./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-invgen/nest-if3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-invgen/nest-if3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ff6ed2162f27809b742c891ab6e2d783f8472921e0d39d2ecd3fd1d3f6661283 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:11:13,036 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:11:13,038 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:11:13,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:11:13,073 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:11:13,077 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:11:13,081 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:11:13,085 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:11:13,089 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:11:13,090 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:11:13,091 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:11:13,092 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:11:13,092 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:11:13,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:11:13,094 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:11:13,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:11:13,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:11:13,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:11:13,102 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:11:13,111 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:11:13,116 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:11:13,122 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:11:13,124 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:11:13,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:11:13,128 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:11:13,129 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:11:13,129 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:11:13,130 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:11:13,130 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:11:13,131 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:11:13,132 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:11:13,133 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:11:13,133 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:11:13,147 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:11:13,148 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:11:13,148 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:11:13,149 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:11:13,149 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:11:13,149 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:11:13,150 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:11:13,151 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:11:13,152 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-11-20 11:11:13,188 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:11:13,188 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:11:13,188 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:11:13,188 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:11:13,189 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:11:13,190 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:11:13,190 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:11:13,190 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-20 11:11:13,190 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-20 11:11:13,190 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-20 11:11:13,191 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-20 11:11:13,191 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-20 11:11:13,191 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-20 11:11:13,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:11:13,191 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:11:13,192 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:11:13,192 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:11:13,192 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:11:13,192 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:11:13,192 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-20 11:11:13,192 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-20 11:11:13,193 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-20 11:11:13,193 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:11:13,193 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:11:13,193 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-20 11:11:13,193 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:11:13,193 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-20 11:11:13,194 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:11:13,194 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:11:13,194 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:11:13,194 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:11:13,200 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-20 11:11:13,201 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_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff6ed2162f27809b742c891ab6e2d783f8472921e0d39d2ecd3fd1d3f6661283 [2022-11-20 11:11:13,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:11:13,498 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:11:13,502 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:11:13,504 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:11:13,504 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:11:13,505 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/loop-invgen/nest-if3.i [2022-11-20 11:11:16,514 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:11:16,749 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:11:16,749 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/sv-benchmarks/c/loop-invgen/nest-if3.i [2022-11-20 11:11:16,756 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/data/01ac3773c/f3d50a4dbc934a7294ffadad3030c94f/FLAG6adc42fa7 [2022-11-20 11:11:16,773 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/data/01ac3773c/f3d50a4dbc934a7294ffadad3030c94f [2022-11-20 11:11:16,776 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:11:16,778 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:11:16,780 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:11:16,780 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:11:16,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:11:16,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:11:16" (1/1) ... [2022-11-20 11:11:16,787 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fba03a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:16, skipping insertion in model container [2022-11-20 11:11:16,787 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:11:16" (1/1) ... [2022-11-20 11:11:16,796 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:11:16,811 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:11:17,001 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/sv-benchmarks/c/loop-invgen/nest-if3.i[893,906] [2022-11-20 11:11:17,010 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:11:17,021 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:11:17,034 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/sv-benchmarks/c/loop-invgen/nest-if3.i[893,906] [2022-11-20 11:11:17,037 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:11:17,051 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:11:17,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:17 WrapperNode [2022-11-20 11:11:17,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:11:17,053 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:11:17,053 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:11:17,053 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:11:17,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:17" (1/1) ... [2022-11-20 11:11:17,068 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:17" (1/1) ... [2022-11-20 11:11:17,082 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2022-11-20 11:11:17,083 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:11:17,084 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:11:17,084 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:11:17,084 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:11:17,091 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:17" (1/1) ... [2022-11-20 11:11:17,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:17" (1/1) ... [2022-11-20 11:11:17,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:17" (1/1) ... [2022-11-20 11:11:17,092 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:17" (1/1) ... [2022-11-20 11:11:17,095 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:17" (1/1) ... [2022-11-20 11:11:17,099 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:17" (1/1) ... [2022-11-20 11:11:17,100 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:17" (1/1) ... [2022-11-20 11:11:17,101 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:17" (1/1) ... [2022-11-20 11:11:17,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:11:17,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:11:17,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:11:17,104 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:11:17,105 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:17" (1/1) ... [2022-11-20 11:11:17,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:11:17,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:17,141 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:11:17,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-20 11:11:17,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:11:17,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:11:17,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:11:17,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:11:17,269 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:11:17,272 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:11:17,452 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:11:17,458 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:11:17,458 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 11:11:17,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:11:17 BoogieIcfgContainer [2022-11-20 11:11:17,460 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:11:17,462 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-20 11:11:17,462 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-20 11:11:17,469 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-20 11:11:17,470 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 11:11:17,471 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 11:11:16" (1/3) ... [2022-11-20 11:11:17,473 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5f61ddc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 11:11:17, skipping insertion in model container [2022-11-20 11:11:17,477 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 11:11:17,478 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:17" (2/3) ... [2022-11-20 11:11:17,478 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5f61ddc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 11:11:17, skipping insertion in model container [2022-11-20 11:11:17,478 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 11:11:17,479 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:11:17" (3/3) ... [2022-11-20 11:11:17,480 INFO L332 chiAutomizerObserver]: Analyzing ICFG nest-if3.i [2022-11-20 11:11:17,616 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-20 11:11:17,617 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-20 11:11:17,617 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-20 11:11:17,617 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-20 11:11:17,617 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-20 11:11:17,617 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-20 11:11:17,617 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-20 11:11:17,618 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-20 11:11:17,632 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 16 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:17,688 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-11-20 11:11:17,689 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 11:11:17,689 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 11:11:17,695 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-11-20 11:11:17,695 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-20 11:11:17,695 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-20 11:11:17,696 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 16 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:17,697 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-11-20 11:11:17,697 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 11:11:17,698 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 11:11:17,698 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-11-20 11:11:17,698 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-20 11:11:17,706 INFO L748 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~post4#1, main_#t~nondet5#1, main_#t~post3#1, main_~i~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1;havoc main_~i~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~l~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 12#L28true assume !!(main_~l~0#1 > 0); 5#L29true assume !!(main_~l~0#1 < 1000000); 4#L30true assume !!(main_~n~0#1 < 1000000);main_~k~0#1 := 1; 7#L31-3true [2022-11-20 11:11:17,707 INFO L750 eck$LassoCheckResult]: Loop: 7#L31-3true assume !!(main_~k~0#1 < main_~n~0#1);main_~i~0#1 := main_~l~0#1; 11#L32-3true assume !true; 16#L32-4true assume 0 != main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~l~0#1 := 1 + main_~l~0#1; 13#L31-2true main_#t~post3#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 7#L31-3true [2022-11-20 11:11:17,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:17,725 INFO L85 PathProgramCache]: Analyzing trace with hash 28695849, now seen corresponding path program 1 times [2022-11-20 11:11:17,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:17,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101797557] [2022-11-20 11:11:17,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:17,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:17,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:11:17,873 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:11:17,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:11:17,925 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:11:17,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:17,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1715099, now seen corresponding path program 1 times [2022-11-20 11:11:17,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:17,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986459872] [2022-11-20 11:11:17,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:17,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:17,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:17,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:17,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:17,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986459872] [2022-11-20 11:11:17,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986459872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:17,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:17,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:11:17,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86484422] [2022-11-20 11:11:17,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:17,984 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-20 11:11:17,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:18,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:11:18,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:11:18,021 INFO L87 Difference]: Start difference. First operand has 16 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 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 2 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2022-11-20 11:11:18,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:18,028 INFO L93 Difference]: Finished difference Result 16 states and 21 transitions. [2022-11-20 11:11:18,029 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 21 transitions. [2022-11-20 11:11:18,030 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2022-11-20 11:11:18,034 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 12 states and 14 transitions. [2022-11-20 11:11:18,035 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2022-11-20 11:11:18,035 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2022-11-20 11:11:18,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 14 transitions. [2022-11-20 11:11:18,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:11:18,036 INFO L218 hiAutomatonCegarLoop]: Abstraction has 12 states and 14 transitions. [2022-11-20 11:11:18,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 14 transitions. [2022-11-20 11:11:18,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-11-20 11:11:18,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 11 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) [2022-11-20 11:11:18,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2022-11-20 11:11:18,063 INFO L240 hiAutomatonCegarLoop]: Abstraction has 12 states and 14 transitions. [2022-11-20 11:11:18,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:11:18,075 INFO L428 stractBuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2022-11-20 11:11:18,075 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-20 11:11:18,075 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 14 transitions. [2022-11-20 11:11:18,077 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2022-11-20 11:11:18,078 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 11:11:18,078 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 11:11:18,079 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-11-20 11:11:18,079 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-20 11:11:18,079 INFO L748 eck$LassoCheckResult]: Stem: 44#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 45#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~post4#1, main_#t~nondet5#1, main_#t~post3#1, main_~i~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1;havoc main_~i~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~l~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 49#L28 assume !!(main_~l~0#1 > 0); 50#L29 assume !!(main_~l~0#1 < 1000000); 46#L30 assume !!(main_~n~0#1 < 1000000);main_~k~0#1 := 1; 47#L31-3 [2022-11-20 11:11:18,080 INFO L750 eck$LassoCheckResult]: Loop: 47#L31-3 assume !!(main_~k~0#1 < main_~n~0#1);main_~i~0#1 := main_~l~0#1; 41#L32-3 assume !(main_~i~0#1 < main_~n~0#1); 48#L32-4 assume 0 != main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~l~0#1 := 1 + main_~l~0#1; 51#L31-2 main_#t~post3#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 47#L31-3 [2022-11-20 11:11:18,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:18,082 INFO L85 PathProgramCache]: Analyzing trace with hash 28695849, now seen corresponding path program 2 times [2022-11-20 11:11:18,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:18,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153555071] [2022-11-20 11:11:18,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:18,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:18,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:11:18,096 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:11:18,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:11:18,104 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:11:18,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:18,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1699723, now seen corresponding path program 1 times [2022-11-20 11:11:18,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:18,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119854391] [2022-11-20 11:11:18,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:18,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:18,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:11:18,114 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:11:18,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:11:18,121 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:11:18,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:18,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1271724211, now seen corresponding path program 1 times [2022-11-20 11:11:18,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:18,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192889083] [2022-11-20 11:11:18,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:18,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:18,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:11:18,139 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:11:18,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:11:18,164 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:11:18,276 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 11:11:18,276 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 11:11:18,277 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 11:11:18,277 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 11:11:18,277 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 11:11:18,277 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:11:18,277 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 11:11:18,278 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 11:11:18,278 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration2_Loop [2022-11-20 11:11:18,278 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 11:11:18,278 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 11:11:18,305 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:11:18,325 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:11:18,353 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:11:18,454 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 11:11:18,455 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 11:11:18,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:11:18,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:18,462 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:11:18,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-20 11:11:18,469 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 11:11:18,470 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:11:18,504 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 11:11:18,504 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post3#1=0} Honda state: {ULTIMATE.start_main_#t~post3#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 11:11:18,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:18,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:11:18,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:18,516 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:11:18,528 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 11:11:18,529 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:11:18,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-20 11:11:18,551 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 11:11:18,551 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet5#1=4} Honda state: {ULTIMATE.start_main_#t~nondet5#1=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 11:11:18,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:18,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:11:18,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:18,561 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:11:18,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-20 11:11:18,570 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 11:11:18,570 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:11:18,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:18,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:11:18,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:18,607 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:11:18,620 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 11:11:18,620 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:11:18,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-20 11:11:18,956 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 11:11:18,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:18,960 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 11:11:18,960 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 11:11:18,961 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 11:11:18,961 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 11:11:18,961 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 11:11:18,961 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:11:18,961 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 11:11:18,961 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 11:11:18,961 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration2_Loop [2022-11-20 11:11:18,961 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 11:11:18,961 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 11:11:18,965 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:11:18,972 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:11:18,978 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:11:19,063 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 11:11:19,068 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 11:11:19,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:11:19,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:19,070 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:11:19,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-20 11:11:19,084 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 11:11:19,095 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 11:11:19,095 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 11:11:19,095 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 11:11:19,096 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 11:11:19,096 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 11:11:19,097 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 11:11:19,097 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 11:11:19,099 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 11:11:19,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2022-11-20 11:11:19,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:11:19,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:19,105 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:11:19,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-20 11:11:19,108 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 11:11:19,118 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 11:11:19,119 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 11:11:19,119 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 11:11:19,119 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2022-11-20 11:11:19,119 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 11:11:19,120 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-11-20 11:11:19,120 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 11:11:19,147 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 11:11:19,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:19,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:11:19,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:19,159 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:11:19,173 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 11:11:19,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-20 11:11:19,184 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 11:11:19,184 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 11:11:19,184 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 11:11:19,184 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 11:11:19,184 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 11:11:19,187 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 11:11:19,187 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 11:11:19,207 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 11:11:19,214 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-20 11:11:19,214 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-20 11:11:19,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:11:19,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:19,260 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:11:19,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-20 11:11:19,263 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 11:11:19,264 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 11:11:19,264 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 11:11:19,264 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0#1, ULTIMATE.start_main_~n~0#1) = -1*ULTIMATE.start_main_~k~0#1 + 1*ULTIMATE.start_main_~n~0#1 Supporting invariants [] [2022-11-20 11:11:19,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:19,273 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 11:11:19,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:19,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:19,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:11:19,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:19,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:19,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:11:19,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:19,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:19,421 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-20 11:11:19,422 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:19,458 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 20 states and 26 transitions. Complement of second has 4 states. [2022-11-20 11:11:19,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-11-20 11:11:19,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:19,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 14 transitions. [2022-11-20 11:11:19,462 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 5 letters. Loop has 4 letters. [2022-11-20 11:11:19,463 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:11:19,463 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 9 letters. Loop has 4 letters. [2022-11-20 11:11:19,463 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:11:19,463 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 5 letters. Loop has 8 letters. [2022-11-20 11:11:19,464 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:11:19,464 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 26 transitions. [2022-11-20 11:11:19,465 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-20 11:11:19,466 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 18 states and 22 transitions. [2022-11-20 11:11:19,466 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2022-11-20 11:11:19,466 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2022-11-20 11:11:19,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 22 transitions. [2022-11-20 11:11:19,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 11:11:19,467 INFO L218 hiAutomatonCegarLoop]: Abstraction has 18 states and 22 transitions. [2022-11-20 11:11:19,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 22 transitions. [2022-11-20 11:11:19,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2022-11-20 11:11:19,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:19,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2022-11-20 11:11:19,469 INFO L240 hiAutomatonCegarLoop]: Abstraction has 17 states and 21 transitions. [2022-11-20 11:11:19,469 INFO L428 stractBuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2022-11-20 11:11:19,469 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-20 11:11:19,469 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 21 transitions. [2022-11-20 11:11:19,470 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-20 11:11:19,470 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 11:11:19,470 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 11:11:19,471 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2022-11-20 11:11:19,471 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-20 11:11:19,471 INFO L748 eck$LassoCheckResult]: Stem: 128#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 129#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~post4#1, main_#t~nondet5#1, main_#t~post3#1, main_~i~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1;havoc main_~i~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~l~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 131#L28 assume !!(main_~l~0#1 > 0); 132#L29 assume !!(main_~l~0#1 < 1000000); 126#L30 assume !!(main_~n~0#1 < 1000000);main_~k~0#1 := 1; 127#L31-3 assume !!(main_~k~0#1 < main_~n~0#1);main_~i~0#1 := main_~l~0#1; 119#L32-3 [2022-11-20 11:11:19,471 INFO L750 eck$LassoCheckResult]: Loop: 119#L32-3 assume !!(main_~i~0#1 < main_~n~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if 1 <= main_~i~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 122#L18 assume !(0 == __VERIFIER_assert_~cond#1); 123#L18-2 assume { :end_inline___VERIFIER_assert } true; 118#L32-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 119#L32-3 [2022-11-20 11:11:19,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:19,472 INFO L85 PathProgramCache]: Analyzing trace with hash 889571344, now seen corresponding path program 1 times [2022-11-20 11:11:19,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:19,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273619385] [2022-11-20 11:11:19,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:19,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:19,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:11:19,481 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:11:19,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:11:19,488 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:11:19,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:19,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1946442, now seen corresponding path program 1 times [2022-11-20 11:11:19,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:19,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290600480] [2022-11-20 11:11:19,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:19,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:19,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:11:19,501 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:11:19,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:11:19,507 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:11:19,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:19,508 INFO L85 PathProgramCache]: Analyzing trace with hash 768793561, now seen corresponding path program 1 times [2022-11-20 11:11:19,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:19,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458292201] [2022-11-20 11:11:19,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:19,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:19,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:11:19,518 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:11:19,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:11:19,528 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:11:19,572 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 11:11:19,572 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 11:11:19,572 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 11:11:19,573 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 11:11:19,573 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 11:11:19,573 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:11:19,573 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 11:11:19,573 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 11:11:19,573 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration3_Loop [2022-11-20 11:11:19,573 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 11:11:19,573 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 11:11:19,575 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:11:19,580 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:11:19,583 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:11:19,637 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 11:11:19,637 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 11:11:19,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:11:19,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:19,643 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:11:19,647 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2022-11-20 11:11:19,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-20 11:11:19,652 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 11:11:19,652 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:11:19,679 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 11:11:19,680 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_~cond#1=1, ULTIMATE.start___VERIFIER_assert_#in~cond#1=1} Honda state: {ULTIMATE.start___VERIFIER_assert_~cond#1=1, ULTIMATE.start___VERIFIER_assert_#in~cond#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 11:11:19,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:19,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:11:19,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:19,690 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:11:19,705 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 11:11:19,705 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:11:19,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-20 11:11:19,727 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 11:11:19,727 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post4#1=0} Honda state: {ULTIMATE.start_main_#t~post4#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 11:11:19,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:19,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:11:19,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:19,738 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:11:19,771 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 11:11:19,771 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:11:19,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-11-20 11:11:19,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:19,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:11:19,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:19,812 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:11:19,822 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 11:11:19,822 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:11:19,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-20 11:11:19,875 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 11:11:19,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:19,887 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 11:11:19,888 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 11:11:19,888 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 11:11:19,888 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 11:11:19,888 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 11:11:19,888 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:11:19,888 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 11:11:19,888 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 11:11:19,889 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration3_Loop [2022-11-20 11:11:19,889 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 11:11:19,889 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 11:11:19,890 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:11:19,897 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:11:19,899 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:11:19,948 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 11:11:19,948 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 11:11:19,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:11:19,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:19,950 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:11:19,953 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 11:11:19,966 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 11:11:19,967 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 11:11:19,967 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 11:11:19,967 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 11:11:19,967 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 11:11:19,969 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 11:11:19,969 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 11:11:19,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-20 11:11:19,979 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 11:11:19,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:19,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:11:19,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:19,989 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:11:19,996 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 11:11:20,008 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 11:11:20,008 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 11:11:20,009 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 11:11:20,009 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 11:11:20,009 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 11:11:20,010 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 11:11:20,010 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 11:11:20,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-20 11:11:20,027 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 11:11:20,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:20,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:11:20,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:20,032 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:11:20,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-11-20 11:11:20,035 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 11:11:20,045 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 11:11:20,045 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 11:11:20,045 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 11:11:20,046 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 11:11:20,046 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 11:11:20,047 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 11:11:20,047 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 11:11:20,059 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 11:11:20,063 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-20 11:11:20,063 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-20 11:11:20,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:11:20,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:20,068 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:11:20,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-11-20 11:11:20,073 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 11:11:20,073 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 11:11:20,073 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 11:11:20,073 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~n~0#1) = -1*ULTIMATE.start_main_~i~0#1 + 1*ULTIMATE.start_main_~n~0#1 Supporting invariants [] [2022-11-20 11:11:20,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:20,086 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 11:11:20,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:20,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:20,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:11:20,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:20,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:20,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:11:20,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:20,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:20,188 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-20 11:11:20,188 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 21 transitions. cyclomatic complexity: 6 Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:20,220 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 21 transitions. cyclomatic complexity: 6. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 38 states and 47 transitions. Complement of second has 7 states. [2022-11-20 11:11:20,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-20 11:11:20,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:20,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2022-11-20 11:11:20,223 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 6 letters. Loop has 4 letters. [2022-11-20 11:11:20,224 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:11:20,224 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 4 letters. [2022-11-20 11:11:20,224 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:11:20,224 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 6 letters. Loop has 8 letters. [2022-11-20 11:11:20,225 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:11:20,225 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 47 transitions. [2022-11-20 11:11:20,231 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-20 11:11:20,237 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 24 states and 30 transitions. [2022-11-20 11:11:20,237 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2022-11-20 11:11:20,238 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2022-11-20 11:11:20,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 30 transitions. [2022-11-20 11:11:20,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 11:11:20,238 INFO L218 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-11-20 11:11:20,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 30 transitions. [2022-11-20 11:11:20,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 17. [2022-11-20 11:11:20,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:20,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2022-11-20 11:11:20,244 INFO L240 hiAutomatonCegarLoop]: Abstraction has 17 states and 20 transitions. [2022-11-20 11:11:20,244 INFO L428 stractBuchiCegarLoop]: Abstraction has 17 states and 20 transitions. [2022-11-20 11:11:20,244 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-20 11:11:20,244 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 20 transitions. [2022-11-20 11:11:20,244 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-20 11:11:20,245 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 11:11:20,245 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 11:11:20,245 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:20,245 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-20 11:11:20,246 INFO L748 eck$LassoCheckResult]: Stem: 234#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 235#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~post4#1, main_#t~nondet5#1, main_#t~post3#1, main_~i~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1;havoc main_~i~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~l~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 239#L28 assume !!(main_~l~0#1 > 0); 240#L29 assume !!(main_~l~0#1 < 1000000); 236#L30 assume !!(main_~n~0#1 < 1000000);main_~k~0#1 := 1; 237#L31-3 assume !!(main_~k~0#1 < main_~n~0#1);main_~i~0#1 := main_~l~0#1; 229#L32-3 assume !(main_~i~0#1 < main_~n~0#1); 238#L32-4 assume !(0 != main_#t~nondet5#1);havoc main_#t~nondet5#1; 241#L31-2 main_#t~post3#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 242#L31-3 assume !!(main_~k~0#1 < main_~n~0#1);main_~i~0#1 := main_~l~0#1; 227#L32-3 [2022-11-20 11:11:20,246 INFO L750 eck$LassoCheckResult]: Loop: 227#L32-3 assume !!(main_~i~0#1 < main_~n~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if 1 <= main_~i~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 230#L18 assume !(0 == __VERIFIER_assert_~cond#1); 231#L18-2 assume { :end_inline___VERIFIER_assert } true; 226#L32-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 227#L32-3 [2022-11-20 11:11:20,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:20,246 INFO L85 PathProgramCache]: Analyzing trace with hash 768746824, now seen corresponding path program 1 times [2022-11-20 11:11:20,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:20,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116779289] [2022-11-20 11:11:20,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:20,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:20,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:11:20,258 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:11:20,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:11:20,269 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:11:20,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:20,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1946442, now seen corresponding path program 2 times [2022-11-20 11:11:20,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:20,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939225363] [2022-11-20 11:11:20,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:20,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:20,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:11:20,276 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:11:20,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:11:20,282 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:11:20,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:20,282 INFO L85 PathProgramCache]: Analyzing trace with hash 37608721, now seen corresponding path program 1 times [2022-11-20 11:11:20,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:20,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869346421] [2022-11-20 11:11:20,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:20,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:20,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:20,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:20,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869346421] [2022-11-20 11:11:20,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869346421] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:11:20,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084630700] [2022-11-20 11:11:20,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:20,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:20,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:20,366 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:11:20,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-20 11:11:20,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:20,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:11:20,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:20,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:20,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:11:20,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:20,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084630700] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:11:20,522 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:11:20,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-11-20 11:11:20,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771582964] [2022-11-20 11:11:20,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:11:20,578 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 11:11:20,578 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 11:11:20,578 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 11:11:20,578 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 11:11:20,578 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 11:11:20,579 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:11:20,579 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 11:11:20,579 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 11:11:20,579 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration4_Loop [2022-11-20 11:11:20,579 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 11:11:20,579 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 11:11:20,582 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:11:20,588 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:11:20,596 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:11:20,640 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 11:11:20,640 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 11:11:20,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:11:20,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:20,647 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:11:20,657 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 11:11:20,657 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:11:20,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-11-20 11:11:20,687 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 11:11:20,688 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_~cond#1=1, ULTIMATE.start___VERIFIER_assert_#in~cond#1=1} Honda state: {ULTIMATE.start___VERIFIER_assert_~cond#1=1, ULTIMATE.start___VERIFIER_assert_#in~cond#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 11:11:20,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:20,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:11:20,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:20,693 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:11:20,709 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 11:11:20,709 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:11:20,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-11-20 11:11:20,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:20,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:11:20,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:20,747 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:11:20,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-11-20 11:11:20,759 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 11:11:20,759 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:11:20,812 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 11:11:20,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:20,821 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 11:11:20,822 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 11:11:20,822 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 11:11:20,822 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 11:11:20,822 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 11:11:20,822 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:11:20,822 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 11:11:20,822 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 11:11:20,822 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration4_Loop [2022-11-20 11:11:20,822 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 11:11:20,822 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 11:11:20,823 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:11:20,829 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:11:20,838 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:11:20,881 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 11:11:20,881 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 11:11:20,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:11:20,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:20,882 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:11:20,893 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 11:11:20,906 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 11:11:20,906 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 11:11:20,906 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 11:11:20,906 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 11:11:20,906 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 11:11:20,910 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 11:11:20,910 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 11:11:20,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-11-20 11:11:20,923 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 11:11:20,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:20,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:11:20,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:20,931 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:11:20,940 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 [2022-11-20 11:11:20,954 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 11:11:20,955 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 11:11:20,955 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 11:11:20,955 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 11:11:20,955 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 11:11:20,956 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 11:11:20,956 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 11:11:20,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-11-20 11:11:20,972 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 11:11:20,976 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-20 11:11:20,976 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-20 11:11:20,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:11:20,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:20,979 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:11:20,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-11-20 11:11:20,980 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 11:11:20,980 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 11:11:20,980 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 11:11:20,980 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~n~0#1) = -1*ULTIMATE.start_main_~i~0#1 + 1*ULTIMATE.start_main_~n~0#1 Supporting invariants [] [2022-11-20 11:11:20,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:20,985 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 11:11:21,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:21,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:21,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:11:21,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:21,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:21,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:11:21,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:21,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:21,078 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-20 11:11:21,079 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 20 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:21,110 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 20 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 30 states and 37 transitions. Complement of second has 7 states. [2022-11-20 11:11:21,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-20 11:11:21,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:21,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2022-11-20 11:11:21,112 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 4 letters. [2022-11-20 11:11:21,112 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:11:21,113 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-20 11:11:21,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:21,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:21,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:11:21,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:21,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:11:21,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:21,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:21,188 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-20 11:11:21,188 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 20 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:21,202 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 20 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 30 states and 37 transitions. Complement of second has 7 states. [2022-11-20 11:11:21,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-20 11:11:21,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:21,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2022-11-20 11:11:21,203 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 4 letters. [2022-11-20 11:11:21,204 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:11:21,204 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-20 11:11:21,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:21,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:21,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:11:21,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:21,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:21,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:11:21,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:21,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:21,270 INFO L141 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 [2022-11-20 11:11:21,270 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 20 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:21,287 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 20 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 27 states and 32 transitions. Complement of second has 6 states. [2022-11-20 11:11:21,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-20 11:11:21,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:21,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 23 transitions. [2022-11-20 11:11:21,289 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 10 letters. Loop has 4 letters. [2022-11-20 11:11:21,289 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:11:21,289 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 14 letters. Loop has 4 letters. [2022-11-20 11:11:21,289 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:11:21,289 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 10 letters. Loop has 8 letters. [2022-11-20 11:11:21,290 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:11:21,290 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 32 transitions. [2022-11-20 11:11:21,291 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-20 11:11:21,291 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 0 states and 0 transitions. [2022-11-20 11:11:21,291 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-20 11:11:21,291 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-20 11:11:21,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-20 11:11:21,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:11:21,292 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 11:11:21,292 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 11:11:21,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:21,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:11:21,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:11:21,296 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2022-11-20 11:11:21,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:21,296 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-11-20 11:11:21,297 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2022-11-20 11:11:21,297 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-20 11:11:21,297 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 11:11:21,297 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-20 11:11:21,297 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-20 11:11:21,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-20 11:11:21,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:11:21,298 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 11:11:21,298 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 11:11:21,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:11:21,299 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 11:11:21,301 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-20 11:11:21,301 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-11-20 11:11:21,301 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-20 11:11:21,301 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-11-20 11:11:21,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 11:11:21 BoogieIcfgContainer [2022-11-20 11:11:21,311 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-20 11:11:21,312 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 11:11:21,312 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 11:11:21,312 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 11:11:21,313 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:11:17" (3/4) ... [2022-11-20 11:11:21,316 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 11:11:21,316 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 11:11:21,324 INFO L158 Benchmark]: Toolchain (without parser) took 4538.48ms. Allocated memory was 134.2MB in the beginning and 205.5MB in the end (delta: 71.3MB). Free memory was 69.2MB in the beginning and 101.5MB in the end (delta: -32.3MB). Peak memory consumption was 40.7MB. Max. memory is 16.1GB. [2022-11-20 11:11:21,324 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 134.2MB. Free memory is still 108.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:11:21,325 INFO L158 Benchmark]: CACSL2BoogieTranslator took 272.50ms. Allocated memory was 134.2MB in the beginning and 169.9MB in the end (delta: 35.7MB). Free memory was 69.0MB in the beginning and 137.1MB in the end (delta: -68.1MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. [2022-11-20 11:11:21,325 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.03ms. Allocated memory is still 169.9MB. Free memory was 137.1MB in the beginning and 135.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:11:21,326 INFO L158 Benchmark]: Boogie Preprocessor took 19.34ms. Allocated memory is still 169.9MB. Free memory was 135.8MB in the beginning and 134.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:11:21,326 INFO L158 Benchmark]: RCFGBuilder took 356.81ms. Allocated memory is still 169.9MB. Free memory was 134.2MB in the beginning and 124.5MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 11:11:21,327 INFO L158 Benchmark]: BuchiAutomizer took 3849.20ms. Allocated memory was 169.9MB in the beginning and 205.5MB in the end (delta: 35.7MB). Free memory was 123.8MB in the beginning and 102.5MB in the end (delta: 21.2MB). Peak memory consumption was 56.3MB. Max. memory is 16.1GB. [2022-11-20 11:11:21,327 INFO L158 Benchmark]: Witness Printer took 4.29ms. Allocated memory is still 205.5MB. Free memory was 102.5MB in the beginning and 101.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:11:21,329 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 134.2MB. Free memory is still 108.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 272.50ms. Allocated memory was 134.2MB in the beginning and 169.9MB in the end (delta: 35.7MB). Free memory was 69.0MB in the beginning and 137.1MB in the end (delta: -68.1MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.03ms. Allocated memory is still 169.9MB. Free memory was 137.1MB in the beginning and 135.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 19.34ms. Allocated memory is still 169.9MB. Free memory was 135.8MB in the beginning and 134.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 356.81ms. Allocated memory is still 169.9MB. Free memory was 134.2MB in the beginning and 124.5MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 3849.20ms. Allocated memory was 169.9MB in the beginning and 205.5MB in the end (delta: 35.7MB). Free memory was 123.8MB in the beginning and 102.5MB in the end (delta: 21.2MB). Peak memory consumption was 56.3MB. Max. memory is 16.1GB. * Witness Printer took 4.29ms. Allocated memory is still 205.5MB. Free memory was 102.5MB in the beginning and 101.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function n + -1 * k and consists of 3 locations. One deterministic module has affine ranking function -1 * i + n and consists of 4 locations. One nondeterministic module has affine ranking function -1 * i + n and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.7s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 75 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 70 mSDsluCounter, 115 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 32 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 42 IncrementalHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 83 mSDtfsCounter, 42 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax100 hnf100 lsp73 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq155 hnf93 smp100 dnf100 smp100 tf109 neg99 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 42ms VariablesStem: 0 VariablesLoop: 1 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 0 MotzkinApplications: 4 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.8s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-11-20 11:11:21,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:21,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:21,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:21,945 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8128ff0-dd04-4d5d-b584-6cf5e99b17cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE