./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-invgen/fragtest_simple.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-invgen/fragtest_simple.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa --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 be3b53cc5f9badbf5402cafcfa5766831674eb009261bc7c1bcbe9580aece38e --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 00:19:32,984 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 00:19:32,986 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 00:19:33,007 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 00:19:33,008 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 00:19:33,009 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 00:19:33,010 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 00:19:33,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 00:19:33,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 00:19:33,014 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 00:19:33,015 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 00:19:33,016 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 00:19:33,016 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 00:19:33,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 00:19:33,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 00:19:33,020 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 00:19:33,021 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 00:19:33,021 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 00:19:33,023 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 00:19:33,025 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 00:19:33,026 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 00:19:33,028 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 00:19:33,030 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 00:19:33,031 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 00:19:33,034 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 00:19:33,035 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 00:19:33,035 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 00:19:33,036 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 00:19:33,037 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 00:19:33,038 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 00:19:33,038 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 00:19:33,039 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 00:19:33,040 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 00:19:33,041 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 00:19:33,042 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 00:19:33,042 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 00:19:33,043 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 00:19:33,044 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 00:19:33,044 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 00:19:33,045 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 00:19:33,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 00:19:33,047 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-07 00:19:33,067 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 00:19:33,067 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 00:19:33,067 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 00:19:33,067 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 00:19:33,068 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 00:19:33,068 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 00:19:33,069 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 00:19:33,069 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-07 00:19:33,069 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-07 00:19:33,069 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-07 00:19:33,069 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-07 00:19:33,069 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-07 00:19:33,069 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-07 00:19:33,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 00:19:33,070 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 00:19:33,070 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-07 00:19:33,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 00:19:33,070 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 00:19:33,070 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 00:19:33,070 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-07 00:19:33,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-07 00:19:33,071 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-07 00:19:33,071 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 00:19:33,071 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 00:19:33,071 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-07 00:19:33,071 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 00:19:33,071 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-07 00:19:33,071 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 00:19:33,072 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 00:19:33,072 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 00:19:33,072 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 00:19:33,072 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 00:19:33,073 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-07 00:19:33,073 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_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be3b53cc5f9badbf5402cafcfa5766831674eb009261bc7c1bcbe9580aece38e [2021-12-07 00:19:33,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 00:19:33,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 00:19:33,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 00:19:33,284 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 00:19:33,285 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 00:19:33,286 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/loop-invgen/fragtest_simple.i [2021-12-07 00:19:33,328 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/data/39dc5032f/5f6812501ed34cb3883382f6eec5a99a/FLAG7a1906f26 [2021-12-07 00:19:33,735 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 00:19:33,736 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/sv-benchmarks/c/loop-invgen/fragtest_simple.i [2021-12-07 00:19:33,740 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/data/39dc5032f/5f6812501ed34cb3883382f6eec5a99a/FLAG7a1906f26 [2021-12-07 00:19:33,752 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/data/39dc5032f/5f6812501ed34cb3883382f6eec5a99a [2021-12-07 00:19:33,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 00:19:33,756 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 00:19:33,758 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 00:19:33,758 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 00:19:33,761 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 00:19:33,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:19:33" (1/1) ... [2021-12-07 00:19:33,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2194a630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:19:33, skipping insertion in model container [2021-12-07 00:19:33,763 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:19:33" (1/1) ... [2021-12-07 00:19:33,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 00:19:33,784 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 00:19:33,910 WARN L230 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_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/sv-benchmarks/c/loop-invgen/fragtest_simple.i[893,906] [2021-12-07 00:19:33,919 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:19:33,925 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 00:19:33,934 WARN L230 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_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/sv-benchmarks/c/loop-invgen/fragtest_simple.i[893,906] [2021-12-07 00:19:33,937 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:19:33,947 INFO L208 MainTranslator]: Completed translation [2021-12-07 00:19:33,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:19:33 WrapperNode [2021-12-07 00:19:33,948 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 00:19:33,948 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 00:19:33,948 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 00:19:33,948 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 00:19:33,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:19:33" (1/1) ... [2021-12-07 00:19:33,961 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:19:33" (1/1) ... [2021-12-07 00:19:33,978 INFO L137 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56 [2021-12-07 00:19:33,979 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 00:19:33,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 00:19:33,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 00:19:33,979 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 00:19:33,987 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:19:33" (1/1) ... [2021-12-07 00:19:33,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:19:33" (1/1) ... [2021-12-07 00:19:33,989 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:19:33" (1/1) ... [2021-12-07 00:19:33,989 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:19:33" (1/1) ... [2021-12-07 00:19:33,992 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:19:33" (1/1) ... [2021-12-07 00:19:33,996 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:19:33" (1/1) ... [2021-12-07 00:19:33,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:19:33" (1/1) ... [2021-12-07 00:19:33,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 00:19:34,000 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 00:19:34,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 00:19:34,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 00:19:34,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:19:33" (1/1) ... [2021-12-07 00:19:34,009 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:19:34,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:19:34,030 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:19:34,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-07 00:19:34,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 00:19:34,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 00:19:34,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 00:19:34,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 00:19:34,108 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 00:19:34,110 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 00:19:34,180 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 00:19:34,186 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 00:19:34,186 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-07 00:19:34,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:19:34 BoogieIcfgContainer [2021-12-07 00:19:34,188 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 00:19:34,189 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-07 00:19:34,189 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-07 00:19:34,193 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-07 00:19:34,193 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-07 00:19:34,193 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 12:19:33" (1/3) ... [2021-12-07 00:19:34,194 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3d5066d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 12:19:34, skipping insertion in model container [2021-12-07 00:19:34,194 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-07 00:19:34,195 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:19:33" (2/3) ... [2021-12-07 00:19:34,195 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3d5066d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 12:19:34, skipping insertion in model container [2021-12-07 00:19:34,195 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-07 00:19:34,195 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:19:34" (3/3) ... [2021-12-07 00:19:34,196 INFO L388 chiAutomizerObserver]: Analyzing ICFG fragtest_simple.i [2021-12-07 00:19:34,240 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-07 00:19:34,240 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-07 00:19:34,240 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-07 00:19:34,241 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-07 00:19:34,241 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-07 00:19:34,241 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-07 00:19:34,241 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-07 00:19:34,241 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-07 00:19:34,254 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) [2021-12-07 00:19:34,267 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 7 [2021-12-07 00:19:34,267 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 00:19:34,267 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 00:19:34,271 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-07 00:19:34,271 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-07 00:19:34,271 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-07 00:19:34,271 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) [2021-12-07 00:19:34,273 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 7 [2021-12-07 00:19:34,273 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 00:19:34,273 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 00:19:34,273 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-07 00:19:34,273 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-07 00:19:34,278 INFO L791 eck$LassoCheckResult]: Stem: 5#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); 7#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~nondet3#1, main_~i~0#1, main_~pvlen~0#1, main_~tmp___1~0#1, main_~k~0#1, main_~n~0#1, main_~j~0#1;havoc main_~i~0#1;havoc main_~pvlen~0#1;havoc main_~tmp___1~0#1;main_~k~0#1 := 0;havoc main_~n~0#1;main_~i~0#1 := 0;main_~pvlen~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 16#L31-2true [2021-12-07 00:19:34,278 INFO L793 eck$LassoCheckResult]: Loop: 16#L31-2true assume !!(0 != main_#t~nondet2#1 && main_~i~0#1 <= 1000000);havoc main_#t~nondet2#1;main_~i~0#1 := 1 + main_~i~0#1; 16#L31-2true [2021-12-07 00:19:34,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:19:34,282 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-07 00:19:34,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:19:34,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545081237] [2021-12-07 00:19:34,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:19:34,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:19:34,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:19:34,347 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:19:34,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:19:34,364 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:19:34,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:19:34,366 INFO L85 PathProgramCache]: Analyzing trace with hash 42, now seen corresponding path program 1 times [2021-12-07 00:19:34,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:19:34,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536971797] [2021-12-07 00:19:34,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:19:34,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:19:34,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:19:34,373 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:19:34,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:19:34,377 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:19:34,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:19:34,379 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2021-12-07 00:19:34,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:19:34,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628648217] [2021-12-07 00:19:34,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:19:34,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:19:34,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:19:34,388 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:19:34,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:19:34,395 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:19:34,437 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 00:19:34,438 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 00:19:34,438 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 00:19:34,438 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 00:19:34,438 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-07 00:19:34,438 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:19:34,438 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 00:19:34,438 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 00:19:34,438 INFO L133 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration1_Loop [2021-12-07 00:19:34,439 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 00:19:34,439 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 00:19:34,451 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:19:34,459 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:19:34,488 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 00:19:34,489 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-07 00:19:34,490 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:19:34,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:19:34,491 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:19:34,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-12-07 00:19:34,493 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 00:19:34,493 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:19:34,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-12-07 00:19:34,530 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:19:34,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:19:34,531 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:19:34,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-12-07 00:19:34,537 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-07 00:19:34,537 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:19:34,578 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-07 00:19:34,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-12-07 00:19:34,580 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 00:19:34,580 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 00:19:34,581 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 00:19:34,581 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 00:19:34,581 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-07 00:19:34,581 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:19:34,581 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 00:19:34,581 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 00:19:34,581 INFO L133 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration1_Loop [2021-12-07 00:19:34,581 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 00:19:34,581 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 00:19:34,583 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:19:34,589 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:19:34,611 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 00:19:34,614 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-07 00:19:34,615 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:19:34,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:19:34,616 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:19:34,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-12-07 00:19:34,617 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-07 00:19:34,625 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:19:34,625 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 00:19:34,625 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:19:34,625 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:19:34,626 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:19:34,628 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-07 00:19:34,628 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 00:19:34,630 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-07 00:19:34,635 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-07 00:19:34,636 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-07 00:19:34,637 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:19:34,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:19:34,638 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:19:34,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-12-07 00:19:34,665 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-07 00:19:34,665 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-07 00:19:34,666 INFO L513 LassoAnalysis]: Proved termination. [2021-12-07 00:19:34,666 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 2000001 Supporting invariants [] [2021-12-07 00:19:34,685 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-12-07 00:19:34,687 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-07 00:19:34,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:19:34,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:19:34,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:19:34,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:19:34,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:19:34,724 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 00:19:34,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:19:34,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:19:34,747 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-12-07 00:19:34,749 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. 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 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:19:34,780 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. 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 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 32 states and 50 transitions. Complement of second has 6 states. [2021-12-07 00:19:34,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-07 00:19:34,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:19:34,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 26 transitions. [2021-12-07 00:19:34,786 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 2 letters. Loop has 1 letters. [2021-12-07 00:19:34,787 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:19:34,787 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 3 letters. Loop has 1 letters. [2021-12-07 00:19:34,787 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:19:34,787 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 2 letters. Loop has 2 letters. [2021-12-07 00:19:34,787 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:19:34,788 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 50 transitions. [2021-12-07 00:19:34,790 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-12-07 00:19:34,792 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 13 states and 19 transitions. [2021-12-07 00:19:34,793 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-12-07 00:19:34,793 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2021-12-07 00:19:34,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 19 transitions. [2021-12-07 00:19:34,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:19:34,794 INFO L681 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2021-12-07 00:19:34,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 19 transitions. [2021-12-07 00:19:34,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-12-07 00:19:34,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:19:34,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 19 transitions. [2021-12-07 00:19:34,811 INFO L704 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2021-12-07 00:19:34,811 INFO L587 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2021-12-07 00:19:34,811 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-07 00:19:34,811 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 19 transitions. [2021-12-07 00:19:34,812 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-12-07 00:19:34,812 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 00:19:34,812 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 00:19:34,812 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-12-07 00:19:34,812 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-07 00:19:34,812 INFO L791 eck$LassoCheckResult]: Stem: 84#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); 85#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~nondet3#1, main_~i~0#1, main_~pvlen~0#1, main_~tmp___1~0#1, main_~k~0#1, main_~n~0#1, main_~j~0#1;havoc main_~i~0#1;havoc main_~pvlen~0#1;havoc main_~tmp___1~0#1;main_~k~0#1 := 0;havoc main_~n~0#1;main_~i~0#1 := 0;main_~pvlen~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 91#L31-2 assume !(0 != main_#t~nondet2#1 && main_~i~0#1 <= 1000000);havoc main_#t~nondet2#1; 92#L31-3 assume !(main_~i~0#1 > main_~pvlen~0#1); 89#L34-1 main_~i~0#1 := 0; 90#L38-2 [2021-12-07 00:19:34,812 INFO L793 eck$LassoCheckResult]: Loop: 90#L38-2 assume !!(0 != main_#t~nondet3#1 && main_~i~0#1 <= 1000000);havoc main_#t~nondet3#1;main_~tmp___1~0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_~i~0#1;main_~k~0#1 := 1 + main_~k~0#1; 90#L38-2 [2021-12-07 00:19:34,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:19:34,813 INFO L85 PathProgramCache]: Analyzing trace with hash 28697992, now seen corresponding path program 1 times [2021-12-07 00:19:34,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:19:34,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218145023] [2021-12-07 00:19:34,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:19:34,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:19:34,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:19:34,819 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:19:34,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:19:34,825 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:19:34,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:19:34,826 INFO L85 PathProgramCache]: Analyzing trace with hash 61, now seen corresponding path program 1 times [2021-12-07 00:19:34,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:19:34,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518441036] [2021-12-07 00:19:34,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:19:34,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:19:34,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:19:34,830 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:19:34,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:19:34,833 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:19:34,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:19:34,834 INFO L85 PathProgramCache]: Analyzing trace with hash 889637782, now seen corresponding path program 1 times [2021-12-07 00:19:34,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:19:34,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362139566] [2021-12-07 00:19:34,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:19:34,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:19:34,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:19:34,841 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:19:34,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:19:34,848 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:19:34,870 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 00:19:34,870 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 00:19:34,871 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 00:19:34,871 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 00:19:34,871 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-07 00:19:34,871 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:19:34,871 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 00:19:34,871 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 00:19:34,871 INFO L133 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration2_Loop [2021-12-07 00:19:34,871 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 00:19:34,871 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 00:19:34,872 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:19:34,874 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:19:34,879 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:19:34,904 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 00:19:34,904 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-07 00:19:34,905 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:19:34,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:19:34,905 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:19:34,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-12-07 00:19:34,906 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 00:19:34,907 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:19:34,933 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2021-12-07 00:19:34,933 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:19:34,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:19:34,934 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:19:34,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-12-07 00:19:34,938 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-07 00:19:34,939 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:19:34,974 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-07 00:19:34,974 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~k~0#1=0} Honda state: {ULTIMATE.start_main_~k~0#1=0} Generalized eigenvectors: [{ULTIMATE.start_main_~k~0#1=-1}, {ULTIMATE.start_main_~k~0#1=-1}, {ULTIMATE.start_main_~k~0#1=3}] Lambdas: [0, 4, 1] Nus: [1, 1] [2021-12-07 00:19:34,992 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2021-12-07 00:19:34,992 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:19:34,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:19:34,993 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:19:34,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-12-07 00:19:34,998 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 00:19:34,998 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:19:35,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-12-07 00:19:35,024 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:19:35,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:19:35,025 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:19:35,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-12-07 00:19:35,026 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-07 00:19:35,026 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:19:35,062 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-07 00:19:35,064 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2021-12-07 00:19:35,065 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 00:19:35,065 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 00:19:35,065 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 00:19:35,065 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 00:19:35,065 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-07 00:19:35,065 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:19:35,065 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 00:19:35,065 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 00:19:35,065 INFO L133 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration2_Loop [2021-12-07 00:19:35,065 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 00:19:35,065 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 00:19:35,066 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:19:35,069 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:19:35,073 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:19:35,096 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 00:19:35,096 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-07 00:19:35,096 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:19:35,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:19:35,097 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:19:35,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-12-07 00:19:35,098 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-07 00:19:35,105 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:19:35,105 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 00:19:35,105 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:19:35,105 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:19:35,105 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:19:35,106 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-07 00:19:35,106 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 00:19:35,107 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 00:19:35,139 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2021-12-07 00:19:35,139 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:19:35,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:19:35,140 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:19:35,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-12-07 00:19:35,141 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-07 00:19:35,148 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:19:35,148 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 00:19:35,148 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:19:35,148 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:19:35,148 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:19:35,149 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-07 00:19:35,149 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 00:19:35,151 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-07 00:19:35,154 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-07 00:19:35,154 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-07 00:19:35,154 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:19:35,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:19:35,155 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:19:35,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-12-07 00:19:35,157 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-07 00:19:35,157 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-07 00:19:35,157 INFO L513 LassoAnalysis]: Proved termination. [2021-12-07 00:19:35,157 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 2000001 Supporting invariants [] [2021-12-07 00:19:35,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-12-07 00:19:35,177 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-07 00:19:35,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:19:35,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:19:35,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:19:35,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:19:35,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:19:35,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 00:19:35,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:19:35,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:19:35,203 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-12-07 00:19:35,203 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 19 transitions. cyclomatic complexity: 9 Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:19:35,215 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 19 transitions. cyclomatic complexity: 9. Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 29 states and 40 transitions. Complement of second has 6 states. [2021-12-07 00:19:35,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-07 00:19:35,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:19:35,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2021-12-07 00:19:35,216 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 5 letters. Loop has 1 letters. [2021-12-07 00:19:35,217 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:19:35,217 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 6 letters. Loop has 1 letters. [2021-12-07 00:19:35,217 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:19:35,217 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 5 letters. Loop has 2 letters. [2021-12-07 00:19:35,217 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:19:35,222 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 40 transitions. [2021-12-07 00:19:35,224 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-07 00:19:35,225 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 17 states and 23 transitions. [2021-12-07 00:19:35,225 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2021-12-07 00:19:35,225 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2021-12-07 00:19:35,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 23 transitions. [2021-12-07 00:19:35,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:19:35,225 INFO L681 BuchiCegarLoop]: Abstraction has 17 states and 23 transitions. [2021-12-07 00:19:35,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 23 transitions. [2021-12-07 00:19:35,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-12-07 00:19:35,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.375) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:19:35,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2021-12-07 00:19:35,227 INFO L704 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2021-12-07 00:19:35,227 INFO L587 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2021-12-07 00:19:35,227 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-07 00:19:35,227 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 22 transitions. [2021-12-07 00:19:35,228 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-07 00:19:35,228 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 00:19:35,228 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 00:19:35,228 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:19:35,229 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-07 00:19:35,229 INFO L791 eck$LassoCheckResult]: Stem: 164#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); 165#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~nondet3#1, main_~i~0#1, main_~pvlen~0#1, main_~tmp___1~0#1, main_~k~0#1, main_~n~0#1, main_~j~0#1;havoc main_~i~0#1;havoc main_~pvlen~0#1;havoc main_~tmp___1~0#1;main_~k~0#1 := 0;havoc main_~n~0#1;main_~i~0#1 := 0;main_~pvlen~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 173#L31-2 assume !(0 != main_#t~nondet2#1 && main_~i~0#1 <= 1000000);havoc main_#t~nondet2#1; 174#L31-3 assume !(main_~i~0#1 > main_~pvlen~0#1); 169#L34-1 main_~i~0#1 := 0; 170#L38-2 assume !(0 != main_#t~nondet3#1 && main_~i~0#1 <= 1000000);havoc main_#t~nondet3#1; 167#L38-3 main_~j~0#1 := 0;main_~n~0#1 := main_~i~0#1; 168#L45-2 assume !false;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 >= 0 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 162#L18 assume !(0 == __VERIFIER_assert_~cond#1); 163#L18-2 [2021-12-07 00:19:35,229 INFO L793 eck$LassoCheckResult]: Loop: 163#L18-2 assume { :end_inline___VERIFIER_assert } true;main_~k~0#1 := main_~k~0#1 - 1;main_~i~0#1 := main_~i~0#1 - 1;main_~j~0#1 := 1 + main_~j~0#1; 166#L50 assume !(main_~j~0#1 >= main_~n~0#1); 171#L45-2 assume !false;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 >= 0 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 172#L18 assume !(0 == __VERIFIER_assert_~cond#1); 163#L18-2 [2021-12-07 00:19:35,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:19:35,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1044045579, now seen corresponding path program 1 times [2021-12-07 00:19:35,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:19:35,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670103660] [2021-12-07 00:19:35,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:19:35,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:19:35,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:19:35,242 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:19:35,250 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-12-07 00:19:35,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:19:35,254 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:19:35,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:19:35,254 INFO L85 PathProgramCache]: Analyzing trace with hash 2559565, now seen corresponding path program 1 times [2021-12-07 00:19:35,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:19:35,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745425043] [2021-12-07 00:19:35,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:19:35,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:19:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:19:35,261 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:19:35,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:19:35,269 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:19:35,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:19:35,270 INFO L85 PathProgramCache]: Analyzing trace with hash 667587905, now seen corresponding path program 1 times [2021-12-07 00:19:35,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:19:35,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8874575] [2021-12-07 00:19:35,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:19:35,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:19:35,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2021-12-07 00:19:35,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:19:35,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:19:35,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:19:35,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8874575] [2021-12-07 00:19:35,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8874575] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:19:35,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:19:35,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:19:35,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14112659] [2021-12-07 00:19:35,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:19:35,377 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 00:19:35,377 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 00:19:35,377 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 00:19:35,378 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 00:19:35,378 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-07 00:19:35,378 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:19:35,378 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 00:19:35,378 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 00:19:35,378 INFO L133 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration3_Loop [2021-12-07 00:19:35,378 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 00:19:35,378 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 00:19:35,379 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:19:35,382 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:19:35,386 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:19:35,389 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:19:35,425 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 00:19:35,425 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-07 00:19:35,426 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:19:35,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:19:35,427 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:19:35,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-12-07 00:19:35,428 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 00:19:35,428 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:19:35,453 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2021-12-07 00:19:35,454 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:19:35,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:19:35,455 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:19:35,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-12-07 00:19:35,456 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-07 00:19:35,456 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:19:35,476 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-07 00:19:35,476 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~i~0#1=0} Honda state: {ULTIMATE.start_main_~i~0#1=0} Generalized eigenvectors: [{ULTIMATE.start_main_~i~0#1=-1}, {ULTIMATE.start_main_~i~0#1=-1}, {ULTIMATE.start_main_~i~0#1=1}] Lambdas: [0, 2, 1] Nus: [1, 1] [2021-12-07 00:19:35,495 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2021-12-07 00:19:35,495 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:19:35,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:19:35,495 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:19:35,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-12-07 00:19:35,496 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 00:19:35,497 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:19:35,523 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2021-12-07 00:19:35,523 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:19:35,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:19:35,523 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:19:35,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-12-07 00:19:35,525 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-07 00:19:35,525 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:19:35,830 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-07 00:19:35,832 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2021-12-07 00:19:35,832 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 00:19:35,832 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 00:19:35,832 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 00:19:35,832 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 00:19:35,832 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-07 00:19:35,833 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:19:35,833 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 00:19:35,833 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 00:19:35,833 INFO L133 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration3_Loop [2021-12-07 00:19:35,833 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 00:19:35,833 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 00:19:35,834 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:19:35,836 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:19:35,840 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:19:35,843 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:19:35,873 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 00:19:35,873 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-07 00:19:35,874 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:19:35,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:19:35,874 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:19:35,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-12-07 00:19:35,875 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-07 00:19:35,882 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:19:35,882 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 00:19:35,882 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:19:35,882 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:19:35,883 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:19:35,883 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-07 00:19:35,883 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 00:19:35,885 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 00:19:35,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-12-07 00:19:35,903 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:19:35,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:19:35,904 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:19:35,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-12-07 00:19:35,905 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-07 00:19:35,912 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:19:35,912 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 00:19:35,912 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:19:35,912 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:19:35,912 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:19:35,913 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-07 00:19:35,914 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 00:19:35,915 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 00:19:35,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-12-07 00:19:35,934 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:19:35,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:19:35,935 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:19:35,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-12-07 00:19:35,936 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-07 00:19:35,943 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:19:35,943 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 00:19:35,944 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:19:35,944 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:19:35,944 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:19:35,944 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-07 00:19:35,944 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 00:19:35,946 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-07 00:19:35,949 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-12-07 00:19:35,949 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-07 00:19:35,950 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:19:35,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:19:35,950 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:19:35,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-12-07 00:19:35,952 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-07 00:19:35,952 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-07 00:19:35,952 INFO L513 LassoAnalysis]: Proved termination. [2021-12-07 00:19:35,952 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0#1, ULTIMATE.start_main_~n~0#1) = -1*ULTIMATE.start_main_~j~0#1 + 1*ULTIMATE.start_main_~n~0#1 Supporting invariants [] [2021-12-07 00:19:35,970 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2021-12-07 00:19:35,971 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-07 00:19:35,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:19:35,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:19:35,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:19:35,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:19:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:19:35,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 00:19:35,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:19:36,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:19:36,032 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-07 00:19:36,032 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 22 transitions. cyclomatic complexity: 9 Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:19:36,043 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 22 transitions. cyclomatic complexity: 9. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 27 states and 34 transitions. Complement of second has 7 states. [2021-12-07 00:19:36,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-07 00:19:36,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:19:36,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 25 transitions. [2021-12-07 00:19:36,044 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 9 letters. Loop has 4 letters. [2021-12-07 00:19:36,044 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:19:36,045 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 13 letters. Loop has 4 letters. [2021-12-07 00:19:36,045 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:19:36,045 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 9 letters. Loop has 8 letters. [2021-12-07 00:19:36,045 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:19:36,045 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 34 transitions. [2021-12-07 00:19:36,046 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-07 00:19:36,046 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 0 states and 0 transitions. [2021-12-07 00:19:36,046 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-07 00:19:36,046 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-07 00:19:36,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-07 00:19:36,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:19:36,046 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-07 00:19:36,047 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-07 00:19:36,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:19:36,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:19:36,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:19:36,049 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:19:36,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:19:36,051 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-12-07 00:19:36,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-07 00:19:36,052 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-12-07 00:19:36,052 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-07 00:19:36,052 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-12-07 00:19:36,052 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-07 00:19:36,052 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-07 00:19:36,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-07 00:19:36,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:19:36,052 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-07 00:19:36,052 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-07 00:19:36,052 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-07 00:19:36,052 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-07 00:19:36,052 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-07 00:19:36,052 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-07 00:19:36,052 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-07 00:19:36,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 12:19:36 BoogieIcfgContainer [2021-12-07 00:19:36,057 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-07 00:19:36,058 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-07 00:19:36,058 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-07 00:19:36,058 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-07 00:19:36,058 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:19:34" (3/4) ... [2021-12-07 00:19:36,060 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-07 00:19:36,060 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-07 00:19:36,060 INFO L158 Benchmark]: Toolchain (without parser) took 2304.24ms. Allocated memory is still 98.6MB. Free memory was 61.9MB in the beginning and 37.5MB in the end (delta: 24.4MB). Peak memory consumption was 24.7MB. Max. memory is 16.1GB. [2021-12-07 00:19:36,061 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 98.6MB. Free memory was 78.2MB in the beginning and 78.1MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 00:19:36,061 INFO L158 Benchmark]: CACSL2BoogieTranslator took 189.91ms. Allocated memory is still 98.6MB. Free memory was 61.7MB in the beginning and 74.4MB in the end (delta: -12.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-07 00:19:36,061 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.43ms. Allocated memory is still 98.6MB. Free memory was 74.4MB in the beginning and 72.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 00:19:36,062 INFO L158 Benchmark]: Boogie Preprocessor took 19.96ms. Allocated memory is still 98.6MB. Free memory was 72.9MB in the beginning and 71.9MB in the end (delta: 939.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 00:19:36,062 INFO L158 Benchmark]: RCFGBuilder took 188.59ms. Allocated memory is still 98.6MB. Free memory was 71.5MB in the beginning and 62.7MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-07 00:19:36,063 INFO L158 Benchmark]: BuchiAutomizer took 1868.07ms. Allocated memory is still 98.6MB. Free memory was 62.7MB in the beginning and 37.5MB in the end (delta: 25.3MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. [2021-12-07 00:19:36,063 INFO L158 Benchmark]: Witness Printer took 2.29ms. Allocated memory is still 98.6MB. Free memory is still 37.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 00:19:36,065 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 98.6MB. Free memory was 78.2MB in the beginning and 78.1MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 189.91ms. Allocated memory is still 98.6MB. Free memory was 61.7MB in the beginning and 74.4MB in the end (delta: -12.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.43ms. Allocated memory is still 98.6MB. Free memory was 74.4MB in the beginning and 72.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.96ms. Allocated memory is still 98.6MB. Free memory was 72.9MB in the beginning and 71.9MB in the end (delta: 939.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 188.59ms. Allocated memory is still 98.6MB. Free memory was 71.5MB in the beginning and 62.7MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 1868.07ms. Allocated memory is still 98.6MB. Free memory was 62.7MB in the beginning and 37.5MB in the end (delta: 25.3MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. * Witness Printer took 2.29ms. Allocated memory is still 98.6MB. Free memory is still 37.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * i + 2000001 and consists of 4 locations. One deterministic module has affine ranking function -2 * i + 2000001 and consists of 4 locations. One deterministic module has affine ranking function -1 * j + n and consists of 5 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.8s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 16 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 32 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 29 mSDsluCounter, 37 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20 IncrementalHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 28 mSDtfsCounter, 20 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax100 hnf100 lsp55 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq165 hnf92 smp100 dnf100 smp100 tf112 neg100 sie103 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 50ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-12-07 00:19:36,089 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2021-12-07 00:19:36,331 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9ad7f5-0990-4fd1-81ad-cb6bbd48420c/bin/uautomizer-DrprNOufMa/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