./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/UpAndDown.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/UpAndDown.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg --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 1a3ce217426a55eb46107f2cdf23c10dcc5d92a99768880786a980fae67c3971 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Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:25:19,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:25:19,668 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:25:19,723 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:25:19,724 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:25:19,728 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:25:19,730 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:25:19,735 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:25:19,738 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:25:19,746 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:25:19,747 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:25:19,749 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:25:19,749 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:25:19,752 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:25:19,755 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:25:19,763 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:25:19,764 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:25:19,765 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:25:19,767 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:25:19,775 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:25:19,777 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:25:19,781 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:25:19,785 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:25:19,787 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:25:19,793 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:25:19,793 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:25:19,794 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:25:19,796 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:25:19,797 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:25:19,799 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:25:19,800 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:25:19,801 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:25:19,803 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:25:19,804 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:25:19,806 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:25:19,806 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:25:19,807 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:25:19,807 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:25:19,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:25:19,809 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:25:19,809 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:25:19,810 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-28 09:25:19,869 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:25:19,869 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:25:19,869 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:25:19,870 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:25:19,871 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:25:19,871 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:25:19,871 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:25:19,871 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 09:25:19,872 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 09:25:19,872 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 09:25:19,872 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 09:25:19,872 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 09:25:19,872 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 09:25:19,873 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:25:19,873 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:25:19,873 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:25:19,873 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:25:19,873 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 09:25:19,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 09:25:19,874 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 09:25:19,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:25:19,874 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 09:25:19,874 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:25:19,875 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 09:25:19,875 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:25:19,875 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:25:19,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:25:19,880 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:25:19,881 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:25:19,882 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 09:25:19,882 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_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a3ce217426a55eb46107f2cdf23c10dcc5d92a99768880786a980fae67c3971 [2021-10-28 09:25:20,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:25:20,194 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:25:20,197 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:25:20,199 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:25:20,200 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:25:20,201 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/termination-restricted-15/UpAndDown.c [2021-10-28 09:25:20,300 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/data/1ed2c01ab/ca37b2e29c484312bb9c56f8ac35d0bc/FLAG7dafd13ae [2021-10-28 09:25:20,702 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:25:20,702 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/sv-benchmarks/c/termination-restricted-15/UpAndDown.c [2021-10-28 09:25:20,711 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/data/1ed2c01ab/ca37b2e29c484312bb9c56f8ac35d0bc/FLAG7dafd13ae [2021-10-28 09:25:21,089 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/data/1ed2c01ab/ca37b2e29c484312bb9c56f8ac35d0bc [2021-10-28 09:25:21,091 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:25:21,093 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:25:21,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:25:21,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:25:21,116 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:25:21,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:25:21" (1/1) ... [2021-10-28 09:25:21,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b0dc6c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:25:21, skipping insertion in model container [2021-10-28 09:25:21,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:25:21" (1/1) ... [2021-10-28 09:25:21,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:25:21,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:25:21,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:25:21,302 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:25:21,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:25:21,331 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:25:21,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:25:21 WrapperNode [2021-10-28 09:25:21,332 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:25:21,333 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:25:21,333 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:25:21,333 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:25:21,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:25:21" (1/1) ... [2021-10-28 09:25:21,346 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:25:21" (1/1) ... [2021-10-28 09:25:21,362 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:25:21,364 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:25:21,365 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:25:21,365 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:25:21,372 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:25:21" (1/1) ... [2021-10-28 09:25:21,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:25:21" (1/1) ... [2021-10-28 09:25:21,373 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:25:21" (1/1) ... [2021-10-28 09:25:21,373 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:25:21" (1/1) ... [2021-10-28 09:25:21,375 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:25:21" (1/1) ... [2021-10-28 09:25:21,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:25:21" (1/1) ... [2021-10-28 09:25:21,380 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:25:21" (1/1) ... [2021-10-28 09:25:21,381 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:25:21,382 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:25:21,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:25:21,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:25:21,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:25:21" (1/1) ... [2021-10-28 09:25:21,393 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:21,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:21,441 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:21,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 09:25:21,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:25:21,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:25:21,684 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:25:21,685 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-28 09:25:21,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:25:21 BoogieIcfgContainer [2021-10-28 09:25:21,689 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:25:21,691 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 09:25:21,691 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 09:25:21,695 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 09:25:21,696 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:25:21,696 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 09:25:21" (1/3) ... [2021-10-28 09:25:21,698 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@23309cda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:25:21, skipping insertion in model container [2021-10-28 09:25:21,698 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:25:21,699 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:25:21" (2/3) ... [2021-10-28 09:25:21,699 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@23309cda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:25:21, skipping insertion in model container [2021-10-28 09:25:21,699 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:25:21,699 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:25:21" (3/3) ... [2021-10-28 09:25:21,701 INFO L389 chiAutomizerObserver]: Analyzing ICFG UpAndDown.c [2021-10-28 09:25:21,772 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 09:25:21,772 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 09:25:21,772 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 09:25:21,772 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 09:25:21,772 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 09:25:21,772 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 09:25:21,773 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 09:25:21,773 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 09:25:21,786 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 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) [2021-10-28 09:25:21,804 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-28 09:25:21,804 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:25:21,804 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:25:21,810 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 09:25:21,810 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 09:25:21,810 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 09:25:21,811 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 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) [2021-10-28 09:25:21,812 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-28 09:25:21,812 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:25:21,812 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:25:21,813 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 09:25:21,813 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 09:25:21,819 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 6#L18-1true [2021-10-28 09:25:21,820 INFO L793 eck$LassoCheckResult]: Loop: 6#L18-1true assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10#L12true assume 10 == main_~i~0;main_~up~0 := 0; 3#L12-2true assume 0 == main_~i~0;main_~up~0 := 1; 8#L15-1true assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6#L18-1true [2021-10-28 09:25:21,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:21,826 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-10-28 09:25:21,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:21,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536274444] [2021-10-28 09:25:21,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:21,838 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:21,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:21,920 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:25:21,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:21,952 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:25:21,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:21,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1234538, now seen corresponding path program 1 times [2021-10-28 09:25:21,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:21,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060830304] [2021-10-28 09:25:21,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:21,957 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:21,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:22,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:25:22,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:25:22,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060830304] [2021-10-28 09:25:22,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060830304] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:25:22,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:25:22,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:25:22,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099848114] [2021-10-28 09:25:22,083 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:25:22,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:25:22,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:25:22,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:25:22,117 INFO L87 Difference]: Start difference. First operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-28 09:25:22,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:25:22,178 INFO L93 Difference]: Finished difference Result 17 states and 22 transitions. [2021-10-28 09:25:22,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:25:22,180 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 22 transitions. [2021-10-28 09:25:22,182 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-10-28 09:25:22,186 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 9 states and 14 transitions. [2021-10-28 09:25:22,188 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-10-28 09:25:22,188 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2021-10-28 09:25:22,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 14 transitions. [2021-10-28 09:25:22,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:25:22,189 INFO L681 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2021-10-28 09:25:22,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 14 transitions. [2021-10-28 09:25:22,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-28 09:25:22,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 states have internal predecessors, (14), 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) [2021-10-28 09:25:22,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 14 transitions. [2021-10-28 09:25:22,215 INFO L704 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2021-10-28 09:25:22,215 INFO L587 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2021-10-28 09:25:22,215 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 09:25:22,215 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 14 transitions. [2021-10-28 09:25:22,216 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-10-28 09:25:22,216 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:25:22,216 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:25:22,217 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 09:25:22,217 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 09:25:22,217 INFO L791 eck$LassoCheckResult]: Stem: 37#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 38#L18-1 [2021-10-28 09:25:22,217 INFO L793 eck$LassoCheckResult]: Loop: 38#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 43#L12 assume 10 == main_~i~0;main_~up~0 := 0; 35#L12-2 assume !(0 == main_~i~0); 36#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 38#L18-1 [2021-10-28 09:25:22,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:22,218 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2021-10-28 09:25:22,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:22,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140521171] [2021-10-28 09:25:22,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:22,219 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:22,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:22,223 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:25:22,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:22,227 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:25:22,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:22,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1234602, now seen corresponding path program 1 times [2021-10-28 09:25:22,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:22,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818949208] [2021-10-28 09:25:22,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:22,229 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:22,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:22,253 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:25:22,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:22,259 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:25:22,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:22,259 INFO L85 PathProgramCache]: Analyzing trace with hash 29863753, now seen corresponding path program 1 times [2021-10-28 09:25:22,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:22,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082598075] [2021-10-28 09:25:22,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:22,280 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:22,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:22,287 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:25:22,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:22,296 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:25:22,401 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:25:22,402 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:25:22,402 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:25:22,402 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:25:22,402 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:25:22,403 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:22,403 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:25:22,403 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:25:22,403 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration2_Loop [2021-10-28 09:25:22,403 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:25:22,403 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:25:22,421 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:22,428 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:22,432 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:22,436 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:22,499 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:25:22,500 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:25:22,502 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:22,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:22,504 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:22,509 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:25:22,509 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:22,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-28 09:25:22,545 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:25:22,545 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:25:22,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:22,582 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:22,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:22,584 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:22,590 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:25:22,590 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:22,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-28 09:25:22,620 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:25:22,620 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:25:22,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:22,657 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:22,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:22,659 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:22,665 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:25:22,665 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:22,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-28 09:25:22,685 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:25:22,685 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=0} Honda state: {ULTIMATE.start_main_~up~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:25:22,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:22,721 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:22,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:22,723 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:22,728 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:25:22,729 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:22,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-28 09:25:22,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:22,793 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:22,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:22,796 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:22,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-28 09:25:22,802 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:25:22,802 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:22,836 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:25:22,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:22,865 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:25:22,865 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:25:22,865 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:25:22,865 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:25:22,865 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:25:22,865 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:22,865 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:25:22,865 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:25:22,865 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration2_Loop [2021-10-28 09:25:22,866 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:25:22,866 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:25:22,868 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:22,872 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:22,876 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:22,879 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:22,935 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:25:22,940 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:25:22,942 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:22,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:22,957 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:22,960 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 [2021-10-28 09:25:22,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-28 09:25:22,970 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:25:22,970 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:25:22,970 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:25:22,970 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:25:22,979 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:25:22,979 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:25:23,006 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:25:23,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:23,039 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:23,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:23,041 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:23,049 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 [2021-10-28 09:25:23,058 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:25:23,058 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:25:23,058 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:25:23,059 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:25:23,068 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:25:23,070 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:25:23,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-28 09:25:23,085 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:25:23,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:23,115 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:23,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:23,117 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:23,125 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 [2021-10-28 09:25:23,136 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:25:23,136 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:25:23,136 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:25:23,136 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:25:23,137 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:25:23,139 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:25:23,139 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:25:23,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-28 09:25:23,154 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:25:23,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:23,175 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:23,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:23,178 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:23,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-28 09:25:23,183 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 [2021-10-28 09:25:23,190 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:25:23,190 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:25:23,190 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:25:23,191 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:25:23,191 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:25:23,192 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:25:23,192 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:25:23,213 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:25:23,219 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 09:25:23,219 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 09:25:23,221 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:23,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:23,222 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:23,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-28 09:25:23,248 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:25:23,249 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:25:23,249 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:25:23,249 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-28 09:25:23,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:23,274 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:25:23,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:23,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:23,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:25:23,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:23,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:23,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:25:23,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:23,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:25:23,397 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 09:25:23,398 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 14 transitions. cyclomatic complexity: 6 Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:25:23,464 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 14 transitions. cyclomatic complexity: 6. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 24 states and 37 transitions. Complement of second has 7 states. [2021-10-28 09:25:23,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 09:25:23,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:25:23,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2021-10-28 09:25:23,469 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 1 letters. Loop has 4 letters. [2021-10-28 09:25:23,470 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:25:23,470 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 5 letters. Loop has 4 letters. [2021-10-28 09:25:23,471 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:25:23,471 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 1 letters. Loop has 8 letters. [2021-10-28 09:25:23,472 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:25:23,472 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 37 transitions. [2021-10-28 09:25:23,477 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2021-10-28 09:25:23,481 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 24 states and 37 transitions. [2021-10-28 09:25:23,481 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2021-10-28 09:25:23,482 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-10-28 09:25:23,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 37 transitions. [2021-10-28 09:25:23,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:25:23,482 INFO L681 BuchiCegarLoop]: Abstraction has 24 states and 37 transitions. [2021-10-28 09:25:23,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 37 transitions. [2021-10-28 09:25:23,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2021-10-28 09:25:23,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 22 states have internal predecessors, (35), 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) [2021-10-28 09:25:23,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 35 transitions. [2021-10-28 09:25:23,486 INFO L704 BuchiCegarLoop]: Abstraction has 23 states and 35 transitions. [2021-10-28 09:25:23,486 INFO L587 BuchiCegarLoop]: Abstraction has 23 states and 35 transitions. [2021-10-28 09:25:23,486 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 09:25:23,486 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 35 transitions. [2021-10-28 09:25:23,487 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2021-10-28 09:25:23,487 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:25:23,487 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:25:23,487 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:25:23,488 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 09:25:23,488 INFO L791 eck$LassoCheckResult]: Stem: 115#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 116#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 112#L12 [2021-10-28 09:25:23,488 INFO L793 eck$LassoCheckResult]: Loop: 112#L12 assume !(10 == main_~i~0); 119#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 122#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 111#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 112#L12 [2021-10-28 09:25:23,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:23,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2021-10-28 09:25:23,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:23,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169901202] [2021-10-28 09:25:23,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:23,489 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:23,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:23,494 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:25:23,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:23,498 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:25:23,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:23,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1389492, now seen corresponding path program 1 times [2021-10-28 09:25:23,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:23,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615562440] [2021-10-28 09:25:23,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:23,499 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:23,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:23,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:25:23,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:25:23,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615562440] [2021-10-28 09:25:23,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615562440] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:25:23,517 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:25:23,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:25:23,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683746239] [2021-10-28 09:25:23,518 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:25:23,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:25:23,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:25:23,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:25:23,519 INFO L87 Difference]: Start difference. First operand 23 states and 35 transitions. cyclomatic complexity: 15 Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-28 09:25:23,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:25:23,533 INFO L93 Difference]: Finished difference Result 31 states and 44 transitions. [2021-10-28 09:25:23,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:25:23,533 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 44 transitions. [2021-10-28 09:25:23,535 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 18 [2021-10-28 09:25:23,536 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 30 states and 43 transitions. [2021-10-28 09:25:23,536 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2021-10-28 09:25:23,536 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2021-10-28 09:25:23,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 43 transitions. [2021-10-28 09:25:23,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:25:23,537 INFO L681 BuchiCegarLoop]: Abstraction has 30 states and 43 transitions. [2021-10-28 09:25:23,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 43 transitions. [2021-10-28 09:25:23,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2021-10-28 09:25:23,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 26 states have internal predecessors, (40), 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) [2021-10-28 09:25:23,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 40 transitions. [2021-10-28 09:25:23,541 INFO L704 BuchiCegarLoop]: Abstraction has 27 states and 40 transitions. [2021-10-28 09:25:23,541 INFO L587 BuchiCegarLoop]: Abstraction has 27 states and 40 transitions. [2021-10-28 09:25:23,541 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 09:25:23,541 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 40 transitions. [2021-10-28 09:25:23,542 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 18 [2021-10-28 09:25:23,542 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:25:23,542 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:25:23,543 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:25:23,543 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 09:25:23,543 INFO L791 eck$LassoCheckResult]: Stem: 171#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 172#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 179#L12 [2021-10-28 09:25:23,543 INFO L793 eck$LassoCheckResult]: Loop: 179#L12 assume !(10 == main_~i~0); 180#L12-2 assume !(0 == main_~i~0); 188#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 187#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 179#L12 [2021-10-28 09:25:23,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:23,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 2 times [2021-10-28 09:25:23,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:23,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944194353] [2021-10-28 09:25:23,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:23,554 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:23,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:23,565 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:25:23,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:23,568 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:25:23,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:23,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1391414, now seen corresponding path program 1 times [2021-10-28 09:25:23,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:23,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059831646] [2021-10-28 09:25:23,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:23,570 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:23,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:23,575 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:25:23,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:23,598 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:25:23,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:23,599 INFO L85 PathProgramCache]: Analyzing trace with hash 925835935, now seen corresponding path program 1 times [2021-10-28 09:25:23,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:23,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083423929] [2021-10-28 09:25:23,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:23,616 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:23,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:23,622 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:25:23,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:23,640 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:25:23,697 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:25:23,697 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:25:23,698 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:25:23,698 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:25:23,698 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:25:23,698 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:23,698 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:25:23,698 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:25:23,698 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration4_Loop [2021-10-28 09:25:23,698 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:25:23,698 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:25:23,700 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:23,704 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:23,708 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:23,713 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:23,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:23,829 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:25:23,829 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:25:23,830 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:23,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:23,836 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:23,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-28 09:25:23,842 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:25:23,842 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:23,868 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:25:23,868 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:25:23,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:23,902 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:23,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:23,904 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:23,910 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:25:23,910 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:23,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-28 09:25:23,932 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:25:23,932 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:25:23,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:23,962 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:23,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:23,963 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:23,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-28 09:25:23,964 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:25:23,964 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:23,978 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:25:23,979 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=4} Honda state: {ULTIMATE.start_main_~up~0=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:25:24,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:24,006 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:24,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:24,007 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:24,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-28 09:25:24,008 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:25:24,009 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:24,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:24,081 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:24,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:24,082 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:24,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-28 09:25:24,083 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:25:24,084 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:24,213 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:25:24,219 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2021-10-28 09:25:24,219 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:25:24,219 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:25:24,219 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:25:24,219 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:25:24,219 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:25:24,219 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:24,219 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:25:24,219 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:25:24,219 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration4_Loop [2021-10-28 09:25:24,220 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:25:24,220 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:25:24,221 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:24,235 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:24,239 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:24,242 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:24,343 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:25:24,343 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:25:24,344 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:24,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:24,348 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:24,354 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 [2021-10-28 09:25:24,364 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:25:24,364 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:25:24,364 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:25:24,364 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:25:24,370 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:25:24,370 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:25:24,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-28 09:25:24,391 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:25:24,427 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2021-10-28 09:25:24,427 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:24,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:24,429 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:24,432 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 [2021-10-28 09:25:24,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-28 09:25:24,442 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:25:24,442 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:25:24,442 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:25:24,442 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-28 09:25:24,442 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:25:24,443 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-28 09:25:24,443 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:25:24,458 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:25:24,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:24,491 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:24,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:24,492 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:24,500 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 [2021-10-28 09:25:24,509 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:25:24,509 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:25:24,509 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:25:24,510 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:25:24,524 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:25:24,524 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:25:24,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-28 09:25:24,535 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:25:24,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:24,574 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:24,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:24,575 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:24,586 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 [2021-10-28 09:25:24,600 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:25:24,601 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:25:24,601 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:25:24,601 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-28 09:25:24,601 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:25:24,603 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-28 09:25:24,603 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:25:24,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-28 09:25:24,619 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:25:24,623 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 09:25:24,623 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 09:25:24,623 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:24,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:24,624 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:24,633 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:25:24,633 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:25:24,633 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:25:24,634 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-28 09:25:24,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-28 09:25:24,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:24,671 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:25:24,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:24,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:24,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:25:24,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:24,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:24,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:25:24,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:24,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:25:24,757 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 09:25:24,757 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 40 transitions. cyclomatic complexity: 16 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) [2021-10-28 09:25:24,783 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 40 transitions. cyclomatic complexity: 16. 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 43 states and 59 transitions. Complement of second has 7 states. [2021-10-28 09:25:24,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 09:25:24,784 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) [2021-10-28 09:25:24,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2021-10-28 09:25:24,784 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 4 letters. [2021-10-28 09:25:24,784 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:25:24,785 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2021-10-28 09:25:24,785 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:25:24,785 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 8 letters. [2021-10-28 09:25:24,785 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:25:24,785 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 59 transitions. [2021-10-28 09:25:24,788 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2021-10-28 09:25:24,789 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 33 states and 48 transitions. [2021-10-28 09:25:24,789 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2021-10-28 09:25:24,789 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 22 [2021-10-28 09:25:24,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 48 transitions. [2021-10-28 09:25:24,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:25:24,790 INFO L681 BuchiCegarLoop]: Abstraction has 33 states and 48 transitions. [2021-10-28 09:25:24,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states and 48 transitions. [2021-10-28 09:25:24,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2021-10-28 09:25:24,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 28 states have (on average 1.5) internal successors, (42), 27 states have internal predecessors, (42), 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) [2021-10-28 09:25:24,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 42 transitions. [2021-10-28 09:25:24,794 INFO L704 BuchiCegarLoop]: Abstraction has 28 states and 42 transitions. [2021-10-28 09:25:24,794 INFO L587 BuchiCegarLoop]: Abstraction has 28 states and 42 transitions. [2021-10-28 09:25:24,794 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-28 09:25:24,794 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 42 transitions. [2021-10-28 09:25:24,795 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2021-10-28 09:25:24,795 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:25:24,795 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:25:24,795 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-28 09:25:24,795 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 09:25:24,796 INFO L791 eck$LassoCheckResult]: Stem: 287#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 288#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 296#L12 assume 10 == main_~i~0;main_~up~0 := 0; 279#L12-2 [2021-10-28 09:25:24,796 INFO L793 eck$LassoCheckResult]: Loop: 279#L12-2 assume !(0 == main_~i~0); 280#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 283#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 284#L12 assume !(10 == main_~i~0); 279#L12-2 [2021-10-28 09:25:24,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:24,796 INFO L85 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2021-10-28 09:25:24,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:24,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772596736] [2021-10-28 09:25:24,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:24,797 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:24,801 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:25:24,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:24,805 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:25:24,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:24,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1573482, now seen corresponding path program 1 times [2021-10-28 09:25:24,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:24,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45407130] [2021-10-28 09:25:24,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:24,806 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:24,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:24,810 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:25:24,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:24,814 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:25:24,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:24,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1365706036, now seen corresponding path program 1 times [2021-10-28 09:25:24,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:24,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087486246] [2021-10-28 09:25:24,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:24,815 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:24,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:24,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:25:24,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:25:24,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087486246] [2021-10-28 09:25:24,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087486246] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:25:24,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:25:24,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:25:24,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650637920] [2021-10-28 09:25:24,868 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:25:24,868 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:25:24,868 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:25:24,868 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:25:24,868 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:25:24,868 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:24,868 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:25:24,869 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:25:24,869 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration5_Loop [2021-10-28 09:25:24,869 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:25:24,869 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:25:24,873 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:24,875 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:24,878 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:24,887 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:24,994 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:25:24,994 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:25:24,995 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:24,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:24,996 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:25,001 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:25:25,001 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:25,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-10-28 09:25:25,011 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:25:25,011 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=1} Honda state: {ULTIMATE.start_main_~up~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:25:25,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:25,031 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:25,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:25,033 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:25,036 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:25:25,036 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:25,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-28 09:25:25,050 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:25:25,050 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:25:25,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:25,073 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:25,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:25,074 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:25,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-10-28 09:25:25,076 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:25:25,076 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:25,104 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2021-10-28 09:25:25,104 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:25,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:25,105 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:25,112 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:25:25,112 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:25,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-28 09:25:25,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:25,264 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:25:25,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:25,267 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:25:25,267 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:25:25,267 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:25:25,267 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:25:25,267 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:25:25,268 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:25,268 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:25:25,268 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:25:25,268 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration5_Loop [2021-10-28 09:25:25,268 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:25:25,268 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:25:25,269 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:25,272 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:25,282 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:25,285 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:25,384 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:25:25,385 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:25:25,385 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:25,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:25,386 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:25,393 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 [2021-10-28 09:25:25,401 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:25:25,402 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:25:25,402 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:25:25,402 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:25:25,402 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:25:25,403 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:25:25,403 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:25:25,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-28 09:25:25,412 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:25:25,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2021-10-28 09:25:25,438 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:25,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:25,438 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:25,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-10-28 09:25:25,440 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 [2021-10-28 09:25:25,447 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:25:25,447 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:25:25,447 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:25:25,447 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-28 09:25:25,447 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:25:25,449 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-28 09:25:25,449 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:25:25,475 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:25:25,488 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 09:25:25,489 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 09:25:25,489 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:25,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:25,491 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:25,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-28 09:25:25,495 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:25:25,495 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:25:25,495 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:25:25,495 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 17 Supporting invariants [] [2021-10-28 09:25:25,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2021-10-28 09:25:25,521 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:25:25,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:25,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:25,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:25:25,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:25,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:25,552 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:25:25,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:25,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:25:25,593 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 [2021-10-28 09:25:25,593 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 42 transitions. cyclomatic complexity: 17 Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:25:25,647 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 42 transitions. cyclomatic complexity: 17. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 78 states and 116 transitions. Complement of second has 9 states. [2021-10-28 09:25:25,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-10-28 09:25:25,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:25:25,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2021-10-28 09:25:25,648 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 3 letters. Loop has 4 letters. [2021-10-28 09:25:25,648 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:25:25,648 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 7 letters. Loop has 4 letters. [2021-10-28 09:25:25,649 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:25:25,649 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 3 letters. Loop has 8 letters. [2021-10-28 09:25:25,649 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:25:25,649 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 78 states and 116 transitions. [2021-10-28 09:25:25,652 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 31 [2021-10-28 09:25:25,653 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 78 states to 77 states and 115 transitions. [2021-10-28 09:25:25,653 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 37 [2021-10-28 09:25:25,654 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2021-10-28 09:25:25,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 115 transitions. [2021-10-28 09:25:25,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:25:25,654 INFO L681 BuchiCegarLoop]: Abstraction has 77 states and 115 transitions. [2021-10-28 09:25:25,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states and 115 transitions. [2021-10-28 09:25:25,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 63. [2021-10-28 09:25:25,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 63 states have (on average 1.5555555555555556) internal successors, (98), 62 states have internal predecessors, (98), 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) [2021-10-28 09:25:25,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 98 transitions. [2021-10-28 09:25:25,660 INFO L704 BuchiCegarLoop]: Abstraction has 63 states and 98 transitions. [2021-10-28 09:25:25,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:25:25,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:25:25,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:25:25,661 INFO L87 Difference]: Start difference. First operand 63 states and 98 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:25:25,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:25:25,667 INFO L93 Difference]: Finished difference Result 44 states and 60 transitions. [2021-10-28 09:25:25,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:25:25,668 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 60 transitions. [2021-10-28 09:25:25,669 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 14 [2021-10-28 09:25:25,670 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 37 states and 50 transitions. [2021-10-28 09:25:25,670 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2021-10-28 09:25:25,670 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 22 [2021-10-28 09:25:25,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 50 transitions. [2021-10-28 09:25:25,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:25:25,670 INFO L681 BuchiCegarLoop]: Abstraction has 37 states and 50 transitions. [2021-10-28 09:25:25,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 50 transitions. [2021-10-28 09:25:25,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 24. [2021-10-28 09:25:25,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 24 states have (on average 1.375) internal successors, (33), 23 states have internal predecessors, (33), 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) [2021-10-28 09:25:25,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 33 transitions. [2021-10-28 09:25:25,678 INFO L704 BuchiCegarLoop]: Abstraction has 24 states and 33 transitions. [2021-10-28 09:25:25,678 INFO L587 BuchiCegarLoop]: Abstraction has 24 states and 33 transitions. [2021-10-28 09:25:25,678 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-28 09:25:25,679 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 33 transitions. [2021-10-28 09:25:25,679 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-10-28 09:25:25,679 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:25:25,679 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:25:25,680 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-28 09:25:25,680 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 09:25:25,680 INFO L791 eck$LassoCheckResult]: Stem: 550#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 551#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 554#L12 assume !(10 == main_~i~0); 553#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 559#L15-1 [2021-10-28 09:25:25,680 INFO L793 eck$LassoCheckResult]: Loop: 559#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 560#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 565#L12 assume !(10 == main_~i~0); 564#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 559#L15-1 [2021-10-28 09:25:25,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:25,681 INFO L85 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 1 times [2021-10-28 09:25:25,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:25,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455390373] [2021-10-28 09:25:25,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:25,681 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:25,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:25,691 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:25:25,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:25,700 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:25:25,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:25,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1678390, now seen corresponding path program 1 times [2021-10-28 09:25:25,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:25,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651735775] [2021-10-28 09:25:25,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:25,704 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:25,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:25,710 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:25:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:25,720 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:25:25,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:25,721 INFO L85 PathProgramCache]: Analyzing trace with hash 668197123, now seen corresponding path program 1 times [2021-10-28 09:25:25,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:25,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870783879] [2021-10-28 09:25:25,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:25,722 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:25,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:25,748 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:25:25,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:25:25,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870783879] [2021-10-28 09:25:25,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870783879] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:25:25,749 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:25:25,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:25:25,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307267621] [2021-10-28 09:25:25,782 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:25:25,782 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:25:25,782 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:25:25,783 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:25:25,783 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:25:25,783 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:25,783 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:25:25,783 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:25:25,783 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration6_Loop [2021-10-28 09:25:25,783 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:25:25,783 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:25:25,786 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:25,791 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:25,793 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:25,796 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:25,842 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:25:25,842 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:25:25,843 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:25,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:25,848 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:25,852 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:25:25,852 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:25,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-10-28 09:25:25,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:25,907 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:25,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:25,908 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:25,911 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:25:25,911 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:25,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-10-28 09:25:25,993 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:25:26,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:26,005 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:25:26,006 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:25:26,006 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:25:26,006 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:25:26,006 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:25:26,006 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:26,006 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:25:26,006 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:25:26,006 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration6_Loop [2021-10-28 09:25:26,006 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:25:26,006 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:25:26,007 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:26,013 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:26,015 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:26,019 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:26,071 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:25:26,072 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:25:26,072 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:26,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:26,073 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:26,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-10-28 09:25:26,075 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 [2021-10-28 09:25:26,083 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:25:26,083 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:25:26,083 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:25:26,083 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:25:26,083 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:25:26,084 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:25:26,084 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:25:26,095 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:25:26,100 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 09:25:26,100 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 09:25:26,100 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:26,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:26,104 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:26,108 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:25:26,108 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:25:26,109 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:25:26,109 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-28 09:25:26,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-10-28 09:25:26,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:26,142 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:25:26,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:26,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:26,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:25:26,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:26,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:25:26,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:26,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:25:26,194 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 09:25:26,194 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 33 transitions. cyclomatic complexity: 12 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-10-28 09:25:26,231 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 33 transitions. cyclomatic complexity: 12. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 51 states and 68 transitions. Complement of second has 7 states. [2021-10-28 09:25:26,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 09:25:26,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-10-28 09:25:26,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2021-10-28 09:25:26,232 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 4 letters. Loop has 4 letters. [2021-10-28 09:25:26,232 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:25:26,233 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 8 letters. Loop has 4 letters. [2021-10-28 09:25:26,233 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:25:26,233 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 4 letters. Loop has 8 letters. [2021-10-28 09:25:26,233 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:25:26,233 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 68 transitions. [2021-10-28 09:25:26,235 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 19 [2021-10-28 09:25:26,236 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 49 states and 65 transitions. [2021-10-28 09:25:26,236 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2021-10-28 09:25:26,236 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2021-10-28 09:25:26,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 65 transitions. [2021-10-28 09:25:26,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:25:26,237 INFO L681 BuchiCegarLoop]: Abstraction has 49 states and 65 transitions. [2021-10-28 09:25:26,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 65 transitions. [2021-10-28 09:25:26,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 44. [2021-10-28 09:25:26,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 44 states have (on average 1.3636363636363635) internal successors, (60), 43 states have internal predecessors, (60), 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) [2021-10-28 09:25:26,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 60 transitions. [2021-10-28 09:25:26,241 INFO L704 BuchiCegarLoop]: Abstraction has 44 states and 60 transitions. [2021-10-28 09:25:26,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:25:26,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:25:26,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:25:26,242 INFO L87 Difference]: Start difference. First operand 44 states and 60 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-28 09:25:26,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:25:26,270 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2021-10-28 09:25:26,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:25:26,271 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 59 transitions. [2021-10-28 09:25:26,272 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-28 09:25:26,274 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 36 states and 47 transitions. [2021-10-28 09:25:26,275 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2021-10-28 09:25:26,275 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2021-10-28 09:25:26,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 47 transitions. [2021-10-28 09:25:26,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:25:26,278 INFO L681 BuchiCegarLoop]: Abstraction has 36 states and 47 transitions. [2021-10-28 09:25:26,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 47 transitions. [2021-10-28 09:25:26,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 24. [2021-10-28 09:25:26,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 23 states have internal predecessors, (32), 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) [2021-10-28 09:25:26,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 32 transitions. [2021-10-28 09:25:26,280 INFO L704 BuchiCegarLoop]: Abstraction has 24 states and 32 transitions. [2021-10-28 09:25:26,281 INFO L587 BuchiCegarLoop]: Abstraction has 24 states and 32 transitions. [2021-10-28 09:25:26,281 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-28 09:25:26,281 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 32 transitions. [2021-10-28 09:25:26,281 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-10-28 09:25:26,281 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:25:26,281 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:25:26,282 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-28 09:25:26,282 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 09:25:26,282 INFO L791 eck$LassoCheckResult]: Stem: 761#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 762#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 774#L12 assume !(10 == main_~i~0); 772#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 758#L15-1 [2021-10-28 09:25:26,282 INFO L793 eck$LassoCheckResult]: Loop: 758#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 779#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 769#L12 assume !(10 == main_~i~0); 757#L12-2 assume !(0 == main_~i~0); 758#L15-1 [2021-10-28 09:25:26,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:26,283 INFO L85 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 2 times [2021-10-28 09:25:26,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:26,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357582888] [2021-10-28 09:25:26,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:26,283 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:26,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:26,298 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:25:26,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:26,301 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:25:26,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:26,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1678392, now seen corresponding path program 2 times [2021-10-28 09:25:26,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:26,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117352288] [2021-10-28 09:25:26,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:26,337 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:26,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:26,341 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:25:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:26,348 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:25:26,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:26,349 INFO L85 PathProgramCache]: Analyzing trace with hash 668197125, now seen corresponding path program 1 times [2021-10-28 09:25:26,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:26,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793617499] [2021-10-28 09:25:26,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:26,350 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:26,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:26,362 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:25:26,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:26,367 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:25:26,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:26,415 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:25:26,415 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:25:26,415 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:25:26,415 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:25:26,415 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:25:26,415 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:26,415 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:25:26,416 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:25:26,416 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration7_Loop [2021-10-28 09:25:26,416 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:25:26,416 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:25:26,417 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:26,419 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:26,422 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:26,424 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:26,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:26,489 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:25:26,489 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:25:26,490 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:26,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:26,491 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:26,501 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:25:26,501 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:26,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-10-28 09:25:26,524 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:25:26,524 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=1} Honda state: {ULTIMATE.start_main_~up~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:25:26,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:26,557 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:26,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:26,558 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:26,560 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:25:26,560 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:26,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-10-28 09:25:26,581 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:25:26,581 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_9=1} Honda state: {v_rep~unnamed0~0~true_9=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:25:26,610 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2021-10-28 09:25:26,610 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:26,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:26,613 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:26,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-10-28 09:25:26,616 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:25:26,616 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:26,629 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:25:26,629 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_9=0} Honda state: {v_rep~unnamed0~0~false_9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:25:26,649 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2021-10-28 09:25:26,649 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:26,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:26,650 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:26,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-10-28 09:25:26,652 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:25:26,655 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:26,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:26,683 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:26,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:26,684 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:26,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-10-28 09:25:26,685 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:25:26,686 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:26,810 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:25:26,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2021-10-28 09:25:26,813 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:25:26,813 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:25:26,813 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:25:26,813 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:25:26,813 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:25:26,813 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:26,813 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:25:26,813 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:25:26,813 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration7_Loop [2021-10-28 09:25:26,813 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:25:26,813 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:25:26,814 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:26,825 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:26,828 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:26,831 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:26,899 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:25:26,899 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:25:26,899 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:26,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:26,900 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:26,904 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 [2021-10-28 09:25:26,913 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:25:26,913 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:25:26,913 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:25:26,913 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:25:26,917 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:25:26,917 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:25:26,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-10-28 09:25:26,927 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:25:26,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:26,954 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:26,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:26,955 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:26,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-10-28 09:25:26,957 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 [2021-10-28 09:25:26,964 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:25:26,964 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:25:26,964 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:25:26,964 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:25:26,964 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:25:26,965 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:25:26,965 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:25:26,971 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:25:26,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:26,992 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:26,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:26,992 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:26,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-10-28 09:25:26,995 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 [2021-10-28 09:25:27,002 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:25:27,002 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:25:27,002 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:25:27,002 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:25:27,003 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:25:27,004 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:25:27,039 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:25:27,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:27,061 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:27,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:27,062 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:27,070 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:25:27,079 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:25:27,079 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:25:27,079 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:25:27,079 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:25:27,079 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:25:27,080 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:25:27,080 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:25:27,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-10-28 09:25:27,095 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:25:27,098 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 09:25:27,098 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 09:25:27,098 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:27,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:27,099 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:27,101 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:25:27,101 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:25:27,101 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:25:27,102 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 17 Supporting invariants [] [2021-10-28 09:25:27,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-10-28 09:25:27,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:27,137 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:25:27,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:27,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:27,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:25:27,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:27,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:27,163 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:25:27,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:27,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:25:27,223 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2021-10-28 09:25:27,224 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 32 transitions. cyclomatic complexity: 11 Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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) [2021-10-28 09:25:27,271 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 32 transitions. cyclomatic complexity: 11. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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 48 states and 62 transitions. Complement of second has 9 states. [2021-10-28 09:25:27,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-10-28 09:25:27,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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) [2021-10-28 09:25:27,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2021-10-28 09:25:27,272 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 4 letters. Loop has 4 letters. [2021-10-28 09:25:27,273 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:25:27,273 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 8 letters. Loop has 4 letters. [2021-10-28 09:25:27,273 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:25:27,273 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 4 letters. Loop has 8 letters. [2021-10-28 09:25:27,274 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:25:27,274 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 62 transitions. [2021-10-28 09:25:27,275 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 17 [2021-10-28 09:25:27,275 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 46 states and 59 transitions. [2021-10-28 09:25:27,276 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2021-10-28 09:25:27,276 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2021-10-28 09:25:27,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 59 transitions. [2021-10-28 09:25:27,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:25:27,276 INFO L681 BuchiCegarLoop]: Abstraction has 46 states and 59 transitions. [2021-10-28 09:25:27,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states and 59 transitions. [2021-10-28 09:25:27,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2021-10-28 09:25:27,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 42 states have (on average 1.3095238095238095) internal successors, (55), 41 states have internal predecessors, (55), 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) [2021-10-28 09:25:27,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 55 transitions. [2021-10-28 09:25:27,284 INFO L704 BuchiCegarLoop]: Abstraction has 42 states and 55 transitions. [2021-10-28 09:25:27,284 INFO L587 BuchiCegarLoop]: Abstraction has 42 states and 55 transitions. [2021-10-28 09:25:27,284 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-28 09:25:27,284 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 42 states and 55 transitions. [2021-10-28 09:25:27,285 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 17 [2021-10-28 09:25:27,285 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:25:27,285 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:25:27,285 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-10-28 09:25:27,285 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2021-10-28 09:25:27,286 INFO L791 eck$LassoCheckResult]: Stem: 890#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 891#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 897#L12 assume !(10 == main_~i~0); 902#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 898#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 886#L18-1 [2021-10-28 09:25:27,286 INFO L793 eck$LassoCheckResult]: Loop: 886#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 887#L12 assume 10 == main_~i~0;main_~up~0 := 0; 895#L12-2 assume !(0 == main_~i~0); 892#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 893#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 922#L12 assume !(10 == main_~i~0); 917#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 905#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 886#L18-1 [2021-10-28 09:25:27,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:27,286 INFO L85 PathProgramCache]: Analyzing trace with hash 29865611, now seen corresponding path program 2 times [2021-10-28 09:25:27,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:27,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673594652] [2021-10-28 09:25:27,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:27,287 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:27,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:27,291 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:25:27,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:27,294 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:25:27,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:27,295 INFO L85 PathProgramCache]: Analyzing trace with hash 2014853141, now seen corresponding path program 1 times [2021-10-28 09:25:27,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:27,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554171072] [2021-10-28 09:25:27,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:27,295 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:27,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:27,347 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:25:27,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:25:27,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554171072] [2021-10-28 09:25:27,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554171072] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:27,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763621009] [2021-10-28 09:25:27,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:27,348 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:25:27,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:27,349 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:25:27,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-10-28 09:25:27,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:27,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 09:25:27,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:27,414 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:25:27,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763621009] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:27,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:25:27,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-10-28 09:25:27,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134203461] [2021-10-28 09:25:27,416 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:25:27,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:25:27,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:25:27,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:25:27,417 INFO L87 Difference]: Start difference. First operand 42 states and 55 transitions. cyclomatic complexity: 18 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-28 09:25:27,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:25:27,440 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2021-10-28 09:25:27,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:25:27,443 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 54 states and 67 transitions. [2021-10-28 09:25:27,444 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2021-10-28 09:25:27,445 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 54 states to 48 states and 61 transitions. [2021-10-28 09:25:27,445 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2021-10-28 09:25:27,446 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2021-10-28 09:25:27,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 61 transitions. [2021-10-28 09:25:27,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:25:27,446 INFO L681 BuchiCegarLoop]: Abstraction has 48 states and 61 transitions. [2021-10-28 09:25:27,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 61 transitions. [2021-10-28 09:25:27,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 37. [2021-10-28 09:25:27,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 36 states have internal predecessors, (48), 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) [2021-10-28 09:25:27,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2021-10-28 09:25:27,449 INFO L704 BuchiCegarLoop]: Abstraction has 37 states and 48 transitions. [2021-10-28 09:25:27,449 INFO L587 BuchiCegarLoop]: Abstraction has 37 states and 48 transitions. [2021-10-28 09:25:27,449 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-10-28 09:25:27,449 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 37 states and 48 transitions. [2021-10-28 09:25:27,450 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2021-10-28 09:25:27,450 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:25:27,450 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:25:27,450 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2021-10-28 09:25:27,450 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 09:25:27,451 INFO L791 eck$LassoCheckResult]: Stem: 1014#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 1015#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1027#L12 assume !(10 == main_~i~0); 1024#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 1021#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1010#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1011#L12 assume 10 == main_~i~0;main_~up~0 := 0; 1019#L12-2 [2021-10-28 09:25:27,451 INFO L793 eck$LassoCheckResult]: Loop: 1019#L12-2 assume !(0 == main_~i~0); 1016#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1017#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1042#L12 assume 10 == main_~i~0;main_~up~0 := 0; 1019#L12-2 [2021-10-28 09:25:27,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:27,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1363918578, now seen corresponding path program 1 times [2021-10-28 09:25:27,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:27,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462470055] [2021-10-28 09:25:27,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:27,452 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:27,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:27,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:25:27,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:25:27,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462470055] [2021-10-28 09:25:27,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462470055] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:25:27,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:25:27,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:25:27,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838421864] [2021-10-28 09:25:27,470 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:25:27,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:27,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1575402, now seen corresponding path program 2 times [2021-10-28 09:25:27,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:27,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654469399] [2021-10-28 09:25:27,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:27,471 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:27,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:27,474 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:25:27,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:27,477 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:25:27,502 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:25:27,502 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:25:27,502 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:25:27,502 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:25:27,503 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:25:27,503 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:27,503 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:25:27,503 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:25:27,503 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration9_Loop [2021-10-28 09:25:27,503 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:25:27,503 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:25:27,504 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:27,507 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:27,509 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:27,513 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:27,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:27,592 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:25:27,592 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:25:27,592 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:27,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:27,593 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:27,602 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:25:27,602 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:27,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-10-28 09:25:27,624 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:25:27,624 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:25:27,647 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2021-10-28 09:25:27,647 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:27,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:27,648 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:27,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-10-28 09:25:27,650 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:25:27,652 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:27,665 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:25:27,665 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:25:27,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:27,687 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:27,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:27,688 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:27,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-10-28 09:25:27,692 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:25:27,692 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:27,705 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:25:27,705 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=0} Honda state: {ULTIMATE.start_main_~up~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:25:27,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:27,725 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:27,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:27,725 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:27,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-10-28 09:25:27,727 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:25:27,727 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:27,754 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2021-10-28 09:25:27,755 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:27,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:27,755 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:27,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-10-28 09:25:27,757 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:25:27,757 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:27,857 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:25:27,860 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2021-10-28 09:25:27,860 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:25:27,860 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:25:27,860 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:25:27,860 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:25:27,860 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:25:27,860 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:27,860 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:25:27,860 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:25:27,860 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration9_Loop [2021-10-28 09:25:27,860 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:25:27,861 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:25:27,861 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:27,864 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:27,867 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:27,870 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:27,932 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:25:27,932 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:25:27,932 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:27,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:27,933 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:27,940 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 [2021-10-28 09:25:27,949 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:25:27,949 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:25:27,950 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:25:27,950 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:25:27,952 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:25:27,952 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:25:27,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-10-28 09:25:27,965 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:25:27,988 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Ended with exit code 0 [2021-10-28 09:25:27,988 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:27,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:27,989 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:27,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-10-28 09:25:27,991 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 [2021-10-28 09:25:27,998 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:25:27,998 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:25:27,998 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:25:27,998 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-28 09:25:27,998 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:25:28,000 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-28 09:25:28,000 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:25:28,009 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:25:28,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:28,030 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:28,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:28,030 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:28,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-10-28 09:25:28,032 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 [2021-10-28 09:25:28,039 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:25:28,039 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:25:28,040 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:25:28,040 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:25:28,041 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:25:28,041 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:25:28,044 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:25:28,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Ended with exit code 0 [2021-10-28 09:25:28,063 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:28,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:28,066 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:28,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-10-28 09:25:28,067 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 [2021-10-28 09:25:28,074 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:25:28,074 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:25:28,074 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:25:28,074 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:25:28,074 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:25:28,076 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:25:28,076 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:25:28,087 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:25:28,092 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 09:25:28,092 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 09:25:28,092 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:28,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:28,096 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:28,098 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:25:28,098 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:25:28,098 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:25:28,098 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-28 09:25:28,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-10-28 09:25:28,131 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Ended with exit code 0 [2021-10-28 09:25:28,132 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:25:28,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:28,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:28,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:25:28,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:28,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:28,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:25:28,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:28,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:25:28,195 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 09:25:28,195 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 37 states and 48 transitions. cyclomatic complexity: 15 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:25:28,229 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 37 states and 48 transitions. cyclomatic complexity: 15. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 86 states and 109 transitions. Complement of second has 7 states. [2021-10-28 09:25:28,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 09:25:28,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:25:28,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2021-10-28 09:25:28,230 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 4 letters. [2021-10-28 09:25:28,231 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:25:28,232 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 11 letters. Loop has 4 letters. [2021-10-28 09:25:28,232 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:25:28,232 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 8 letters. [2021-10-28 09:25:28,234 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:25:28,235 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 86 states and 109 transitions. [2021-10-28 09:25:28,237 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2021-10-28 09:25:28,238 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 86 states to 67 states and 85 transitions. [2021-10-28 09:25:28,239 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2021-10-28 09:25:28,240 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 30 [2021-10-28 09:25:28,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 85 transitions. [2021-10-28 09:25:28,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:25:28,240 INFO L681 BuchiCegarLoop]: Abstraction has 67 states and 85 transitions. [2021-10-28 09:25:28,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states and 85 transitions. [2021-10-28 09:25:28,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 60. [2021-10-28 09:25:28,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 60 states have (on average 1.2833333333333334) internal successors, (77), 59 states have internal predecessors, (77), 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) [2021-10-28 09:25:28,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 77 transitions. [2021-10-28 09:25:28,256 INFO L704 BuchiCegarLoop]: Abstraction has 60 states and 77 transitions. [2021-10-28 09:25:28,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:25:28,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:25:28,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:25:28,257 INFO L87 Difference]: Start difference. First operand 60 states and 77 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:25:28,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:25:28,275 INFO L93 Difference]: Finished difference Result 79 states and 96 transitions. [2021-10-28 09:25:28,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:25:28,275 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 79 states and 96 transitions. [2021-10-28 09:25:28,278 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 18 [2021-10-28 09:25:28,279 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 79 states to 75 states and 92 transitions. [2021-10-28 09:25:28,280 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2021-10-28 09:25:28,280 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2021-10-28 09:25:28,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 75 states and 92 transitions. [2021-10-28 09:25:28,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:25:28,282 INFO L681 BuchiCegarLoop]: Abstraction has 75 states and 92 transitions. [2021-10-28 09:25:28,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states and 92 transitions. [2021-10-28 09:25:28,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 63. [2021-10-28 09:25:28,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 63 states have (on average 1.2380952380952381) internal successors, (78), 62 states have internal predecessors, (78), 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) [2021-10-28 09:25:28,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 78 transitions. [2021-10-28 09:25:28,300 INFO L704 BuchiCegarLoop]: Abstraction has 63 states and 78 transitions. [2021-10-28 09:25:28,300 INFO L587 BuchiCegarLoop]: Abstraction has 63 states and 78 transitions. [2021-10-28 09:25:28,300 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-10-28 09:25:28,300 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 63 states and 78 transitions. [2021-10-28 09:25:28,301 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-10-28 09:25:28,301 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:25:28,301 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:25:28,302 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 3, 3, 2, 2, 2, 1, 1] [2021-10-28 09:25:28,302 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 09:25:28,302 INFO L791 eck$LassoCheckResult]: Stem: 1334#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 1335#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1355#L12 assume 10 == main_~i~0;main_~up~0 := 0; 1366#L12-2 assume !(0 == main_~i~0); 1365#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1364#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1363#L12 assume !(10 == main_~i~0); 1353#L12-2 assume !(0 == main_~i~0); 1360#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1361#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1352#L12 assume !(10 == main_~i~0); 1354#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 1336#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1337#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1386#L12 assume !(10 == main_~i~0); 1327#L12-2 assume !(0 == main_~i~0); 1328#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1387#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1344#L12 assume 10 == main_~i~0;main_~up~0 := 0; 1345#L12-2 [2021-10-28 09:25:28,302 INFO L793 eck$LassoCheckResult]: Loop: 1345#L12-2 assume !(0 == main_~i~0); 1379#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1378#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1346#L12 assume 10 == main_~i~0;main_~up~0 := 0; 1345#L12-2 [2021-10-28 09:25:28,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:28,303 INFO L85 PathProgramCache]: Analyzing trace with hash -976997301, now seen corresponding path program 1 times [2021-10-28 09:25:28,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:28,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501591419] [2021-10-28 09:25:28,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:28,304 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:28,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:28,335 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 09:25:28,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:25:28,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501591419] [2021-10-28 09:25:28,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501591419] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:28,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355718873] [2021-10-28 09:25:28,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:28,336 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:25:28,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:28,345 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:25:28,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-10-28 09:25:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:28,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:25:28,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:28,464 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 09:25:28,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355718873] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:28,465 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:25:28,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-28 09:25:28,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121923578] [2021-10-28 09:25:28,468 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:25:28,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:28,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1575402, now seen corresponding path program 3 times [2021-10-28 09:25:28,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:28,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793788025] [2021-10-28 09:25:28,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:28,469 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:28,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:28,472 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:25:28,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:28,480 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:25:28,506 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:25:28,506 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:25:28,506 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:25:28,507 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:25:28,507 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:25:28,507 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:28,507 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:25:28,507 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:25:28,507 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration10_Loop [2021-10-28 09:25:28,507 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:25:28,507 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:25:28,508 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:28,512 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:28,516 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:28,518 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:28,566 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:25:28,566 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:25:28,567 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:28,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:28,569 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:28,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-10-28 09:25:28,570 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:25:28,570 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:28,583 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:25:28,583 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=0} Honda state: {ULTIMATE.start_main_~up~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:25:28,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:28,603 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:28,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:28,604 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:28,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-10-28 09:25:28,605 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:25:28,605 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:28,633 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Ended with exit code 0 [2021-10-28 09:25:28,634 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:28,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:28,634 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:28,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2021-10-28 09:25:28,635 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:25:28,636 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:28,738 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:25:28,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Ended with exit code 0 [2021-10-28 09:25:28,741 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:25:28,741 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:25:28,741 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:25:28,741 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:25:28,741 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:25:28,741 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:28,741 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:25:28,741 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:25:28,741 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration10_Loop [2021-10-28 09:25:28,741 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:25:28,741 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:25:28,742 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:28,747 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:28,750 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:28,752 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:28,799 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:25:28,799 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:25:28,799 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:28,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:28,800 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:28,808 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 [2021-10-28 09:25:28,817 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:25:28,817 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:25:28,817 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:25:28,818 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-28 09:25:28,818 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:25:28,819 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-28 09:25:28,819 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:25:28,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2021-10-28 09:25:28,838 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:25:28,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:28,858 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:28,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:28,859 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:28,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2021-10-28 09:25:28,860 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 [2021-10-28 09:25:28,867 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:25:28,868 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:25:28,868 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:25:28,868 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:25:28,868 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:25:28,869 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:25:28,869 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:25:28,883 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:25:28,885 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 09:25:28,885 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 09:25:28,885 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:28,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:28,886 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:28,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2021-10-28 09:25:28,888 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:25:28,888 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:25:28,888 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:25:28,888 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-28 09:25:28,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:28,908 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:25:28,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:28,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:28,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:25:28,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:28,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:28,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:25:28,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:29,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:25:29,013 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 09:25:29,014 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 63 states and 78 transitions. cyclomatic complexity: 22 Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-10-28 09:25:29,048 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 63 states and 78 transitions. cyclomatic complexity: 22. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 89 states and 110 transitions. Complement of second has 7 states. [2021-10-28 09:25:29,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 09:25:29,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-10-28 09:25:29,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2021-10-28 09:25:29,049 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 19 letters. Loop has 4 letters. [2021-10-28 09:25:29,049 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:25:29,049 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 09:25:29,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:29,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:29,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:25:29,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:29,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:29,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:25:29,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:29,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:25:29,159 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 09:25:29,159 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 63 states and 78 transitions. cyclomatic complexity: 22 Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-10-28 09:25:29,195 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 63 states and 78 transitions. cyclomatic complexity: 22. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 108 states and 129 transitions. Complement of second has 7 states. [2021-10-28 09:25:29,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 09:25:29,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-10-28 09:25:29,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2021-10-28 09:25:29,196 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 19 letters. Loop has 4 letters. [2021-10-28 09:25:29,196 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:25:29,196 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 09:25:29,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:29,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:29,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:25:29,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:29,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:29,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:25:29,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:29,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:25:29,301 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 09:25:29,301 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 63 states and 78 transitions. cyclomatic complexity: 22 Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-10-28 09:25:29,328 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 63 states and 78 transitions. cyclomatic complexity: 22. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 97 states and 122 transitions. Complement of second has 8 states. [2021-10-28 09:25:29,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 09:25:29,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-10-28 09:25:29,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-10-28 09:25:29,330 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 19 letters. Loop has 4 letters. [2021-10-28 09:25:29,330 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:25:29,331 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 23 letters. Loop has 4 letters. [2021-10-28 09:25:29,331 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:25:29,331 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 19 letters. Loop has 8 letters. [2021-10-28 09:25:29,331 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:25:29,332 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 97 states and 122 transitions. [2021-10-28 09:25:29,333 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 18 [2021-10-28 09:25:29,334 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 97 states to 70 states and 86 transitions. [2021-10-28 09:25:29,334 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2021-10-28 09:25:29,334 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2021-10-28 09:25:29,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 70 states and 86 transitions. [2021-10-28 09:25:29,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:25:29,335 INFO L681 BuchiCegarLoop]: Abstraction has 70 states and 86 transitions. [2021-10-28 09:25:29,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states and 86 transitions. [2021-10-28 09:25:29,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 41. [2021-10-28 09:25:29,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 40 states have internal predecessors, (51), 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) [2021-10-28 09:25:29,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2021-10-28 09:25:29,337 INFO L704 BuchiCegarLoop]: Abstraction has 41 states and 51 transitions. [2021-10-28 09:25:29,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:25:29,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:25:29,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:25:29,338 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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) [2021-10-28 09:25:29,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:25:29,369 INFO L93 Difference]: Finished difference Result 62 states and 75 transitions. [2021-10-28 09:25:29,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:25:29,369 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 75 transitions. [2021-10-28 09:25:29,370 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2021-10-28 09:25:29,371 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 60 states and 73 transitions. [2021-10-28 09:25:29,371 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2021-10-28 09:25:29,371 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2021-10-28 09:25:29,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 73 transitions. [2021-10-28 09:25:29,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:25:29,371 INFO L681 BuchiCegarLoop]: Abstraction has 60 states and 73 transitions. [2021-10-28 09:25:29,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states and 73 transitions. [2021-10-28 09:25:29,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 49. [2021-10-28 09:25:29,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 48 states have internal predecessors, (60), 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) [2021-10-28 09:25:29,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 60 transitions. [2021-10-28 09:25:29,393 INFO L704 BuchiCegarLoop]: Abstraction has 49 states and 60 transitions. [2021-10-28 09:25:29,393 INFO L587 BuchiCegarLoop]: Abstraction has 49 states and 60 transitions. [2021-10-28 09:25:29,393 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-10-28 09:25:29,393 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 49 states and 60 transitions. [2021-10-28 09:25:29,394 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2021-10-28 09:25:29,394 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:25:29,394 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:25:29,395 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 1, 1, 1, 1] [2021-10-28 09:25:29,395 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [5, 4, 4, 3, 2, 1, 1] [2021-10-28 09:25:29,395 INFO L791 eck$LassoCheckResult]: Stem: 2098#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 2099#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2107#L12 assume !(10 == main_~i~0); 2109#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 2124#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2123#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2122#L12 assume !(10 == main_~i~0); 2119#L12-2 assume !(0 == main_~i~0); 2116#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2113#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2106#L12 assume 10 == main_~i~0;main_~up~0 := 0; 2090#L12-2 [2021-10-28 09:25:29,395 INFO L793 eck$LassoCheckResult]: Loop: 2090#L12-2 assume !(0 == main_~i~0); 2091#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2136#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2103#L12 assume !(10 == main_~i~0); 2105#L12-2 assume !(0 == main_~i~0); 2138#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2137#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2135#L12 assume !(10 == main_~i~0); 2127#L12-2 assume !(0 == main_~i~0); 2130#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2128#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2126#L12 assume !(10 == main_~i~0); 2125#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 2100#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2094#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2095#L12 assume !(10 == main_~i~0); 2111#L12-2 assume !(0 == main_~i~0); 2117#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2114#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2110#L12 assume 10 == main_~i~0;main_~up~0 := 0; 2090#L12-2 [2021-10-28 09:25:29,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:29,396 INFO L85 PathProgramCache]: Analyzing trace with hash -912841737, now seen corresponding path program 1 times [2021-10-28 09:25:29,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:29,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627148033] [2021-10-28 09:25:29,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:29,396 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:29,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:29,420 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:25:29,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:25:29,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627148033] [2021-10-28 09:25:29,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627148033] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:29,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252987452] [2021-10-28 09:25:29,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:29,421 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:25:29,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:29,422 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:25:29,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:29,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-10-28 09:25:29,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:29,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:25:29,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:29,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:29,541 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:25:29,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252987452] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:29,541 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:25:29,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-10-28 09:25:29,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749550657] [2021-10-28 09:25:29,542 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:25:29,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:29,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1872990932, now seen corresponding path program 2 times [2021-10-28 09:25:29,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:29,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460283900] [2021-10-28 09:25:29,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:29,543 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:29,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:29,570 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-28 09:25:29,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:25:29,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460283900] [2021-10-28 09:25:29,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460283900] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:29,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266310362] [2021-10-28 09:25:29,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:25:29,571 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:25:29,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:29,582 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:25:29,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2021-10-28 09:25:29,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:25:29,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:25:29,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:25:29,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:29,714 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-28 09:25:29,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266310362] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:29,714 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:25:29,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-10-28 09:25:29,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791870580] [2021-10-28 09:25:29,715 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:25:29,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:25:29,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:25:29,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:25:29,716 INFO L87 Difference]: Start difference. First operand 49 states and 60 transitions. cyclomatic complexity: 15 Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 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) [2021-10-28 09:25:29,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:25:29,732 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2021-10-28 09:25:29,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:25:29,734 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 67 states and 79 transitions. [2021-10-28 09:25:29,735 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 27 [2021-10-28 09:25:29,736 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 67 states to 64 states and 76 transitions. [2021-10-28 09:25:29,736 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2021-10-28 09:25:29,736 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2021-10-28 09:25:29,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 76 transitions. [2021-10-28 09:25:29,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:25:29,737 INFO L681 BuchiCegarLoop]: Abstraction has 64 states and 76 transitions. [2021-10-28 09:25:29,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states and 76 transitions. [2021-10-28 09:25:29,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 56. [2021-10-28 09:25:29,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 56 states have (on average 1.1964285714285714) internal successors, (67), 55 states have internal predecessors, (67), 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) [2021-10-28 09:25:29,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2021-10-28 09:25:29,739 INFO L704 BuchiCegarLoop]: Abstraction has 56 states and 67 transitions. [2021-10-28 09:25:29,739 INFO L587 BuchiCegarLoop]: Abstraction has 56 states and 67 transitions. [2021-10-28 09:25:29,740 INFO L425 BuchiCegarLoop]: ======== Iteration 12============ [2021-10-28 09:25:29,740 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 56 states and 67 transitions. [2021-10-28 09:25:29,740 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 25 [2021-10-28 09:25:29,740 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:25:29,741 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:25:29,741 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 3, 2, 1, 1, 1] [2021-10-28 09:25:29,741 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [6, 5, 5, 3, 3, 1, 1] [2021-10-28 09:25:29,742 INFO L791 eck$LassoCheckResult]: Stem: 2308#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 2309#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2327#L12 assume !(10 == main_~i~0); 2334#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 2314#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2315#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2353#L12 assume !(10 == main_~i~0); 2306#L12-2 assume !(0 == main_~i~0); 2307#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2312#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2313#L12 assume !(10 == main_~i~0); 2318#L12-2 assume !(0 == main_~i~0); 2330#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2359#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2332#L12 assume 10 == main_~i~0;main_~up~0 := 0; 2304#L12-2 [2021-10-28 09:25:29,742 INFO L793 eck$LassoCheckResult]: Loop: 2304#L12-2 assume !(0 == main_~i~0); 2305#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2352#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2351#L12 assume !(10 == main_~i~0); 2350#L12-2 assume !(0 == main_~i~0); 2348#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2346#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2344#L12 assume !(10 == main_~i~0); 2338#L12-2 assume !(0 == main_~i~0); 2342#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2340#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2336#L12 assume !(10 == main_~i~0); 2329#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 2319#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2310#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2311#L12 assume !(10 == main_~i~0); 2356#L12-2 assume !(0 == main_~i~0); 2357#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2358#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2316#L12 assume !(10 == main_~i~0); 2317#L12-2 assume !(0 == main_~i~0); 2331#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2354#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2355#L12 assume 10 == main_~i~0;main_~up~0 := 0; 2304#L12-2 [2021-10-28 09:25:29,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:29,742 INFO L85 PathProgramCache]: Analyzing trace with hash 554461792, now seen corresponding path program 2 times [2021-10-28 09:25:29,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:29,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201670218] [2021-10-28 09:25:29,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:29,743 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:29,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:29,773 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:25:29,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:25:29,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201670218] [2021-10-28 09:25:29,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201670218] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:29,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991562064] [2021-10-28 09:25:29,774 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:25:29,774 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:25:29,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:29,775 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:25:29,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-10-28 09:25:29,861 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:25:29,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:25:29,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:25:29,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:29,909 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:25:29,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991562064] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:29,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:25:29,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-28 09:25:29,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014683217] [2021-10-28 09:25:29,910 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:25:29,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:29,910 INFO L85 PathProgramCache]: Analyzing trace with hash -77847875, now seen corresponding path program 3 times [2021-10-28 09:25:29,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:29,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987582097] [2021-10-28 09:25:29,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:29,911 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:29,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:29,945 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 35 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-28 09:25:29,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:25:29,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987582097] [2021-10-28 09:25:29,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987582097] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:29,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267937072] [2021-10-28 09:25:29,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:25:29,946 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:25:29,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:29,952 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:25:29,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-10-28 09:25:30,038 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-28 09:25:30,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:25:30,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:25:30,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:30,096 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 35 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-28 09:25:30,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267937072] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:30,097 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:25:30,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-28 09:25:30,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033510757] [2021-10-28 09:25:30,097 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:25:30,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:25:30,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:25:30,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:25:30,098 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. cyclomatic complexity: 15 Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 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) [2021-10-28 09:25:30,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:25:30,127 INFO L93 Difference]: Finished difference Result 75 states and 87 transitions. [2021-10-28 09:25:30,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:25:30,128 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 75 states and 87 transitions. [2021-10-28 09:25:30,128 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 31 [2021-10-28 09:25:30,129 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 75 states to 72 states and 84 transitions. [2021-10-28 09:25:30,129 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2021-10-28 09:25:30,130 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2021-10-28 09:25:30,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 84 transitions. [2021-10-28 09:25:30,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:25:30,130 INFO L681 BuchiCegarLoop]: Abstraction has 72 states and 84 transitions. [2021-10-28 09:25:30,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states and 84 transitions. [2021-10-28 09:25:30,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 64. [2021-10-28 09:25:30,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 64 states have (on average 1.171875) internal successors, (75), 63 states have internal predecessors, (75), 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) [2021-10-28 09:25:30,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2021-10-28 09:25:30,132 INFO L704 BuchiCegarLoop]: Abstraction has 64 states and 75 transitions. [2021-10-28 09:25:30,132 INFO L587 BuchiCegarLoop]: Abstraction has 64 states and 75 transitions. [2021-10-28 09:25:30,133 INFO L425 BuchiCegarLoop]: ======== Iteration 13============ [2021-10-28 09:25:30,133 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 64 states and 75 transitions. [2021-10-28 09:25:30,133 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 29 [2021-10-28 09:25:30,133 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:25:30,134 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:25:30,134 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 4, 3, 1, 1, 1] [2021-10-28 09:25:30,135 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [7, 6, 6, 4, 3, 1, 1] [2021-10-28 09:25:30,135 INFO L791 eck$LassoCheckResult]: Stem: 2563#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 2564#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2584#L12 assume !(10 == main_~i~0); 2593#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 2569#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2570#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2574#L12 assume !(10 == main_~i~0); 2575#L12-2 assume !(0 == main_~i~0); 2571#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2567#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2568#L12 assume !(10 == main_~i~0); 2561#L12-2 assume !(0 == main_~i~0); 2562#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2613#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2612#L12 assume !(10 == main_~i~0); 2588#L12-2 assume !(0 == main_~i~0); 2589#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2611#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2590#L12 assume 10 == main_~i~0;main_~up~0 := 0; 2559#L12-2 [2021-10-28 09:25:30,135 INFO L793 eck$LassoCheckResult]: Loop: 2559#L12-2 assume !(0 == main_~i~0); 2560#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2610#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2609#L12 assume !(10 == main_~i~0); 2608#L12-2 assume !(0 == main_~i~0); 2607#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2606#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2605#L12 assume !(10 == main_~i~0); 2598#L12-2 assume !(0 == main_~i~0); 2602#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2600#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2596#L12 assume !(10 == main_~i~0); 2586#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 2576#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2565#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2566#L12 assume !(10 == main_~i~0); 2614#L12-2 assume !(0 == main_~i~0); 2615#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2622#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2616#L12 assume !(10 == main_~i~0); 2617#L12-2 assume !(0 == main_~i~0); 2621#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2619#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2572#L12 assume !(10 == main_~i~0); 2573#L12-2 assume !(0 == main_~i~0); 2587#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2620#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2618#L12 assume 10 == main_~i~0;main_~up~0 := 0; 2559#L12-2 [2021-10-28 09:25:30,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:30,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1774824375, now seen corresponding path program 3 times [2021-10-28 09:25:30,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:30,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621169066] [2021-10-28 09:25:30,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:30,136 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:30,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:30,173 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 11 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:25:30,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:25:30,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621169066] [2021-10-28 09:25:30,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621169066] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:30,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524415386] [2021-10-28 09:25:30,174 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:25:30,174 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:25:30,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:30,180 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:25:30,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-10-28 09:25:30,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-28 09:25:30,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:25:30,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:25:30,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:30,326 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 11 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:25:30,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524415386] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:30,326 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:25:30,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-28 09:25:30,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479281675] [2021-10-28 09:25:30,327 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:25:30,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:30,328 INFO L85 PathProgramCache]: Analyzing trace with hash -687303130, now seen corresponding path program 4 times [2021-10-28 09:25:30,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:30,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292819026] [2021-10-28 09:25:30,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:30,328 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:30,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:30,368 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 48 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-28 09:25:30,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:25:30,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292819026] [2021-10-28 09:25:30,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292819026] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:30,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738168722] [2021-10-28 09:25:30,369 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 09:25:30,369 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:25:30,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:30,372 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:25:30,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-10-28 09:25:30,480 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 09:25:30,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:25:30,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:25:30,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:30,578 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 48 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-28 09:25:30,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738168722] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:30,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:25:30,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-28 09:25:30,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185053815] [2021-10-28 09:25:30,580 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:25:30,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:25:30,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:25:30,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:25:30,582 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. cyclomatic complexity: 15 Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 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) [2021-10-28 09:25:30,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:25:30,613 INFO L93 Difference]: Finished difference Result 83 states and 95 transitions. [2021-10-28 09:25:30,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:25:30,614 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 83 states and 95 transitions. [2021-10-28 09:25:30,615 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 35 [2021-10-28 09:25:30,616 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 83 states to 80 states and 92 transitions. [2021-10-28 09:25:30,616 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2021-10-28 09:25:30,617 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2021-10-28 09:25:30,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 92 transitions. [2021-10-28 09:25:30,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:25:30,617 INFO L681 BuchiCegarLoop]: Abstraction has 80 states and 92 transitions. [2021-10-28 09:25:30,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states and 92 transitions. [2021-10-28 09:25:30,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 72. [2021-10-28 09:25:30,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 72 states have (on average 1.1527777777777777) internal successors, (83), 71 states have internal predecessors, (83), 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) [2021-10-28 09:25:30,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 83 transitions. [2021-10-28 09:25:30,621 INFO L704 BuchiCegarLoop]: Abstraction has 72 states and 83 transitions. [2021-10-28 09:25:30,621 INFO L587 BuchiCegarLoop]: Abstraction has 72 states and 83 transitions. [2021-10-28 09:25:30,621 INFO L425 BuchiCegarLoop]: ======== Iteration 14============ [2021-10-28 09:25:30,621 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 72 states and 83 transitions. [2021-10-28 09:25:30,622 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 33 [2021-10-28 09:25:30,622 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:25:30,622 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:25:30,628 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [6, 5, 5, 4, 1, 1, 1] [2021-10-28 09:25:30,628 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [8, 7, 7, 5, 3, 1, 1] [2021-10-28 09:25:30,628 INFO L791 eck$LassoCheckResult]: Stem: 2864#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 2865#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2880#L12 assume !(10 == main_~i~0); 2890#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 2866#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2862#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2863#L12 assume !(10 == main_~i~0); 2858#L12-2 assume !(0 == main_~i~0); 2859#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2867#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2869#L12 assume !(10 == main_~i~0); 2870#L12-2 assume !(0 == main_~i~0); 2915#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2914#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2913#L12 assume !(10 == main_~i~0); 2912#L12-2 assume !(0 == main_~i~0); 2885#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2911#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2909#L12 assume !(10 == main_~i~0); 2884#L12-2 assume !(0 == main_~i~0); 2886#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2908#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2887#L12 assume 10 == main_~i~0;main_~up~0 := 0; 2856#L12-2 [2021-10-28 09:25:30,631 INFO L793 eck$LassoCheckResult]: Loop: 2856#L12-2 assume !(0 == main_~i~0); 2857#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2907#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2906#L12 assume !(10 == main_~i~0); 2905#L12-2 assume !(0 == main_~i~0); 2904#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2903#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2902#L12 assume !(10 == main_~i~0); 2895#L12-2 assume !(0 == main_~i~0); 2899#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2897#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2893#L12 assume !(10 == main_~i~0); 2882#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 2871#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2872#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2918#L12 assume !(10 == main_~i~0); 2916#L12-2 assume !(0 == main_~i~0); 2917#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2927#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2926#L12 assume !(10 == main_~i~0); 2924#L12-2 assume !(0 == main_~i~0); 2923#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2922#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2921#L12 assume !(10 == main_~i~0); 2920#L12-2 assume !(0 == main_~i~0); 2919#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2860#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2861#L12 assume !(10 == main_~i~0); 2868#L12-2 assume !(0 == main_~i~0); 2883#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2910#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2925#L12 assume 10 == main_~i~0;main_~up~0 := 0; 2856#L12-2 [2021-10-28 09:25:30,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:30,631 INFO L85 PathProgramCache]: Analyzing trace with hash 790045106, now seen corresponding path program 4 times [2021-10-28 09:25:30,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:30,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397885833] [2021-10-28 09:25:30,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:30,632 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:30,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:30,683 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 14 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:25:30,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:25:30,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397885833] [2021-10-28 09:25:30,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397885833] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:30,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262140246] [2021-10-28 09:25:30,684 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 09:25:30,684 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:25:30,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:30,685 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:25:30,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-10-28 09:25:30,780 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 09:25:30,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:25:30,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:25:30,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:30,843 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 14 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:25:30,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262140246] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:30,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:25:30,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-28 09:25:30,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012737233] [2021-10-28 09:25:30,844 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:25:30,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:30,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1460350223, now seen corresponding path program 5 times [2021-10-28 09:25:30,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:30,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885837078] [2021-10-28 09:25:30,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:30,845 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:30,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:30,890 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 61 proven. 36 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-28 09:25:30,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:25:30,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885837078] [2021-10-28 09:25:30,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885837078] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:30,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119111626] [2021-10-28 09:25:30,891 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 09:25:30,891 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:25:30,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:30,897 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:25:30,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2021-10-28 09:25:31,022 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-10-28 09:25:31,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:25:31,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:25:31,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:31,130 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 61 proven. 36 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-28 09:25:31,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119111626] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:31,130 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:25:31,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-28 09:25:31,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119584103] [2021-10-28 09:25:31,131 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:25:31,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:25:31,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:25:31,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:25:31,132 INFO L87 Difference]: Start difference. First operand 72 states and 83 transitions. cyclomatic complexity: 15 Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 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) [2021-10-28 09:25:31,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:25:31,182 INFO L93 Difference]: Finished difference Result 91 states and 103 transitions. [2021-10-28 09:25:31,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:25:31,183 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 91 states and 103 transitions. [2021-10-28 09:25:31,186 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 39 [2021-10-28 09:25:31,187 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 91 states to 88 states and 100 transitions. [2021-10-28 09:25:31,187 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 37 [2021-10-28 09:25:31,187 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 37 [2021-10-28 09:25:31,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 100 transitions. [2021-10-28 09:25:31,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:25:31,188 INFO L681 BuchiCegarLoop]: Abstraction has 88 states and 100 transitions. [2021-10-28 09:25:31,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states and 100 transitions. [2021-10-28 09:25:31,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 80. [2021-10-28 09:25:31,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 80 states have (on average 1.1375) internal successors, (91), 79 states have internal predecessors, (91), 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) [2021-10-28 09:25:31,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 91 transitions. [2021-10-28 09:25:31,191 INFO L704 BuchiCegarLoop]: Abstraction has 80 states and 91 transitions. [2021-10-28 09:25:31,191 INFO L587 BuchiCegarLoop]: Abstraction has 80 states and 91 transitions. [2021-10-28 09:25:31,192 INFO L425 BuchiCegarLoop]: ======== Iteration 15============ [2021-10-28 09:25:31,192 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 80 states and 91 transitions. [2021-10-28 09:25:31,192 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 37 [2021-10-28 09:25:31,192 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:25:31,193 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:25:31,195 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [7, 6, 6, 5, 1, 1, 1] [2021-10-28 09:25:31,195 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [9, 8, 8, 6, 3, 1, 1] [2021-10-28 09:25:31,195 INFO L791 eck$LassoCheckResult]: Stem: 3199#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 3200#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3217#L12 assume !(10 == main_~i~0); 3228#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 3205#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3203#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3204#L12 assume !(10 == main_~i~0); 3197#L12-2 assume !(0 == main_~i~0); 3198#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3206#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3208#L12 assume !(10 == main_~i~0); 3209#L12-2 assume !(0 == main_~i~0); 3256#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3255#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3254#L12 assume !(10 == main_~i~0); 3253#L12-2 assume !(0 == main_~i~0); 3252#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3251#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3250#L12 assume !(10 == main_~i~0); 3249#L12-2 assume !(0 == main_~i~0); 3223#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3248#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3247#L12 assume !(10 == main_~i~0); 3222#L12-2 assume !(0 == main_~i~0); 3224#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3246#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3225#L12 assume 10 == main_~i~0;main_~up~0 := 0; 3195#L12-2 [2021-10-28 09:25:31,195 INFO L793 eck$LassoCheckResult]: Loop: 3195#L12-2 assume !(0 == main_~i~0); 3196#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3245#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3244#L12 assume !(10 == main_~i~0); 3243#L12-2 assume !(0 == main_~i~0); 3242#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3241#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3240#L12 assume !(10 == main_~i~0); 3233#L12-2 assume !(0 == main_~i~0); 3237#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3235#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3231#L12 assume !(10 == main_~i~0); 3220#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 3210#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3201#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3202#L12 assume !(10 == main_~i~0); 3207#L12-2 assume !(0 == main_~i~0); 3221#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3274#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3273#L12 assume !(10 == main_~i~0); 3272#L12-2 assume !(0 == main_~i~0); 3271#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3270#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3269#L12 assume !(10 == main_~i~0); 3268#L12-2 assume !(0 == main_~i~0); 3267#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3266#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3265#L12 assume !(10 == main_~i~0); 3264#L12-2 assume !(0 == main_~i~0); 3263#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3261#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3259#L12 assume !(10 == main_~i~0); 3257#L12-2 assume !(0 == main_~i~0); 3258#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3262#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3260#L12 assume 10 == main_~i~0;main_~up~0 := 0; 3195#L12-2 [2021-10-28 09:25:31,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:31,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1500441957, now seen corresponding path program 5 times [2021-10-28 09:25:31,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:31,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058115602] [2021-10-28 09:25:31,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:31,196 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:31,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:31,272 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 17 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:25:31,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:25:31,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058115602] [2021-10-28 09:25:31,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058115602] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:31,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707625309] [2021-10-28 09:25:31,273 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 09:25:31,273 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:25:31,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:31,277 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:25:31,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2021-10-28 09:25:31,411 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-10-28 09:25:31,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:25:31,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:25:31,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:31,500 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 17 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:25:31,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707625309] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:31,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:25:31,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-10-28 09:25:31,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820548127] [2021-10-28 09:25:31,500 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:25:31,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:31,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1420175224, now seen corresponding path program 6 times [2021-10-28 09:25:31,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:31,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851401634] [2021-10-28 09:25:31,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:31,501 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:31,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:31,567 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 74 proven. 55 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-28 09:25:31,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:25:31,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851401634] [2021-10-28 09:25:31,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851401634] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:31,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136908965] [2021-10-28 09:25:31,568 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 09:25:31,569 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:25:31,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:31,578 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:25:31,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2021-10-28 09:25:31,729 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-10-28 09:25:31,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:25:31,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:25:31,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:31,842 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 74 proven. 55 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-28 09:25:31,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136908965] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:31,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:25:31,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-10-28 09:25:31,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504981110] [2021-10-28 09:25:31,844 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:25:31,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:25:31,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:25:31,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:25:31,845 INFO L87 Difference]: Start difference. First operand 80 states and 91 transitions. cyclomatic complexity: 15 Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 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) [2021-10-28 09:25:31,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:25:31,883 INFO L93 Difference]: Finished difference Result 99 states and 111 transitions. [2021-10-28 09:25:31,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:25:31,884 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 99 states and 111 transitions. [2021-10-28 09:25:31,885 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 43 [2021-10-28 09:25:31,886 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 99 states to 96 states and 108 transitions. [2021-10-28 09:25:31,886 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2021-10-28 09:25:31,886 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2021-10-28 09:25:31,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 96 states and 108 transitions. [2021-10-28 09:25:31,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:25:31,887 INFO L681 BuchiCegarLoop]: Abstraction has 96 states and 108 transitions. [2021-10-28 09:25:31,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states and 108 transitions. [2021-10-28 09:25:31,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 88. [2021-10-28 09:25:31,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 88 states have (on average 1.125) internal successors, (99), 87 states have internal predecessors, (99), 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) [2021-10-28 09:25:31,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 99 transitions. [2021-10-28 09:25:31,889 INFO L704 BuchiCegarLoop]: Abstraction has 88 states and 99 transitions. [2021-10-28 09:25:31,890 INFO L587 BuchiCegarLoop]: Abstraction has 88 states and 99 transitions. [2021-10-28 09:25:31,890 INFO L425 BuchiCegarLoop]: ======== Iteration 16============ [2021-10-28 09:25:31,890 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 88 states and 99 transitions. [2021-10-28 09:25:31,890 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 41 [2021-10-28 09:25:31,891 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:25:31,891 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:25:31,892 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [8, 7, 7, 6, 1, 1, 1] [2021-10-28 09:25:31,892 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [10, 9, 9, 7, 3, 1, 1] [2021-10-28 09:25:31,892 INFO L791 eck$LassoCheckResult]: Stem: 3580#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 3581#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3600#L12 assume !(10 == main_~i~0); 3610#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 3586#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3587#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3590#L12 assume !(10 == main_~i~0); 3591#L12-2 assume !(0 == main_~i~0); 3588#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3584#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3585#L12 assume !(10 == main_~i~0); 3578#L12-2 assume !(0 == main_~i~0); 3579#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3641#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3640#L12 assume !(10 == main_~i~0); 3639#L12-2 assume !(0 == main_~i~0); 3638#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3637#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3636#L12 assume !(10 == main_~i~0); 3635#L12-2 assume !(0 == main_~i~0); 3634#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3633#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3632#L12 assume !(10 == main_~i~0); 3631#L12-2 assume !(0 == main_~i~0); 3605#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3630#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3629#L12 assume !(10 == main_~i~0); 3604#L12-2 assume !(0 == main_~i~0); 3606#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3628#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3607#L12 assume 10 == main_~i~0;main_~up~0 := 0; 3576#L12-2 [2021-10-28 09:25:31,892 INFO L793 eck$LassoCheckResult]: Loop: 3576#L12-2 assume !(0 == main_~i~0); 3577#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3627#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3626#L12 assume !(10 == main_~i~0); 3625#L12-2 assume !(0 == main_~i~0); 3624#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3623#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3622#L12 assume !(10 == main_~i~0); 3615#L12-2 assume !(0 == main_~i~0); 3619#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3617#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3613#L12 assume !(10 == main_~i~0); 3602#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 3592#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3582#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3583#L12 assume !(10 == main_~i~0); 3589#L12-2 assume !(0 == main_~i~0); 3603#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3663#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3662#L12 assume !(10 == main_~i~0); 3661#L12-2 assume !(0 == main_~i~0); 3660#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3659#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3658#L12 assume !(10 == main_~i~0); 3657#L12-2 assume !(0 == main_~i~0); 3656#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3655#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3654#L12 assume !(10 == main_~i~0); 3653#L12-2 assume !(0 == main_~i~0); 3652#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3651#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3650#L12 assume !(10 == main_~i~0); 3649#L12-2 assume !(0 == main_~i~0); 3648#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3646#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3644#L12 assume !(10 == main_~i~0); 3642#L12-2 assume !(0 == main_~i~0); 3643#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3647#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3645#L12 assume 10 == main_~i~0;main_~up~0 := 0; 3576#L12-2 [2021-10-28 09:25:31,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:31,893 INFO L85 PathProgramCache]: Analyzing trace with hash -60397820, now seen corresponding path program 6 times [2021-10-28 09:25:31,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:31,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687074394] [2021-10-28 09:25:31,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:31,893 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:31,950 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 20 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:25:31,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:25:31,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687074394] [2021-10-28 09:25:31,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687074394] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:31,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937154091] [2021-10-28 09:25:31,951 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 09:25:31,951 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:25:31,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:31,952 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:25:31,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2021-10-28 09:25:32,088 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-10-28 09:25:32,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:25:32,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:25:32,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:32,200 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 20 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:25:32,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937154091] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:32,201 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:25:32,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-28 09:25:32,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539230623] [2021-10-28 09:25:32,202 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:25:32,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:32,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1107573407, now seen corresponding path program 7 times [2021-10-28 09:25:32,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:32,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317739757] [2021-10-28 09:25:32,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:32,203 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:32,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:32,298 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 87 proven. 78 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-28 09:25:32,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:25:32,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317739757] [2021-10-28 09:25:32,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317739757] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:32,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177247411] [2021-10-28 09:25:32,299 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 09:25:32,299 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:25:32,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:32,301 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:25:32,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2021-10-28 09:25:32,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:32,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:25:32,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:32,581 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 87 proven. 78 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-28 09:25:32,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177247411] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:32,582 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:25:32,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-28 09:25:32,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659018038] [2021-10-28 09:25:32,582 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:25:32,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:25:32,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:25:32,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:25:32,583 INFO L87 Difference]: Start difference. First operand 88 states and 99 transitions. cyclomatic complexity: 15 Second operand has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 10 states have internal predecessors, (31), 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) [2021-10-28 09:25:32,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:25:32,642 INFO L93 Difference]: Finished difference Result 107 states and 119 transitions. [2021-10-28 09:25:32,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:25:32,644 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 107 states and 119 transitions. [2021-10-28 09:25:32,645 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 47 [2021-10-28 09:25:32,646 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 107 states to 104 states and 116 transitions. [2021-10-28 09:25:32,646 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 45 [2021-10-28 09:25:32,646 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 45 [2021-10-28 09:25:32,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 104 states and 116 transitions. [2021-10-28 09:25:32,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:25:32,646 INFO L681 BuchiCegarLoop]: Abstraction has 104 states and 116 transitions. [2021-10-28 09:25:32,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states and 116 transitions. [2021-10-28 09:25:32,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 96. [2021-10-28 09:25:32,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 96 states have (on average 1.1145833333333333) internal successors, (107), 95 states have internal predecessors, (107), 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) [2021-10-28 09:25:32,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 107 transitions. [2021-10-28 09:25:32,649 INFO L704 BuchiCegarLoop]: Abstraction has 96 states and 107 transitions. [2021-10-28 09:25:32,649 INFO L587 BuchiCegarLoop]: Abstraction has 96 states and 107 transitions. [2021-10-28 09:25:32,650 INFO L425 BuchiCegarLoop]: ======== Iteration 17============ [2021-10-28 09:25:32,650 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 96 states and 107 transitions. [2021-10-28 09:25:32,650 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 45 [2021-10-28 09:25:32,651 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:25:32,651 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:25:32,652 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [9, 8, 8, 7, 1, 1, 1] [2021-10-28 09:25:32,652 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [11, 10, 10, 8, 3, 1, 1] [2021-10-28 09:25:32,652 INFO L791 eck$LassoCheckResult]: Stem: 4003#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 4004#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4023#L12 assume !(10 == main_~i~0); 4033#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 4009#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4010#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4013#L12 assume !(10 == main_~i~0); 4014#L12-2 assume !(0 == main_~i~0); 4011#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4007#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4008#L12 assume !(10 == main_~i~0); 4001#L12-2 assume !(0 == main_~i~0); 4002#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4068#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4067#L12 assume !(10 == main_~i~0); 4066#L12-2 assume !(0 == main_~i~0); 4065#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4064#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4063#L12 assume !(10 == main_~i~0); 4062#L12-2 assume !(0 == main_~i~0); 4061#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4060#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4059#L12 assume !(10 == main_~i~0); 4058#L12-2 assume !(0 == main_~i~0); 4057#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4056#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4055#L12 assume !(10 == main_~i~0); 4054#L12-2 assume !(0 == main_~i~0); 4028#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4053#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4052#L12 assume !(10 == main_~i~0); 4027#L12-2 assume !(0 == main_~i~0); 4029#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4051#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4030#L12 assume 10 == main_~i~0;main_~up~0 := 0; 3999#L12-2 [2021-10-28 09:25:32,652 INFO L793 eck$LassoCheckResult]: Loop: 3999#L12-2 assume !(0 == main_~i~0); 4000#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4050#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4049#L12 assume !(10 == main_~i~0); 4048#L12-2 assume !(0 == main_~i~0); 4047#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4046#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4045#L12 assume !(10 == main_~i~0); 4038#L12-2 assume !(0 == main_~i~0); 4042#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4040#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4036#L12 assume !(10 == main_~i~0); 4025#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 4015#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4005#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4006#L12 assume !(10 == main_~i~0); 4012#L12-2 assume !(0 == main_~i~0); 4026#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4094#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4093#L12 assume !(10 == main_~i~0); 4092#L12-2 assume !(0 == main_~i~0); 4091#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4090#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4089#L12 assume !(10 == main_~i~0); 4088#L12-2 assume !(0 == main_~i~0); 4087#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4086#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4085#L12 assume !(10 == main_~i~0); 4084#L12-2 assume !(0 == main_~i~0); 4083#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4082#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4081#L12 assume !(10 == main_~i~0); 4080#L12-2 assume !(0 == main_~i~0); 4079#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4078#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4077#L12 assume !(10 == main_~i~0); 4076#L12-2 assume !(0 == main_~i~0); 4075#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4073#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4071#L12 assume !(10 == main_~i~0); 4069#L12-2 assume !(0 == main_~i~0); 4070#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4074#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4072#L12 assume 10 == main_~i~0;main_~up~0 := 0; 3999#L12-2 [2021-10-28 09:25:32,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:32,653 INFO L85 PathProgramCache]: Analyzing trace with hash 87645933, now seen corresponding path program 7 times [2021-10-28 09:25:32,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:32,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778113093] [2021-10-28 09:25:32,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:32,653 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:32,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:32,735 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 23 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:25:32,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:25:32,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778113093] [2021-10-28 09:25:32,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778113093] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:32,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876528578] [2021-10-28 09:25:32,736 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 09:25:32,736 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:25:32,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:32,737 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:25:32,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2021-10-28 09:25:32,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:32,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 09:25:32,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:32,989 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 23 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:25:32,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876528578] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:32,990 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:25:32,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-10-28 09:25:32,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462269067] [2021-10-28 09:25:32,990 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:25:32,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:32,991 INFO L85 PathProgramCache]: Analyzing trace with hash 638469834, now seen corresponding path program 8 times [2021-10-28 09:25:32,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:32,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309551099] [2021-10-28 09:25:32,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:32,991 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:32,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:33,063 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 100 proven. 105 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-28 09:25:33,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:25:33,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309551099] [2021-10-28 09:25:33,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309551099] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:33,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644688321] [2021-10-28 09:25:33,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:25:33,064 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:25:33,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:33,068 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:25:33,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2021-10-28 09:25:33,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:25:33,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:25:33,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 09:25:33,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:33,391 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 100 proven. 105 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-28 09:25:33,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644688321] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:33,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:25:33,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-10-28 09:25:33,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295820376] [2021-10-28 09:25:33,392 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:25:33,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:25:33,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:25:33,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:25:33,393 INFO L87 Difference]: Start difference. First operand 96 states and 107 transitions. cyclomatic complexity: 15 Second operand has 11 states, 10 states have (on average 3.5) internal successors, (35), 11 states have internal predecessors, (35), 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) [2021-10-28 09:25:33,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:25:33,452 INFO L93 Difference]: Finished difference Result 115 states and 127 transitions. [2021-10-28 09:25:33,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:25:33,452 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 115 states and 127 transitions. [2021-10-28 09:25:33,453 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 51 [2021-10-28 09:25:33,454 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 115 states to 112 states and 124 transitions. [2021-10-28 09:25:33,454 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 49 [2021-10-28 09:25:33,454 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 49 [2021-10-28 09:25:33,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 112 states and 124 transitions. [2021-10-28 09:25:33,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:25:33,455 INFO L681 BuchiCegarLoop]: Abstraction has 112 states and 124 transitions. [2021-10-28 09:25:33,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states and 124 transitions. [2021-10-28 09:25:33,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 104. [2021-10-28 09:25:33,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 104 states have (on average 1.1057692307692308) internal successors, (115), 103 states have internal predecessors, (115), 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) [2021-10-28 09:25:33,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 115 transitions. [2021-10-28 09:25:33,458 INFO L704 BuchiCegarLoop]: Abstraction has 104 states and 115 transitions. [2021-10-28 09:25:33,458 INFO L587 BuchiCegarLoop]: Abstraction has 104 states and 115 transitions. [2021-10-28 09:25:33,458 INFO L425 BuchiCegarLoop]: ======== Iteration 18============ [2021-10-28 09:25:33,458 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 104 states and 115 transitions. [2021-10-28 09:25:33,459 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 49 [2021-10-28 09:25:33,459 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:25:33,459 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:25:33,460 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [10, 9, 9, 8, 1, 1, 1] [2021-10-28 09:25:33,460 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [12, 11, 11, 9, 3, 1, 1] [2021-10-28 09:25:33,460 INFO L791 eck$LassoCheckResult]: Stem: 4472#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 4473#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4488#L12 assume !(10 == main_~i~0); 4497#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 4474#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4475#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4478#L12 assume !(10 == main_~i~0); 4479#L12-2 assume !(0 == main_~i~0); 4476#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4470#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4471#L12 assume !(10 == main_~i~0); 4466#L12-2 assume !(0 == main_~i~0); 4467#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4537#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4536#L12 assume !(10 == main_~i~0); 4535#L12-2 assume !(0 == main_~i~0); 4534#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4533#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4532#L12 assume !(10 == main_~i~0); 4531#L12-2 assume !(0 == main_~i~0); 4530#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4529#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4528#L12 assume !(10 == main_~i~0); 4527#L12-2 assume !(0 == main_~i~0); 4526#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4525#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4524#L12 assume !(10 == main_~i~0); 4523#L12-2 assume !(0 == main_~i~0); 4522#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4521#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4520#L12 assume !(10 == main_~i~0); 4519#L12-2 assume !(0 == main_~i~0); 4493#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4518#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4517#L12 assume !(10 == main_~i~0); 4492#L12-2 assume !(0 == main_~i~0); 4494#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4516#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4495#L12 assume 10 == main_~i~0;main_~up~0 := 0; 4464#L12-2 [2021-10-28 09:25:33,461 INFO L793 eck$LassoCheckResult]: Loop: 4464#L12-2 assume !(0 == main_~i~0); 4465#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4515#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4514#L12 assume !(10 == main_~i~0); 4513#L12-2 assume !(0 == main_~i~0); 4511#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4509#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4507#L12 assume !(10 == main_~i~0); 4501#L12-2 assume !(0 == main_~i~0); 4505#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4503#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4499#L12 assume !(10 == main_~i~0); 4490#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 4480#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4468#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4469#L12 assume !(10 == main_~i~0); 4477#L12-2 assume !(0 == main_~i~0); 4491#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4567#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4566#L12 assume !(10 == main_~i~0); 4565#L12-2 assume !(0 == main_~i~0); 4564#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4563#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4562#L12 assume !(10 == main_~i~0); 4561#L12-2 assume !(0 == main_~i~0); 4560#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4559#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4558#L12 assume !(10 == main_~i~0); 4557#L12-2 assume !(0 == main_~i~0); 4556#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4555#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4554#L12 assume !(10 == main_~i~0); 4553#L12-2 assume !(0 == main_~i~0); 4552#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4551#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4550#L12 assume !(10 == main_~i~0); 4549#L12-2 assume !(0 == main_~i~0); 4548#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4547#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4546#L12 assume !(10 == main_~i~0); 4545#L12-2 assume !(0 == main_~i~0); 4544#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4542#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4540#L12 assume !(10 == main_~i~0); 4538#L12-2 assume !(0 == main_~i~0); 4539#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4543#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4541#L12 assume 10 == main_~i~0;main_~up~0 := 0; 4464#L12-2 [2021-10-28 09:25:33,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:33,461 INFO L85 PathProgramCache]: Analyzing trace with hash -91473322, now seen corresponding path program 8 times [2021-10-28 09:25:33,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:33,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749901589] [2021-10-28 09:25:33,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:33,462 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:33,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:33,563 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 26 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:25:33,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:25:33,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749901589] [2021-10-28 09:25:33,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749901589] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:33,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901942860] [2021-10-28 09:25:33,563 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:25:33,563 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:25:33,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:33,564 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:25:33,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2021-10-28 09:25:33,738 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:25:33,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:25:33,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 09:25:33,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:33,840 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 26 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:25:33,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901942860] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:33,840 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:25:33,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-10-28 09:25:33,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635953954] [2021-10-28 09:25:33,841 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:25:33,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:33,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1421863859, now seen corresponding path program 9 times [2021-10-28 09:25:33,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:33,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251401520] [2021-10-28 09:25:33,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:33,842 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:33,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:33,933 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 113 proven. 136 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-28 09:25:33,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:25:33,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251401520] [2021-10-28 09:25:33,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251401520] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:33,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124692451] [2021-10-28 09:25:33,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:25:33,934 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:25:33,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:33,936 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:25:33,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2021-10-28 09:25:34,134 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-10-28 09:25:34,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:25:34,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 09:25:34,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:34,287 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 113 proven. 136 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-28 09:25:34,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124692451] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:34,288 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:25:34,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-10-28 09:25:34,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012713942] [2021-10-28 09:25:34,288 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:25:34,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:25:34,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 09:25:34,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:25:34,289 INFO L87 Difference]: Start difference. First operand 104 states and 115 transitions. cyclomatic complexity: 15 Second operand has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 12 states have internal predecessors, (39), 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) [2021-10-28 09:25:34,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:25:34,353 INFO L93 Difference]: Finished difference Result 123 states and 135 transitions. [2021-10-28 09:25:34,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:25:34,354 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 123 states and 135 transitions. [2021-10-28 09:25:34,355 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 55 [2021-10-28 09:25:34,356 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 123 states to 120 states and 132 transitions. [2021-10-28 09:25:34,356 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 53 [2021-10-28 09:25:34,356 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2021-10-28 09:25:34,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 120 states and 132 transitions. [2021-10-28 09:25:34,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:25:34,357 INFO L681 BuchiCegarLoop]: Abstraction has 120 states and 132 transitions. [2021-10-28 09:25:34,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states and 132 transitions. [2021-10-28 09:25:34,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 112. [2021-10-28 09:25:34,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 112 states have (on average 1.0982142857142858) internal successors, (123), 111 states have internal predecessors, (123), 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) [2021-10-28 09:25:34,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 123 transitions. [2021-10-28 09:25:34,360 INFO L704 BuchiCegarLoop]: Abstraction has 112 states and 123 transitions. [2021-10-28 09:25:34,380 INFO L587 BuchiCegarLoop]: Abstraction has 112 states and 123 transitions. [2021-10-28 09:25:34,381 INFO L425 BuchiCegarLoop]: ======== Iteration 19============ [2021-10-28 09:25:34,381 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 112 states and 123 transitions. [2021-10-28 09:25:34,382 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 53 [2021-10-28 09:25:34,382 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:25:34,382 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:25:34,383 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 9, 1, 1, 1] [2021-10-28 09:25:34,383 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [13, 12, 12, 10, 3, 1, 1] [2021-10-28 09:25:34,383 INFO L791 eck$LassoCheckResult]: Stem: 4979#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 4980#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4994#L12 assume !(10 == main_~i~0); 5005#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 4981#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4982#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4985#L12 assume !(10 == main_~i~0); 4986#L12-2 assume !(0 == main_~i~0); 4983#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4977#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4978#L12 assume !(10 == main_~i~0); 4973#L12-2 assume !(0 == main_~i~0); 4974#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5048#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5047#L12 assume !(10 == main_~i~0); 5046#L12-2 assume !(0 == main_~i~0); 5045#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5044#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5043#L12 assume !(10 == main_~i~0); 5042#L12-2 assume !(0 == main_~i~0); 5041#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5040#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5039#L12 assume !(10 == main_~i~0); 5038#L12-2 assume !(0 == main_~i~0); 5037#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5036#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5035#L12 assume !(10 == main_~i~0); 5034#L12-2 assume !(0 == main_~i~0); 5033#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5032#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5031#L12 assume !(10 == main_~i~0); 5030#L12-2 assume !(0 == main_~i~0); 5029#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5028#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5027#L12 assume !(10 == main_~i~0); 5026#L12-2 assume !(0 == main_~i~0); 5000#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5025#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5024#L12 assume !(10 == main_~i~0); 4999#L12-2 assume !(0 == main_~i~0); 5001#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5023#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5002#L12 assume 10 == main_~i~0;main_~up~0 := 0; 4971#L12-2 [2021-10-28 09:25:34,384 INFO L793 eck$LassoCheckResult]: Loop: 4971#L12-2 assume !(0 == main_~i~0); 4972#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5022#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5021#L12 assume !(10 == main_~i~0); 5020#L12-2 assume !(0 == main_~i~0); 5019#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5018#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5017#L12 assume !(10 == main_~i~0); 5010#L12-2 assume !(0 == main_~i~0); 5014#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5012#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5008#L12 assume !(10 == main_~i~0); 4997#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 4987#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4975#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4976#L12 assume !(10 == main_~i~0); 4984#L12-2 assume !(0 == main_~i~0); 4998#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5082#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5081#L12 assume !(10 == main_~i~0); 5080#L12-2 assume !(0 == main_~i~0); 5079#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5078#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5077#L12 assume !(10 == main_~i~0); 5076#L12-2 assume !(0 == main_~i~0); 5075#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5074#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5073#L12 assume !(10 == main_~i~0); 5072#L12-2 assume !(0 == main_~i~0); 5071#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5070#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5069#L12 assume !(10 == main_~i~0); 5068#L12-2 assume !(0 == main_~i~0); 5067#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5066#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5065#L12 assume !(10 == main_~i~0); 5064#L12-2 assume !(0 == main_~i~0); 5063#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5062#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5061#L12 assume !(10 == main_~i~0); 5060#L12-2 assume !(0 == main_~i~0); 5059#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5058#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5057#L12 assume !(10 == main_~i~0); 5056#L12-2 assume !(0 == main_~i~0); 5055#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5053#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5051#L12 assume !(10 == main_~i~0); 5049#L12-2 assume !(0 == main_~i~0); 5050#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5054#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5052#L12 assume 10 == main_~i~0;main_~up~0 := 0; 4971#L12-2 [2021-10-28 09:25:34,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:34,384 INFO L85 PathProgramCache]: Analyzing trace with hash 180435263, now seen corresponding path program 9 times [2021-10-28 09:25:34,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:34,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592490625] [2021-10-28 09:25:34,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:34,385 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:34,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:34,395 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:25:34,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:34,403 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:25:34,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:34,404 INFO L85 PathProgramCache]: Analyzing trace with hash -690818020, now seen corresponding path program 10 times [2021-10-28 09:25:34,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:34,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24332711] [2021-10-28 09:25:34,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:34,404 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:34,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:34,415 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:25:34,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:34,423 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:25:34,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:34,424 INFO L85 PathProgramCache]: Analyzing trace with hash -120542630, now seen corresponding path program 2 times [2021-10-28 09:25:34,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:34,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723701965] [2021-10-28 09:25:34,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:34,425 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:34,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:34,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 672 proven. 15 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2021-10-28 09:25:34,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:25:34,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723701965] [2021-10-28 09:25:34,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723701965] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:34,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340709152] [2021-10-28 09:25:34,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:25:34,505 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:25:34,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:34,508 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:25:34,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2021-10-28 09:25:34,724 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:25:34,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:25:34,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:25:34,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:34,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 672 proven. 15 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2021-10-28 09:25:34,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340709152] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:34,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:25:34,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-28 09:25:34,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649513621] [2021-10-28 09:25:35,249 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:25:35,249 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:25:35,249 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:25:35,250 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:25:35,250 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:25:35,250 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:35,250 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:25:35,250 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:25:35,250 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration19_Loop [2021-10-28 09:25:35,250 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:25:35,250 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:25:35,251 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:35,254 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:35,264 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:35,269 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:35,343 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:25:35,343 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:25:35,343 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:35,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:35,348 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:35,350 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:25:35,351 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:35,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Waiting until timeout for monitored process [2021-10-28 09:25:35,381 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:25:35,381 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_15=1} Honda state: {v_rep~unnamed0~0~true_15=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:25:35,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:35,414 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:35,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:35,416 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:35,418 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:25:35,418 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:35,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Waiting until timeout for monitored process [2021-10-28 09:25:35,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:35,466 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:35,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:35,467 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:35,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Waiting until timeout for monitored process [2021-10-28 09:25:35,468 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:25:35,468 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:35,477 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:25:35,497 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Ended with exit code 0 [2021-10-28 09:25:35,497 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:25:35,497 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:25:35,497 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:25:35,497 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:25:35,497 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:25:35,497 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:35,497 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:25:35,497 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:25:35,497 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration19_Loop [2021-10-28 09:25:35,497 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:25:35,497 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:25:35,498 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:35,502 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:35,510 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:35,515 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:35,580 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:25:35,580 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:25:35,580 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:35,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:35,581 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:35,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Waiting until timeout for monitored process [2021-10-28 09:25:35,583 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 [2021-10-28 09:25:35,590 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:25:35,590 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:25:35,590 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:25:35,590 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:25:35,592 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:25:35,592 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:25:35,615 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:25:35,636 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Ended with exit code 0 [2021-10-28 09:25:35,636 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:35,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:35,637 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:35,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Waiting until timeout for monitored process [2021-10-28 09:25:35,638 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 [2021-10-28 09:25:35,645 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:25:35,645 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:25:35,645 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:25:35,645 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:25:35,645 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:25:35,646 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:25:35,646 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:25:35,648 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:25:35,650 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 09:25:35,650 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 09:25:35,650 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:35,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:35,651 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:35,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Waiting until timeout for monitored process [2021-10-28 09:25:35,652 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:25:35,652 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:25:35,652 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:25:35,652 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 13 Supporting invariants [] [2021-10-28 09:25:35,672 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Ended with exit code 0 [2021-10-28 09:25:35,672 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:25:35,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:35,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:35,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:25:35,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:35,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:35,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:25:35,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:36,029 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-10-28 09:25:36,029 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2021-10-28 09:25:36,029 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 112 states and 123 transitions. cyclomatic complexity: 15 Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 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) [2021-10-28 09:25:36,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:36,227 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 112 states and 123 transitions. cyclomatic complexity: 15. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 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 461 states and 502 transitions. Complement of second has 19 states. [2021-10-28 09:25:36,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 1 stem states 8 non-accepting loop states 1 accepting loop states [2021-10-28 09:25:36,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 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) [2021-10-28 09:25:36,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 44 transitions. [2021-10-28 09:25:36,229 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 44 transitions. Stem has 43 letters. Loop has 52 letters. [2021-10-28 09:25:36,230 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:25:36,230 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 44 transitions. Stem has 95 letters. Loop has 52 letters. [2021-10-28 09:25:36,231 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:25:36,231 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 44 transitions. Stem has 43 letters. Loop has 104 letters. [2021-10-28 09:25:36,232 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:25:36,232 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 461 states and 502 transitions. [2021-10-28 09:25:36,236 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 57 [2021-10-28 09:25:36,240 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 461 states to 386 states and 420 transitions. [2021-10-28 09:25:36,240 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 88 [2021-10-28 09:25:36,240 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 91 [2021-10-28 09:25:36,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 386 states and 420 transitions. [2021-10-28 09:25:36,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:25:36,240 INFO L681 BuchiCegarLoop]: Abstraction has 386 states and 420 transitions. [2021-10-28 09:25:36,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states and 420 transitions. [2021-10-28 09:25:36,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 326. [2021-10-28 09:25:36,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 326 states have (on average 1.0736196319018405) internal successors, (350), 325 states have internal predecessors, (350), 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) [2021-10-28 09:25:36,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 350 transitions. [2021-10-28 09:25:36,249 INFO L704 BuchiCegarLoop]: Abstraction has 326 states and 350 transitions. [2021-10-28 09:25:36,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:25:36,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:25:36,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:25:36,249 INFO L87 Difference]: Start difference. First operand 326 states and 350 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 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) [2021-10-28 09:25:36,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:25:36,278 INFO L93 Difference]: Finished difference Result 233 states and 255 transitions. [2021-10-28 09:25:36,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:25:36,278 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 233 states and 255 transitions. [2021-10-28 09:25:36,280 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 59 [2021-10-28 09:25:36,282 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 233 states to 207 states and 229 transitions. [2021-10-28 09:25:36,282 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 57 [2021-10-28 09:25:36,282 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2021-10-28 09:25:36,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 207 states and 229 transitions. [2021-10-28 09:25:36,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:25:36,283 INFO L681 BuchiCegarLoop]: Abstraction has 207 states and 229 transitions. [2021-10-28 09:25:36,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states and 229 transitions. [2021-10-28 09:25:36,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 120. [2021-10-28 09:25:36,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 120 states have (on average 1.1) internal successors, (132), 119 states have internal predecessors, (132), 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) [2021-10-28 09:25:36,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 132 transitions. [2021-10-28 09:25:36,286 INFO L704 BuchiCegarLoop]: Abstraction has 120 states and 132 transitions. [2021-10-28 09:25:36,287 INFO L587 BuchiCegarLoop]: Abstraction has 120 states and 132 transitions. [2021-10-28 09:25:36,287 INFO L425 BuchiCegarLoop]: ======== Iteration 20============ [2021-10-28 09:25:36,287 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 120 states and 132 transitions. [2021-10-28 09:25:36,288 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 57 [2021-10-28 09:25:36,288 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:25:36,288 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:25:36,289 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 9, 1, 1, 1] [2021-10-28 09:25:36,289 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [14, 13, 13, 10, 4, 1, 1] [2021-10-28 09:25:36,289 INFO L791 eck$LassoCheckResult]: Stem: 6731#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 6732#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6773#L12 assume !(10 == main_~i~0); 6748#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 6733#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6734#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6796#L12 assume !(10 == main_~i~0); 6795#L12-2 assume !(0 == main_~i~0); 6794#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6793#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6792#L12 assume !(10 == main_~i~0); 6791#L12-2 assume !(0 == main_~i~0); 6790#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6789#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6788#L12 assume !(10 == main_~i~0); 6787#L12-2 assume !(0 == main_~i~0); 6786#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6785#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6784#L12 assume !(10 == main_~i~0); 6783#L12-2 assume !(0 == main_~i~0); 6782#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6781#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6780#L12 assume !(10 == main_~i~0); 6779#L12-2 assume !(0 == main_~i~0); 6777#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6775#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6770#L12 assume !(10 == main_~i~0); 6769#L12-2 assume !(0 == main_~i~0); 6767#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6765#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6763#L12 assume !(10 == main_~i~0); 6761#L12-2 assume !(0 == main_~i~0); 6759#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6757#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6755#L12 assume !(10 == main_~i~0); 6753#L12-2 assume !(0 == main_~i~0); 6742#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6750#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6749#L12 assume !(10 == main_~i~0); 6740#L12-2 assume !(0 == main_~i~0); 6741#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6797#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6774#L12 assume 10 == main_~i~0;main_~up~0 := 0; 6723#L12-2 [2021-10-28 09:25:36,289 INFO L793 eck$LassoCheckResult]: Loop: 6723#L12-2 assume !(0 == main_~i~0); 6724#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 6768#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6766#L12 assume !(10 == main_~i~0); 6764#L12-2 assume !(0 == main_~i~0); 6762#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 6760#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6758#L12 assume !(10 == main_~i~0); 6756#L12-2 assume !(0 == main_~i~0); 6754#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 6752#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6751#L12 assume !(10 == main_~i~0); 6745#L12-2 assume !(0 == main_~i~0); 6747#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 6746#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6743#L12 assume !(10 == main_~i~0); 6738#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 6737#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6727#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6728#L12 assume !(10 == main_~i~0); 6735#L12-2 assume !(0 == main_~i~0); 6739#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6842#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6841#L12 assume !(10 == main_~i~0); 6840#L12-2 assume !(0 == main_~i~0); 6839#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6838#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6837#L12 assume !(10 == main_~i~0); 6836#L12-2 assume !(0 == main_~i~0); 6835#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6834#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6833#L12 assume !(10 == main_~i~0); 6832#L12-2 assume !(0 == main_~i~0); 6831#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6830#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6829#L12 assume !(10 == main_~i~0); 6828#L12-2 assume !(0 == main_~i~0); 6827#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6826#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6825#L12 assume !(10 == main_~i~0); 6824#L12-2 assume !(0 == main_~i~0); 6823#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6822#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6821#L12 assume !(10 == main_~i~0); 6820#L12-2 assume !(0 == main_~i~0); 6819#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6818#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6817#L12 assume !(10 == main_~i~0); 6816#L12-2 assume !(0 == main_~i~0); 6815#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6814#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6812#L12 assume !(10 == main_~i~0); 6809#L12-2 assume !(0 == main_~i~0); 6810#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6813#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6811#L12 assume 10 == main_~i~0;main_~up~0 := 0; 6723#L12-2 [2021-10-28 09:25:36,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:36,290 INFO L85 PathProgramCache]: Analyzing trace with hash 180435263, now seen corresponding path program 10 times [2021-10-28 09:25:36,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:36,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107368638] [2021-10-28 09:25:36,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:36,291 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:36,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:36,298 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:25:36,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:36,305 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:25:36,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:36,305 INFO L85 PathProgramCache]: Analyzing trace with hash 805924487, now seen corresponding path program 11 times [2021-10-28 09:25:36,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:36,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926845779] [2021-10-28 09:25:36,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:36,306 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:36,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:36,314 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:25:36,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:36,321 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:25:36,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:36,322 INFO L85 PathProgramCache]: Analyzing trace with hash 329635269, now seen corresponding path program 3 times [2021-10-28 09:25:36,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:36,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631199836] [2021-10-28 09:25:36,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:36,323 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:36,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:36,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 753 proven. 28 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2021-10-28 09:25:36,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:25:36,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631199836] [2021-10-28 09:25:36,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631199836] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:36,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251210898] [2021-10-28 09:25:36,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:25:36,373 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:25:36,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:36,376 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:25:36,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2021-10-28 09:25:36,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2021-10-28 09:25:36,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:25:36,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:25:36,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:36,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 753 proven. 28 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2021-10-28 09:25:36,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251210898] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:36,911 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:25:36,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-28 09:25:36,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469664639] [2021-10-28 09:25:37,199 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:25:37,199 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:25:37,200 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:25:37,200 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:25:37,200 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:25:37,200 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:37,200 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:25:37,200 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:25:37,200 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration20_Loop [2021-10-28 09:25:37,200 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:25:37,200 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:25:37,201 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:37,203 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:37,206 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:37,208 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:37,277 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:25:37,277 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:25:37,278 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:37,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:37,279 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:37,282 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:25:37,282 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:37,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (85)] Waiting until timeout for monitored process [2021-10-28 09:25:37,312 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:25:37,312 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_17=1} Honda state: {v_rep~unnamed0~0~true_17=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:25:37,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (85)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:37,356 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:37,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:37,358 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:37,361 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:25:37,361 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:37,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (86)] Waiting until timeout for monitored process [2021-10-28 09:25:37,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (86)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:37,418 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:37,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:37,419 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:37,422 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:25:37,423 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:37,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Waiting until timeout for monitored process [2021-10-28 09:25:37,437 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:25:37,457 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Ended with exit code 0 [2021-10-28 09:25:37,457 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:25:37,457 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:25:37,457 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:25:37,457 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:25:37,457 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:25:37,457 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:37,457 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:25:37,458 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:25:37,458 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration20_Loop [2021-10-28 09:25:37,458 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:25:37,458 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:25:37,458 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:37,463 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:37,465 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:37,468 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:37,516 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:25:37,517 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:25:37,517 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:37,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:37,518 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:37,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Waiting until timeout for monitored process [2021-10-28 09:25:37,519 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 [2021-10-28 09:25:37,526 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:25:37,526 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:25:37,526 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:25:37,526 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:25:37,526 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:25:37,527 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:25:37,527 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:25:37,528 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:25:37,530 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 09:25:37,531 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 09:25:37,531 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:37,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:37,532 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:37,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (89)] Waiting until timeout for monitored process [2021-10-28 09:25:37,533 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:25:37,533 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:25:37,533 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:25:37,533 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 7 Supporting invariants [] [2021-10-28 09:25:37,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:37,553 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:25:37,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:37,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:37,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:25:37,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:37,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:37,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:25:37,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:37,902 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 193 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-10-28 09:25:37,903 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 [2021-10-28 09:25:37,903 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 120 states and 132 transitions. cyclomatic complexity: 16 Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 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) [2021-10-28 09:25:38,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (89)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:38,139 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 120 states and 132 transitions. cyclomatic complexity: 16. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 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 549 states and 601 transitions. Complement of second has 23 states. [2021-10-28 09:25:38,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 1 stem states 10 non-accepting loop states 1 accepting loop states [2021-10-28 09:25:38,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 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) [2021-10-28 09:25:38,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 53 transitions. [2021-10-28 09:25:38,141 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 53 transitions. Stem has 43 letters. Loop has 56 letters. [2021-10-28 09:25:38,141 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:25:38,141 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 53 transitions. Stem has 99 letters. Loop has 56 letters. [2021-10-28 09:25:38,142 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:25:38,142 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 53 transitions. Stem has 43 letters. Loop has 112 letters. [2021-10-28 09:25:38,143 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:25:38,143 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 549 states and 601 transitions. [2021-10-28 09:25:38,147 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 61 [2021-10-28 09:25:38,151 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 549 states to 434 states and 475 transitions. [2021-10-28 09:25:38,151 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 85 [2021-10-28 09:25:38,151 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 88 [2021-10-28 09:25:38,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 434 states and 475 transitions. [2021-10-28 09:25:38,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:25:38,152 INFO L681 BuchiCegarLoop]: Abstraction has 434 states and 475 transitions. [2021-10-28 09:25:38,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states and 475 transitions. [2021-10-28 09:25:38,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 334. [2021-10-28 09:25:38,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 334 states have (on average 1.0748502994011977) internal successors, (359), 333 states have internal predecessors, (359), 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) [2021-10-28 09:25:38,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 359 transitions. [2021-10-28 09:25:38,167 INFO L704 BuchiCegarLoop]: Abstraction has 334 states and 359 transitions. [2021-10-28 09:25:38,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:25:38,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:25:38,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:25:38,168 INFO L87 Difference]: Start difference. First operand 334 states and 359 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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) [2021-10-28 09:25:38,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:25:38,198 INFO L93 Difference]: Finished difference Result 261 states and 286 transitions. [2021-10-28 09:25:38,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:25:38,198 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 261 states and 286 transitions. [2021-10-28 09:25:38,200 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 63 [2021-10-28 09:25:38,202 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 261 states to 227 states and 252 transitions. [2021-10-28 09:25:38,202 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 57 [2021-10-28 09:25:38,202 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2021-10-28 09:25:38,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 227 states and 252 transitions. [2021-10-28 09:25:38,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:25:38,203 INFO L681 BuchiCegarLoop]: Abstraction has 227 states and 252 transitions. [2021-10-28 09:25:38,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states and 252 transitions. [2021-10-28 09:25:38,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 128. [2021-10-28 09:25:38,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 128 states have (on average 1.1015625) internal successors, (141), 127 states have internal predecessors, (141), 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) [2021-10-28 09:25:38,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 141 transitions. [2021-10-28 09:25:38,207 INFO L704 BuchiCegarLoop]: Abstraction has 128 states and 141 transitions. [2021-10-28 09:25:38,207 INFO L587 BuchiCegarLoop]: Abstraction has 128 states and 141 transitions. [2021-10-28 09:25:38,207 INFO L425 BuchiCegarLoop]: ======== Iteration 21============ [2021-10-28 09:25:38,207 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 128 states and 141 transitions. [2021-10-28 09:25:38,208 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 61 [2021-10-28 09:25:38,208 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:25:38,208 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:25:38,209 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 9, 1, 1, 1] [2021-10-28 09:25:38,209 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [15, 14, 14, 10, 5, 1, 1] [2021-10-28 09:25:38,209 INFO L791 eck$LassoCheckResult]: Stem: 8644#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 8645#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8698#L12 assume !(10 == main_~i~0); 8665#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 8650#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8651#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8717#L12 assume !(10 == main_~i~0); 8716#L12-2 assume !(0 == main_~i~0); 8715#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8714#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8713#L12 assume !(10 == main_~i~0); 8712#L12-2 assume !(0 == main_~i~0); 8711#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8710#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8709#L12 assume !(10 == main_~i~0); 8708#L12-2 assume !(0 == main_~i~0); 8707#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8706#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8705#L12 assume !(10 == main_~i~0); 8704#L12-2 assume !(0 == main_~i~0); 8702#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8700#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8695#L12 assume !(10 == main_~i~0); 8694#L12-2 assume !(0 == main_~i~0); 8692#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8690#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8688#L12 assume !(10 == main_~i~0); 8686#L12-2 assume !(0 == main_~i~0); 8684#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8682#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8680#L12 assume !(10 == main_~i~0); 8678#L12-2 assume !(0 == main_~i~0); 8676#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8674#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8672#L12 assume !(10 == main_~i~0); 8670#L12-2 assume !(0 == main_~i~0); 8659#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8667#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8666#L12 assume !(10 == main_~i~0); 8657#L12-2 assume !(0 == main_~i~0); 8658#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8718#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8699#L12 assume 10 == main_~i~0;main_~up~0 := 0; 8640#L12-2 [2021-10-28 09:25:38,210 INFO L793 eck$LassoCheckResult]: Loop: 8640#L12-2 assume !(0 == main_~i~0); 8641#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8693#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8691#L12 assume !(10 == main_~i~0); 8689#L12-2 assume !(0 == main_~i~0); 8687#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8685#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8683#L12 assume !(10 == main_~i~0); 8681#L12-2 assume !(0 == main_~i~0); 8679#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8677#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8675#L12 assume !(10 == main_~i~0); 8673#L12-2 assume !(0 == main_~i~0); 8671#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8669#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8668#L12 assume !(10 == main_~i~0); 8662#L12-2 assume !(0 == main_~i~0); 8664#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8663#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8660#L12 assume !(10 == main_~i~0); 8655#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 8654#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8646#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8647#L12 assume !(10 == main_~i~0); 8652#L12-2 assume !(0 == main_~i~0); 8656#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8767#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8766#L12 assume !(10 == main_~i~0); 8765#L12-2 assume !(0 == main_~i~0); 8764#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8763#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8762#L12 assume !(10 == main_~i~0); 8761#L12-2 assume !(0 == main_~i~0); 8760#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8759#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8758#L12 assume !(10 == main_~i~0); 8757#L12-2 assume !(0 == main_~i~0); 8756#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8755#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8754#L12 assume !(10 == main_~i~0); 8753#L12-2 assume !(0 == main_~i~0); 8752#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8751#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8750#L12 assume !(10 == main_~i~0); 8749#L12-2 assume !(0 == main_~i~0); 8748#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8747#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8746#L12 assume !(10 == main_~i~0); 8745#L12-2 assume !(0 == main_~i~0); 8744#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8743#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8742#L12 assume !(10 == main_~i~0); 8741#L12-2 assume !(0 == main_~i~0); 8740#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8738#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8736#L12 assume !(10 == main_~i~0); 8734#L12-2 assume !(0 == main_~i~0); 8735#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8739#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8737#L12 assume 10 == main_~i~0;main_~up~0 := 0; 8640#L12-2 [2021-10-28 09:25:38,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:38,210 INFO L85 PathProgramCache]: Analyzing trace with hash 180435263, now seen corresponding path program 11 times [2021-10-28 09:25:38,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:38,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254058147] [2021-10-28 09:25:38,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:38,211 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:38,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:38,227 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:25:38,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:38,234 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:25:38,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:38,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1151943822, now seen corresponding path program 12 times [2021-10-28 09:25:38,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:38,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100141205] [2021-10-28 09:25:38,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:38,235 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:38,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:38,245 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:25:38,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:38,253 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:25:38,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:38,254 INFO L85 PathProgramCache]: Analyzing trace with hash 533812144, now seen corresponding path program 4 times [2021-10-28 09:25:38,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:38,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135215978] [2021-10-28 09:25:38,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:38,254 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:38,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:38,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1250 backedges. 834 proven. 45 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2021-10-28 09:25:38,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:25:38,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135215978] [2021-10-28 09:25:38,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135215978] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:38,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705801956] [2021-10-28 09:25:38,317 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 09:25:38,317 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:25:38,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:38,320 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:25:38,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2021-10-28 09:25:38,825 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 09:25:38,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:25:38,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:25:38,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:39,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1250 backedges. 834 proven. 45 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2021-10-28 09:25:39,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705801956] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:39,072 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:25:39,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-10-28 09:25:39,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242174995] [2021-10-28 09:25:39,452 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:25:39,453 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:25:39,453 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:25:39,453 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:25:39,453 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:25:39,453 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:39,453 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:25:39,453 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:25:39,453 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration21_Loop [2021-10-28 09:25:39,453 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:25:39,453 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:25:39,454 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:39,464 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:39,466 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:39,468 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:39,522 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:25:39,522 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:25:39,523 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:39,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:39,524 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:39,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (91)] Waiting until timeout for monitored process [2021-10-28 09:25:39,525 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:25:39,525 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:39,538 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:25:39,538 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=0} Honda state: {ULTIMATE.start_main_~up~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:25:39,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (91)] Ended with exit code 0 [2021-10-28 09:25:39,558 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:39,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:39,559 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:39,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (92)] Waiting until timeout for monitored process [2021-10-28 09:25:39,560 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:25:39,560 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:39,573 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:25:39,573 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_19=0} Honda state: {v_rep~unnamed0~0~false_19=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:25:39,593 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (92)] Ended with exit code 0 [2021-10-28 09:25:39,593 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:39,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:39,594 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:39,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (93)] Waiting until timeout for monitored process [2021-10-28 09:25:39,596 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:25:39,596 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:39,608 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:25:39,608 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_19=1} Honda state: {v_rep~unnamed0~0~true_19=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:25:39,628 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (93)] Ended with exit code 0 [2021-10-28 09:25:39,629 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:39,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:39,630 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:39,631 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:25:39,631 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:39,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (94)] Waiting until timeout for monitored process [2021-10-28 09:25:39,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (94)] Ended with exit code 0 [2021-10-28 09:25:39,684 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:39,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:39,685 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:39,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (95)] Waiting until timeout for monitored process [2021-10-28 09:25:39,686 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:25:39,686 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:39,720 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:25:39,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (95)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:39,722 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:25:39,722 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:25:39,722 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:25:39,722 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:25:39,722 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:25:39,723 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:39,723 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:25:39,723 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:25:39,723 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration21_Loop [2021-10-28 09:25:39,723 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:25:39,723 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:25:39,724 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:39,733 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:39,735 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:39,739 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:39,792 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:25:39,792 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:25:39,792 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:39,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:39,793 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:39,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (96)] Waiting until timeout for monitored process [2021-10-28 09:25:39,794 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 [2021-10-28 09:25:39,801 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:25:39,802 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:25:39,802 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:25:39,802 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:25:39,803 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:25:39,803 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:25:39,827 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:25:39,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (96)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:39,860 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:39,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:39,862 INFO L229 MonitoredProcess]: Starting monitored process 97 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:39,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (97)] Waiting until timeout for monitored process [2021-10-28 09:25:39,864 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 [2021-10-28 09:25:39,871 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:25:39,871 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:25:39,871 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:25:39,871 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:25:39,872 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:25:39,872 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:25:39,875 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:25:39,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (97)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:39,894 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:39,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:39,895 INFO L229 MonitoredProcess]: Starting monitored process 98 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:39,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (98)] Waiting until timeout for monitored process [2021-10-28 09:25:39,897 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 [2021-10-28 09:25:39,904 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:25:39,904 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:25:39,904 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:25:39,904 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-28 09:25:39,904 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:25:39,905 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-28 09:25:39,905 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:25:39,907 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:25:39,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (98)] Ended with exit code 0 [2021-10-28 09:25:39,926 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:39,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:39,927 INFO L229 MonitoredProcess]: Starting monitored process 99 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:39,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (99)] Waiting until timeout for monitored process [2021-10-28 09:25:39,928 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 [2021-10-28 09:25:39,935 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:25:39,935 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:25:39,935 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:25:39,936 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:25:39,936 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:25:39,936 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:25:39,936 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:25:39,938 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:25:39,939 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 09:25:39,939 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 09:25:39,940 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:39,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:39,941 INFO L229 MonitoredProcess]: Starting monitored process 100 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:39,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (100)] Waiting until timeout for monitored process [2021-10-28 09:25:39,942 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:25:39,942 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:25:39,942 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:25:39,942 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 15 Supporting invariants [] [2021-10-28 09:25:39,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (99)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:39,968 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:25:39,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:39,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:39,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:25:39,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:40,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (100)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:40,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:40,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:25:40,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:40,381 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 249 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-10-28 09:25:40,382 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 7 loop predicates [2021-10-28 09:25:40,382 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 128 states and 141 transitions. cyclomatic complexity: 17 Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 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) [2021-10-28 09:25:40,675 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 128 states and 141 transitions. cyclomatic complexity: 17. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 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 653 states and 718 transitions. Complement of second has 27 states. [2021-10-28 09:25:40,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 1 stem states 12 non-accepting loop states 1 accepting loop states [2021-10-28 09:25:40,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 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) [2021-10-28 09:25:40,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 62 transitions. [2021-10-28 09:25:40,676 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 62 transitions. Stem has 43 letters. Loop has 60 letters. [2021-10-28 09:25:40,677 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:25:40,677 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 62 transitions. Stem has 103 letters. Loop has 60 letters. [2021-10-28 09:25:40,678 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:25:40,678 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 62 transitions. Stem has 43 letters. Loop has 120 letters. [2021-10-28 09:25:40,679 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:25:40,679 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 653 states and 718 transitions. [2021-10-28 09:25:40,688 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 65 [2021-10-28 09:25:40,692 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 653 states to 490 states and 539 transitions. [2021-10-28 09:25:40,692 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 82 [2021-10-28 09:25:40,692 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 85 [2021-10-28 09:25:40,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 490 states and 539 transitions. [2021-10-28 09:25:40,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:25:40,692 INFO L681 BuchiCegarLoop]: Abstraction has 490 states and 539 transitions. [2021-10-28 09:25:40,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states and 539 transitions. [2021-10-28 09:25:40,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 342. [2021-10-28 09:25:40,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 342 states have (on average 1.0760233918128654) internal successors, (368), 341 states have internal predecessors, (368), 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) [2021-10-28 09:25:40,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 368 transitions. [2021-10-28 09:25:40,701 INFO L704 BuchiCegarLoop]: Abstraction has 342 states and 368 transitions. [2021-10-28 09:25:40,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:25:40,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:25:40,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:25:40,701 INFO L87 Difference]: Start difference. First operand 342 states and 368 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 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) [2021-10-28 09:25:40,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:25:40,739 INFO L93 Difference]: Finished difference Result 289 states and 317 transitions. [2021-10-28 09:25:40,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:25:40,739 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 289 states and 317 transitions. [2021-10-28 09:25:40,741 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 67 [2021-10-28 09:25:40,743 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 289 states to 247 states and 275 transitions. [2021-10-28 09:25:40,743 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 57 [2021-10-28 09:25:40,743 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2021-10-28 09:25:40,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 247 states and 275 transitions. [2021-10-28 09:25:40,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:25:40,743 INFO L681 BuchiCegarLoop]: Abstraction has 247 states and 275 transitions. [2021-10-28 09:25:40,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states and 275 transitions. [2021-10-28 09:25:40,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 136. [2021-10-28 09:25:40,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 136 states have (on average 1.1029411764705883) internal successors, (150), 135 states have internal predecessors, (150), 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) [2021-10-28 09:25:40,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 150 transitions. [2021-10-28 09:25:40,747 INFO L704 BuchiCegarLoop]: Abstraction has 136 states and 150 transitions. [2021-10-28 09:25:40,747 INFO L587 BuchiCegarLoop]: Abstraction has 136 states and 150 transitions. [2021-10-28 09:25:40,747 INFO L425 BuchiCegarLoop]: ======== Iteration 22============ [2021-10-28 09:25:40,747 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 136 states and 150 transitions. [2021-10-28 09:25:40,748 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 65 [2021-10-28 09:25:40,748 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:25:40,748 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:25:40,749 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 9, 1, 1, 1] [2021-10-28 09:25:40,749 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [16, 15, 15, 10, 6, 1, 1] [2021-10-28 09:25:40,749 INFO L791 eck$LassoCheckResult]: Stem: 10742#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 10743#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10802#L12 assume !(10 == main_~i~0); 10763#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 10748#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10749#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10819#L12 assume !(10 == main_~i~0); 10818#L12-2 assume !(0 == main_~i~0); 10817#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10816#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10815#L12 assume !(10 == main_~i~0); 10814#L12-2 assume !(0 == main_~i~0); 10813#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10812#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10811#L12 assume !(10 == main_~i~0); 10810#L12-2 assume !(0 == main_~i~0); 10809#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10806#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10801#L12 assume !(10 == main_~i~0); 10800#L12-2 assume !(0 == main_~i~0); 10798#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10796#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10794#L12 assume !(10 == main_~i~0); 10792#L12-2 assume !(0 == main_~i~0); 10790#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10788#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10786#L12 assume !(10 == main_~i~0); 10784#L12-2 assume !(0 == main_~i~0); 10782#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10780#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10778#L12 assume !(10 == main_~i~0); 10776#L12-2 assume !(0 == main_~i~0); 10774#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10772#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10770#L12 assume !(10 == main_~i~0); 10768#L12-2 assume !(0 == main_~i~0); 10757#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10765#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10764#L12 assume !(10 == main_~i~0); 10755#L12-2 assume !(0 == main_~i~0); 10756#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10820#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10807#L12 assume 10 == main_~i~0;main_~up~0 := 0; 10738#L12-2 [2021-10-28 09:25:40,749 INFO L793 eck$LassoCheckResult]: Loop: 10738#L12-2 assume !(0 == main_~i~0); 10739#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 10799#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10797#L12 assume !(10 == main_~i~0); 10795#L12-2 assume !(0 == main_~i~0); 10793#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 10791#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10789#L12 assume !(10 == main_~i~0); 10787#L12-2 assume !(0 == main_~i~0); 10785#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 10783#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10781#L12 assume !(10 == main_~i~0); 10779#L12-2 assume !(0 == main_~i~0); 10777#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 10775#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10773#L12 assume !(10 == main_~i~0); 10771#L12-2 assume !(0 == main_~i~0); 10769#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 10767#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10766#L12 assume !(10 == main_~i~0); 10760#L12-2 assume !(0 == main_~i~0); 10762#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 10761#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10758#L12 assume !(10 == main_~i~0); 10753#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 10752#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10744#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10745#L12 assume !(10 == main_~i~0); 10750#L12-2 assume !(0 == main_~i~0); 10754#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10873#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10872#L12 assume !(10 == main_~i~0); 10871#L12-2 assume !(0 == main_~i~0); 10870#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10869#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10868#L12 assume !(10 == main_~i~0); 10867#L12-2 assume !(0 == main_~i~0); 10866#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10865#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10864#L12 assume !(10 == main_~i~0); 10863#L12-2 assume !(0 == main_~i~0); 10862#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10861#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10860#L12 assume !(10 == main_~i~0); 10859#L12-2 assume !(0 == main_~i~0); 10858#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10857#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10856#L12 assume !(10 == main_~i~0); 10855#L12-2 assume !(0 == main_~i~0); 10854#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10853#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10852#L12 assume !(10 == main_~i~0); 10851#L12-2 assume !(0 == main_~i~0); 10850#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10849#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10848#L12 assume !(10 == main_~i~0); 10847#L12-2 assume !(0 == main_~i~0); 10846#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10845#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10843#L12 assume !(10 == main_~i~0); 10840#L12-2 assume !(0 == main_~i~0); 10841#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10844#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10842#L12 assume 10 == main_~i~0;main_~up~0 := 0; 10738#L12-2 [2021-10-28 09:25:40,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:40,750 INFO L85 PathProgramCache]: Analyzing trace with hash 180435263, now seen corresponding path program 12 times [2021-10-28 09:25:40,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:40,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811605839] [2021-10-28 09:25:40,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:40,750 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:40,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:40,759 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:25:40,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:40,766 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:25:40,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:40,766 INFO L85 PathProgramCache]: Analyzing trace with hash 336435933, now seen corresponding path program 13 times [2021-10-28 09:25:40,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:40,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294473698] [2021-10-28 09:25:40,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:40,766 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:40,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:40,776 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:25:40,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:40,785 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:25:40,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:40,785 INFO L85 PathProgramCache]: Analyzing trace with hash 216392731, now seen corresponding path program 5 times [2021-10-28 09:25:40,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:40,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871089685] [2021-10-28 09:25:40,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:40,786 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:40,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:40,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 915 proven. 66 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2021-10-28 09:25:40,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:25:40,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871089685] [2021-10-28 09:25:40,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871089685] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:40,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904006857] [2021-10-28 09:25:40,852 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 09:25:40,852 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:25:40,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:40,856 INFO L229 MonitoredProcess]: Starting monitored process 101 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:25:40,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2021-10-28 09:25:41,269 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2021-10-28 09:25:41,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:25:41,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:25:41,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:41,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 915 proven. 66 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2021-10-28 09:25:41,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904006857] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:41,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:25:41,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-28 09:25:41,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62330669] [2021-10-28 09:25:41,890 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:25:41,890 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:25:41,890 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:25:41,891 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:25:41,891 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:25:41,891 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:41,891 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:25:41,891 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:25:41,891 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration22_Loop [2021-10-28 09:25:41,891 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:25:41,891 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:25:41,892 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:41,898 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:41,900 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:41,906 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:41,966 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:25:41,966 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:25:41,966 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:41,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:41,967 INFO L229 MonitoredProcess]: Starting monitored process 102 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:41,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (102)] Waiting until timeout for monitored process [2021-10-28 09:25:41,968 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:25:41,968 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:41,981 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:25:41,981 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=0} Honda state: {ULTIMATE.start_main_~up~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:25:42,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (102)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:42,001 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:42,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:42,002 INFO L229 MonitoredProcess]: Starting monitored process 103 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:42,003 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:25:42,004 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:42,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (103)] Waiting until timeout for monitored process [2021-10-28 09:25:42,016 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:25:42,016 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_21=0} Honda state: {v_rep~unnamed0~0~false_21=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:25:42,036 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (103)] Ended with exit code 0 [2021-10-28 09:25:42,036 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:42,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:42,037 INFO L229 MonitoredProcess]: Starting monitored process 104 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:42,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (104)] Waiting until timeout for monitored process [2021-10-28 09:25:42,038 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:25:42,038 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:42,065 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (104)] Ended with exit code 0 [2021-10-28 09:25:42,065 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:42,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:42,066 INFO L229 MonitoredProcess]: Starting monitored process 105 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:42,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (105)] Waiting until timeout for monitored process [2021-10-28 09:25:42,067 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:25:42,067 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:42,076 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:25:42,095 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (105)] Ended with exit code 0 [2021-10-28 09:25:42,095 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:25:42,095 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:25:42,095 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:25:42,095 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:25:42,096 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:25:42,096 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:42,096 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:25:42,096 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:25:42,096 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration22_Loop [2021-10-28 09:25:42,096 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:25:42,096 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:25:42,096 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:42,100 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:42,103 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:42,105 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:42,158 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:25:42,158 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:25:42,158 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:42,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:42,159 INFO L229 MonitoredProcess]: Starting monitored process 106 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:42,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (106)] Waiting until timeout for monitored process [2021-10-28 09:25:42,160 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 [2021-10-28 09:25:42,167 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:25:42,167 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:25:42,167 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:25:42,167 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-28 09:25:42,167 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:25:42,168 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-28 09:25:42,168 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:25:42,170 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:25:42,189 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (106)] Ended with exit code 0 [2021-10-28 09:25:42,189 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:42,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:42,190 INFO L229 MonitoredProcess]: Starting monitored process 107 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:42,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (107)] Waiting until timeout for monitored process [2021-10-28 09:25:42,191 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 [2021-10-28 09:25:42,198 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:25:42,198 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:25:42,198 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:25:42,198 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:25:42,200 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:25:42,200 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:25:42,213 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:25:42,232 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (107)] Ended with exit code 0 [2021-10-28 09:25:42,233 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:42,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:42,233 INFO L229 MonitoredProcess]: Starting monitored process 108 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:42,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (108)] Waiting until timeout for monitored process [2021-10-28 09:25:42,234 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 [2021-10-28 09:25:42,241 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:25:42,242 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:25:42,242 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:25:42,242 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:25:42,243 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:25:42,243 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:25:42,256 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:25:42,275 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (108)] Ended with exit code 0 [2021-10-28 09:25:42,276 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:42,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:42,277 INFO L229 MonitoredProcess]: Starting monitored process 109 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:42,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (109)] Waiting until timeout for monitored process [2021-10-28 09:25:42,278 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 [2021-10-28 09:25:42,285 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:25:42,285 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:25:42,285 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:25:42,285 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:25:42,285 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:25:42,286 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:25:42,286 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:25:42,288 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:25:42,290 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 09:25:42,290 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 09:25:42,290 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:42,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:42,291 INFO L229 MonitoredProcess]: Starting monitored process 110 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:42,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (110)] Waiting until timeout for monitored process [2021-10-28 09:25:42,292 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:25:42,292 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:25:42,292 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:25:42,292 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 8 Supporting invariants [] [2021-10-28 09:25:42,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (109)] Ended with exit code 0 [2021-10-28 09:25:42,314 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:25:42,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:42,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:42,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:25:42,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:42,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:42,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 09:25:42,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:42,699 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 309 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-10-28 09:25:42,700 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 8 loop predicates [2021-10-28 09:25:42,700 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 136 states and 150 transitions. cyclomatic complexity: 18 Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 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) [2021-10-28 09:25:42,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (110)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:42,990 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 136 states and 150 transitions. cyclomatic complexity: 18. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 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 773 states and 853 transitions. Complement of second has 31 states. [2021-10-28 09:25:42,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 16 states 1 stem states 14 non-accepting loop states 1 accepting loop states [2021-10-28 09:25:42,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 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) [2021-10-28 09:25:42,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 71 transitions. [2021-10-28 09:25:42,991 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 71 transitions. Stem has 43 letters. Loop has 64 letters. [2021-10-28 09:25:42,992 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:25:42,992 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 71 transitions. Stem has 107 letters. Loop has 64 letters. [2021-10-28 09:25:42,992 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:25:42,993 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 71 transitions. Stem has 43 letters. Loop has 128 letters. [2021-10-28 09:25:42,994 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:25:42,994 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 773 states and 853 transitions. [2021-10-28 09:25:42,999 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 69 [2021-10-28 09:25:43,004 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 773 states to 554 states and 612 transitions. [2021-10-28 09:25:43,004 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 79 [2021-10-28 09:25:43,004 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 82 [2021-10-28 09:25:43,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 554 states and 612 transitions. [2021-10-28 09:25:43,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:25:43,005 INFO L681 BuchiCegarLoop]: Abstraction has 554 states and 612 transitions. [2021-10-28 09:25:43,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states and 612 transitions. [2021-10-28 09:25:43,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 350. [2021-10-28 09:25:43,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 350 states have (on average 1.0771428571428572) internal successors, (377), 349 states have internal predecessors, (377), 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) [2021-10-28 09:25:43,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 377 transitions. [2021-10-28 09:25:43,013 INFO L704 BuchiCegarLoop]: Abstraction has 350 states and 377 transitions. [2021-10-28 09:25:43,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:25:43,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:25:43,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:25:43,014 INFO L87 Difference]: Start difference. First operand 350 states and 377 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 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) [2021-10-28 09:25:43,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:25:43,057 INFO L93 Difference]: Finished difference Result 317 states and 348 transitions. [2021-10-28 09:25:43,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:25:43,057 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 317 states and 348 transitions. [2021-10-28 09:25:43,060 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 71 [2021-10-28 09:25:43,062 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 317 states to 267 states and 298 transitions. [2021-10-28 09:25:43,062 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 57 [2021-10-28 09:25:43,062 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2021-10-28 09:25:43,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 267 states and 298 transitions. [2021-10-28 09:25:43,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:25:43,063 INFO L681 BuchiCegarLoop]: Abstraction has 267 states and 298 transitions. [2021-10-28 09:25:43,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states and 298 transitions. [2021-10-28 09:25:43,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 144. [2021-10-28 09:25:43,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 144 states have (on average 1.1041666666666667) internal successors, (159), 143 states have internal predecessors, (159), 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) [2021-10-28 09:25:43,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 159 transitions. [2021-10-28 09:25:43,068 INFO L704 BuchiCegarLoop]: Abstraction has 144 states and 159 transitions. [2021-10-28 09:25:43,068 INFO L587 BuchiCegarLoop]: Abstraction has 144 states and 159 transitions. [2021-10-28 09:25:43,068 INFO L425 BuchiCegarLoop]: ======== Iteration 23============ [2021-10-28 09:25:43,068 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 144 states and 159 transitions. [2021-10-28 09:25:43,069 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 69 [2021-10-28 09:25:43,069 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:25:43,069 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:25:43,075 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 9, 1, 1, 1] [2021-10-28 09:25:43,076 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [17, 16, 16, 10, 7, 1, 1] [2021-10-28 09:25:43,076 INFO L791 eck$LassoCheckResult]: Stem: 13041#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 13042#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13108#L12 assume !(10 == main_~i~0); 13058#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 13043#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13044#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13118#L12 assume !(10 == main_~i~0); 13117#L12-2 assume !(0 == main_~i~0); 13116#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13115#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13114#L12 assume !(10 == main_~i~0); 13112#L12-2 assume !(0 == main_~i~0); 13109#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13105#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13104#L12 assume !(10 == main_~i~0); 13103#L12-2 assume !(0 == main_~i~0); 13101#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13099#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13097#L12 assume !(10 == main_~i~0); 13095#L12-2 assume !(0 == main_~i~0); 13093#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13091#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13089#L12 assume !(10 == main_~i~0); 13087#L12-2 assume !(0 == main_~i~0); 13085#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13083#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13081#L12 assume !(10 == main_~i~0); 13079#L12-2 assume !(0 == main_~i~0); 13077#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13075#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13073#L12 assume !(10 == main_~i~0); 13071#L12-2 assume !(0 == main_~i~0); 13069#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13067#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13065#L12 assume !(10 == main_~i~0); 13063#L12-2 assume !(0 == main_~i~0); 13051#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13060#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13059#L12 assume !(10 == main_~i~0); 13049#L12-2 assume !(0 == main_~i~0); 13050#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13119#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13110#L12 assume 10 == main_~i~0;main_~up~0 := 0; 13033#L12-2 [2021-10-28 09:25:43,076 INFO L793 eck$LassoCheckResult]: Loop: 13033#L12-2 assume !(0 == main_~i~0); 13034#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13102#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13100#L12 assume !(10 == main_~i~0); 13098#L12-2 assume !(0 == main_~i~0); 13096#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13094#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13092#L12 assume !(10 == main_~i~0); 13090#L12-2 assume !(0 == main_~i~0); 13088#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13086#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13084#L12 assume !(10 == main_~i~0); 13082#L12-2 assume !(0 == main_~i~0); 13080#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13078#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13076#L12 assume !(10 == main_~i~0); 13074#L12-2 assume !(0 == main_~i~0); 13072#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13070#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13068#L12 assume !(10 == main_~i~0); 13066#L12-2 assume !(0 == main_~i~0); 13064#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13062#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13061#L12 assume !(10 == main_~i~0); 13055#L12-2 assume !(0 == main_~i~0); 13057#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13056#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13053#L12 assume !(10 == main_~i~0); 13048#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 13047#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13037#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13038#L12 assume !(10 == main_~i~0); 13045#L12-2 assume !(0 == main_~i~0); 13052#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13176#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13175#L12 assume !(10 == main_~i~0); 13174#L12-2 assume !(0 == main_~i~0); 13173#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13172#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13171#L12 assume !(10 == main_~i~0); 13170#L12-2 assume !(0 == main_~i~0); 13169#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13168#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13167#L12 assume !(10 == main_~i~0); 13166#L12-2 assume !(0 == main_~i~0); 13165#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13164#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13163#L12 assume !(10 == main_~i~0); 13162#L12-2 assume !(0 == main_~i~0); 13161#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13160#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13159#L12 assume !(10 == main_~i~0); 13158#L12-2 assume !(0 == main_~i~0); 13157#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13156#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13155#L12 assume !(10 == main_~i~0); 13154#L12-2 assume !(0 == main_~i~0); 13153#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13152#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13151#L12 assume !(10 == main_~i~0); 13150#L12-2 assume !(0 == main_~i~0); 13149#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13147#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13145#L12 assume !(10 == main_~i~0); 13143#L12-2 assume !(0 == main_~i~0); 13144#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13148#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13146#L12 assume 10 == main_~i~0;main_~up~0 := 0; 13033#L12-2 [2021-10-28 09:25:43,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:43,077 INFO L85 PathProgramCache]: Analyzing trace with hash 180435263, now seen corresponding path program 13 times [2021-10-28 09:25:43,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:43,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468947732] [2021-10-28 09:25:43,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:43,077 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:43,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:43,092 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:25:43,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:43,099 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:25:43,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:43,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1847643336, now seen corresponding path program 14 times [2021-10-28 09:25:43,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:43,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763519160] [2021-10-28 09:25:43,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:43,100 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:43,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:43,110 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:25:43,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:43,120 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:25:43,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:43,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1125533446, now seen corresponding path program 6 times [2021-10-28 09:25:43,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:43,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591543754] [2021-10-28 09:25:43,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:43,121 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:43,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:43,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 996 proven. 91 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2021-10-28 09:25:43,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:25:43,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591543754] [2021-10-28 09:25:43,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591543754] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:43,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049696119] [2021-10-28 09:25:43,216 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 09:25:43,216 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:25:43,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:43,217 INFO L229 MonitoredProcess]: Starting monitored process 111 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:25:43,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2021-10-28 09:25:43,740 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2021-10-28 09:25:43,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:25:43,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:25:43,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:44,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 996 proven. 91 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2021-10-28 09:25:44,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049696119] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:44,002 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:25:44,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-10-28 09:25:44,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38136618] [2021-10-28 09:25:44,350 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:25:44,350 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:25:44,350 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:25:44,350 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:25:44,350 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:25:44,350 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:44,351 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:25:44,351 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:25:44,351 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration23_Loop [2021-10-28 09:25:44,351 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:25:44,351 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:25:44,351 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:44,355 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:44,357 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:44,359 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:44,409 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:25:44,409 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:25:44,409 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:44,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:44,410 INFO L229 MonitoredProcess]: Starting monitored process 112 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:44,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (112)] Waiting until timeout for monitored process [2021-10-28 09:25:44,412 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:25:44,412 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:44,440 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (112)] Ended with exit code 0 [2021-10-28 09:25:44,440 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:44,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:44,441 INFO L229 MonitoredProcess]: Starting monitored process 113 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:44,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (113)] Waiting until timeout for monitored process [2021-10-28 09:25:44,442 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:25:44,442 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:44,451 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:25:44,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (113)] Ended with exit code 0 [2021-10-28 09:25:44,471 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:25:44,471 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:25:44,471 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:25:44,471 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:25:44,471 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:25:44,471 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:44,471 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:25:44,471 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:25:44,472 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration23_Loop [2021-10-28 09:25:44,472 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:25:44,472 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:25:44,472 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:44,476 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:44,478 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:44,480 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:44,528 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:25:44,528 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:25:44,528 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:44,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:44,529 INFO L229 MonitoredProcess]: Starting monitored process 114 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:44,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (114)] Waiting until timeout for monitored process [2021-10-28 09:25:44,531 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 [2021-10-28 09:25:44,538 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:25:44,538 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:25:44,538 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:25:44,538 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:25:44,538 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:25:44,539 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:25:44,539 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:25:44,541 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:25:44,542 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 09:25:44,542 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 09:25:44,542 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:44,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:44,544 INFO L229 MonitoredProcess]: Starting monitored process 115 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:44,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (115)] Waiting until timeout for monitored process [2021-10-28 09:25:44,544 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:25:44,545 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:25:44,545 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:25:44,545 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 17 Supporting invariants [] [2021-10-28 09:25:44,564 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (114)] Ended with exit code 0 [2021-10-28 09:25:44,565 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:25:44,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:44,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:44,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:25:44,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:44,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:44,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 09:25:44,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:44,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (115)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:44,999 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 373 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-10-28 09:25:44,999 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 9 loop predicates [2021-10-28 09:25:44,999 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 144 states and 159 transitions. cyclomatic complexity: 19 Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 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) [2021-10-28 09:25:45,411 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 144 states and 159 transitions. cyclomatic complexity: 19. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 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 909 states and 1006 transitions. Complement of second has 35 states. [2021-10-28 09:25:45,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 18 states 1 stem states 16 non-accepting loop states 1 accepting loop states [2021-10-28 09:25:45,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 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) [2021-10-28 09:25:45,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 80 transitions. [2021-10-28 09:25:45,412 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 18 states and 80 transitions. Stem has 43 letters. Loop has 68 letters. [2021-10-28 09:25:45,413 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:25:45,413 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 18 states and 80 transitions. Stem has 111 letters. Loop has 68 letters. [2021-10-28 09:25:45,414 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:25:45,414 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 18 states and 80 transitions. Stem has 43 letters. Loop has 136 letters. [2021-10-28 09:25:45,417 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:25:45,417 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 909 states and 1006 transitions. [2021-10-28 09:25:45,424 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 73 [2021-10-28 09:25:45,428 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 909 states to 626 states and 694 transitions. [2021-10-28 09:25:45,428 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 76 [2021-10-28 09:25:45,428 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 79 [2021-10-28 09:25:45,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 626 states and 694 transitions. [2021-10-28 09:25:45,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:25:45,429 INFO L681 BuchiCegarLoop]: Abstraction has 626 states and 694 transitions. [2021-10-28 09:25:45,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states and 694 transitions. [2021-10-28 09:25:45,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 358. [2021-10-28 09:25:45,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 358 states have (on average 1.0782122905027933) internal successors, (386), 357 states have internal predecessors, (386), 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) [2021-10-28 09:25:45,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 386 transitions. [2021-10-28 09:25:45,438 INFO L704 BuchiCegarLoop]: Abstraction has 358 states and 386 transitions. [2021-10-28 09:25:45,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:25:45,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:25:45,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:25:45,439 INFO L87 Difference]: Start difference. First operand 358 states and 386 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 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) [2021-10-28 09:25:45,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:25:45,492 INFO L93 Difference]: Finished difference Result 345 states and 379 transitions. [2021-10-28 09:25:45,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:25:45,493 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 345 states and 379 transitions. [2021-10-28 09:25:45,496 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 75 [2021-10-28 09:25:45,498 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 345 states to 287 states and 321 transitions. [2021-10-28 09:25:45,499 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 57 [2021-10-28 09:25:45,499 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2021-10-28 09:25:45,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 287 states and 321 transitions. [2021-10-28 09:25:45,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:25:45,499 INFO L681 BuchiCegarLoop]: Abstraction has 287 states and 321 transitions. [2021-10-28 09:25:45,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states and 321 transitions. [2021-10-28 09:25:45,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 152. [2021-10-28 09:25:45,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 152 states have (on average 1.105263157894737) internal successors, (168), 151 states have internal predecessors, (168), 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) [2021-10-28 09:25:45,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 168 transitions. [2021-10-28 09:25:45,513 INFO L704 BuchiCegarLoop]: Abstraction has 152 states and 168 transitions. [2021-10-28 09:25:45,513 INFO L587 BuchiCegarLoop]: Abstraction has 152 states and 168 transitions. [2021-10-28 09:25:45,513 INFO L425 BuchiCegarLoop]: ======== Iteration 24============ [2021-10-28 09:25:45,513 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 152 states and 168 transitions. [2021-10-28 09:25:45,514 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 73 [2021-10-28 09:25:45,514 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:25:45,514 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:25:45,515 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 9, 1, 1, 1] [2021-10-28 09:25:45,516 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [18, 17, 17, 10, 8, 1, 1] [2021-10-28 09:25:45,516 INFO L791 eck$LassoCheckResult]: Stem: 15549#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 15550#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15623#L12 assume !(10 == main_~i~0); 15566#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 15551#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15552#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15630#L12 assume !(10 == main_~i~0); 15629#L12-2 assume !(0 == main_~i~0); 15627#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15625#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15620#L12 assume !(10 == main_~i~0); 15619#L12-2 assume !(0 == main_~i~0); 15617#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15615#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15613#L12 assume !(10 == main_~i~0); 15611#L12-2 assume !(0 == main_~i~0); 15609#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15607#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15605#L12 assume !(10 == main_~i~0); 15603#L12-2 assume !(0 == main_~i~0); 15601#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15599#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15597#L12 assume !(10 == main_~i~0); 15595#L12-2 assume !(0 == main_~i~0); 15593#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15591#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15589#L12 assume !(10 == main_~i~0); 15587#L12-2 assume !(0 == main_~i~0); 15585#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15583#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15581#L12 assume !(10 == main_~i~0); 15579#L12-2 assume !(0 == main_~i~0); 15577#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15575#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15573#L12 assume !(10 == main_~i~0); 15571#L12-2 assume !(0 == main_~i~0); 15560#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15568#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15567#L12 assume !(10 == main_~i~0); 15558#L12-2 assume !(0 == main_~i~0); 15559#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15631#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15624#L12 assume 10 == main_~i~0;main_~up~0 := 0; 15541#L12-2 [2021-10-28 09:25:45,516 INFO L793 eck$LassoCheckResult]: Loop: 15541#L12-2 assume !(0 == main_~i~0); 15542#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 15618#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15616#L12 assume !(10 == main_~i~0); 15614#L12-2 assume !(0 == main_~i~0); 15612#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 15610#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15608#L12 assume !(10 == main_~i~0); 15606#L12-2 assume !(0 == main_~i~0); 15604#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 15602#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15600#L12 assume !(10 == main_~i~0); 15598#L12-2 assume !(0 == main_~i~0); 15596#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 15594#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15592#L12 assume !(10 == main_~i~0); 15590#L12-2 assume !(0 == main_~i~0); 15588#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 15586#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15584#L12 assume !(10 == main_~i~0); 15582#L12-2 assume !(0 == main_~i~0); 15580#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 15578#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15576#L12 assume !(10 == main_~i~0); 15574#L12-2 assume !(0 == main_~i~0); 15572#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 15570#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15569#L12 assume !(10 == main_~i~0); 15563#L12-2 assume !(0 == main_~i~0); 15565#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 15564#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15561#L12 assume !(10 == main_~i~0); 15556#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 15555#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15545#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15546#L12 assume !(10 == main_~i~0); 15553#L12-2 assume !(0 == main_~i~0); 15557#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15692#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15691#L12 assume !(10 == main_~i~0); 15690#L12-2 assume !(0 == main_~i~0); 15689#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15688#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15687#L12 assume !(10 == main_~i~0); 15686#L12-2 assume !(0 == main_~i~0); 15685#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15684#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15683#L12 assume !(10 == main_~i~0); 15682#L12-2 assume !(0 == main_~i~0); 15681#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15680#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15679#L12 assume !(10 == main_~i~0); 15678#L12-2 assume !(0 == main_~i~0); 15677#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15676#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15675#L12 assume !(10 == main_~i~0); 15674#L12-2 assume !(0 == main_~i~0); 15673#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15672#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15671#L12 assume !(10 == main_~i~0); 15670#L12-2 assume !(0 == main_~i~0); 15669#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15668#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15667#L12 assume !(10 == main_~i~0); 15666#L12-2 assume !(0 == main_~i~0); 15665#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15663#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15661#L12 assume !(10 == main_~i~0); 15659#L12-2 assume !(0 == main_~i~0); 15660#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15664#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15662#L12 assume 10 == main_~i~0;main_~up~0 := 0; 15541#L12-2 [2021-10-28 09:25:45,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:45,517 INFO L85 PathProgramCache]: Analyzing trace with hash 180435263, now seen corresponding path program 14 times [2021-10-28 09:25:45,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:45,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321280752] [2021-10-28 09:25:45,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:45,517 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:45,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:45,527 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:25:45,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:45,539 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:25:45,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:45,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1176703283, now seen corresponding path program 15 times [2021-10-28 09:25:45,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:45,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190796417] [2021-10-28 09:25:45,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:45,540 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:45,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:45,552 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:25:45,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:45,560 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:25:45,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:45,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1395997809, now seen corresponding path program 7 times [2021-10-28 09:25:45,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:45,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340595132] [2021-10-28 09:25:45,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:45,563 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:45,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:45,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 1077 proven. 120 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2021-10-28 09:25:45,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:25:45,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340595132] [2021-10-28 09:25:45,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340595132] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:45,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234095096] [2021-10-28 09:25:45,688 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 09:25:45,688 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:25:45,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:45,695 INFO L229 MonitoredProcess]: Starting monitored process 116 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:25:45,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2021-10-28 09:25:46,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:46,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 09:25:46,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:46,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 1077 proven. 120 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2021-10-28 09:25:46,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234095096] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:46,605 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:25:46,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-10-28 09:25:46,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595700591] [2021-10-28 09:25:47,009 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:25:47,009 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:25:47,009 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:25:47,009 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:25:47,010 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:25:47,010 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:47,010 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:25:47,010 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:25:47,010 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration24_Loop [2021-10-28 09:25:47,010 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:25:47,010 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:25:47,011 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:47,017 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:47,019 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:47,021 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:47,069 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:25:47,070 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:25:47,070 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:47,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:47,071 INFO L229 MonitoredProcess]: Starting monitored process 117 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:47,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (117)] Waiting until timeout for monitored process [2021-10-28 09:25:47,073 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:25:47,073 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:47,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (117)] Ended with exit code 0 [2021-10-28 09:25:47,105 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:47,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:47,106 INFO L229 MonitoredProcess]: Starting monitored process 118 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:47,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (118)] Waiting until timeout for monitored process [2021-10-28 09:25:47,107 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:25:47,107 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:47,116 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:25:47,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (118)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:47,136 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:25:47,136 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:25:47,136 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:25:47,136 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:25:47,136 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:25:47,136 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:47,136 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:25:47,136 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:25:47,136 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration24_Loop [2021-10-28 09:25:47,136 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:25:47,136 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:25:47,137 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:47,139 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:47,146 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:47,148 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:47,202 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:25:47,202 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:25:47,202 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:47,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:47,203 INFO L229 MonitoredProcess]: Starting monitored process 119 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:47,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (119)] Waiting until timeout for monitored process [2021-10-28 09:25:47,204 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 [2021-10-28 09:25:47,211 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:25:47,211 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:25:47,211 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:25:47,211 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:25:47,212 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:25:47,212 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:25:47,215 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:25:47,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (119)] Ended with exit code 0 [2021-10-28 09:25:47,234 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:47,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:47,236 INFO L229 MonitoredProcess]: Starting monitored process 120 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:47,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (120)] Waiting until timeout for monitored process [2021-10-28 09:25:47,239 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 [2021-10-28 09:25:47,246 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:25:47,246 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:25:47,246 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:25:47,246 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:25:47,246 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:25:47,247 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:25:47,247 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:25:47,249 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:25:47,250 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 09:25:47,250 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 09:25:47,251 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:47,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:47,252 INFO L229 MonitoredProcess]: Starting monitored process 121 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:47,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (121)] Waiting until timeout for monitored process [2021-10-28 09:25:47,253 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:25:47,253 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:25:47,253 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:25:47,253 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 9 Supporting invariants [] [2021-10-28 09:25:47,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (120)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:47,276 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:25:47,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:47,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:47,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:25:47,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:47,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:47,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 09:25:47,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:47,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (121)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:47,755 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-10-28 09:25:47,755 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 10 loop predicates [2021-10-28 09:25:47,755 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 152 states and 168 transitions. cyclomatic complexity: 20 Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 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) [2021-10-28 09:25:48,142 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 152 states and 168 transitions. cyclomatic complexity: 20. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 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 1066 states and 1182 transitions. Complement of second has 39 states. [2021-10-28 09:25:48,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 20 states 1 stem states 18 non-accepting loop states 1 accepting loop states [2021-10-28 09:25:48,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 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) [2021-10-28 09:25:48,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 89 transitions. [2021-10-28 09:25:48,143 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 89 transitions. Stem has 43 letters. Loop has 72 letters. [2021-10-28 09:25:48,144 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:25:48,144 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 89 transitions. Stem has 115 letters. Loop has 72 letters. [2021-10-28 09:25:48,145 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:25:48,145 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 89 transitions. Stem has 43 letters. Loop has 144 letters. [2021-10-28 09:25:48,147 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:25:48,147 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1066 states and 1182 transitions. [2021-10-28 09:25:48,154 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 77 [2021-10-28 09:25:48,159 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1066 states to 711 states and 790 transitions. [2021-10-28 09:25:48,159 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 73 [2021-10-28 09:25:48,159 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 76 [2021-10-28 09:25:48,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 711 states and 790 transitions. [2021-10-28 09:25:48,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:25:48,160 INFO L681 BuchiCegarLoop]: Abstraction has 711 states and 790 transitions. [2021-10-28 09:25:48,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states and 790 transitions. [2021-10-28 09:25:48,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 370. [2021-10-28 09:25:48,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 370 states have (on average 1.0783783783783785) internal successors, (399), 369 states have internal predecessors, (399), 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) [2021-10-28 09:25:48,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 399 transitions. [2021-10-28 09:25:48,176 INFO L704 BuchiCegarLoop]: Abstraction has 370 states and 399 transitions. [2021-10-28 09:25:48,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:25:48,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:25:48,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:25:48,177 INFO L87 Difference]: Start difference. First operand 370 states and 399 transitions. Second operand has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 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) [2021-10-28 09:25:48,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:25:48,238 INFO L93 Difference]: Finished difference Result 373 states and 410 transitions. [2021-10-28 09:25:48,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:25:48,239 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 373 states and 410 transitions. [2021-10-28 09:25:48,241 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 79 [2021-10-28 09:25:48,243 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 373 states to 307 states and 344 transitions. [2021-10-28 09:25:48,243 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 57 [2021-10-28 09:25:48,243 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2021-10-28 09:25:48,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 307 states and 344 transitions. [2021-10-28 09:25:48,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:25:48,244 INFO L681 BuchiCegarLoop]: Abstraction has 307 states and 344 transitions. [2021-10-28 09:25:48,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states and 344 transitions. [2021-10-28 09:25:48,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 160. [2021-10-28 09:25:48,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 160 states have (on average 1.10625) internal successors, (177), 159 states have internal predecessors, (177), 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) [2021-10-28 09:25:48,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 177 transitions. [2021-10-28 09:25:48,249 INFO L704 BuchiCegarLoop]: Abstraction has 160 states and 177 transitions. [2021-10-28 09:25:48,249 INFO L587 BuchiCegarLoop]: Abstraction has 160 states and 177 transitions. [2021-10-28 09:25:48,249 INFO L425 BuchiCegarLoop]: ======== Iteration 25============ [2021-10-28 09:25:48,249 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 160 states and 177 transitions. [2021-10-28 09:25:48,250 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 77 [2021-10-28 09:25:48,250 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:25:48,250 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:25:48,251 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 9, 1, 1, 1] [2021-10-28 09:25:48,251 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [19, 18, 18, 10, 9, 1, 1] [2021-10-28 09:25:48,251 INFO L791 eck$LassoCheckResult]: Stem: 18295#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 18296#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18378#L12 assume !(10 == main_~i~0); 18313#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 18297#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18298#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18375#L12 assume !(10 == main_~i~0); 18374#L12-2 assume !(0 == main_~i~0); 18372#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18370#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18368#L12 assume !(10 == main_~i~0); 18366#L12-2 assume !(0 == main_~i~0); 18364#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18362#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18360#L12 assume !(10 == main_~i~0); 18358#L12-2 assume !(0 == main_~i~0); 18356#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18354#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18352#L12 assume !(10 == main_~i~0); 18350#L12-2 assume !(0 == main_~i~0); 18348#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18346#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18344#L12 assume !(10 == main_~i~0); 18342#L12-2 assume !(0 == main_~i~0); 18340#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18338#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18336#L12 assume !(10 == main_~i~0); 18334#L12-2 assume !(0 == main_~i~0); 18332#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18330#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18328#L12 assume !(10 == main_~i~0); 18326#L12-2 assume !(0 == main_~i~0); 18324#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18322#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18320#L12 assume !(10 == main_~i~0); 18318#L12-2 assume !(0 == main_~i~0); 18307#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18315#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18314#L12 assume !(10 == main_~i~0); 18305#L12-2 assume !(0 == main_~i~0); 18306#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18382#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18379#L12 assume 10 == main_~i~0;main_~up~0 := 0; 18287#L12-2 [2021-10-28 09:25:48,251 INFO L793 eck$LassoCheckResult]: Loop: 18287#L12-2 assume !(0 == main_~i~0); 18288#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 18373#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18371#L12 assume !(10 == main_~i~0); 18369#L12-2 assume !(0 == main_~i~0); 18367#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 18365#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18363#L12 assume !(10 == main_~i~0); 18361#L12-2 assume !(0 == main_~i~0); 18359#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 18357#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18355#L12 assume !(10 == main_~i~0); 18353#L12-2 assume !(0 == main_~i~0); 18351#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 18349#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18347#L12 assume !(10 == main_~i~0); 18345#L12-2 assume !(0 == main_~i~0); 18343#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 18341#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18339#L12 assume !(10 == main_~i~0); 18337#L12-2 assume !(0 == main_~i~0); 18335#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 18333#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18331#L12 assume !(10 == main_~i~0); 18329#L12-2 assume !(0 == main_~i~0); 18327#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 18325#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18323#L12 assume !(10 == main_~i~0); 18321#L12-2 assume !(0 == main_~i~0); 18319#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 18317#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18316#L12 assume !(10 == main_~i~0); 18310#L12-2 assume !(0 == main_~i~0); 18312#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 18311#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18308#L12 assume !(10 == main_~i~0); 18303#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 18304#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18291#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18292#L12 assume !(10 == main_~i~0); 18299#L12-2 assume !(0 == main_~i~0); 18301#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18302#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18446#L12 assume !(10 == main_~i~0); 18445#L12-2 assume !(0 == main_~i~0); 18444#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18443#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18442#L12 assume !(10 == main_~i~0); 18441#L12-2 assume !(0 == main_~i~0); 18440#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18439#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18438#L12 assume !(10 == main_~i~0); 18437#L12-2 assume !(0 == main_~i~0); 18436#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18435#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18434#L12 assume !(10 == main_~i~0); 18433#L12-2 assume !(0 == main_~i~0); 18432#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18431#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18430#L12 assume !(10 == main_~i~0); 18429#L12-2 assume !(0 == main_~i~0); 18428#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18427#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18426#L12 assume !(10 == main_~i~0); 18425#L12-2 assume !(0 == main_~i~0); 18424#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18423#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18422#L12 assume !(10 == main_~i~0); 18421#L12-2 assume !(0 == main_~i~0); 18420#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18418#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18416#L12 assume !(10 == main_~i~0); 18414#L12-2 assume !(0 == main_~i~0); 18415#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18419#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18417#L12 assume 10 == main_~i~0;main_~up~0 := 0; 18287#L12-2 [2021-10-28 09:25:48,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:48,252 INFO L85 PathProgramCache]: Analyzing trace with hash 180435263, now seen corresponding path program 15 times [2021-10-28 09:25:48,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:48,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542898593] [2021-10-28 09:25:48,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:48,253 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:48,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:48,282 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:25:48,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:48,288 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:25:48,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:48,288 INFO L85 PathProgramCache]: Analyzing trace with hash 289875998, now seen corresponding path program 16 times [2021-10-28 09:25:48,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:48,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228774963] [2021-10-28 09:25:48,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:48,289 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:48,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:48,300 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:25:48,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:48,308 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:25:48,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:48,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1498053540, now seen corresponding path program 8 times [2021-10-28 09:25:48,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:48,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210626475] [2021-10-28 09:25:48,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:48,310 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:48,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:48,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 1158 proven. 153 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2021-10-28 09:25:48,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:25:48,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210626475] [2021-10-28 09:25:48,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210626475] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:48,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753330933] [2021-10-28 09:25:48,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:25:48,418 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:25:48,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:48,420 INFO L229 MonitoredProcess]: Starting monitored process 122 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:25:48,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2021-10-28 09:25:49,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:25:49,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:25:49,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 09:25:49,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:49,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 1158 proven. 153 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2021-10-28 09:25:49,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753330933] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:49,301 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:25:49,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2021-10-28 09:25:49,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616735803] [2021-10-28 09:25:49,722 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:25:49,722 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:25:49,722 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:25:49,722 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:25:49,722 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:25:49,722 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:49,722 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:25:49,722 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:25:49,722 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration25_Loop [2021-10-28 09:25:49,723 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:25:49,723 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:25:49,723 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:49,725 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:49,729 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:49,732 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:49,772 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:25:49,772 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:25:49,773 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:49,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:49,774 INFO L229 MonitoredProcess]: Starting monitored process 123 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:49,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (123)] Waiting until timeout for monitored process [2021-10-28 09:25:49,775 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:25:49,775 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:49,787 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:25:49,788 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_27=1} Honda state: {v_rep~unnamed0~0~true_27=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:25:49,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (123)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:49,806 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:49,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:49,807 INFO L229 MonitoredProcess]: Starting monitored process 124 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:49,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (124)] Waiting until timeout for monitored process [2021-10-28 09:25:49,808 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:25:49,808 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:49,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (124)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:49,835 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:49,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:49,836 INFO L229 MonitoredProcess]: Starting monitored process 125 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:49,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (125)] Waiting until timeout for monitored process [2021-10-28 09:25:49,838 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:25:49,838 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:25:49,847 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:25:49,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (125)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:49,866 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:25:49,866 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:25:49,866 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:25:49,866 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:25:49,866 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:25:49,866 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:49,866 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:25:49,866 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:25:49,866 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration25_Loop [2021-10-28 09:25:49,866 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:25:49,866 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:25:49,867 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:49,869 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:49,872 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:49,876 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:25:49,914 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:25:49,914 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:25:49,915 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:49,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:49,915 INFO L229 MonitoredProcess]: Starting monitored process 126 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:49,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (126)] Waiting until timeout for monitored process [2021-10-28 09:25:49,917 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 [2021-10-28 09:25:49,924 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:25:49,924 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:25:49,924 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:25:49,924 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:25:49,925 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:25:49,926 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:25:49,928 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:25:49,947 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (126)] Ended with exit code 0 [2021-10-28 09:25:49,948 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:49,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:49,949 INFO L229 MonitoredProcess]: Starting monitored process 127 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:49,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (127)] Waiting until timeout for monitored process [2021-10-28 09:25:49,951 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 [2021-10-28 09:25:49,957 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:25:49,958 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:25:49,958 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:25:49,958 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:25:49,958 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:25:49,958 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:25:49,959 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:25:49,960 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:25:49,962 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 09:25:49,962 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 09:25:49,962 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:25:49,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:49,964 INFO L229 MonitoredProcess]: Starting monitored process 128 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:25:49,965 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:25:49,965 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:25:49,965 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:25:49,965 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 19 Supporting invariants [] [2021-10-28 09:25:49,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (128)] Waiting until timeout for monitored process [2021-10-28 09:25:49,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (127)] Ended with exit code 0 [2021-10-28 09:25:49,986 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:25:49,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:50,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:50,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:25:50,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:50,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:50,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 09:25:50,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:50,443 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 513 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-10-28 09:25:50,444 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 11 loop predicates [2021-10-28 09:25:50,444 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 160 states and 177 transitions. cyclomatic complexity: 21 Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:25:50,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (128)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:51,051 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 160 states and 177 transitions. cyclomatic complexity: 21. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 1253 states and 1393 transitions. Complement of second has 43 states. [2021-10-28 09:25:51,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 22 states 1 stem states 20 non-accepting loop states 1 accepting loop states [2021-10-28 09:25:51,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:25:51,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 98 transitions. [2021-10-28 09:25:51,052 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 22 states and 98 transitions. Stem has 43 letters. Loop has 76 letters. [2021-10-28 09:25:51,053 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:25:51,053 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 22 states and 98 transitions. Stem has 119 letters. Loop has 76 letters. [2021-10-28 09:25:51,054 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:25:51,054 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 22 states and 98 transitions. Stem has 43 letters. Loop has 152 letters. [2021-10-28 09:25:51,055 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:25:51,055 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1253 states and 1393 transitions. [2021-10-28 09:25:51,063 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 81 [2021-10-28 09:25:51,069 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1253 states to 817 states and 911 transitions. [2021-10-28 09:25:51,069 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74 [2021-10-28 09:25:51,071 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 78 [2021-10-28 09:25:51,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 817 states and 911 transitions. [2021-10-28 09:25:51,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:25:51,072 INFO L681 BuchiCegarLoop]: Abstraction has 817 states and 911 transitions. [2021-10-28 09:25:51,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states and 911 transitions. [2021-10-28 09:25:51,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 394. [2021-10-28 09:25:51,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 394 states have (on average 1.0812182741116751) internal successors, (426), 393 states have internal predecessors, (426), 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) [2021-10-28 09:25:51,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 426 transitions. [2021-10-28 09:25:51,082 INFO L704 BuchiCegarLoop]: Abstraction has 394 states and 426 transitions. [2021-10-28 09:25:51,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:25:51,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 09:25:51,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:25:51,083 INFO L87 Difference]: Start difference. First operand 394 states and 426 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:25:51,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:25:51,144 INFO L93 Difference]: Finished difference Result 401 states and 441 transitions. [2021-10-28 09:25:51,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:25:51,145 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 401 states and 441 transitions. [2021-10-28 09:25:51,148 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 83 [2021-10-28 09:25:51,150 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 401 states to 327 states and 367 transitions. [2021-10-28 09:25:51,150 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 57 [2021-10-28 09:25:51,150 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2021-10-28 09:25:51,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 327 states and 367 transitions. [2021-10-28 09:25:51,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:25:51,155 INFO L681 BuchiCegarLoop]: Abstraction has 327 states and 367 transitions. [2021-10-28 09:25:51,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states and 367 transitions. [2021-10-28 09:25:51,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 168. [2021-10-28 09:25:51,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 168 states have (on average 1.1071428571428572) internal successors, (186), 167 states have internal predecessors, (186), 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) [2021-10-28 09:25:51,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 186 transitions. [2021-10-28 09:25:51,160 INFO L704 BuchiCegarLoop]: Abstraction has 168 states and 186 transitions. [2021-10-28 09:25:51,160 INFO L587 BuchiCegarLoop]: Abstraction has 168 states and 186 transitions. [2021-10-28 09:25:51,161 INFO L425 BuchiCegarLoop]: ======== Iteration 26============ [2021-10-28 09:25:51,161 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 168 states and 186 transitions. [2021-10-28 09:25:51,162 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2021-10-28 09:25:51,162 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:25:51,162 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:25:51,163 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 9, 1, 1, 1] [2021-10-28 09:25:51,163 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [20, 19, 19, 10, 10, 1, 1] [2021-10-28 09:25:51,163 INFO L791 eck$LassoCheckResult]: Stem: 21321#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 21322#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21406#L12 assume !(10 == main_~i~0); 21338#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 21323#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21324#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21401#L12 assume !(10 == main_~i~0); 21399#L12-2 assume !(0 == main_~i~0); 21397#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21395#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21393#L12 assume !(10 == main_~i~0); 21391#L12-2 assume !(0 == main_~i~0); 21389#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21387#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21385#L12 assume !(10 == main_~i~0); 21383#L12-2 assume !(0 == main_~i~0); 21381#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21379#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21377#L12 assume !(10 == main_~i~0); 21375#L12-2 assume !(0 == main_~i~0); 21373#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21371#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21369#L12 assume !(10 == main_~i~0); 21367#L12-2 assume !(0 == main_~i~0); 21365#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21363#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21361#L12 assume !(10 == main_~i~0); 21359#L12-2 assume !(0 == main_~i~0); 21357#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21355#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21353#L12 assume !(10 == main_~i~0); 21351#L12-2 assume !(0 == main_~i~0); 21349#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21347#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21345#L12 assume !(10 == main_~i~0); 21343#L12-2 assume !(0 == main_~i~0); 21332#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21340#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21339#L12 assume !(10 == main_~i~0); 21330#L12-2 assume !(0 == main_~i~0); 21331#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21411#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21405#L12 assume 10 == main_~i~0;main_~up~0 := 0; 21313#L12-2 [2021-10-28 09:25:51,163 INFO L793 eck$LassoCheckResult]: Loop: 21313#L12-2 assume !(0 == main_~i~0); 21314#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 21404#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21403#L12 assume !(10 == main_~i~0); 21402#L12-2 assume !(0 == main_~i~0); 21400#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 21398#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21396#L12 assume !(10 == main_~i~0); 21394#L12-2 assume !(0 == main_~i~0); 21392#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 21390#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21388#L12 assume !(10 == main_~i~0); 21386#L12-2 assume !(0 == main_~i~0); 21384#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 21382#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21380#L12 assume !(10 == main_~i~0); 21378#L12-2 assume !(0 == main_~i~0); 21376#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 21374#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21372#L12 assume !(10 == main_~i~0); 21370#L12-2 assume !(0 == main_~i~0); 21368#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 21366#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21364#L12 assume !(10 == main_~i~0); 21362#L12-2 assume !(0 == main_~i~0); 21360#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 21358#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21356#L12 assume !(10 == main_~i~0); 21354#L12-2 assume !(0 == main_~i~0); 21352#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 21350#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21348#L12 assume !(10 == main_~i~0); 21346#L12-2 assume !(0 == main_~i~0); 21344#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 21342#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21341#L12 assume !(10 == main_~i~0); 21335#L12-2 assume !(0 == main_~i~0); 21337#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 21336#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21333#L12 assume !(10 == main_~i~0); 21328#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 21327#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21317#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21318#L12 assume !(10 == main_~i~0); 21325#L12-2 assume !(0 == main_~i~0); 21329#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21480#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21479#L12 assume !(10 == main_~i~0); 21478#L12-2 assume !(0 == main_~i~0); 21477#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21476#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21475#L12 assume !(10 == main_~i~0); 21474#L12-2 assume !(0 == main_~i~0); 21473#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21472#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21471#L12 assume !(10 == main_~i~0); 21470#L12-2 assume !(0 == main_~i~0); 21469#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21468#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21467#L12 assume !(10 == main_~i~0); 21466#L12-2 assume !(0 == main_~i~0); 21465#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21464#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21463#L12 assume !(10 == main_~i~0); 21462#L12-2 assume !(0 == main_~i~0); 21461#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21460#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21459#L12 assume !(10 == main_~i~0); 21458#L12-2 assume !(0 == main_~i~0); 21457#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21456#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21455#L12 assume !(10 == main_~i~0); 21454#L12-2 assume !(0 == main_~i~0); 21453#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21452#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21450#L12 assume !(10 == main_~i~0); 21447#L12-2 assume !(0 == main_~i~0); 21448#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21451#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21449#L12 assume 10 == main_~i~0;main_~up~0 := 0; 21313#L12-2 [2021-10-28 09:25:51,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:51,164 INFO L85 PathProgramCache]: Analyzing trace with hash 180435263, now seen corresponding path program 16 times [2021-10-28 09:25:51,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:51,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117644161] [2021-10-28 09:25:51,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:51,164 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:51,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:51,174 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:25:51,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:51,185 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:25:51,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:51,186 INFO L85 PathProgramCache]: Analyzing trace with hash -312487543, now seen corresponding path program 17 times [2021-10-28 09:25:51,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:51,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502605656] [2021-10-28 09:25:51,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:51,187 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:51,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:51,203 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:25:51,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:51,234 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:25:51,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:51,235 INFO L85 PathProgramCache]: Analyzing trace with hash 799661767, now seen corresponding path program 9 times [2021-10-28 09:25:51,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:51,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277508109] [2021-10-28 09:25:51,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:51,236 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:51,251 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:25:51,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:25:51,268 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:25:51,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 09:25:51 BoogieIcfgContainer [2021-10-28 09:25:51,935 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 09:25:51,936 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:25:51,936 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:25:51,936 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:25:51,936 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:25:21" (3/4) ... [2021-10-28 09:25:51,938 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-28 09:25:51,997 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:25:51,997 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:25:51,999 INFO L168 Benchmark]: Toolchain (without parser) took 30905.31 ms. Allocated memory was 92.3 MB in the beginning and 419.4 MB in the end (delta: 327.2 MB). Free memory was 57.8 MB in the beginning and 162.8 MB in the end (delta: -105.1 MB). Peak memory consumption was 220.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:25:52,000 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 92.3 MB. Free memory was 65.7 MB in the beginning and 65.7 MB in the end (delta: 28.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:25:52,000 INFO L168 Benchmark]: CACSL2BoogieTranslator took 221.37 ms. Allocated memory is still 92.3 MB. Free memory was 57.6 MB in the beginning and 69.1 MB in the end (delta: -11.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:25:52,000 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.20 ms. Allocated memory is still 92.3 MB. Free memory was 69.1 MB in the beginning and 67.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:25:52,001 INFO L168 Benchmark]: Boogie Preprocessor took 16.79 ms. Allocated memory is still 92.3 MB. Free memory was 67.9 MB in the beginning and 67.0 MB in the end (delta: 938.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:25:52,001 INFO L168 Benchmark]: RCFGBuilder took 307.58 ms. Allocated memory is still 92.3 MB. Free memory was 67.0 MB in the beginning and 59.2 MB in the end (delta: 7.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:25:52,002 INFO L168 Benchmark]: BuchiAutomizer took 30244.51 ms. Allocated memory was 92.3 MB in the beginning and 419.4 MB in the end (delta: 327.2 MB). Free memory was 59.0 MB in the beginning and 167.0 MB in the end (delta: -108.1 MB). Peak memory consumption was 286.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:25:52,002 INFO L168 Benchmark]: Witness Printer took 61.97 ms. Allocated memory is still 419.4 MB. Free memory was 167.0 MB in the beginning and 162.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:25:52,004 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 92.3 MB. Free memory was 65.7 MB in the beginning and 65.7 MB in the end (delta: 28.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 221.37 ms. Allocated memory is still 92.3 MB. Free memory was 57.6 MB in the beginning and 69.1 MB in the end (delta: -11.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.20 ms. Allocated memory is still 92.3 MB. Free memory was 69.1 MB in the beginning and 67.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 16.79 ms. Allocated memory is still 92.3 MB. Free memory was 67.9 MB in the beginning and 67.0 MB in the end (delta: 938.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 307.58 ms. Allocated memory is still 92.3 MB. Free memory was 67.0 MB in the beginning and 59.2 MB in the end (delta: 7.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 30244.51 ms. Allocated memory was 92.3 MB in the beginning and 419.4 MB in the end (delta: 327.2 MB). Free memory was 59.0 MB in the beginning and 167.0 MB in the end (delta: -108.1 MB). Peak memory consumption was 286.2 MB. Max. memory is 16.1 GB. * Witness Printer took 61.97 ms. Allocated memory is still 419.4 MB. Free memory was 167.0 MB in the beginning and 162.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 36 terminating modules (22 trivial, 13 deterministic, 1 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function -2 * i + 17 and consists of 5 locations. One deterministic module has affine ranking function -1 * i and consists of 4 locations. One deterministic module has affine ranking function -2 * i + 17 and consists of 5 locations. One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function -2 * i + 13 and consists of 10 locations. One deterministic module has affine ranking function 7 + -1 * i and consists of 12 locations. One deterministic module has affine ranking function -2 * i + 15 and consists of 14 locations. One deterministic module has affine ranking function -1 * i + 8 and consists of 16 locations. One deterministic module has affine ranking function -2 * i + 17 and consists of 18 locations. One deterministic module has affine ranking function 9 + -1 * i and consists of 20 locations. One deterministic module has affine ranking function 19 + -2 * i and consists of 22 locations. One nondeterministic module has affine ranking function i and consists of 4 locations. 22 modules have a trivial ranking function, the largest among these consists of 12 locations. The remainder module has 168 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 30.1s and 26 iterations. TraceHistogramMax:20. Analysis of lassos took 22.1s. Construction of modules took 1.4s. Büchi inclusion checks took 6.0s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 35. Automata minimization 0.2s AutomataMinimizationTime, 36 MinimizatonAttempts, 2596 StatesRemovedByMinimization, 35 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had 168 states and ocurred in iteration 25. Nontrivial modules had stage [13, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1197/3416 HoareTripleCheckerStatistics: 274 SDtfs, 748 SDslu, 9 SDs, 0 SdLazy, 1926 SolverSat, 251 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time LassoAnalysisResults: nont1 unkn0 SFLI3 SFLT3 conc0 concLT9 SILN0 SILU0 SILI8 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax162 hnf97 lsp43 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq178 hnf94 smp83 dnf139 smp96 tf108 neg93 sie114 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 64ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 23 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 14 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 15]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {up=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@56644294=0, \result=0, i=10} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 11]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] int up; [L8] i = __VERIFIER_nondet_int() [L9] up = 0 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND TRUE i == 0 [L16] up = 1 [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND TRUE i == 10 [L13] up = 0 Loop: [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND TRUE i == 0 [L16] up = 1 [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND TRUE i == 10 [L13] up = 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-28 09:25:52,058 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Ended with exit code 0 [2021-10-28 09:25:52,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:52,465 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Ended with exit code 0 [2021-10-28 09:25:52,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2021-10-28 09:25:52,865 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2021-10-28 09:25:53,064 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2021-10-28 09:25:53,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2021-10-28 09:25:53,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:53,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:53,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:54,065 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2021-10-28 09:25:54,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2021-10-28 09:25:54,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:54,666 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2021-10-28 09:25:54,866 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2021-10-28 09:25:55,066 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2021-10-28 09:25:55,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:55,466 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2021-10-28 09:25:55,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2021-10-28 09:25:55,867 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2021-10-28 09:25:56,067 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2021-10-28 09:25:56,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:56,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2021-10-28 09:25:56,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:56,868 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2021-10-28 09:25:57,070 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a71b3a-bd02-4a66-9609-a00710cdcaa4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...