./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loops/sum01_bug02_sum01_bug02_base.case.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_9315ccfe-9f32-460d-b00b-50638112d4f9/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9315ccfe-9f32-460d-b00b-50638112d4f9/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9315ccfe-9f32-460d-b00b-50638112d4f9/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9315ccfe-9f32-460d-b00b-50638112d4f9/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loops/sum01_bug02_sum01_bug02_base.case.i -s /tmp/vcloud-vcloud-master/worker/run_dir_9315ccfe-9f32-460d-b00b-50638112d4f9/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9315ccfe-9f32-460d-b00b-50638112d4f9/bin/uautomizer --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 dfd48abfacd60a3a4485060da29ebb446d23ac13 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 21:08:19,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 21:08:19,961 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 21:08:20,053 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 21:08:20,054 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 21:08:20,056 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 21:08:20,059 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 21:08:20,062 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 21:08:20,065 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 21:08:20,067 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 21:08:20,068 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 21:08:20,070 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 21:08:20,071 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 21:08:20,073 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 21:08:20,075 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 21:08:20,077 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 21:08:20,079 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 21:08:20,080 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 21:08:20,084 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 21:08:20,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 21:08:20,090 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 21:08:20,092 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 21:08:20,095 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 21:08:20,096 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 21:08:20,101 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 21:08:20,102 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 21:08:20,102 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 21:08:20,104 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 21:08:20,105 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 21:08:20,107 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 21:08:20,107 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 21:08:20,109 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 21:08:20,111 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 21:08:20,112 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 21:08:20,114 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 21:08:20,115 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 21:08:20,116 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 21:08:20,117 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 21:08:20,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 21:08:20,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 21:08:20,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 21:08:20,127 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9315ccfe-9f32-460d-b00b-50638112d4f9/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 21:08:20,193 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 21:08:20,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 21:08:20,195 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 21:08:20,195 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 21:08:20,195 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 21:08:20,196 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 21:08:20,196 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 21:08:20,196 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 21:08:20,197 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 21:08:20,197 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 21:08:20,197 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 21:08:20,202 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 21:08:20,202 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 21:08:20,202 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 21:08:20,202 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 21:08:20,203 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 21:08:20,203 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 21:08:20,204 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 21:08:20,204 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 21:08:20,204 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 21:08:20,204 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 21:08:20,205 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 21:08:20,205 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 21:08:20,206 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 21:08:20,206 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 21:08:20,206 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 21:08:20,207 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 21:08:20,207 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 21:08:20,208 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 21:08:20,208 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 21:08:20,209 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 21:08:20,209 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 21:08:20,212 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 21:08:20,213 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-vcloud-master/worker/run_dir_9315ccfe-9f32-460d-b00b-50638112d4f9/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9315ccfe-9f32-460d-b00b-50638112d4f9/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfd48abfacd60a3a4485060da29ebb446d23ac13 [2020-11-29 21:08:20,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 21:08:20,551 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 21:08:20,553 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 21:08:20,554 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 21:08:20,557 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 21:08:20,558 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9315ccfe-9f32-460d-b00b-50638112d4f9/bin/uautomizer/../../sv-benchmarks/c/loops/sum01_bug02_sum01_bug02_base.case.i [2020-11-29 21:08:20,640 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9315ccfe-9f32-460d-b00b-50638112d4f9/bin/uautomizer/data/dd5c7e23c/0ec74af319e94581a796f84f589f9ec1/FLAGdaff4ee67 [2020-11-29 21:08:21,152 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 21:08:21,153 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9315ccfe-9f32-460d-b00b-50638112d4f9/sv-benchmarks/c/loops/sum01_bug02_sum01_bug02_base.case.i [2020-11-29 21:08:21,160 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9315ccfe-9f32-460d-b00b-50638112d4f9/bin/uautomizer/data/dd5c7e23c/0ec74af319e94581a796f84f589f9ec1/FLAGdaff4ee67 [2020-11-29 21:08:21,498 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9315ccfe-9f32-460d-b00b-50638112d4f9/bin/uautomizer/data/dd5c7e23c/0ec74af319e94581a796f84f589f9ec1 [2020-11-29 21:08:21,500 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 21:08:21,502 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 21:08:21,503 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 21:08:21,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 21:08:21,507 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 21:08:21,508 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:08:21" (1/1) ... [2020-11-29 21:08:21,510 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75df03c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:08:21, skipping insertion in model container [2020-11-29 21:08:21,510 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:08:21" (1/1) ... [2020-11-29 21:08:21,517 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 21:08:21,531 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 21:08:21,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:08:21,781 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 21:08:21,808 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:08:21,827 INFO L208 MainTranslator]: Completed translation [2020-11-29 21:08:21,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:08:21 WrapperNode [2020-11-29 21:08:21,832 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 21:08:21,834 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 21:08:21,834 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 21:08:21,834 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 21:08:21,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:08:21" (1/1) ... [2020-11-29 21:08:21,851 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:08:21" (1/1) ... [2020-11-29 21:08:21,872 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 21:08:21,873 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 21:08:21,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 21:08:21,874 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 21:08:21,883 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:08:21" (1/1) ... [2020-11-29 21:08:21,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:08:21" (1/1) ... [2020-11-29 21:08:21,895 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:08:21" (1/1) ... [2020-11-29 21:08:21,895 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:08:21" (1/1) ... [2020-11-29 21:08:21,897 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:08:21" (1/1) ... [2020-11-29 21:08:21,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:08:21" (1/1) ... [2020-11-29 21:08:21,905 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:08:21" (1/1) ... [2020-11-29 21:08:21,914 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 21:08:21,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 21:08:21,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 21:08:21,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 21:08:21,918 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:08:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9315ccfe-9f32-460d-b00b-50638112d4f9/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:22,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 21:08:22,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 21:08:22,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 21:08:22,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 21:08:22,232 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 21:08:22,232 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-29 21:08:22,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:08:22 BoogieIcfgContainer [2020-11-29 21:08:22,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 21:08:22,244 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 21:08:22,244 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 21:08:22,248 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 21:08:22,249 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 21:08:22,249 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 09:08:21" (1/3) ... [2020-11-29 21:08:22,266 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2d418a2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 09:08:22, skipping insertion in model container [2020-11-29 21:08:22,266 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 21:08:22,267 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:08:21" (2/3) ... [2020-11-29 21:08:22,267 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2d418a2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 09:08:22, skipping insertion in model container [2020-11-29 21:08:22,267 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 21:08:22,267 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:08:22" (3/3) ... [2020-11-29 21:08:22,269 INFO L373 chiAutomizerObserver]: Analyzing ICFG sum01_bug02_sum01_bug02_base.case.i [2020-11-29 21:08:22,353 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 21:08:22,353 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 21:08:22,353 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 21:08:22,353 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 21:08:22,353 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 21:08:22,353 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 21:08:22,354 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 21:08:22,354 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 21:08:22,372 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states. [2020-11-29 21:08:22,397 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 21:08:22,398 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:08:22,398 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:08:22,408 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-29 21:08:22,408 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 21:08:22,408 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 21:08:22,409 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states. [2020-11-29 21:08:22,412 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 21:08:22,413 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:08:22,413 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:08:22,414 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-29 21:08:22,414 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 21:08:22,422 INFO L794 eck$LassoCheckResult]: Stem: 10#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(36); 7#L-1true havoc main_#res;havoc main_#t~nondet3, main_#t~post4, main_~i~0, main_~n~0, main_~sn~0;havoc main_~i~0;main_~n~0 := (if main_#t~nondet3 % 4294967296 % 4294967296 <= 2147483647 then main_#t~nondet3 % 4294967296 % 4294967296 else main_#t~nondet3 % 4294967296 % 4294967296 - 4294967296);havoc main_#t~nondet3;main_~sn~0 := 0;main_~i~0 := 1; 9#L24-3true [2020-11-29 21:08:22,423 INFO L796 eck$LassoCheckResult]: Loop: 9#L24-3true assume !!(main_~i~0 <= main_~n~0);main_~sn~0 := 2 + main_~sn~0; 4#L26true assume 4 == main_~i~0;main_~sn~0 := -10; 11#L24-2true main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 9#L24-3true [2020-11-29 21:08:22,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:08:22,439 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2020-11-29 21:08:22,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:08:22,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346168580] [2020-11-29 21:08:22,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:08:22,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:08:22,579 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:08:22,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:08:22,601 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:08:22,627 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:08:22,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:08:22,629 INFO L82 PathProgramCache]: Analyzing trace with hash 39821, now seen corresponding path program 1 times [2020-11-29 21:08:22,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:08:22,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354549550] [2020-11-29 21:08:22,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:08:22,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:08:22,654 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:08:22,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:08:22,664 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:08:22,667 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:08:22,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:08:22,669 INFO L82 PathProgramCache]: Analyzing trace with hash 28698763, now seen corresponding path program 1 times [2020-11-29 21:08:22,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:08:22,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568478161] [2020-11-29 21:08:22,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:08:22,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:08:22,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:08:22,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568478161] [2020-11-29 21:08:22,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:08:22,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:08:22,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219971429] [2020-11-29 21:08:22,887 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:08:22,888 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:08:22,889 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:08:22,889 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:08:22,889 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 21:08:22,889 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:22,889 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:08:22,890 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:08:22,890 INFO L133 ssoRankerPreferences]: Filename of dumped script: sum01_bug02_sum01_bug02_base.case.i_Iteration1_Loop [2020-11-29 21:08:22,890 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:08:22,890 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:08:22,904 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:22,920 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:22,940 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:23,052 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:08:23,052 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9315ccfe-9f32-460d-b00b-50638112d4f9/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:08:23,060 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:08:23,061 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:23,073 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:08:23,073 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~sn~0=-10} Honda state: {ULTIMATE.start_main_~sn~0=-10} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9315ccfe-9f32-460d-b00b-50638112d4f9/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:23,108 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:08:23,108 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9315ccfe-9f32-460d-b00b-50638112d4f9/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:23,150 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 21:08:23,150 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 21:08:23,178 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 21:08:23,204 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:08:23,204 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:08:23,204 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:08:23,205 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:08:23,205 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 21:08:23,205 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:23,205 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:08:23,205 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:08:23,205 INFO L133 ssoRankerPreferences]: Filename of dumped script: sum01_bug02_sum01_bug02_base.case.i_Iteration1_Loop [2020-11-29 21:08:23,205 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:08:23,206 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:08:23,207 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:23,217 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:23,239 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:23,312 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:08:23,316 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9315ccfe-9f32-460d-b00b-50638112d4f9/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:08:23,321 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:08:23,323 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:08:23,323 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:08:23,324 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:08:23,324 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:08:23,324 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:08:23,326 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:08:23,326 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:23,331 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9315ccfe-9f32-460d-b00b-50638112d4f9/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:08:23,378 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:08:23,380 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:08:23,380 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:08:23,381 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:08:23,381 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:08:23,381 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:08:23,384 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:08:23,384 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:23,389 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 21:08:23,394 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 21:08:23,395 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9315ccfe-9f32-460d-b00b-50638112d4f9/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:08:23,407 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 21:08:23,407 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 21:08:23,407 INFO L510 LassoAnalysis]: Proved termination. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:23,408 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 9 Supporting invariants [] [2020-11-29 21:08:23,444 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 21:08:23,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:08:23,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:08:23,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 21:08:23,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:08:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:08:23,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 21:08:23,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:08:23,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:08:23,545 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-29 21:08:23,546 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states. Second operand 4 states. [2020-11-29 21:08:23,666 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states.. Second operand 4 states. Result 36 states and 50 transitions. Complement of second has 7 states. [2020-11-29 21:08:23,666 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 [2020-11-29 21:08:23,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 21:08:23,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 29 transitions. [2020-11-29 21:08:23,671 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 29 transitions. Stem has 2 letters. Loop has 3 letters. [2020-11-29 21:08:23,672 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:08:23,672 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 29 transitions. Stem has 5 letters. Loop has 3 letters. [2020-11-29 21:08:23,673 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:08:23,673 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 29 transitions. Stem has 2 letters. Loop has 6 letters. [2020-11-29 21:08:23,673 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:08:23,674 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 50 transitions. [2020-11-29 21:08:23,679 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 21:08:23,683 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 12 states and 15 transitions. [2020-11-29 21:08:23,684 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-11-29 21:08:23,685 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-11-29 21:08:23,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 15 transitions. [2020-11-29 21:08:23,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 21:08:23,686 INFO L691 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2020-11-29 21:08:23,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 15 transitions. [2020-11-29 21:08:23,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2020-11-29 21:08:23,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-29 21:08:23,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2020-11-29 21:08:23,720 INFO L714 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2020-11-29 21:08:23,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:08:23,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:08:23,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:08:23,724 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. Second operand 3 states. [2020-11-29 21:08:23,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:08:23,742 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2020-11-29 21:08:23,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:08:23,743 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 18 transitions. [2020-11-29 21:08:23,744 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 21:08:23,745 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 15 states and 18 transitions. [2020-11-29 21:08:23,745 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-11-29 21:08:23,745 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-11-29 21:08:23,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 18 transitions. [2020-11-29 21:08:23,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 21:08:23,746 INFO L691 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2020-11-29 21:08:23,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 18 transitions. [2020-11-29 21:08:23,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 12. [2020-11-29 21:08:23,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-29 21:08:23,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2020-11-29 21:08:23,748 INFO L714 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2020-11-29 21:08:23,748 INFO L594 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2020-11-29 21:08:23,748 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 21:08:23,748 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 15 transitions. [2020-11-29 21:08:23,749 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 21:08:23,749 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:08:23,749 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:08:23,750 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-29 21:08:23,750 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 21:08:23,750 INFO L794 eck$LassoCheckResult]: Stem: 127#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(36); 118#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~post4, main_~i~0, main_~n~0, main_~sn~0;havoc main_~i~0;main_~n~0 := (if main_#t~nondet3 % 4294967296 % 4294967296 <= 2147483647 then main_#t~nondet3 % 4294967296 % 4294967296 else main_#t~nondet3 % 4294967296 % 4294967296 - 4294967296);havoc main_#t~nondet3;main_~sn~0 := 0;main_~i~0 := 1; 119#L24-3 assume !!(main_~i~0 <= main_~n~0);main_~sn~0 := 2 + main_~sn~0; 120#L26 [2020-11-29 21:08:23,750 INFO L796 eck$LassoCheckResult]: Loop: 120#L26 assume !(4 == main_~i~0); 121#L24-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 124#L24-3 assume !!(main_~i~0 <= main_~n~0);main_~sn~0 := 2 + main_~sn~0; 120#L26 [2020-11-29 21:08:23,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:08:23,751 INFO L82 PathProgramCache]: Analyzing trace with hash 29863, now seen corresponding path program 1 times [2020-11-29 21:08:23,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:08:23,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357781144] [2020-11-29 21:08:23,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:08:23,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:08:23,769 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:08:23,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:08:23,794 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:08:23,798 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:08:23,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:08:23,799 INFO L82 PathProgramCache]: Analyzing trace with hash 44743, now seen corresponding path program 1 times [2020-11-29 21:08:23,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:08:23,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002134514] [2020-11-29 21:08:23,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:08:23,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:08:23,805 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:08:23,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:08:23,820 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:08:23,822 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:08:23,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:08:23,823 INFO L82 PathProgramCache]: Analyzing trace with hash 889663585, now seen corresponding path program 1 times [2020-11-29 21:08:23,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:08:23,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955999208] [2020-11-29 21:08:23,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:08:23,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:08:23,852 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:08:23,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:08:23,887 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:08:23,892 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:08:23,922 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:08:23,922 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:08:23,922 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:08:23,922 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:08:23,922 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 21:08:23,923 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:23,923 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:08:23,923 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:08:23,923 INFO L133 ssoRankerPreferences]: Filename of dumped script: sum01_bug02_sum01_bug02_base.case.i_Iteration2_Loop [2020-11-29 21:08:23,923 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:08:23,923 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:08:23,924 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:23,931 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:23,934 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:24,011 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:08:24,011 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9315ccfe-9f32-460d-b00b-50638112d4f9/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:08:24,024 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:08:24,024 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9315ccfe-9f32-460d-b00b-50638112d4f9/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:08:24,068 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 21:08:24,068 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:24,086 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:08:24,086 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~sn~0=0} Honda state: {ULTIMATE.start_main_~sn~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~sn~0=1}, {ULTIMATE.start_main_~sn~0=3}, {ULTIMATE.start_main_~sn~0=-2}] Lambdas: [1, 1, 1] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9315ccfe-9f32-460d-b00b-50638112d4f9/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:08:24,131 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:08:24,131 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:24,135 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:08:24,135 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post4=0} Honda state: {ULTIMATE.start_main_#t~post4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9315ccfe-9f32-460d-b00b-50638112d4f9/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:24,186 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:08:24,186 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9315ccfe-9f32-460d-b00b-50638112d4f9/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:08:24,230 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 21:08:24,230 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:24,356 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 21:08:24,358 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:08:24,358 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:08:24,358 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:08:24,358 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:08:24,359 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 21:08:24,359 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:24,359 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:08:24,359 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:08:24,359 INFO L133 ssoRankerPreferences]: Filename of dumped script: sum01_bug02_sum01_bug02_base.case.i_Iteration2_Loop [2020-11-29 21:08:24,359 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:08:24,359 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:08:24,360 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:24,367 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:24,370 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:24,481 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:08:24,481 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9315ccfe-9f32-460d-b00b-50638112d4f9/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:08:24,486 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:08:24,488 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:08:24,489 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:08:24,489 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:08:24,489 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:08:24,489 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:08:24,490 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:08:24,491 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:24,494 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9315ccfe-9f32-460d-b00b-50638112d4f9/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:08:24,539 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:08:24,541 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:08:24,541 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:08:24,542 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:08:24,542 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:08:24,542 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:08:24,543 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:08:24,543 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:24,545 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9315ccfe-9f32-460d-b00b-50638112d4f9/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:24,588 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:08:24,590 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:08:24,590 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:08:24,590 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:08:24,590 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-11-29 21:08:24,590 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:08:24,596 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-11-29 21:08:24,596 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:08:24,601 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 21:08:24,608 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-11-29 21:08:24,608 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9315ccfe-9f32-460d-b00b-50638112d4f9/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:08:24,639 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 21:08:24,639 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 21:08:24,639 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 21:08:24,639 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:24,675 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 21:08:24,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:08:24,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:08:24,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 21:08:24,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:08:24,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:08:24,725 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 21:08:24,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:08:24,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:08:24,752 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-29 21:08:24,752 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5 Second operand 4 states. [2020-11-29 21:08:24,778 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 19 states and 24 transitions. Complement of second has 6 states. [2020-11-29 21:08:24,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 21:08:24,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 21:08:24,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2020-11-29 21:08:24,779 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 3 letters. Loop has 3 letters. [2020-11-29 21:08:24,780 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:08:24,780 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 6 letters. Loop has 3 letters. [2020-11-29 21:08:24,780 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:08:24,780 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 3 letters. Loop has 6 letters. [2020-11-29 21:08:24,780 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:08:24,780 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 24 transitions. [2020-11-29 21:08:24,781 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 21:08:24,782 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 0 states and 0 transitions. [2020-11-29 21:08:24,782 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 21:08:24,782 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 21:08:24,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 21:08:24,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 21:08:24,782 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 21:08:24,782 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 21:08:24,782 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 21:08:24,782 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 21:08:24,782 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 21:08:24,783 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 21:08:24,783 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 21:08:24,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 09:08:24 BoogieIcfgContainer [2020-11-29 21:08:24,788 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 21:08:24,788 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 21:08:24,788 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 21:08:24,788 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 21:08:24,789 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:08:22" (3/4) ... [2020-11-29 21:08:24,792 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 21:08:24,792 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 21:08:24,794 INFO L168 Benchmark]: Toolchain (without parser) took 3290.87 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 67.7 MB in the beginning and 80.6 MB in the end (delta: -12.9 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. [2020-11-29 21:08:24,795 INFO L168 Benchmark]: CDTParser took 1.13 ms. Allocated memory is still 96.5 MB. Free memory was 54.8 MB in the beginning and 54.8 MB in the end (delta: 71.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:08:24,795 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.83 ms. Allocated memory is still 96.5 MB. Free memory was 67.4 MB in the beginning and 74.3 MB in the end (delta: -6.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 21:08:24,796 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.41 ms. Allocated memory is still 96.5 MB. Free memory was 74.3 MB in the beginning and 73.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 21:08:24,797 INFO L168 Benchmark]: Boogie Preprocessor took 41.22 ms. Allocated memory is still 96.5 MB. Free memory was 73.0 MB in the beginning and 72.2 MB in the end (delta: 766.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:08:24,797 INFO L168 Benchmark]: RCFGBuilder took 328.15 ms. Allocated memory is still 96.5 MB. Free memory was 71.8 MB in the beginning and 61.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 21:08:24,798 INFO L168 Benchmark]: BuchiAutomizer took 2543.37 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 61.0 MB in the beginning and 80.6 MB in the end (delta: -19.6 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. [2020-11-29 21:08:24,799 INFO L168 Benchmark]: Witness Printer took 3.74 ms. Allocated memory is still 117.4 MB. Free memory is still 80.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:08:24,803 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.13 ms. Allocated memory is still 96.5 MB. Free memory was 54.8 MB in the beginning and 54.8 MB in the end (delta: 71.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 329.83 ms. Allocated memory is still 96.5 MB. Free memory was 67.4 MB in the beginning and 74.3 MB in the end (delta: -6.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.41 ms. Allocated memory is still 96.5 MB. Free memory was 74.3 MB in the beginning and 73.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.22 ms. Allocated memory is still 96.5 MB. Free memory was 73.0 MB in the beginning and 72.2 MB in the end (delta: 766.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 328.15 ms. Allocated memory is still 96.5 MB. Free memory was 71.8 MB in the beginning and 61.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2543.37 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 61.0 MB in the beginning and 80.6 MB in the end (delta: -19.6 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. * Witness Printer took 3.74 ms. Allocated memory is still 117.4 MB. Free memory is still 80.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * i + 9 and consists of 5 locations. One deterministic module has affine ranking function n + -1 * i and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.4s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 1.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 12 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 14 SDtfs, 15 SDslu, 13 SDs, 0 SdLazy, 30 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf106 lsp72 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq174 hnf93 smp100 dnf132 smp100 tf107 neg97 sie105 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 66ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 0 MotzkinApplications: 4 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...