13 00:09:24,479 INFO L401 nArgumentSynthesizer]: We have 5 Motzkin's Theorem applications. [2021-10-13 00:09:24,479 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:24,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-10-13 00:09:24,503 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:24,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:24,535 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:24,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:24,536 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:24,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-10-13 00:09:24,537 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 [2021-10-13 00:09:24,545 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:09:24,545 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:24,545 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:24,545 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:24,545 INFO L205 nArgumentSynthesizer]: 5 template conjuncts. [2021-10-13 00:09:24,546 INFO L401 nArgumentSynthesizer]: We have 5 Motzkin's Theorem applications. [2021-10-13 00:09:24,546 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:24,570 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:24,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:24,590 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:24,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:24,591 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:24,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-10-13 00:09:24,593 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 [2021-10-13 00:09:24,600 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:09:24,600 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:24,601 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:24,601 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:24,601 INFO L205 nArgumentSynthesizer]: 5 template conjuncts. [2021-10-13 00:09:24,601 INFO L401 nArgumentSynthesizer]: We have 5 Motzkin's Theorem applications. [2021-10-13 00:09:24,601 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:24,603 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:24,623 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2021-10-13 00:09:24,623 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:24,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:24,624 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:24,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-10-13 00:09:24,626 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 [2021-10-13 00:09:24,635 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:09:24,635 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:24,635 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:24,635 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:24,636 INFO L205 nArgumentSynthesizer]: 5 template conjuncts. [2021-10-13 00:09:24,643 INFO L401 nArgumentSynthesizer]: We have 5 Motzkin's Theorem applications. [2021-10-13 00:09:24,643 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:24,671 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:24,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:24,705 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:24,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:24,706 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:24,716 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 [2021-10-13 00:09:24,726 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:09:24,726 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:24,726 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:24,726 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:24,727 INFO L205 nArgumentSynthesizer]: 5 template conjuncts. [2021-10-13 00:09:24,728 INFO L401 nArgumentSynthesizer]: We have 5 Motzkin's Theorem applications. [2021-10-13 00:09:24,728 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:24,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-10-13 00:09:24,743 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:24,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:24,778 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:24,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:24,779 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:24,781 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 [2021-10-13 00:09:24,791 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:09:24,791 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:24,791 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:24,792 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:24,792 INFO L205 nArgumentSynthesizer]: 5 template conjuncts. [2021-10-13 00:09:24,793 INFO L401 nArgumentSynthesizer]: We have 5 Motzkin's Theorem applications. [2021-10-13 00:09:24,793 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:24,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-10-13 00:09:24,807 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:24,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:24,845 INFO L490 LassoAnalysis]: Using template '2-phase'. [2021-10-13 00:09:24,846 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:24,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:24,847 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:24,852 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 [2021-10-13 00:09:24,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-10-13 00:09:24,861 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2021-10-13 00:09:24,861 INFO L338 nArgumentSynthesizer]: Template has degree 1. [2021-10-13 00:09:24,861 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:24,861 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:24,861 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:24,861 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2021-10-13 00:09:24,862 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2021-10-13 00:09:24,863 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:24,872 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:24,892 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2021-10-13 00:09:24,893 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:24,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:24,893 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:24,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-10-13 00:09:24,895 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 [2021-10-13 00:09:24,902 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2021-10-13 00:09:24,903 INFO L338 nArgumentSynthesizer]: Template has degree 1. [2021-10-13 00:09:24,903 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:24,903 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:24,903 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:24,903 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2021-10-13 00:09:24,904 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2021-10-13 00:09:24,904 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:24,906 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:24,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Ended with exit code 0 [2021-10-13 00:09:24,929 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:24,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:24,930 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:24,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-10-13 00:09:24,931 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 [2021-10-13 00:09:24,938 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2021-10-13 00:09:24,938 INFO L338 nArgumentSynthesizer]: Template has degree 1. [2021-10-13 00:09:24,938 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:24,938 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:24,938 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:24,938 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2021-10-13 00:09:24,939 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2021-10-13 00:09:24,939 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:24,945 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:24,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:24,964 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:24,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:24,965 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:24,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-10-13 00:09:24,967 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 [2021-10-13 00:09:24,974 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2021-10-13 00:09:24,974 INFO L338 nArgumentSynthesizer]: Template has degree 1. [2021-10-13 00:09:24,974 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:24,974 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:24,974 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:24,974 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2021-10-13 00:09:24,975 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2021-10-13 00:09:24,975 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:24,977 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:24,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Ended with exit code 0 [2021-10-13 00:09:24,997 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:24,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:24,997 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:24,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-10-13 00:09:24,999 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 00:09:25,007 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2021-10-13 00:09:25,007 INFO L338 nArgumentSynthesizer]: Template has degree 1. [2021-10-13 00:09:25,007 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:25,007 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:25,007 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:25,007 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2021-10-13 00:09:25,013 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2021-10-13 00:09:25,013 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:25,051 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:25,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:25,084 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:25,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:25,085 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:25,087 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 [2021-10-13 00:09:25,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-10-13 00:09:25,095 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2021-10-13 00:09:25,096 INFO L338 nArgumentSynthesizer]: Template has degree 1. [2021-10-13 00:09:25,096 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:25,096 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:25,096 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:25,096 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2021-10-13 00:09:25,097 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2021-10-13 00:09:25,097 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:25,099 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:25,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:25,121 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:25,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:25,123 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:25,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2021-10-13 00:09:25,126 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 [2021-10-13 00:09:25,134 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2021-10-13 00:09:25,134 INFO L338 nArgumentSynthesizer]: Template has degree 1. [2021-10-13 00:09:25,134 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:25,135 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:25,135 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:25,135 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2021-10-13 00:09:25,136 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2021-10-13 00:09:25,136 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:25,159 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:25,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:25,196 INFO L490 LassoAnalysis]: Using template '3-phase'. [2021-10-13 00:09:25,196 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:25,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:25,200 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:25,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-10-13 00:09:25,204 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 [2021-10-13 00:09:25,213 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2021-10-13 00:09:25,213 INFO L338 nArgumentSynthesizer]: Template has degree 2. [2021-10-13 00:09:25,213 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:25,214 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:25,214 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:25,214 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2021-10-13 00:09:25,246 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-13 00:09:25,247 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:25,268 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:25,301 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Ended with exit code 0 [2021-10-13 00:09:25,301 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:25,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:25,302 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:25,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-10-13 00:09:25,303 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 [2021-10-13 00:09:25,313 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2021-10-13 00:09:25,314 INFO L338 nArgumentSynthesizer]: Template has degree 2. [2021-10-13 00:09:25,314 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:25,314 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:25,314 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:25,314 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2021-10-13 00:09:25,316 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-13 00:09:25,316 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:25,328 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:25,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:25,363 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:25,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:25,364 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:25,366 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 [2021-10-13 00:09:25,376 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2021-10-13 00:09:25,376 INFO L338 nArgumentSynthesizer]: Template has degree 2. [2021-10-13 00:09:25,376 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:25,376 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:25,376 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:25,376 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2021-10-13 00:09:25,378 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-13 00:09:25,378 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:25,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2021-10-13 00:09:25,395 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:25,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:25,432 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:25,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:25,433 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:25,436 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 [2021-10-13 00:09:25,447 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2021-10-13 00:09:25,447 INFO L338 nArgumentSynthesizer]: Template has degree 2. [2021-10-13 00:09:25,447 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:25,447 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:25,447 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:25,447 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2021-10-13 00:09:25,449 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-13 00:09:25,449 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:25,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2021-10-13 00:09:25,463 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:25,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:25,499 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:25,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:25,504 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:25,506 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 [2021-10-13 00:09:25,517 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2021-10-13 00:09:25,517 INFO L338 nArgumentSynthesizer]: Template has degree 2. [2021-10-13 00:09:25,518 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:25,518 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:25,518 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:25,518 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2021-10-13 00:09:25,527 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-13 00:09:25,527 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:25,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2021-10-13 00:09:25,551 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:25,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:25,585 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:25,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:25,587 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:25,588 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 [2021-10-13 00:09:25,599 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2021-10-13 00:09:25,599 INFO L338 nArgumentSynthesizer]: Template has degree 2. [2021-10-13 00:09:25,599 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:25,599 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:25,599 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:25,599 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2021-10-13 00:09:25,601 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-13 00:09:25,601 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:25,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2021-10-13 00:09:25,619 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:25,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:25,656 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:25,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:25,657 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:25,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2021-10-13 00:09:25,660 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 [2021-10-13 00:09:25,670 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2021-10-13 00:09:25,670 INFO L338 nArgumentSynthesizer]: Template has degree 2. [2021-10-13 00:09:25,670 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:25,671 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:25,671 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:25,671 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2021-10-13 00:09:25,672 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-13 00:09:25,672 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:25,691 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:25,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:25,725 INFO L490 LassoAnalysis]: Using template '4-phase'. [2021-10-13 00:09:25,725 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:25,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:25,728 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:25,730 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 [2021-10-13 00:09:25,740 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2021-10-13 00:09:25,741 INFO L338 nArgumentSynthesizer]: Template has degree 3. [2021-10-13 00:09:25,741 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:25,741 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:25,741 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:25,741 INFO L205 nArgumentSynthesizer]: 5 template conjuncts. [2021-10-13 00:09:25,743 INFO L401 nArgumentSynthesizer]: We have 5 Motzkin's Theorem applications. [2021-10-13 00:09:25,744 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:25,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2021-10-13 00:09:25,767 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:25,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:25,804 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:25,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:25,805 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:25,808 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 [2021-10-13 00:09:25,819 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2021-10-13 00:09:25,819 INFO L338 nArgumentSynthesizer]: Template has degree 3. [2021-10-13 00:09:25,819 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:25,819 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:25,819 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:25,819 INFO L205 nArgumentSynthesizer]: 5 template conjuncts. [2021-10-13 00:09:25,822 INFO L401 nArgumentSynthesizer]: We have 5 Motzkin's Theorem applications. [2021-10-13 00:09:25,822 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:25,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2021-10-13 00:09:25,843 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:25,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:25,877 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:25,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:25,878 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:25,881 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 [2021-10-13 00:09:25,892 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2021-10-13 00:09:25,892 INFO L338 nArgumentSynthesizer]: Template has degree 3. [2021-10-13 00:09:25,892 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:25,892 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:25,892 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:25,892 INFO L205 nArgumentSynthesizer]: 5 template conjuncts. [2021-10-13 00:09:25,894 INFO L401 nArgumentSynthesizer]: We have 5 Motzkin's Theorem applications. [2021-10-13 00:09:25,894 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:25,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2021-10-13 00:09:25,911 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:25,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:25,950 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:25,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:25,951 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:25,955 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 00:09:25,965 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2021-10-13 00:09:25,965 INFO L338 nArgumentSynthesizer]: Template has degree 3. [2021-10-13 00:09:25,965 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:25,965 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:25,966 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:25,966 INFO L205 nArgumentSynthesizer]: 5 template conjuncts. [2021-10-13 00:09:25,967 INFO L401 nArgumentSynthesizer]: We have 5 Motzkin's Theorem applications. [2021-10-13 00:09:25,968 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:25,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2021-10-13 00:09:25,988 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:26,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:26,022 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:26,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:26,023 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:26,025 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 [2021-10-13 00:09:26,039 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2021-10-13 00:09:26,039 INFO L338 nArgumentSynthesizer]: Template has degree 3. [2021-10-13 00:09:26,039 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:26,039 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:26,039 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:26,040 INFO L205 nArgumentSynthesizer]: 5 template conjuncts. [2021-10-13 00:09:26,053 INFO L401 nArgumentSynthesizer]: We have 5 Motzkin's Theorem applications. [2021-10-13 00:09:26,053 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:26,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2021-10-13 00:09:26,095 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:26,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:26,132 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:26,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:26,133 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:26,138 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 [2021-10-13 00:09:26,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2021-10-13 00:09:26,149 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2021-10-13 00:09:26,149 INFO L338 nArgumentSynthesizer]: Template has degree 3. [2021-10-13 00:09:26,149 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:26,149 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:26,149 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:26,149 INFO L205 nArgumentSynthesizer]: 5 template conjuncts. [2021-10-13 00:09:26,152 INFO L401 nArgumentSynthesizer]: We have 5 Motzkin's Theorem applications. [2021-10-13 00:09:26,152 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:26,166 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:26,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:26,200 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:26,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:26,201 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:26,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2021-10-13 00:09:26,203 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 [2021-10-13 00:09:26,211 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2021-10-13 00:09:26,211 INFO L338 nArgumentSynthesizer]: Template has degree 3. [2021-10-13 00:09:26,211 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:26,211 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:26,211 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:26,211 INFO L205 nArgumentSynthesizer]: 5 template conjuncts. [2021-10-13 00:09:26,213 INFO L401 nArgumentSynthesizer]: We have 5 Motzkin's Theorem applications. [2021-10-13 00:09:26,214 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:26,228 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:26,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:26,264 INFO L490 LassoAnalysis]: Using template '2-lex'. [2021-10-13 00:09:26,265 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:26,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:26,266 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:26,272 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 [2021-10-13 00:09:26,282 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2021-10-13 00:09:26,283 INFO L338 nArgumentSynthesizer]: Template has degree 1. [2021-10-13 00:09:26,283 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:26,283 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:26,283 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:26,283 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2021-10-13 00:09:26,284 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-13 00:09:26,284 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:26,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2021-10-13 00:09:26,299 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:26,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:26,336 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:26,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:26,337 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:26,339 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 [2021-10-13 00:09:26,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Waiting until timeout for monitored process [2021-10-13 00:09:26,347 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2021-10-13 00:09:26,347 INFO L338 nArgumentSynthesizer]: Template has degree 1. [2021-10-13 00:09:26,348 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:26,348 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:26,348 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:26,348 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2021-10-13 00:09:26,348 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-13 00:09:26,348 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:26,362 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:26,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:26,396 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:26,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:26,396 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:26,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Waiting until timeout for monitored process [2021-10-13 00:09:26,398 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 [2021-10-13 00:09:26,406 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2021-10-13 00:09:26,406 INFO L338 nArgumentSynthesizer]: Template has degree 1. [2021-10-13 00:09:26,406 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:26,407 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:26,407 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:26,407 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2021-10-13 00:09:26,407 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-13 00:09:26,407 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:26,409 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:26,430 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Ended with exit code 0 [2021-10-13 00:09:26,430 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:26,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:26,431 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:26,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Waiting until timeout for monitored process [2021-10-13 00:09:26,433 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 [2021-10-13 00:09:26,441 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2021-10-13 00:09:26,441 INFO L338 nArgumentSynthesizer]: Template has degree 1. [2021-10-13 00:09:26,441 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:26,441 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:26,441 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:26,441 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2021-10-13 00:09:26,442 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-13 00:09:26,442 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:26,467 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:26,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:26,497 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:26,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:26,498 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:26,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Waiting until timeout for monitored process [2021-10-13 00:09:26,499 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 [2021-10-13 00:09:26,507 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2021-10-13 00:09:26,507 INFO L338 nArgumentSynthesizer]: Template has degree 1. [2021-10-13 00:09:26,507 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:26,507 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:26,507 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:26,507 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2021-10-13 00:09:26,512 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-13 00:09:26,512 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:26,520 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:26,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:26,540 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:26,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:26,541 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:26,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Waiting until timeout for monitored process [2021-10-13 00:09:26,542 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 [2021-10-13 00:09:26,549 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2021-10-13 00:09:26,549 INFO L338 nArgumentSynthesizer]: Template has degree 1. [2021-10-13 00:09:26,550 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:26,550 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:26,550 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:26,550 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2021-10-13 00:09:26,550 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-13 00:09:26,550 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:26,552 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:26,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Ended with exit code 0 [2021-10-13 00:09:26,572 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:26,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:26,572 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:26,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Waiting until timeout for monitored process [2021-10-13 00:09:26,573 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 [2021-10-13 00:09:26,581 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2021-10-13 00:09:26,581 INFO L338 nArgumentSynthesizer]: Template has degree 1. [2021-10-13 00:09:26,581 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:26,581 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:26,581 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:26,581 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2021-10-13 00:09:26,582 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-13 00:09:26,582 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:26,584 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:26,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:26,604 INFO L490 LassoAnalysis]: Using template '3-lex'. [2021-10-13 00:09:26,604 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:26,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:26,604 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:26,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Waiting until timeout for monitored process [2021-10-13 00:09:26,605 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 [2021-10-13 00:09:26,613 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2021-10-13 00:09:26,613 INFO L338 nArgumentSynthesizer]: Template has degree 3. [2021-10-13 00:09:26,613 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:26,613 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:26,614 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:26,614 INFO L205 nArgumentSynthesizer]: 6 template conjuncts. [2021-10-13 00:09:26,614 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 00:09:26,615 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:26,617 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:26,637 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Ended with exit code 0 [2021-10-13 00:09:26,637 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:26,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:26,638 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:26,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Waiting until timeout for monitored process [2021-10-13 00:09:26,639 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 [2021-10-13 00:09:26,647 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2021-10-13 00:09:26,647 INFO L338 nArgumentSynthesizer]: Template has degree 3. [2021-10-13 00:09:26,647 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:26,647 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:26,648 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:26,648 INFO L205 nArgumentSynthesizer]: 6 template conjuncts. [2021-10-13 00:09:26,649 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 00:09:26,649 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:26,654 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:26,674 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Ended with exit code 0 [2021-10-13 00:09:26,674 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:26,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:26,675 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:26,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Waiting until timeout for monitored process [2021-10-13 00:09:26,676 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 [2021-10-13 00:09:26,684 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2021-10-13 00:09:26,684 INFO L338 nArgumentSynthesizer]: Template has degree 3. [2021-10-13 00:09:26,684 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:26,684 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:26,684 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:26,684 INFO L205 nArgumentSynthesizer]: 6 template conjuncts. [2021-10-13 00:09:26,685 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 00:09:26,685 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:26,699 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:26,718 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Ended with exit code 0 [2021-10-13 00:09:26,719 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:26,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:26,719 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:26,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Waiting until timeout for monitored process [2021-10-13 00:09:26,721 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 [2021-10-13 00:09:26,728 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2021-10-13 00:09:26,728 INFO L338 nArgumentSynthesizer]: Template has degree 3. [2021-10-13 00:09:26,728 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:26,728 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:26,729 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:26,729 INFO L205 nArgumentSynthesizer]: 6 template conjuncts. [2021-10-13 00:09:26,730 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 00:09:26,730 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:26,732 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:26,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Ended with exit code 0 [2021-10-13 00:09:26,753 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:26,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:26,754 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:26,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Waiting until timeout for monitored process [2021-10-13 00:09:26,755 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 [2021-10-13 00:09:26,763 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2021-10-13 00:09:26,763 INFO L338 nArgumentSynthesizer]: Template has degree 3. [2021-10-13 00:09:26,764 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:26,764 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:26,764 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:26,764 INFO L205 nArgumentSynthesizer]: 6 template conjuncts. [2021-10-13 00:09:26,773 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 00:09:26,774 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:26,799 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:26,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:26,832 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:26,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:26,844 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:26,846 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 [2021-10-13 00:09:26,855 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2021-10-13 00:09:26,856 INFO L338 nArgumentSynthesizer]: Template has degree 3. [2021-10-13 00:09:26,856 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:26,856 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:26,856 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:26,856 INFO L205 nArgumentSynthesizer]: 6 template conjuncts. [2021-10-13 00:09:26,857 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 00:09:26,857 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:26,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Waiting until timeout for monitored process [2021-10-13 00:09:26,875 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:26,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:26,909 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:26,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:26,910 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:26,912 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 [2021-10-13 00:09:26,922 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2021-10-13 00:09:26,922 INFO L338 nArgumentSynthesizer]: Template has degree 3. [2021-10-13 00:09:26,922 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:26,922 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:26,922 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:26,923 INFO L205 nArgumentSynthesizer]: 6 template conjuncts. [2021-10-13 00:09:26,924 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 00:09:26,924 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:26,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Waiting until timeout for monitored process [2021-10-13 00:09:26,947 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:09:26,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:26,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:09:26,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:09:26,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:09:26,983 INFO L87 Difference]: Start difference. First operand 38 states and 61 transitions. cyclomatic complexity: 25 Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-13 00:09:27,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:09:27,037 INFO L93 Difference]: Finished difference Result 40 states and 62 transitions. [2021-10-13 00:09:27,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:09:27,038 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 62 transitions. [2021-10-13 00:09:27,040 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 32 [2021-10-13 00:09:27,042 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 40 states and 62 transitions. [2021-10-13 00:09:27,042 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 40 [2021-10-13 00:09:27,042 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2021-10-13 00:09:27,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 62 transitions. [2021-10-13 00:09:27,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 00:09:27,043 INFO L681 BuchiCegarLoop]: Abstraction has 40 states and 62 transitions. [2021-10-13 00:09:27,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states and 62 transitions. [2021-10-13 00:09:27,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2021-10-13 00:09:27,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 11 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (19), 11 states have call predecessors, (19), 11 states have call successors, (19) [2021-10-13 00:09:27,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2021-10-13 00:09:27,049 INFO L704 BuchiCegarLoop]: Abstraction has 36 states and 56 transitions. [2021-10-13 00:09:27,049 INFO L587 BuchiCegarLoop]: Abstraction has 36 states and 56 transitions. [2021-10-13 00:09:27,050 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-13 00:09:27,050 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 56 transitions. [2021-10-13 00:09:27,051 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 28 [2021-10-13 00:09:27,051 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:09:27,051 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:09:27,052 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-13 00:09:27,052 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:09:27,052 INFO L791 eck$LassoCheckResult]: Stem: 1181#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, main_#t~ret9, main_#t~ret10, main_#t~post8, main_~k~0, main_#t~post7, main_~n~0, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := main_#t~nondet4;havoc main_#t~nondet4; 1182#L35 assume !(main_~x~0 < 0);main_~y~0 := main_#t~nondet5;havoc main_#t~nondet5; 1193#L38 assume !(main_~y~0 < 0);main_~z~0 := main_#t~nondet6;havoc main_#t~nondet6;main_~n~0 := 0; 1194#L41-3 [2021-10-13 00:09:27,052 INFO L793 eck$LassoCheckResult]: Loop: 1194#L41-3 assume !!(main_~n~0 <= main_~x~0);main_~k~0 := 0; 1187#L42-3 assume !!(main_~k~0 <= main_~x~0); 1185#L43 assume main_~k~0 <= main_~n~0;binomialCoefficient_#in~n, binomialCoefficient_#in~k := main_~n~0, main_~k~0;havoc binomialCoefficient_#res;havoc binomialCoefficient_#t~ret1, binomialCoefficient_#t~ret2, binomialCoefficient_#t~ret3, binomialCoefficient_~n, binomialCoefficient_~k;binomialCoefficient_~n := binomialCoefficient_#in~n;binomialCoefficient_~k := binomialCoefficient_#in~k; 1175#L30 call binomialCoefficient_#t~ret1 := fact(binomialCoefficient_~n);< 1166#factENTRY ~n := #in~n; 1184#L25 assume ~n <= 0;#res := 1; 1183#factFINAL assume true; 1168#factEXIT >#67#return; 1169#L30-1 call binomialCoefficient_#t~ret2 := fact(binomialCoefficient_~k);< 1166#factENTRY ~n := #in~n; 1184#L25 assume ~n <= 0;#res := 1; 1183#factFINAL assume true; 1168#factEXIT >#69#return; 1167#L30-2 call binomialCoefficient_#t~ret3 := fact(binomialCoefficient_~n - binomialCoefficient_~k);< 1166#factENTRY ~n := #in~n; 1184#L25 assume ~n <= 0;#res := 1; 1183#factFINAL assume true; 1168#factEXIT >#71#return; 1178#L30-3 binomialCoefficient_#res := (if binomialCoefficient_#t~ret1 < 0 && 0 != binomialCoefficient_#t~ret1 % (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3) then (if binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3 < 0 then binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3) - 1 else 1 + binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3)) else binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3));havoc binomialCoefficient_#t~ret1;havoc binomialCoefficient_#t~ret2;havoc binomialCoefficient_#t~ret3; 1195#L30-4 main_#t~ret9 := binomialCoefficient_#res;havoc main_#t~ret9; 1192#L42-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 1198#L42-3 assume !(main_~k~0 <= main_~x~0); 1196#L41-2 main_#t~post7 := main_~n~0;main_~n~0 := 1 + main_#t~post7;havoc main_#t~post7; 1194#L41-3 [2021-10-13 00:09:27,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:27,053 INFO L82 PathProgramCache]: Analyzing trace with hash 38893, now seen corresponding path program 7 times [2021-10-13 00:09:27,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:09:27,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801524255] [2021-10-13 00:09:27,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:27,054 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:09:27,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:09:27,059 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:09:27,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:09:27,063 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:09:27,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:27,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1214025381, now seen corresponding path program 1 times [2021-10-13 00:09:27,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:09:27,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858279650] [2021-10-13 00:09:27,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:27,064 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:09:27,073 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:09:27,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [517467383] [2021-10-13 00:09:27,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:27,073 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:09:27,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:27,074 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:09:27,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2021-10-13 00:09:27,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:09:27,186 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:09:27,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:09:27,201 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:09:27,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:27,201 INFO L82 PathProgramCache]: Analyzing trace with hash -2062430919, now seen corresponding path program 1 times [2021-10-13 00:09:27,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:09:27,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871699893] [2021-10-13 00:09:27,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:27,202 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:09:27,231 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:09:27,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [827564548] [2021-10-13 00:09:27,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:27,232 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:09:27,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:27,237 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:09:27,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2021-10-13 00:09:27,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:09:27,335 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:09:27,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:09:27,360 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:09:27,672 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:09:27,672 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:09:27,672 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:09:27,672 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:09:27,673 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 00:09:27,673 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:27,673 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:09:27,673 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:09:27,673 INFO L133 ssoRankerPreferences]: Filename of dumped script: Binomial.c_Iteration7_Loop [2021-10-13 00:09:27,673 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:09:27,673 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:09:27,676 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:09:27,679 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:09:27,682 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:09:27,684 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:09:27,686 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:09:27,689 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:09:27,691 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:09:27,711 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:09:27,811 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:09:27,811 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 00:09:27,811 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:27,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:27,815 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:27,825 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:09:27,825 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:09:27,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (85)] Waiting until timeout for monitored process [2021-10-13 00:09:27,852 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:09:27,852 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_binomialCoefficient_#t~ret2=0} Honda state: {ULTIMATE.start_binomialCoefficient_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:09:27,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (85)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:27,888 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:27,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:27,889 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:27,893 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:09:27,894 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:09:27,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (86)] Waiting until timeout for monitored process [2021-10-13 00:09:27,916 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:09:27,916 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_binomialCoefficient_#t~ret3=0} Honda state: {ULTIMATE.start_binomialCoefficient_#t~ret3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:09:27,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (86)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:27,952 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:27,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:27,953 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:27,956 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:09:27,956 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:09:27,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Waiting until timeout for monitored process [2021-10-13 00:09:27,976 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:09:27,976 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_binomialCoefficient_#res=1} Honda state: {ULTIMATE.start_binomialCoefficient_#res=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:09:28,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:28,013 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:28,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:28,014 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:28,016 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:09:28,017 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:09:28,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Waiting until timeout for monitored process [2021-10-13 00:09:28,039 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:09:28,039 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post7=0} Honda state: {ULTIMATE.start_main_#t~post7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:09:28,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:28,075 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:28,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:28,076 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:28,077 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:09:28,078 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:09:28,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (89)] Waiting until timeout for monitored process [2021-10-13 00:09:28,101 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:09:28,101 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_binomialCoefficient_#t~ret1=0} Honda state: {ULTIMATE.start_binomialCoefficient_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:09:28,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (89)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:28,133 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:28,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:28,135 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:28,136 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:09:28,136 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:09:28,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (90)] Waiting until timeout for monitored process [2021-10-13 00:09:28,156 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:09:28,156 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~ret9=0} Honda state: {ULTIMATE.start_main_#t~ret9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:09:28,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (90)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:28,190 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:28,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:28,191 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:28,193 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:09:28,193 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:09:28,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (91)] Waiting until timeout for monitored process [2021-10-13 00:09:28,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (91)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:28,244 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:28,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:28,246 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:28,248 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 00:09:28,248 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:09:28,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (92)] Waiting until timeout for monitored process [2021-10-13 00:09:29,626 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 00:09:29,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (92)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:29,631 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:09:29,631 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:09:29,631 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:09:29,631 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:09:29,631 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 00:09:29,631 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:29,631 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:09:29,632 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:09:29,632 INFO L133 ssoRankerPreferences]: Filename of dumped script: Binomial.c_Iteration7_Loop [2021-10-13 00:09:29,632 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:09:29,632 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:09:29,633 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:09:29,656 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:09:29,658 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:09:29,660 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:09:29,662 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:09:29,664 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:09:29,666 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:09:29,668 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:09:29,766 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:09:29,766 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 00:09:29,766 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:29,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:29,767 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:29,776 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 [2021-10-13 00:09:29,785 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:09:29,785 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:09:29,786 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:09:29,786 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:09:29,786 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:09:29,788 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:09:29,788 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:09:29,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (93)] Waiting until timeout for monitored process [2021-10-13 00:09:29,807 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 00:09:29,812 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-13 00:09:29,812 INFO L444 ModelExtractionUtils]: 6 out of 9 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-13 00:09:29,812 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:09:29,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:29,814 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:29,815 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 00:09:29,815 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 00:09:29,815 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 00:09:29,815 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0) = -2*ULTIMATE.start_main_~n~0 + 1 Supporting invariants [] [2021-10-13 00:09:29,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (94)] Waiting until timeout for monitored process [2021-10-13 00:09:29,844 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (93)] Ended with exit code 0 [2021-10-13 00:09:29,845 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 00:09:29,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:29,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:09:29,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:09:29,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:09:29,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:09:29,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 00:09:29,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:09:30,111 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 00:09:30,112 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 6 loop predicates [2021-10-13 00:09:30,112 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 56 transitions. cyclomatic complexity: 22 Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-13 00:09:30,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (94)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:30,422 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 56 transitions. cyclomatic complexity: 22. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Result 132 states and 203 transitions. Complement of second has 26 states. [2021-10-13 00:09:30,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 1 stem states 6 non-accepting loop states 1 accepting loop states [2021-10-13 00:09:30,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-13 00:09:30,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 70 transitions. [2021-10-13 00:09:30,424 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 70 transitions. Stem has 3 letters. Loop has 23 letters. [2021-10-13 00:09:30,426 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:09:30,426 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 70 transitions. Stem has 26 letters. Loop has 23 letters. [2021-10-13 00:09:30,427 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:09:30,427 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 70 transitions. Stem has 3 letters. Loop has 46 letters. [2021-10-13 00:09:30,428 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:09:30,428 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 132 states and 203 transitions. [2021-10-13 00:09:30,432 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 40 [2021-10-13 00:09:30,437 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 132 states to 131 states and 202 transitions. [2021-10-13 00:09:30,437 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 66 [2021-10-13 00:09:30,437 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 67 [2021-10-13 00:09:30,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 131 states and 202 transitions. [2021-10-13 00:09:30,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 00:09:30,438 INFO L681 BuchiCegarLoop]: Abstraction has 131 states and 202 transitions. [2021-10-13 00:09:30,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states and 202 transitions. [2021-10-13 00:09:30,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 126. [2021-10-13 00:09:30,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 78 states have (on average 1.1923076923076923) internal successors, (93), 81 states have internal predecessors, (93), 38 states have call successors, (38), 6 states have call predecessors, (38), 10 states have return successors, (62), 38 states have call predecessors, (62), 38 states have call successors, (62) [2021-10-13 00:09:30,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 193 transitions. [2021-10-13 00:09:30,455 INFO L704 BuchiCegarLoop]: Abstraction has 126 states and 193 transitions. [2021-10-13 00:09:30,455 INFO L587 BuchiCegarLoop]: Abstraction has 126 states and 193 transitions. [2021-10-13 00:09:30,455 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-13 00:09:30,456 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 126 states and 193 transitions. [2021-10-13 00:09:30,458 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 40 [2021-10-13 00:09:30,458 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:09:30,458 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:09:30,460 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-13 00:09:30,460 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [11, 11, 6, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2021-10-13 00:09:30,461 INFO L791 eck$LassoCheckResult]: Stem: 1485#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, main_#t~ret9, main_#t~ret10, main_#t~post8, main_~k~0, main_#t~post7, main_~n~0, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := main_#t~nondet4;havoc main_#t~nondet4; 1486#L35 assume !(main_~x~0 < 0);main_~y~0 := main_#t~nondet5;havoc main_#t~nondet5; 1512#L38 assume !(main_~y~0 < 0);main_~z~0 := main_#t~nondet6;havoc main_#t~nondet6;main_~n~0 := 0; 1513#L41-3 assume !!(main_~n~0 <= main_~x~0);main_~k~0 := 0; 1497#L42-3 [2021-10-13 00:09:30,461 INFO L793 eck$LassoCheckResult]: Loop: 1497#L42-3 assume !!(main_~k~0 <= main_~x~0); 1495#L43 assume main_~k~0 <= main_~n~0;binomialCoefficient_#in~n, binomialCoefficient_#in~k := main_~n~0, main_~k~0;havoc binomialCoefficient_#res;havoc binomialCoefficient_#t~ret1, binomialCoefficient_#t~ret2, binomialCoefficient_#t~ret3, binomialCoefficient_~n, binomialCoefficient_~k;binomialCoefficient_~n := binomialCoefficient_#in~n;binomialCoefficient_~k := binomialCoefficient_#in~k; 1487#L30 call binomialCoefficient_#t~ret1 := fact(binomialCoefficient_~n);< 1465#factENTRY ~n := #in~n; 1556#L25 assume !(~n <= 0); 1470#L26 call #t~ret0 := fact(~n - 1);< 1491#factENTRY ~n := #in~n; 1492#L25 assume ~n <= 0;#res := 1; 1489#factFINAL assume true; 1468#factEXIT >#65#return; 1472#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 1557#factFINAL assume true; 1541#factEXIT >#67#return; 1543#L30-1 call binomialCoefficient_#t~ret2 := fact(binomialCoefficient_~k);< 1465#factENTRY ~n := #in~n; 1556#L25 assume ~n <= 0;#res := 1; 1550#factFINAL assume true; 1548#factEXIT >#69#return; 1482#L30-2 call binomialCoefficient_#t~ret3 := fact(binomialCoefficient_~n - binomialCoefficient_~k);< 1465#factENTRY ~n := #in~n; 1556#L25 assume !(~n <= 0); 1470#L26 call #t~ret0 := fact(~n - 1);< 1491#factENTRY ~n := #in~n; 1492#L25 assume ~n <= 0;#res := 1; 1489#factFINAL assume true; 1468#factEXIT >#65#return; 1472#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 1557#factFINAL assume true; 1541#factEXIT >#71#return; 1546#L30-3 binomialCoefficient_#res := (if binomialCoefficient_#t~ret1 < 0 && 0 != binomialCoefficient_#t~ret1 % (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3) then (if binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3 < 0 then binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3) - 1 else 1 + binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3)) else binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3));havoc binomialCoefficient_#t~ret1;havoc binomialCoefficient_#t~ret2;havoc binomialCoefficient_#t~ret3; 1555#L30-4 main_#t~ret9 := binomialCoefficient_#res;havoc main_#t~ret9; 1554#L42-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 1553#L42-3 assume !!(main_~k~0 <= main_~x~0); 1529#L43 assume main_~k~0 <= main_~n~0;binomialCoefficient_#in~n, binomialCoefficient_#in~k := main_~n~0, main_~k~0;havoc binomialCoefficient_#res;havoc binomialCoefficient_#t~ret1, binomialCoefficient_#t~ret2, binomialCoefficient_#t~ret3, binomialCoefficient_~n, binomialCoefficient_~k;binomialCoefficient_~n := binomialCoefficient_#in~n;binomialCoefficient_~k := binomialCoefficient_#in~k; 1544#L30 call binomialCoefficient_#t~ret1 := fact(binomialCoefficient_~n);< 1465#factENTRY ~n := #in~n; 1556#L25 assume !(~n <= 0); 1470#L26 call #t~ret0 := fact(~n - 1);< 1491#factENTRY ~n := #in~n; 1492#L25 assume ~n <= 0;#res := 1; 1489#factFINAL assume true; 1468#factEXIT >#65#return; 1472#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 1557#factFINAL assume true; 1541#factEXIT >#67#return; 1545#L30-1 call binomialCoefficient_#t~ret2 := fact(binomialCoefficient_~k);< 1465#factENTRY ~n := #in~n; 1556#L25 assume !(~n <= 0); 1470#L26 call #t~ret0 := fact(~n - 1);< 1491#factENTRY ~n := #in~n; 1492#L25 assume ~n <= 0;#res := 1; 1489#factFINAL assume true; 1468#factEXIT >#65#return; 1472#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 1557#factFINAL assume true; 1541#factEXIT >#69#return; 1542#L30-2 call binomialCoefficient_#t~ret3 := fact(binomialCoefficient_~n - binomialCoefficient_~k);< 1465#factENTRY ~n := #in~n; 1556#L25 assume !(~n <= 0); 1470#L26 call #t~ret0 := fact(~n - 1);< 1491#factENTRY ~n := #in~n; 1492#L25 assume ~n <= 0;#res := 1; 1489#factFINAL assume true; 1468#factEXIT >#65#return; 1472#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 1557#factFINAL assume true; 1541#factEXIT >#71#return; 1533#L30-3 binomialCoefficient_#res := (if binomialCoefficient_#t~ret1 < 0 && 0 != binomialCoefficient_#t~ret1 % (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3) then (if binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3 < 0 then binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3) - 1 else 1 + binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3)) else binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3));havoc binomialCoefficient_#t~ret1;havoc binomialCoefficient_#t~ret2;havoc binomialCoefficient_#t~ret3; 1531#L30-4 main_#t~ret9 := binomialCoefficient_#res;havoc main_#t~ret9; 1530#L42-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 1528#L42-3 assume !(main_~k~0 <= main_~x~0); 1526#L41-2 main_#t~post7 := main_~n~0;main_~n~0 := 1 + main_#t~post7;havoc main_#t~post7; 1517#L41-3 assume !!(main_~n~0 <= main_~x~0);main_~k~0 := 0; 1497#L42-3 [2021-10-13 00:09:30,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:30,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1205710, now seen corresponding path program 1 times [2021-10-13 00:09:30,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:09:30,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663767143] [2021-10-13 00:09:30,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:30,463 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:09:30,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:09:30,469 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:09:30,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:09:30,474 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:09:30,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:30,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1979006875, now seen corresponding path program 3 times [2021-10-13 00:09:30,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:09:30,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166384080] [2021-10-13 00:09:30,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:30,475 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:09:30,484 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:09:30,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [200662176] [2021-10-13 00:09:30,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:09:30,484 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:09:30,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:30,486 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:09:30,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2021-10-13 00:09:30,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 00:09:30,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:09:30,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 00:09:30,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:09:30,793 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2021-10-13 00:09:30,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:09:30,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166384080] [2021-10-13 00:09:30,793 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:09:30,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200662176] [2021-10-13 00:09:30,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200662176] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:09:30,794 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:09:30,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 00:09:30,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214941629] [2021-10-13 00:09:30,795 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 00:09:30,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:09:30,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:09:30,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:09:30,796 INFO L87 Difference]: Start difference. First operand 126 states and 193 transitions. cyclomatic complexity: 72 Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-13 00:09:30,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:09:30,871 INFO L93 Difference]: Finished difference Result 168 states and 259 transitions. [2021-10-13 00:09:30,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:09:30,873 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 168 states and 259 transitions. [2021-10-13 00:09:30,877 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 58 [2021-10-13 00:09:30,882 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 168 states to 162 states and 253 transitions. [2021-10-13 00:09:30,883 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 82 [2021-10-13 00:09:30,883 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 82 [2021-10-13 00:09:30,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 162 states and 253 transitions. [2021-10-13 00:09:30,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 00:09:30,884 INFO L681 BuchiCegarLoop]: Abstraction has 162 states and 253 transitions. [2021-10-13 00:09:30,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states and 253 transitions. [2021-10-13 00:09:30,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 122. [2021-10-13 00:09:30,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 76 states have (on average 1.1973684210526316) internal successors, (91), 81 states have internal predecessors, (91), 36 states have call successors, (36), 6 states have call predecessors, (36), 10 states have return successors, (58), 34 states have call predecessors, (58), 36 states have call successors, (58) [2021-10-13 00:09:30,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 185 transitions. [2021-10-13 00:09:30,900 INFO L704 BuchiCegarLoop]: Abstraction has 122 states and 185 transitions. [2021-10-13 00:09:30,901 INFO L587 BuchiCegarLoop]: Abstraction has 122 states and 185 transitions. [2021-10-13 00:09:30,901 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-10-13 00:09:30,901 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 122 states and 185 transitions. [2021-10-13 00:09:30,903 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 37 [2021-10-13 00:09:30,903 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:09:30,903 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:09:30,905 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-13 00:09:30,905 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [11, 11, 6, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:09:30,905 INFO L791 eck$LassoCheckResult]: Stem: 2013#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, main_#t~ret9, main_#t~ret10, main_#t~post8, main_~k~0, main_#t~post7, main_~n~0, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := main_#t~nondet4;havoc main_#t~nondet4; 2014#L35 assume !(main_~x~0 < 0);main_~y~0 := main_#t~nondet5;havoc main_#t~nondet5; 2044#L38 assume !(main_~y~0 < 0);main_~z~0 := main_#t~nondet6;havoc main_#t~nondet6;main_~n~0 := 0; 2045#L41-3 assume !!(main_~n~0 <= main_~x~0);main_~k~0 := 0; 2049#L42-3 [2021-10-13 00:09:30,906 INFO L793 eck$LassoCheckResult]: Loop: 2049#L42-3 assume !!(main_~k~0 <= main_~x~0); 2078#L43 assume main_~k~0 <= main_~n~0;binomialCoefficient_#in~n, binomialCoefficient_#in~k := main_~n~0, main_~k~0;havoc binomialCoefficient_#res;havoc binomialCoefficient_#t~ret1, binomialCoefficient_#t~ret2, binomialCoefficient_#t~ret3, binomialCoefficient_~n, binomialCoefficient_~k;binomialCoefficient_~n := binomialCoefficient_#in~n;binomialCoefficient_~k := binomialCoefficient_#in~k; 1999#L30 call binomialCoefficient_#t~ret1 := fact(binomialCoefficient_~n);< 2035#factENTRY ~n := #in~n; 2075#L25 assume !(~n <= 0); 2070#L26 call #t~ret0 := fact(~n - 1);< 2040#factENTRY ~n := #in~n; 2077#L25 assume ~n <= 0;#res := 1; 2074#factFINAL assume true; 2069#factEXIT >#65#return; 2068#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 2067#factFINAL assume true; 2066#factEXIT >#67#return; 1997#L30-1 call binomialCoefficient_#t~ret2 := fact(binomialCoefficient_~k);< 2035#factENTRY ~n := #in~n; 2075#L25 assume ~n <= 0;#res := 1; 2076#factFINAL assume true; 1991#factEXIT >#69#return; 1996#L30-2 call binomialCoefficient_#t~ret3 := fact(binomialCoefficient_~n - binomialCoefficient_~k);< 2035#factENTRY ~n := #in~n; 2075#L25 assume !(~n <= 0); 2070#L26 call #t~ret0 := fact(~n - 1);< 2040#factENTRY ~n := #in~n; 2077#L25 assume ~n <= 0;#res := 1; 2074#factFINAL assume true; 2069#factEXIT >#65#return; 2068#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 2067#factFINAL assume true; 2066#factEXIT >#71#return; 2002#L30-3 binomialCoefficient_#res := (if binomialCoefficient_#t~ret1 < 0 && 0 != binomialCoefficient_#t~ret1 % (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3) then (if binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3 < 0 then binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3) - 1 else 1 + binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3)) else binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3));havoc binomialCoefficient_#t~ret1;havoc binomialCoefficient_#t~ret2;havoc binomialCoefficient_#t~ret3; 2108#L30-4 main_#t~ret9 := binomialCoefficient_#res;havoc main_#t~ret9; 2042#L42-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 2027#L42-3 assume !!(main_~k~0 <= main_~x~0); 2028#L43 assume !(main_~k~0 <= main_~n~0);binomialCoefficient_#in~n, binomialCoefficient_#in~k := main_~k~0, main_~n~0;havoc binomialCoefficient_#res;havoc binomialCoefficient_#t~ret1, binomialCoefficient_#t~ret2, binomialCoefficient_#t~ret3, binomialCoefficient_~n, binomialCoefficient_~k;binomialCoefficient_~n := binomialCoefficient_#in~n;binomialCoefficient_~k := binomialCoefficient_#in~k; 1994#L30-5 call binomialCoefficient_#t~ret1 := fact(binomialCoefficient_~n);< 2035#factENTRY ~n := #in~n; 2075#L25 assume !(~n <= 0); 2070#L26 call #t~ret0 := fact(~n - 1);< 2040#factENTRY ~n := #in~n; 2077#L25 assume ~n <= 0;#res := 1; 2074#factFINAL assume true; 2069#factEXIT >#65#return; 2068#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 2067#factFINAL assume true; 2066#factEXIT >#73#return; 1995#L30-6 call binomialCoefficient_#t~ret2 := fact(binomialCoefficient_~k);< 2035#factENTRY ~n := #in~n; 2075#L25 assume !(~n <= 0); 2070#L26 call #t~ret0 := fact(~n - 1);< 2040#factENTRY ~n := #in~n; 2077#L25 assume ~n <= 0;#res := 1; 2074#factFINAL assume true; 2069#factEXIT >#65#return; 2068#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 2067#factFINAL assume true; 2066#factEXIT >#75#return; 1992#L30-7 call binomialCoefficient_#t~ret3 := fact(binomialCoefficient_~n - binomialCoefficient_~k);< 2035#factENTRY ~n := #in~n; 2075#L25 assume !(~n <= 0); 2070#L26 call #t~ret0 := fact(~n - 1);< 2040#factENTRY ~n := #in~n; 2077#L25 assume ~n <= 0;#res := 1; 2074#factFINAL assume true; 2069#factEXIT >#65#return; 2068#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 2067#factFINAL assume true; 2066#factEXIT >#77#return; 2065#L30-8 binomialCoefficient_#res := (if binomialCoefficient_#t~ret1 < 0 && 0 != binomialCoefficient_#t~ret1 % (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3) then (if binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3 < 0 then binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3) - 1 else 1 + binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3)) else binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3));havoc binomialCoefficient_#t~ret1;havoc binomialCoefficient_#t~ret2;havoc binomialCoefficient_#t~ret3; 2063#L30-9 main_#t~ret10 := binomialCoefficient_#res;havoc main_#t~ret10; 2060#L42-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 2059#L42-3 assume !(main_~k~0 <= main_~x~0); 2056#L41-2 main_#t~post7 := main_~n~0;main_~n~0 := 1 + main_#t~post7;havoc main_#t~post7; 2048#L41-3 assume !!(main_~n~0 <= main_~x~0);main_~k~0 := 0; 2049#L42-3 [2021-10-13 00:09:30,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:30,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1205710, now seen corresponding path program 2 times [2021-10-13 00:09:30,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:09:30,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707011358] [2021-10-13 00:09:30,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:30,907 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:09:30,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:09:30,913 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:09:30,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:09:30,917 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:09:30,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:30,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1284734623, now seen corresponding path program 1 times [2021-10-13 00:09:30,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:09:30,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2538301] [2021-10-13 00:09:30,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:30,919 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:09:30,926 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:09:30,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [466409513] [2021-10-13 00:09:30,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:30,927 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:09:30,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:30,928 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:09:30,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2021-10-13 00:09:31,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:09:31,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 00:09:31,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:09:31,432 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 142 proven. 18 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-10-13 00:09:31,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:09:31,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2538301] [2021-10-13 00:09:31,432 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:09:31,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466409513] [2021-10-13 00:09:31,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466409513] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:09:31,433 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:09:31,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-10-13 00:09:31,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478754207] [2021-10-13 00:09:31,435 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 00:09:31,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:09:31,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 00:09:31,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:09:31,437 INFO L87 Difference]: Start difference. First operand 122 states and 185 transitions. cyclomatic complexity: 68 Second operand has 10 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 6 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2021-10-13 00:09:31,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:09:31,756 INFO L93 Difference]: Finished difference Result 185 states and 292 transitions. [2021-10-13 00:09:31,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 00:09:31,759 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 185 states and 292 transitions. [2021-10-13 00:09:31,763 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 67 [2021-10-13 00:09:31,771 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 185 states to 185 states and 292 transitions. [2021-10-13 00:09:31,774 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 93 [2021-10-13 00:09:31,775 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 93 [2021-10-13 00:09:31,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 185 states and 292 transitions. [2021-10-13 00:09:31,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 00:09:31,775 INFO L681 BuchiCegarLoop]: Abstraction has 185 states and 292 transitions. [2021-10-13 00:09:31,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states and 292 transitions. [2021-10-13 00:09:31,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 152. [2021-10-13 00:09:31,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 96 states have (on average 1.15625) internal successors, (111), 101 states have internal predecessors, (111), 46 states have call successors, (46), 6 states have call predecessors, (46), 10 states have return successors, (78), 44 states have call predecessors, (78), 46 states have call successors, (78) [2021-10-13 00:09:31,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 235 transitions. [2021-10-13 00:09:31,819 INFO L704 BuchiCegarLoop]: Abstraction has 152 states and 235 transitions. [2021-10-13 00:09:31,819 INFO L587 BuchiCegarLoop]: Abstraction has 152 states and 235 transitions. [2021-10-13 00:09:31,819 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-10-13 00:09:31,819 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 152 states and 235 transitions. [2021-10-13 00:09:31,821 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 52 [2021-10-13 00:09:31,821 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:09:31,821 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:09:31,824 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-13 00:09:31,848 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [17, 17, 9, 8, 8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:09:31,848 INFO L791 eck$LassoCheckResult]: Stem: 2555#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, main_#t~ret9, main_#t~ret10, main_#t~post8, main_~k~0, main_#t~post7, main_~n~0, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := main_#t~nondet4;havoc main_#t~nondet4; 2556#L35 assume !(main_~x~0 < 0);main_~y~0 := main_#t~nondet5;havoc main_#t~nondet5; 2585#L38 assume !(main_~y~0 < 0);main_~z~0 := main_#t~nondet6;havoc main_#t~nondet6;main_~n~0 := 0; 2586#L41-3 assume !!(main_~n~0 <= main_~x~0);main_~k~0 := 0; 2592#L42-3 [2021-10-13 00:09:31,852 INFO L793 eck$LassoCheckResult]: Loop: 2592#L42-3 assume !!(main_~k~0 <= main_~x~0); 2639#L43 assume main_~k~0 <= main_~n~0;binomialCoefficient_#in~n, binomialCoefficient_#in~k := main_~n~0, main_~k~0;havoc binomialCoefficient_#res;havoc binomialCoefficient_#t~ret1, binomialCoefficient_#t~ret2, binomialCoefficient_#t~ret3, binomialCoefficient_~n, binomialCoefficient_~k;binomialCoefficient_~n := binomialCoefficient_#in~n;binomialCoefficient_~k := binomialCoefficient_#in~k; 2624#L30 call binomialCoefficient_#t~ret1 := fact(binomialCoefficient_~n);< 2536#factENTRY ~n := #in~n; 2637#L25 assume !(~n <= 0); 2542#L26 call #t~ret0 := fact(~n - 1);< 2561#factENTRY ~n := #in~n; 2562#L25 assume ~n <= 0;#res := 1; 2559#factFINAL assume true; 2539#factEXIT >#65#return; 2544#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 2635#factFINAL assume true; 2633#factEXIT >#67#return; 2571#L30-1 call binomialCoefficient_#t~ret2 := fact(binomialCoefficient_~k);< 2536#factENTRY ~n := #in~n; 2637#L25 assume ~n <= 0;#res := 1; 2638#factFINAL assume true; 2622#factEXIT >#69#return; 2625#L30-2 call binomialCoefficient_#t~ret3 := fact(binomialCoefficient_~n - binomialCoefficient_~k);< 2536#factENTRY ~n := #in~n; 2637#L25 assume !(~n <= 0); 2542#L26 call #t~ret0 := fact(~n - 1);< 2561#factENTRY ~n := #in~n; 2562#L25 assume ~n <= 0;#res := 1; 2559#factFINAL assume true; 2539#factEXIT >#65#return; 2544#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 2635#factFINAL assume true; 2633#factEXIT >#71#return; 2627#L30-3 binomialCoefficient_#res := (if binomialCoefficient_#t~ret1 < 0 && 0 != binomialCoefficient_#t~ret1 % (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3) then (if binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3 < 0 then binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3) - 1 else 1 + binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3)) else binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3));havoc binomialCoefficient_#t~ret1;havoc binomialCoefficient_#t~ret2;havoc binomialCoefficient_#t~ret3; 2680#L30-4 main_#t~ret9 := binomialCoefficient_#res;havoc main_#t~ret9; 2583#L42-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 2569#L42-3 assume !!(main_~k~0 <= main_~x~0); 2565#L43 assume main_~k~0 <= main_~n~0;binomialCoefficient_#in~n, binomialCoefficient_#in~k := main_~n~0, main_~k~0;havoc binomialCoefficient_#res;havoc binomialCoefficient_#t~ret1, binomialCoefficient_#t~ret2, binomialCoefficient_#t~ret3, binomialCoefficient_~n, binomialCoefficient_~k;binomialCoefficient_~n := binomialCoefficient_#in~n;binomialCoefficient_~k := binomialCoefficient_#in~k; 2566#L30 call binomialCoefficient_#t~ret1 := fact(binomialCoefficient_~n);< 2536#factENTRY ~n := #in~n; 2637#L25 assume !(~n <= 0); 2542#L26 call #t~ret0 := fact(~n - 1);< 2561#factENTRY ~n := #in~n; 2562#L25 assume ~n <= 0;#res := 1; 2559#factFINAL assume true; 2539#factEXIT >#65#return; 2544#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 2635#factFINAL assume true; 2633#factEXIT >#67#return; 2623#L30-1 call binomialCoefficient_#t~ret2 := fact(binomialCoefficient_~k);< 2536#factENTRY ~n := #in~n; 2637#L25 assume !(~n <= 0); 2542#L26 call #t~ret0 := fact(~n - 1);< 2561#factENTRY ~n := #in~n; 2562#L25 assume ~n <= 0;#res := 1; 2559#factFINAL assume true; 2539#factEXIT >#65#return; 2544#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 2635#factFINAL assume true; 2633#factEXIT >#69#return; 2553#L30-2 call binomialCoefficient_#t~ret3 := fact(binomialCoefficient_~n - binomialCoefficient_~k);< 2536#factENTRY ~n := #in~n; 2637#L25 assume !(~n <= 0); 2542#L26 call #t~ret0 := fact(~n - 1);< 2561#factENTRY ~n := #in~n; 2562#L25 assume ~n <= 0;#res := 1; 2559#factFINAL assume true; 2539#factEXIT >#65#return; 2544#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 2635#factFINAL assume true; 2633#factEXIT >#71#return; 2626#L30-3 binomialCoefficient_#res := (if binomialCoefficient_#t~ret1 < 0 && 0 != binomialCoefficient_#t~ret1 % (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3) then (if binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3 < 0 then binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3) - 1 else 1 + binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3)) else binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3));havoc binomialCoefficient_#t~ret1;havoc binomialCoefficient_#t~ret2;havoc binomialCoefficient_#t~ret3; 2686#L30-4 main_#t~ret9 := binomialCoefficient_#res;havoc main_#t~ret9; 2636#L42-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 2634#L42-3 assume !!(main_~k~0 <= main_~x~0); 2605#L43 assume !(main_~k~0 <= main_~n~0);binomialCoefficient_#in~n, binomialCoefficient_#in~k := main_~k~0, main_~n~0;havoc binomialCoefficient_#res;havoc binomialCoefficient_#t~ret1, binomialCoefficient_#t~ret2, binomialCoefficient_#t~ret3, binomialCoefficient_~n, binomialCoefficient_~k;binomialCoefficient_~n := binomialCoefficient_#in~n;binomialCoefficient_~k := binomialCoefficient_#in~k; 2535#L30-5 call binomialCoefficient_#t~ret1 := fact(binomialCoefficient_~n);< 2536#factENTRY ~n := #in~n; 2637#L25 assume !(~n <= 0); 2542#L26 call #t~ret0 := fact(~n - 1);< 2561#factENTRY ~n := #in~n; 2562#L25 assume ~n <= 0;#res := 1; 2559#factFINAL assume true; 2539#factEXIT >#65#return; 2544#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 2635#factFINAL assume true; 2633#factEXIT >#73#return; 2573#L30-6 call binomialCoefficient_#t~ret2 := fact(binomialCoefficient_~k);< 2536#factENTRY ~n := #in~n; 2637#L25 assume !(~n <= 0); 2542#L26 call #t~ret0 := fact(~n - 1);< 2561#factENTRY ~n := #in~n; 2562#L25 assume ~n <= 0;#res := 1; 2559#factFINAL assume true; 2539#factEXIT >#65#return; 2544#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 2635#factFINAL assume true; 2633#factEXIT >#75#return; 2595#L30-7 call binomialCoefficient_#t~ret3 := fact(binomialCoefficient_~n - binomialCoefficient_~k);< 2536#factENTRY ~n := #in~n; 2637#L25 assume !(~n <= 0); 2542#L26 call #t~ret0 := fact(~n - 1);< 2561#factENTRY ~n := #in~n; 2562#L25 assume ~n <= 0;#res := 1; 2559#factFINAL assume true; 2539#factEXIT >#65#return; 2544#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 2635#factFINAL assume true; 2633#factEXIT >#77#return; 2575#L30-8 binomialCoefficient_#res := (if binomialCoefficient_#t~ret1 < 0 && 0 != binomialCoefficient_#t~ret1 % (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3) then (if binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3 < 0 then binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3) - 1 else 1 + binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3)) else binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3));havoc binomialCoefficient_#t~ret1;havoc binomialCoefficient_#t~ret2;havoc binomialCoefficient_#t~ret3; 2576#L30-9 main_#t~ret10 := binomialCoefficient_#res;havoc main_#t~ret10; 2606#L42-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 2604#L42-3 assume !(main_~k~0 <= main_~x~0); 2601#L41-2 main_#t~post7 := main_~n~0;main_~n~0 := 1 + main_#t~post7;havoc main_#t~post7; 2591#L41-3 assume !!(main_~n~0 <= main_~x~0);main_~k~0 := 0; 2592#L42-3 [2021-10-13 00:09:31,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:31,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1205710, now seen corresponding path program 3 times [2021-10-13 00:09:31,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:09:31,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058751411] [2021-10-13 00:09:31,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:31,854 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:09:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:09:31,867 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:09:31,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:09:31,871 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:09:31,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:31,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1420952905, now seen corresponding path program 2 times [2021-10-13 00:09:31,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:09:31,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528646281] [2021-10-13 00:09:31,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:31,872 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:09:31,878 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:09:31,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1650486879] [2021-10-13 00:09:31,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:09:31,879 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:09:31,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:31,881 INFO L229 MonitoredProcess]: Starting monitored process 97 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:09:31,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2021-10-13 00:09:32,069 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:09:32,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:09:32,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 00:09:32,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:09:32,489 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 355 proven. 48 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2021-10-13 00:09:32,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:09:32,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528646281] [2021-10-13 00:09:32,490 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:09:32,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650486879] [2021-10-13 00:09:32,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650486879] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:09:32,490 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:09:32,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-13 00:09:32,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753134978] [2021-10-13 00:09:32,491 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 00:09:32,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:09:32,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 00:09:32,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:09:32,492 INFO L87 Difference]: Start difference. First operand 152 states and 235 transitions. cyclomatic complexity: 88 Second operand has 11 states, 9 states have (on average 4.111111111111111) internal successors, (37), 11 states have internal predecessors, (37), 6 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2021-10-13 00:09:32,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:09:32,930 INFO L93 Difference]: Finished difference Result 285 states and 466 transitions. [2021-10-13 00:09:32,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 00:09:32,930 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 285 states and 466 transitions. [2021-10-13 00:09:32,938 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 96 [2021-10-13 00:09:32,946 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 285 states to 285 states and 466 transitions. [2021-10-13 00:09:32,946 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 143 [2021-10-13 00:09:32,947 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 143 [2021-10-13 00:09:32,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 285 states and 466 transitions. [2021-10-13 00:09:32,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 00:09:32,949 INFO L681 BuchiCegarLoop]: Abstraction has 285 states and 466 transitions. [2021-10-13 00:09:32,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states and 466 transitions. [2021-10-13 00:09:32,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 238. [2021-10-13 00:09:32,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 154 states have (on average 1.1233766233766234) internal successors, (173), 157 states have internal predecessors, (173), 68 states have call successors, (68), 10 states have call predecessors, (68), 16 states have return successors, (170), 70 states have call predecessors, (170), 68 states have call successors, (170) [2021-10-13 00:09:32,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 411 transitions. [2021-10-13 00:09:32,991 INFO L704 BuchiCegarLoop]: Abstraction has 238 states and 411 transitions. [2021-10-13 00:09:32,991 INFO L587 BuchiCegarLoop]: Abstraction has 238 states and 411 transitions. [2021-10-13 00:09:32,992 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-10-13 00:09:32,992 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 238 states and 411 transitions. [2021-10-13 00:09:32,995 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 83 [2021-10-13 00:09:32,995 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:09:32,995 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:09:33,000 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-13 00:09:33,000 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [18, 18, 9, 9, 9, 9, 9, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:09:33,001 INFO L791 eck$LassoCheckResult]: Stem: 3373#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, main_#t~ret9, main_#t~ret10, main_#t~post8, main_~k~0, main_#t~post7, main_~n~0, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := main_#t~nondet4;havoc main_#t~nondet4; 3374#L35 assume !(main_~x~0 < 0);main_~y~0 := main_#t~nondet5;havoc main_#t~nondet5; 3410#L38 assume !(main_~y~0 < 0);main_~z~0 := main_#t~nondet6;havoc main_#t~nondet6;main_~n~0 := 0; 3411#L41-3 assume !!(main_~n~0 <= main_~x~0);main_~k~0 := 0; 3413#L42-3 [2021-10-13 00:09:33,002 INFO L793 eck$LassoCheckResult]: Loop: 3413#L42-3 assume !!(main_~k~0 <= main_~x~0); 3492#L43 assume main_~k~0 <= main_~n~0;binomialCoefficient_#in~n, binomialCoefficient_#in~k := main_~n~0, main_~k~0;havoc binomialCoefficient_#res;havoc binomialCoefficient_#t~ret1, binomialCoefficient_#t~ret2, binomialCoefficient_#t~ret3, binomialCoefficient_~n, binomialCoefficient_~k;binomialCoefficient_~n := binomialCoefficient_#in~n;binomialCoefficient_~k := binomialCoefficient_#in~k; 3371#L30 call binomialCoefficient_#t~ret1 := fact(binomialCoefficient_~n);< 3333#factENTRY ~n := #in~n; 3452#L25 assume !(~n <= 0); 3339#L26 call #t~ret0 := fact(~n - 1);< 3401#factENTRY ~n := #in~n; 3389#L25 assume ~n <= 0;#res := 1; 3390#factFINAL assume true; 3478#factEXIT >#65#return; 3477#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 3476#factFINAL assume true; 3435#factEXIT >#67#return; 3393#L30-1 call binomialCoefficient_#t~ret2 := fact(binomialCoefficient_~k);< 3333#factENTRY ~n := #in~n; 3452#L25 assume ~n <= 0;#res := 1; 3450#factFINAL assume true; 3448#factEXIT >#69#return; 3443#L30-2 call binomialCoefficient_#t~ret3 := fact(binomialCoefficient_~n - binomialCoefficient_~k);< 3333#factENTRY ~n := #in~n; 3452#L25 assume !(~n <= 0); 3339#L26 call #t~ret0 := fact(~n - 1);< 3401#factENTRY ~n := #in~n; 3389#L25 assume !(~n <= 0); 3337#L26 call #t~ret0 := fact(~n - 1);< 3401#factENTRY ~n := #in~n; 3389#L25 assume ~n <= 0;#res := 1; 3390#factFINAL assume true; 3478#factEXIT >#65#return; 3341#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 3483#factFINAL assume true; 3336#factEXIT >#65#return; 3342#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 3453#factFINAL assume true; 3454#factEXIT >#71#return; 3475#L30-3 binomialCoefficient_#res := (if binomialCoefficient_#t~ret1 < 0 && 0 != binomialCoefficient_#t~ret1 % (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3) then (if binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3 < 0 then binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3) - 1 else 1 + binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3)) else binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3));havoc binomialCoefficient_#t~ret1;havoc binomialCoefficient_#t~ret2;havoc binomialCoefficient_#t~ret3; 3505#L30-4 main_#t~ret9 := binomialCoefficient_#res;havoc main_#t~ret9; 3503#L42-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 3500#L42-3 assume !!(main_~k~0 <= main_~x~0); 3499#L43 assume main_~k~0 <= main_~n~0;binomialCoefficient_#in~n, binomialCoefficient_#in~k := main_~n~0, main_~k~0;havoc binomialCoefficient_#res;havoc binomialCoefficient_#t~ret1, binomialCoefficient_#t~ret2, binomialCoefficient_#t~ret3, binomialCoefficient_~n, binomialCoefficient_~k;binomialCoefficient_~n := binomialCoefficient_#in~n;binomialCoefficient_~k := binomialCoefficient_#in~k; 3442#L30 call binomialCoefficient_#t~ret1 := fact(binomialCoefficient_~n);< 3333#factENTRY ~n := #in~n; 3452#L25 assume !(~n <= 0); 3339#L26 call #t~ret0 := fact(~n - 1);< 3401#factENTRY ~n := #in~n; 3389#L25 assume ~n <= 0;#res := 1; 3390#factFINAL assume true; 3478#factEXIT >#65#return; 3477#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 3476#factFINAL assume true; 3435#factEXIT >#67#return; 3441#L30-1 call binomialCoefficient_#t~ret2 := fact(binomialCoefficient_~k);< 3333#factENTRY ~n := #in~n; 3452#L25 assume !(~n <= 0); 3339#L26 call #t~ret0 := fact(~n - 1);< 3401#factENTRY ~n := #in~n; 3389#L25 assume ~n <= 0;#res := 1; 3390#factFINAL assume true; 3478#factEXIT >#65#return; 3477#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 3476#factFINAL assume true; 3435#factEXIT >#69#return; 3438#L30-2 call binomialCoefficient_#t~ret3 := fact(binomialCoefficient_~n - binomialCoefficient_~k);< 3333#factENTRY ~n := #in~n; 3452#L25 assume !(~n <= 0); 3339#L26 call #t~ret0 := fact(~n - 1);< 3401#factENTRY ~n := #in~n; 3389#L25 assume !(~n <= 0); 3337#L26 call #t~ret0 := fact(~n - 1);< 3401#factENTRY ~n := #in~n; 3389#L25 assume ~n <= 0;#res := 1; 3390#factFINAL assume true; 3478#factEXIT >#65#return; 3341#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 3483#factFINAL assume true; 3336#factEXIT >#65#return; 3342#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 3453#factFINAL assume true; 3454#factEXIT >#71#return; 3474#L30-3 binomialCoefficient_#res := (if binomialCoefficient_#t~ret1 < 0 && 0 != binomialCoefficient_#t~ret1 % (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3) then (if binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3 < 0 then binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3) - 1 else 1 + binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3)) else binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3));havoc binomialCoefficient_#t~ret1;havoc binomialCoefficient_#t~ret2;havoc binomialCoefficient_#t~ret3; 3473#L30-4 main_#t~ret9 := binomialCoefficient_#res;havoc main_#t~ret9; 3472#L42-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 3471#L42-3 assume !!(main_~k~0 <= main_~x~0); 3470#L43 assume !(main_~k~0 <= main_~n~0);binomialCoefficient_#in~n, binomialCoefficient_#in~k := main_~k~0, main_~n~0;havoc binomialCoefficient_#res;havoc binomialCoefficient_#t~ret1, binomialCoefficient_#t~ret2, binomialCoefficient_#t~ret3, binomialCoefficient_~n, binomialCoefficient_~k;binomialCoefficient_~n := binomialCoefficient_#in~n;binomialCoefficient_~k := binomialCoefficient_#in~k; 3332#L30-5 call binomialCoefficient_#t~ret1 := fact(binomialCoefficient_~n);< 3333#factENTRY ~n := #in~n; 3452#L25 assume !(~n <= 0); 3339#L26 call #t~ret0 := fact(~n - 1);< 3401#factENTRY ~n := #in~n; 3389#L25 assume ~n <= 0;#res := 1; 3390#factFINAL assume true; 3478#factEXIT >#65#return; 3477#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 3476#factFINAL assume true; 3435#factEXIT >#73#return; 3395#L30-6 call binomialCoefficient_#t~ret2 := fact(binomialCoefficient_~k);< 3333#factENTRY ~n := #in~n; 3452#L25 assume ~n <= 0;#res := 1; 3450#factFINAL assume true; 3448#factEXIT >#75#return; 3416#L30-7 call binomialCoefficient_#t~ret3 := fact(binomialCoefficient_~n - binomialCoefficient_~k);< 3333#factENTRY ~n := #in~n; 3452#L25 assume !(~n <= 0); 3339#L26 call #t~ret0 := fact(~n - 1);< 3401#factENTRY ~n := #in~n; 3389#L25 assume ~n <= 0;#res := 1; 3390#factFINAL assume true; 3478#factEXIT >#65#return; 3477#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 3476#factFINAL assume true; 3435#factEXIT >#77#return; 3397#L30-8 binomialCoefficient_#res := (if binomialCoefficient_#t~ret1 < 0 && 0 != binomialCoefficient_#t~ret1 % (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3) then (if binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3 < 0 then binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3) - 1 else 1 + binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3)) else binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3));havoc binomialCoefficient_#t~ret1;havoc binomialCoefficient_#t~ret2;havoc binomialCoefficient_#t~ret3; 3398#L30-9 main_#t~ret10 := binomialCoefficient_#res;havoc main_#t~ret10; 3429#L42-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 3427#L42-3 assume !(main_~k~0 <= main_~x~0); 3424#L41-2 main_#t~post7 := main_~n~0;main_~n~0 := 1 + main_#t~post7;havoc main_#t~post7; 3412#L41-3 assume !!(main_~n~0 <= main_~x~0);main_~k~0 := 0; 3413#L42-3 [2021-10-13 00:09:33,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:33,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1205710, now seen corresponding path program 4 times [2021-10-13 00:09:33,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:09:33,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26430025] [2021-10-13 00:09:33,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:33,004 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:09:33,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:09:33,010 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:09:33,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:09:33,017 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:09:33,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:33,020 INFO L82 PathProgramCache]: Analyzing trace with hash 191172013, now seen corresponding path program 3 times [2021-10-13 00:09:33,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:09:33,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841737774] [2021-10-13 00:09:33,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:33,020 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:09:33,039 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:09:33,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1444160830] [2021-10-13 00:09:33,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:09:33,040 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:09:33,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:33,047 INFO L229 MonitoredProcess]: Starting monitored process 98 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:09:33,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2021-10-13 00:09:33,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-13 00:09:33,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:09:33,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 00:09:33,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:09:33,743 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 125 proven. 63 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2021-10-13 00:09:33,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:09:33,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841737774] [2021-10-13 00:09:33,744 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:09:33,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444160830] [2021-10-13 00:09:33,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444160830] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:09:33,745 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:09:33,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-10-13 00:09:33,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784545619] [2021-10-13 00:09:33,749 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 00:09:33,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:09:33,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 00:09:33,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-13 00:09:33,751 INFO L87 Difference]: Start difference. First operand 238 states and 411 transitions. cyclomatic complexity: 179 Second operand has 14 states, 11 states have (on average 2.909090909090909) internal successors, (32), 14 states have internal predecessors, (32), 7 states have call successors, (12), 1 states have call predecessors, (12), 4 states have return successors, (12), 5 states have call predecessors, (12), 7 states have call successors, (12) [2021-10-13 00:09:34,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:09:34,678 INFO L93 Difference]: Finished difference Result 604 states and 1105 transitions. [2021-10-13 00:09:34,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 00:09:34,679 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 604 states and 1105 transitions. [2021-10-13 00:09:34,691 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 229 [2021-10-13 00:09:34,706 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 604 states to 598 states and 1099 transitions. [2021-10-13 00:09:34,706 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 298 [2021-10-13 00:09:34,707 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 298 [2021-10-13 00:09:34,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 598 states and 1099 transitions. [2021-10-13 00:09:34,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 00:09:34,708 INFO L681 BuchiCegarLoop]: Abstraction has 598 states and 1099 transitions. [2021-10-13 00:09:34,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states and 1099 transitions. [2021-10-13 00:09:34,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 279. [2021-10-13 00:09:34,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 178 states have (on average 1.1292134831460674) internal successors, (201), 179 states have internal predecessors, (201), 85 states have call successors, (85), 10 states have call predecessors, (85), 16 states have return successors, (213), 89 states have call predecessors, (213), 85 states have call successors, (213) [2021-10-13 00:09:34,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 499 transitions. [2021-10-13 00:09:34,745 INFO L704 BuchiCegarLoop]: Abstraction has 279 states and 499 transitions. [2021-10-13 00:09:34,745 INFO L587 BuchiCegarLoop]: Abstraction has 279 states and 499 transitions. [2021-10-13 00:09:34,745 INFO L425 BuchiCegarLoop]: ======== Iteration 12============ [2021-10-13 00:09:34,745 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 279 states and 499 transitions. [2021-10-13 00:09:34,748 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 87 [2021-10-13 00:09:34,748 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:09:34,748 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:09:34,754 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-13 00:09:34,755 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [17, 17, 9, 8, 8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:09:34,755 INFO L791 eck$LassoCheckResult]: Stem: 4619#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, main_#t~ret9, main_#t~ret10, main_#t~post8, main_~k~0, main_#t~post7, main_~n~0, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := main_#t~nondet4;havoc main_#t~nondet4; 4620#L35 assume !(main_~x~0 < 0);main_~y~0 := main_#t~nondet5;havoc main_#t~nondet5; 4652#L38 assume !(main_~y~0 < 0);main_~z~0 := main_#t~nondet6;havoc main_#t~nondet6;main_~n~0 := 0; 4653#L41-3 assume !!(main_~n~0 <= main_~x~0);main_~k~0 := 0; 4655#L42-3 [2021-10-13 00:09:34,756 INFO L793 eck$LassoCheckResult]: Loop: 4655#L42-3 assume !!(main_~k~0 <= main_~x~0); 4713#L43 assume main_~k~0 <= main_~n~0;binomialCoefficient_#in~n, binomialCoefficient_#in~k := main_~n~0, main_~k~0;havoc binomialCoefficient_#res;havoc binomialCoefficient_#t~ret1, binomialCoefficient_#t~ret2, binomialCoefficient_#t~ret3, binomialCoefficient_~n, binomialCoefficient_~k;binomialCoefficient_~n := binomialCoefficient_#in~n;binomialCoefficient_~k := binomialCoefficient_#in~k; 4683#L30 call binomialCoefficient_#t~ret1 := fact(binomialCoefficient_~n);< 4689#factENTRY ~n := #in~n; 4709#L25 assume !(~n <= 0); 4703#L26 call #t~ret0 := fact(~n - 1);< 4647#factENTRY ~n := #in~n; 4710#L25 assume ~n <= 0;#res := 1; 4708#factFINAL assume true; 4702#factEXIT >#65#return; 4700#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 4690#factFINAL assume true; 4691#factEXIT >#67#return; 4673#L30-1 call binomialCoefficient_#t~ret2 := fact(binomialCoefficient_~k);< 4689#factENTRY ~n := #in~n; 4709#L25 assume ~n <= 0;#res := 1; 4696#factFINAL assume true; 4692#factEXIT >#69#return; 4672#L30-2 call binomialCoefficient_#t~ret3 := fact(binomialCoefficient_~n - binomialCoefficient_~k);< 4689#factENTRY ~n := #in~n; 4709#L25 assume !(~n <= 0); 4703#L26 call #t~ret0 := fact(~n - 1);< 4647#factENTRY ~n := #in~n; 4710#L25 assume ~n <= 0;#res := 1; 4708#factFINAL assume true; 4702#factEXIT >#65#return; 4700#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 4690#factFINAL assume true; 4691#factEXIT >#71#return; 4694#L30-3 binomialCoefficient_#res := (if binomialCoefficient_#t~ret1 < 0 && 0 != binomialCoefficient_#t~ret1 % (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3) then (if binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3 < 0 then binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3) - 1 else 1 + binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3)) else binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3));havoc binomialCoefficient_#t~ret1;havoc binomialCoefficient_#t~ret2;havoc binomialCoefficient_#t~ret3; 4827#L30-4 main_#t~ret9 := binomialCoefficient_#res;havoc main_#t~ret9; 4824#L42-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 4823#L42-3 assume !!(main_~k~0 <= main_~x~0); 4822#L43 assume main_~k~0 <= main_~n~0;binomialCoefficient_#in~n, binomialCoefficient_#in~k := main_~n~0, main_~k~0;havoc binomialCoefficient_#res;havoc binomialCoefficient_#t~ret1, binomialCoefficient_#t~ret2, binomialCoefficient_#t~ret3, binomialCoefficient_~n, binomialCoefficient_~k;binomialCoefficient_~n := binomialCoefficient_#in~n;binomialCoefficient_~k := binomialCoefficient_#in~k; 4680#L30 call binomialCoefficient_#t~ret1 := fact(binomialCoefficient_~n);< 4689#factENTRY ~n := #in~n; 4709#L25 assume !(~n <= 0); 4703#L26 call #t~ret0 := fact(~n - 1);< 4647#factENTRY ~n := #in~n; 4710#L25 assume ~n <= 0;#res := 1; 4708#factFINAL assume true; 4702#factEXIT >#65#return; 4700#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 4690#factFINAL assume true; 4691#factEXIT >#67#return; 4674#L30-1 call binomialCoefficient_#t~ret2 := fact(binomialCoefficient_~k);< 4689#factENTRY ~n := #in~n; 4709#L25 assume !(~n <= 0); 4703#L26 call #t~ret0 := fact(~n - 1);< 4647#factENTRY ~n := #in~n; 4710#L25 assume ~n <= 0;#res := 1; 4708#factFINAL assume true; 4702#factEXIT >#65#return; 4700#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 4690#factFINAL assume true; 4691#factEXIT >#69#return; 4686#L30-2 call binomialCoefficient_#t~ret3 := fact(binomialCoefficient_~n - binomialCoefficient_~k);< 4697#factENTRY ~n := #in~n; 4698#L25 assume ~n <= 0;#res := 1; 4696#factFINAL assume true; 4692#factEXIT >#71#return; 4695#L30-3 binomialCoefficient_#res := (if binomialCoefficient_#t~ret1 < 0 && 0 != binomialCoefficient_#t~ret1 % (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3) then (if binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3 < 0 then binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3) - 1 else 1 + binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3)) else binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3));havoc binomialCoefficient_#t~ret1;havoc binomialCoefficient_#t~ret2;havoc binomialCoefficient_#t~ret3; 4820#L30-4 main_#t~ret9 := binomialCoefficient_#res;havoc main_#t~ret9; 4798#L42-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 4796#L42-3 assume !!(main_~k~0 <= main_~x~0); 4665#L43 assume !(main_~k~0 <= main_~n~0);binomialCoefficient_#in~n, binomialCoefficient_#in~k := main_~k~0, main_~n~0;havoc binomialCoefficient_#res;havoc binomialCoefficient_#t~ret1, binomialCoefficient_#t~ret2, binomialCoefficient_#t~ret3, binomialCoefficient_~n, binomialCoefficient_~k;binomialCoefficient_~n := binomialCoefficient_#in~n;binomialCoefficient_~k := binomialCoefficient_#in~k; 4671#L30-5 call binomialCoefficient_#t~ret1 := fact(binomialCoefficient_~n);< 4689#factENTRY ~n := #in~n; 4709#L25 assume !(~n <= 0); 4703#L26 call #t~ret0 := fact(~n - 1);< 4647#factENTRY ~n := #in~n; 4710#L25 assume !(~n <= 0); 4704#L26 call #t~ret0 := fact(~n - 1);< 4647#factENTRY ~n := #in~n; 4710#L25 assume ~n <= 0;#res := 1; 4708#factFINAL assume true; 4702#factEXIT >#65#return; 4705#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 4712#factFINAL assume true; 4707#factEXIT >#65#return; 4701#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 4699#factFINAL assume true; 4669#factEXIT >#73#return; 4682#L30-6 call binomialCoefficient_#t~ret2 := fact(binomialCoefficient_~k);< 4689#factENTRY ~n := #in~n; 4709#L25 assume !(~n <= 0); 4703#L26 call #t~ret0 := fact(~n - 1);< 4647#factENTRY ~n := #in~n; 4710#L25 assume ~n <= 0;#res := 1; 4708#factFINAL assume true; 4702#factEXIT >#65#return; 4700#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 4690#factFINAL assume true; 4691#factEXIT >#75#return; 4679#L30-7 call binomialCoefficient_#t~ret3 := fact(binomialCoefficient_~n - binomialCoefficient_~k);< 4689#factENTRY ~n := #in~n; 4709#L25 assume !(~n <= 0); 4703#L26 call #t~ret0 := fact(~n - 1);< 4647#factENTRY ~n := #in~n; 4710#L25 assume ~n <= 0;#res := 1; 4708#factFINAL assume true; 4702#factEXIT >#65#return; 4700#L26-1 #res := ~n * #t~ret0;havoc #t~ret0; 4690#factFINAL assume true; 4691#factEXIT >#77#return; 4668#L30-8 binomialCoefficient_#res := (if binomialCoefficient_#t~ret1 < 0 && 0 != binomialCoefficient_#t~ret1 % (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3) then (if binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3 < 0 then binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3) - 1 else 1 + binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3)) else binomialCoefficient_#t~ret1 / (binomialCoefficient_#t~ret2 * binomialCoefficient_#t~ret3));havoc binomialCoefficient_#t~ret1;havoc binomialCoefficient_#t~ret2;havoc binomialCoefficient_#t~ret3; 4667#L30-9 main_#t~ret10 := binomialCoefficient_#res;havoc main_#t~ret10; 4666#L42-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 4664#L42-3 assume !(main_~k~0 <= main_~x~0); 4662#L41-2 main_#t~post7 := main_~n~0;main_~n~0 := 1 + main_#t~post7;havoc main_#t~post7; 4654#L41-3 assume !!(main_~n~0 <= main_~x~0);main_~k~0 := 0; 4655#L42-3 [2021-10-13 00:09:34,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:34,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1205710, now seen corresponding path program 5 times [2021-10-13 00:09:34,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:09:34,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505787785] [2021-10-13 00:09:34,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:34,758 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:09:34,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:09:34,764 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:09:34,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:09:34,778 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:09:34,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:34,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1578538653, now seen corresponding path program 4 times [2021-10-13 00:09:34,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:09:34,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56859712] [2021-10-13 00:09:34,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:34,779 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:09:34,794 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:09:34,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [72127355] [2021-10-13 00:09:34,794 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 00:09:34,794 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:09:34,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:34,800 INFO L229 MonitoredProcess]: Starting monitored process 99 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:09:34,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2021-10-13 00:09:35,113 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 00:09:35,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-10-13 00:09:35,113 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:09:35,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:09:35,192 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:09:35,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:35,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1613108234, now seen corresponding path program 1 times [2021-10-13 00:09:35,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:09:35,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878980526] [2021-10-13 00:09:35,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:35,194 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:09:35,201 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:09:35,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [719980] [2021-10-13 00:09:35,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:35,205 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:09:35,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:35,207 INFO L229 MonitoredProcess]: Starting monitored process 100 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:09:35,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2021-10-13 00:09:35,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:09:35,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 00:09:35,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:09:35,712 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 143 proven. 1 refuted. 0 times theorem prover too weak. 474 trivial. 0 not checked. [2021-10-13 00:09:35,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:09:35,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878980526] [2021-10-13 00:09:35,713 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:09:35,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719980] [2021-10-13 00:09:35,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719980] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:09:35,713 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:09:35,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-13 00:09:35,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897864519] [2021-10-13 00:10:52,996 WARN L207 SmtUtils]: Spent 1.27 m on a formula simplification. DAG size of input: 192 DAG size of output: 1 [2021-10-13 00:10:52,999 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer has thrown an exception: java.lang.AssertionError: loopTF is false but loop analysis said: feasible at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.computeLoopTF(LassoCheck.java:343) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.(LassoCheck.java:833) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.(LassoCheck.java:252) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoop.iterate(BuchiCegarLoop.java:457) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.doTerminationAnalysis(BuchiAutomizerObserver.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.finish(BuchiAutomizerObserver.java:398) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-13 00:10:53,003 INFO L168 Benchmark]: Toolchain (without parser) took 95995.33 ms. Allocated memory was 127.9 MB in the beginning and 186.6 MB in the end (delta: 58.7 MB). Free memory was 101.1 MB in the beginning and 72.8 MB in the end (delta: 28.3 MB). Peak memory consumption was 123.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:10:53,003 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 81.8 MB. Free memory is still 40.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:10:53,004 INFO L168 Benchmark]: CACSL2BoogieTranslator took 229.92 ms. Allocated memory is still 127.9 MB. Free memory was 100.8 MB in the beginning and 106.8 MB in the end (delta: -6.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:10:53,004 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.27 ms. Allocated memory is still 127.9 MB. Free memory was 106.8 MB in the beginning and 105.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:10:53,005 INFO L168 Benchmark]: Boogie Preprocessor took 20.01 ms. Allocated memory is still 127.9 MB. Free memory was 105.5 MB in the beginning and 104.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:10:53,005 INFO L168 Benchmark]: RCFGBuilder took 307.27 ms. Allocated memory is still 127.9 MB. Free memory was 104.4 MB in the beginning and 94.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:10:53,006 INFO L168 Benchmark]: BuchiAutomizer took 95366.22 ms. Allocated memory was 127.9 MB in the beginning and 186.6 MB in the end (delta: 58.7 MB). Free memory was 94.9 MB in the beginning and 72.8 MB in the end (delta: 22.2 MB). Peak memory consumption was 120.3 MB. Max. memory is 16.1 GB. [2021-10-13 00:10:53,010 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 81.8 MB. Free memory is still 40.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 229.92 ms. Allocated memory is still 127.9 MB. Free memory was 100.8 MB in the beginning and 106.8 MB in the end (delta: -6.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 63.27 ms. Allocated memory is still 127.9 MB. Free memory was 106.8 MB in the beginning and 105.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.01 ms. Allocated memory is still 127.9 MB. Free memory was 105.5 MB in the beginning and 104.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 307.27 ms. Allocated memory is still 127.9 MB. Free memory was 104.4 MB in the beginning and 94.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 95366.22 ms. Allocated memory was 127.9 MB in the beginning and 186.6 MB in the end (delta: 58.7 MB). Free memory was 94.9 MB in the beginning and 72.8 MB in the end (delta: 22.2 MB). Peak memory consumption was 120.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - ExceptionOrErrorResult: AssertionError: loopTF is false but loop analysis said: feasible de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: AssertionError: loopTF is false but loop analysis said: feasible: de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.computeLoopTF(LassoCheck.java:343) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 00:10:53,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0 [2021-10-13 00:10:53,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2021-10-13 00:10:53,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2021-10-13 00:10:53,672 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2021-10-13 00:10:53,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0 [2021-10-13 00:10:54,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2021-10-13 00:10:54,270 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2021-10-13 00:10:54,474 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2021-10-13 00:10:54,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-10-13 00:10:54,875 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-10-13 00:10:55,073 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-10-13 00:10:55,269 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-10-13 00:10:55,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-13 00:10:55,672 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-10-13 00:10:55,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3a40c47-2afa-4eac-a8b6-334c7efc6f16/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...