./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/easy1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0cb6bb13-2fa8-492d-8966-a28da26dddd1/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0cb6bb13-2fa8-492d-8966-a28da26dddd1/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0cb6bb13-2fa8-492d-8966-a28da26dddd1/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0cb6bb13-2fa8-492d-8966-a28da26dddd1/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/easy1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0cb6bb13-2fa8-492d-8966-a28da26dddd1/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0cb6bb13-2fa8-492d-8966-a28da26dddd1/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 64bit --witnessprinter.graph.data.programhash 444b5d8373157a5e55f28060b712b2ca462d0fa9 .............................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 14:54:33,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 14:54:33,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 14:54:33,997 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 14:54:33,998 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 14:54:34,003 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 14:54:34,013 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 14:54:34,023 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 14:54:34,025 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 14:54:34,027 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 14:54:34,029 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 14:54:34,030 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 14:54:34,031 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 14:54:34,032 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 14:54:34,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 14:54:34,035 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 14:54:34,036 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 14:54:34,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 14:54:34,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 14:54:34,042 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 14:54:34,044 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 14:54:34,046 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 14:54:34,047 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 14:54:34,048 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 14:54:34,052 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 14:54:34,052 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 14:54:34,053 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 14:54:34,054 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 14:54:34,054 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 14:54:34,056 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 14:54:34,056 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 14:54:34,057 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 14:54:34,058 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 14:54:34,059 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 14:54:34,060 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 14:54:34,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 14:54:34,062 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 14:54:34,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 14:54:34,063 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 14:54:34,064 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 14:54:34,065 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 14:54:34,066 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0cb6bb13-2fa8-492d-8966-a28da26dddd1/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-12-01 14:54:34,089 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 14:54:34,090 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 14:54:34,091 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 14:54:34,091 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 14:54:34,092 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 14:54:34,092 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-12-01 14:54:34,092 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-12-01 14:54:34,093 INFO L138 SettingsManager]: * Use old map elimination=false [2020-12-01 14:54:34,093 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-12-01 14:54:34,093 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-12-01 14:54:34,094 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-12-01 14:54:34,094 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 14:54:34,094 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-01 14:54:34,094 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 14:54:34,095 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 14:54:34,095 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-12-01 14:54:34,095 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-12-01 14:54:34,096 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-12-01 14:54:34,096 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 14:54:34,096 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-12-01 14:54:34,097 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 14:54:34,097 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-12-01 14:54:34,097 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 14:54:34,098 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 14:54:34,098 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-12-01 14:54:34,098 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 14:54:34,099 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 14:54:34,099 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 14:54:34,099 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-12-01 14:54:34,100 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-12-01 14:54:34,101 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_0cb6bb13-2fa8-492d-8966-a28da26dddd1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0cb6bb13-2fa8-492d-8966-a28da26dddd1/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 444b5d8373157a5e55f28060b712b2ca462d0fa9 [2020-12-01 14:54:34,403 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 14:54:34,433 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 14:54:34,435 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 14:54:34,437 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 14:54:34,438 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 14:54:34,439 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0cb6bb13-2fa8-492d-8966-a28da26dddd1/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/easy1.c [2020-12-01 14:54:34,520 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0cb6bb13-2fa8-492d-8966-a28da26dddd1/bin/uautomizer/data/b802994d0/d75640472cde4942992898433f568b76/FLAGf04b345e8 [2020-12-01 14:54:34,998 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 14:54:34,998 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0cb6bb13-2fa8-492d-8966-a28da26dddd1/sv-benchmarks/c/termination-crafted/easy1.c [2020-12-01 14:54:35,009 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0cb6bb13-2fa8-492d-8966-a28da26dddd1/bin/uautomizer/data/b802994d0/d75640472cde4942992898433f568b76/FLAGf04b345e8 [2020-12-01 14:54:35,400 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0cb6bb13-2fa8-492d-8966-a28da26dddd1/bin/uautomizer/data/b802994d0/d75640472cde4942992898433f568b76 [2020-12-01 14:54:35,404 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 14:54:35,408 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 14:54:35,411 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 14:54:35,411 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 14:54:35,415 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 14:54:35,416 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 02:54:35" (1/1) ... [2020-12-01 14:54:35,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46375001 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:35, skipping insertion in model container [2020-12-01 14:54:35,427 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 02:54:35" (1/1) ... [2020-12-01 14:54:35,434 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 14:54:35,447 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 14:54:35,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 14:54:35,658 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 14:54:35,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 14:54:35,686 INFO L208 MainTranslator]: Completed translation [2020-12-01 14:54:35,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:35 WrapperNode [2020-12-01 14:54:35,687 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 14:54:35,688 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 14:54:35,688 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 14:54:35,688 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 14:54:35,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:35" (1/1) ... [2020-12-01 14:54:35,705 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:35" (1/1) ... [2020-12-01 14:54:35,722 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 14:54:35,725 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 14:54:35,725 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 14:54:35,725 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 14:54:35,733 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:35" (1/1) ... [2020-12-01 14:54:35,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:35" (1/1) ... [2020-12-01 14:54:35,734 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:35" (1/1) ... [2020-12-01 14:54:35,734 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:35" (1/1) ... [2020-12-01 14:54:35,735 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:35" (1/1) ... [2020-12-01 14:54:35,742 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:35" (1/1) ... [2020-12-01 14:54:35,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:35" (1/1) ... [2020-12-01 14:54:35,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 14:54:35,744 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 14:54:35,744 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 14:54:35,745 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 14:54:35,746 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0cb6bb13-2fa8-492d-8966-a28da26dddd1/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 [2020-12-01 14:54:35,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 14:54:35,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 14:54:35,968 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 14:54:35,968 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-12-01 14:54:35,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:54:35 BoogieIcfgContainer [2020-12-01 14:54:35,970 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 14:54:35,972 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-12-01 14:54:35,972 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-12-01 14:54:35,978 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-12-01 14:54:35,979 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-12-01 14:54:35,979 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.12 02:54:35" (1/3) ... [2020-12-01 14:54:35,980 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3459a0af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.12 02:54:35, skipping insertion in model container [2020-12-01 14:54:35,980 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-12-01 14:54:35,981 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:35" (2/3) ... [2020-12-01 14:54:35,981 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3459a0af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.12 02:54:35, skipping insertion in model container [2020-12-01 14:54:35,981 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-12-01 14:54:35,981 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:54:35" (3/3) ... [2020-12-01 14:54:35,984 INFO L389 chiAutomizerObserver]: Analyzing ICFG easy1.c [2020-12-01 14:54:36,054 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-12-01 14:54:36,054 INFO L360 BuchiCegarLoop]: Hoare is false [2020-12-01 14:54:36,055 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-12-01 14:54:36,055 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 14:54:36,055 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 14:54:36,055 INFO L364 BuchiCegarLoop]: Difference is false [2020-12-01 14:54:36,055 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 14:54:36,055 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-12-01 14:54:36,067 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-12-01 14:54:36,086 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-12-01 14:54:36,086 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-12-01 14:54:36,086 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-12-01 14:54:36,091 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-12-01 14:54:36,092 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-12-01 14:54:36,092 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-12-01 14:54:36,092 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-12-01 14:54:36,093 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-12-01 14:54:36,093 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-12-01 14:54:36,093 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-12-01 14:54:36,094 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-12-01 14:54:36,094 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-12-01 14:54:36,100 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := 0;main_~y~0 := 100;main_~z~0 := main_#t~nondet0;havoc main_#t~nondet0; 8#L21-2true [2020-12-01 14:54:36,101 INFO L796 eck$LassoCheckResult]: Loop: 8#L21-2true assume !!(main_~x~0 < 40); 3#L21true assume 0 == main_~z~0;main_~x~0 := 1 + main_~x~0; 8#L21-2true [2020-12-01 14:54:36,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:54:36,108 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-12-01 14:54:36,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:54:36,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968654285] [2020-12-01 14:54:36,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:54:36,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:54:36,198 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:54:36,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:54:36,208 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:54:36,224 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 14:54:36,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:54:36,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2020-12-01 14:54:36,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:54:36,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871154850] [2020-12-01 14:54:36,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:54:36,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:54:36,253 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:54:36,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:54:36,261 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:54:36,263 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 14:54:36,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:54:36,276 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2020-12-01 14:54:36,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:54:36,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362786440] [2020-12-01 14:54:36,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:54:36,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:54:36,285 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:54:36,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:54:36,296 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:54:36,299 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 14:54:36,413 INFO L210 LassoAnalysis]: Preferences: [2020-12-01 14:54:36,414 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-12-01 14:54:36,414 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-12-01 14:54:36,414 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-12-01 14:54:36,415 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-12-01 14:54:36,415 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 14:54:36,415 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-12-01 14:54:36,415 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-12-01 14:54:36,415 INFO L133 ssoRankerPreferences]: Filename of dumped script: easy1.c_Iteration1_Loop [2020-12-01 14:54:36,415 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-12-01 14:54:36,416 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-12-01 14:54:36,451 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:54:36,475 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:54:36,479 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:54:36,483 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:54:36,575 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-12-01 14:54:36,576 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0cb6bb13-2fa8-492d-8966-a28da26dddd1/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) [2020-12-01 14:54:36,589 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-12-01 14:54:36,589 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 [2020-12-01 14:54:36,604 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-12-01 14:54:36,604 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0cb6bb13-2fa8-492d-8966-a28da26dddd1/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 [2020-12-01 14:54:36,633 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-12-01 14:54:36,633 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-12-01 14:54:36,644 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-12-01 14:54:36,644 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0cb6bb13-2fa8-492d-8966-a28da26dddd1/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 [2020-12-01 14:54:36,665 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-12-01 14:54:36,666 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-12-01 14:54:36,692 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-12-01 14:54:36,693 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~z~0=0} Honda state: {ULTIMATE.start_main_~z~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0cb6bb13-2fa8-492d-8966-a28da26dddd1/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) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 14:54:36,720 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-12-01 14:54:36,720 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0cb6bb13-2fa8-492d-8966-a28da26dddd1/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) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 14:54:36,766 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-12-01 14:54:36,766 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-12-01 14:54:36,790 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-12-01 14:54:36,804 INFO L210 LassoAnalysis]: Preferences: [2020-12-01 14:54:36,804 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-12-01 14:54:36,804 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-12-01 14:54:36,805 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-12-01 14:54:36,805 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-12-01 14:54:36,805 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 14:54:36,805 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-12-01 14:54:36,805 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-12-01 14:54:36,805 INFO L133 ssoRankerPreferences]: Filename of dumped script: easy1.c_Iteration1_Loop [2020-12-01 14:54:36,805 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-12-01 14:54:36,805 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-12-01 14:54:36,807 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:54:36,815 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:54:36,818 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:54:36,825 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:54:36,890 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-12-01 14:54:36,894 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0cb6bb13-2fa8-492d-8966-a28da26dddd1/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) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 14:54:36,909 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 [2020-12-01 14:54:36,911 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 14:54:36,911 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 14:54:36,912 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 14:54:36,912 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 14:54:36,917 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-12-01 14:54:36,918 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-12-01 14:54:36,937 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0cb6bb13-2fa8-492d-8966-a28da26dddd1/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) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 14:54:36,967 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 [2020-12-01 14:54:36,969 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 14:54:36,969 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 14:54:36,969 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 14:54:36,969 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 14:54:36,973 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-12-01 14:54:36,974 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-12-01 14:54:36,997 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0cb6bb13-2fa8-492d-8966-a28da26dddd1/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) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 14:54:37,025 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 [2020-12-01 14:54:37,027 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 14:54:37,027 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-12-01 14:54:37,027 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 14:54:37,027 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 14:54:37,028 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 14:54:37,029 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-12-01 14:54:37,029 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-12-01 14:54:37,046 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0cb6bb13-2fa8-492d-8966-a28da26dddd1/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) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 14:54:37,067 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 [2020-12-01 14:54:37,068 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 14:54:37,069 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-12-01 14:54:37,069 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 14:54:37,069 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 14:54:37,069 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 14:54:37,071 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-12-01 14:54:37,071 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-12-01 14:54:37,096 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-12-01 14:54:37,100 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-12-01 14:54:37,100 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0cb6bb13-2fa8-492d-8966-a28da26dddd1/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) [2020-12-01 14:54:37,115 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-12-01 14:54:37,116 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-12-01 14:54:37,116 INFO L510 LassoAnalysis]: Proved termination. [2020-12-01 14:54:37,116 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 79 Supporting invariants [] Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 14:54:37,149 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-12-01 14:54:37,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:54:37,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:54:37,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-01 14:54:37,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 14:54:37,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:54:37,195 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-01 14:54:37,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 14:54:37,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:54:37,226 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 [2020-12-01 14:54:37,228 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 3 states. [2020-12-01 14:54:37,265 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states.. Second operand 3 states. Result 17 states and 22 transitions. Complement of second has 7 states. [2020-12-01 14:54:37,265 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 [2020-12-01 14:54:37,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-12-01 14:54:37,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2020-12-01 14:54:37,269 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 1 letters. Loop has 2 letters. [2020-12-01 14:54:37,269 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-12-01 14:54:37,269 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 3 letters. Loop has 2 letters. [2020-12-01 14:54:37,269 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-12-01 14:54:37,270 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 1 letters. Loop has 4 letters. [2020-12-01 14:54:37,270 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-12-01 14:54:37,271 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 22 transitions. [2020-12-01 14:54:37,273 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-12-01 14:54:37,275 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 0 states and 0 transitions. [2020-12-01 14:54:37,276 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-12-01 14:54:37,277 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-12-01 14:54:37,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-12-01 14:54:37,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-12-01 14:54:37,277 INFO L692 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 14:54:37,278 INFO L715 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 14:54:37,278 INFO L595 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 14:54:37,278 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-12-01 14:54:37,278 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-12-01 14:54:37,278 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-12-01 14:54:37,278 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-12-01 14:54:37,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.12 02:54:37 BoogieIcfgContainer [2020-12-01 14:54:37,283 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-12-01 14:54:37,284 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 14:54:37,284 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 14:54:37,284 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 14:54:37,285 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:54:35" (3/4) ... [2020-12-01 14:54:37,288 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-01 14:54:37,288 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 14:54:37,290 INFO L168 Benchmark]: Toolchain (without parser) took 1880.97 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 79.0 MB in the beginning and 80.3 MB in the end (delta: -1.3 MB). Peak memory consumption was 22.2 MB. Max. memory is 16.1 GB. [2020-12-01 14:54:37,290 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 107.0 MB. Free memory was 66.1 MB in the beginning and 66.0 MB in the end (delta: 45.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 14:54:37,291 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.14 ms. Allocated memory is still 107.0 MB. Free memory was 79.0 MB in the beginning and 86.0 MB in the end (delta: -7.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-01 14:54:37,292 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.44 ms. Allocated memory is still 107.0 MB. Free memory was 86.0 MB in the beginning and 84.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 14:54:37,292 INFO L168 Benchmark]: Boogie Preprocessor took 18.98 ms. Allocated memory is still 107.0 MB. Free memory was 84.9 MB in the beginning and 83.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 14:54:37,293 INFO L168 Benchmark]: RCFGBuilder took 226.96 ms. Allocated memory is still 107.0 MB. Free memory was 83.6 MB in the beginning and 75.7 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 14:54:37,294 INFO L168 Benchmark]: BuchiAutomizer took 1311.31 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 75.7 MB in the beginning and 80.9 MB in the end (delta: -5.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-12-01 14:54:37,294 INFO L168 Benchmark]: Witness Printer took 3.82 ms. Allocated memory is still 130.0 MB. Free memory was 80.9 MB in the beginning and 80.3 MB in the end (delta: 619.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 14:54:37,298 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 107.0 MB. Free memory was 66.1 MB in the beginning and 66.0 MB in the end (delta: 45.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 276.14 ms. Allocated memory is still 107.0 MB. Free memory was 79.0 MB in the beginning and 86.0 MB in the end (delta: -7.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.44 ms. Allocated memory is still 107.0 MB. Free memory was 86.0 MB in the beginning and 84.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.98 ms. Allocated memory is still 107.0 MB. Free memory was 84.9 MB in the beginning and 83.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 226.96 ms. Allocated memory is still 107.0 MB. Free memory was 83.6 MB in the beginning and 75.7 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 1311.31 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 75.7 MB in the beginning and 80.9 MB in the end (delta: -5.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Witness Printer took 3.82 ms. Allocated memory is still 130.0 MB. Free memory was 80.9 MB in the beginning and 80.3 MB in the end (delta: 619.2 kB). 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 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * x + 79 and consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.2s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 4 SDtfs, 5 SDslu, 6 SDs, 0 SdLazy, 7 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax192 hnf100 lsp40 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 41ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...