./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/Benghazi_nondet-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e7f94680-7823-40b6-b7dd-81b58295a6b1/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e7f94680-7823-40b6-b7dd-81b58295a6b1/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e7f94680-7823-40b6-b7dd-81b58295a6b1/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e7f94680-7823-40b6-b7dd-81b58295a6b1/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/Benghazi_nondet-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e7f94680-7823-40b6-b7dd-81b58295a6b1/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e7f94680-7823-40b6-b7dd-81b58295a6b1/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 1be465c325e488658b014d302be974cdfc478282 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:57:00,086 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:57:00,088 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:57:00,149 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:57:00,149 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:57:00,156 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:57:00,162 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:57:00,166 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:57:00,169 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:57:00,175 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:57:00,176 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:57:00,178 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:57:00,179 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:57:00,182 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:57:00,184 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:57:00,186 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:57:00,187 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:57:00,192 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:57:00,195 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:57:00,203 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:57:00,205 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:57:00,207 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:57:00,209 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:57:00,210 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:57:00,219 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:57:00,220 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:57:00,220 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:57:00,221 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:57:00,222 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:57:00,224 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:57:00,224 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:57:00,225 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:57:00,227 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:57:00,228 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:57:00,229 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:57:00,230 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:57:00,231 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:57:00,231 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:57:00,232 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:57:00,233 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:57:00,234 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:57:00,235 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e7f94680-7823-40b6-b7dd-81b58295a6b1/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-28 02:57:00,271 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:57:00,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:57:00,273 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:57:00,274 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:57:00,274 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:57:00,274 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-28 02:57:00,274 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-28 02:57:00,275 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-28 02:57:00,275 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-28 02:57:00,275 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-28 02:57:00,276 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-28 02:57:00,277 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:57:00,277 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 02:57:00,277 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:57:00,277 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:57:00,277 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-28 02:57:00,278 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-28 02:57:00,278 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-28 02:57:00,278 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:57:00,278 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-28 02:57:00,279 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:57:00,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-28 02:57:00,279 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:57:00,279 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:57:00,279 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-28 02:57:00,280 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:57:00,280 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:57:00,280 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:57:00,280 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-28 02:57:00,283 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-28 02:57:00,283 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_e7f94680-7823-40b6-b7dd-81b58295a6b1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e7f94680-7823-40b6-b7dd-81b58295a6b1/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1be465c325e488658b014d302be974cdfc478282 [2020-11-28 02:57:00,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:57:00,663 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:57:00,668 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:57:00,670 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:57:00,671 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:57:00,672 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e7f94680-7823-40b6-b7dd-81b58295a6b1/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/Benghazi_nondet-2.c [2020-11-28 02:57:00,769 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e7f94680-7823-40b6-b7dd-81b58295a6b1/bin/uautomizer/data/aff78d8bd/3bd096b32cd44729a1e811b4df15eeaf/FLAG38d191290 [2020-11-28 02:57:01,313 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:57:01,314 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e7f94680-7823-40b6-b7dd-81b58295a6b1/sv-benchmarks/c/termination-crafted/Benghazi_nondet-2.c [2020-11-28 02:57:01,325 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e7f94680-7823-40b6-b7dd-81b58295a6b1/bin/uautomizer/data/aff78d8bd/3bd096b32cd44729a1e811b4df15eeaf/FLAG38d191290 [2020-11-28 02:57:01,688 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e7f94680-7823-40b6-b7dd-81b58295a6b1/bin/uautomizer/data/aff78d8bd/3bd096b32cd44729a1e811b4df15eeaf [2020-11-28 02:57:01,696 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:57:01,699 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:57:01,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:57:01,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:57:01,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:57:01,709 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:01" (1/1) ... [2020-11-28 02:57:01,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f0aa8fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:01, skipping insertion in model container [2020-11-28 02:57:01,711 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:01" (1/1) ... [2020-11-28 02:57:01,719 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:57:01,733 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:57:01,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:57:01,940 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:57:01,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:57:01,984 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:57:01,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:01 WrapperNode [2020-11-28 02:57:01,985 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:57:01,986 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:57:01,986 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:57:01,986 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:57:01,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:01" (1/1) ... [2020-11-28 02:57:02,004 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:01" (1/1) ... [2020-11-28 02:57:02,023 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:57:02,025 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:57:02,026 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:57:02,026 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:57:02,035 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:01" (1/1) ... [2020-11-28 02:57:02,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:01" (1/1) ... [2020-11-28 02:57:02,037 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:01" (1/1) ... [2020-11-28 02:57:02,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:01" (1/1) ... [2020-11-28 02:57:02,040 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:01" (1/1) ... [2020-11-28 02:57:02,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:01" (1/1) ... [2020-11-28 02:57:02,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:01" (1/1) ... [2020-11-28 02:57:02,054 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:57:02,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:57:02,056 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:57:02,056 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:57:02,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7f94680-7823-40b6-b7dd-81b58295a6b1/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 [2020-11-28 02:57:02,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:57:02,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:57:02,302 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:57:02,302 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-28 02:57:02,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:02 BoogieIcfgContainer [2020-11-28 02:57:02,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:57:02,306 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-28 02:57:02,306 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-28 02:57:02,310 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-28 02:57:02,311 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:57:02,311 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 02:57:01" (1/3) ... [2020-11-28 02:57:02,313 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6b989309 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:57:02, skipping insertion in model container [2020-11-28 02:57:02,313 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:57:02,313 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:01" (2/3) ... [2020-11-28 02:57:02,314 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6b989309 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:57:02, skipping insertion in model container [2020-11-28 02:57:02,314 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:57:02,314 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:02" (3/3) ... [2020-11-28 02:57:02,316 INFO L373 chiAutomizerObserver]: Analyzing ICFG Benghazi_nondet-2.c [2020-11-28 02:57:02,397 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-28 02:57:02,397 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-28 02:57:02,398 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-28 02:57:02,398 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:57:02,398 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:57:02,398 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-28 02:57:02,398 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:57:02,398 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-28 02:57:02,411 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2020-11-28 02:57:02,430 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 02:57:02,430 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:57:02,430 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:57:02,436 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-28 02:57:02,436 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-28 02:57:02,436 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-28 02:57:02,436 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2020-11-28 02:57:02,438 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 02:57:02,438 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:57:02,439 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:57:02,439 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-28 02:57:02,439 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-28 02:57:02,446 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~d1~0, main_~d2~0, main_~d1old~0;havoc main_~x~0;havoc main_~d1~0;havoc main_~d2~0;havoc main_~d1old~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~d1~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~d2~0 := main_#t~nondet2;havoc main_#t~nondet2; 6#L18true assume !!(-1048575 <= main_~x~0 && main_~x~0 <= 1048575); 8#L19true assume !!(-1048575 <= main_~d1~0 && main_~d1~0 <= 1048575); 11#L20true assume !!(-1048575 <= main_~d2~0 && main_~d2~0 <= 1048575); 10#L21-2true [2020-11-28 02:57:02,446 INFO L796 eck$LassoCheckResult]: Loop: 10#L21-2true assume !!(main_~x~0 >= 0);main_~x~0 := main_~x~0 - main_~d1~0;main_~d1old~0 := main_~d1~0;main_~d1~0 := 1 + main_~d2~0;main_~d2~0 := 1 + main_~d1old~0; 10#L21-2true [2020-11-28 02:57:02,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:02,453 INFO L82 PathProgramCache]: Analyzing trace with hash 959435, now seen corresponding path program 1 times [2020-11-28 02:57:02,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:02,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289733387] [2020-11-28 02:57:02,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:02,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:02,551 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:02,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:02,570 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:02,597 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:57:02,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:02,603 INFO L82 PathProgramCache]: Analyzing trace with hash 56, now seen corresponding path program 1 times [2020-11-28 02:57:02,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:02,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078570906] [2020-11-28 02:57:02,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:02,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:02,629 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:02,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:02,638 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:02,642 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:57:02,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:02,655 INFO L82 PathProgramCache]: Analyzing trace with hash 29742510, now seen corresponding path program 1 times [2020-11-28 02:57:02,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:02,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515130507] [2020-11-28 02:57:02,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:02,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:02,679 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:02,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:02,688 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:02,691 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:57:02,829 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-11-28 02:57:02,878 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 02:57:02,878 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 02:57:02,879 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 02:57:02,879 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 02:57:02,879 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 02:57:02,879 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:02,879 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 02:57:02,880 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 02:57:02,880 INFO L133 ssoRankerPreferences]: Filename of dumped script: Benghazi_nondet-2.c_Iteration1_Loop [2020-11-28 02:57:02,880 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 02:57:02,880 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 02:57:02,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:57:02,914 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:57:02,920 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:57:03,069 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 02:57:03,070 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7f94680-7823-40b6-b7dd-81b58295a6b1/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) [2020-11-28 02:57:03,078 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 02:57:03,079 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 [2020-11-28 02:57:03,090 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 02:57:03,091 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_e7f94680-7823-40b6-b7dd-81b58295a6b1/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) [2020-11-28 02:57:03,136 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 02:57:03,136 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:03,143 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 02:57:03,143 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_e7f94680-7823-40b6-b7dd-81b58295a6b1/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 [2020-11-28 02:57:03,187 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 02:57:03,187 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7f94680-7823-40b6-b7dd-81b58295a6b1/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 [2020-11-28 02:57:03,226 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 02:57:03,226 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 02:57:06,964 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 02:57:06,966 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 02:57:06,966 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 02:57:06,966 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 02:57:06,966 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 02:57:06,966 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 02:57:06,966 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:06,966 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 02:57:06,967 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 02:57:06,967 INFO L133 ssoRankerPreferences]: Filename of dumped script: Benghazi_nondet-2.c_Iteration1_Loop [2020-11-28 02:57:06,967 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 02:57:06,967 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 02:57:06,969 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:57:07,056 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:57:07,065 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:57:07,191 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 02:57:07,195 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7f94680-7823-40b6-b7dd-81b58295a6b1/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) [2020-11-28 02:57:07,204 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 [2020-11-28 02:57:07,207 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:57:07,207 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:57:07,208 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:57:07,208 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:57:07,208 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:57:07,214 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:57:07,214 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 [2020-11-28 02:57:07,220 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7f94680-7823-40b6-b7dd-81b58295a6b1/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) [2020-11-28 02:57:07,263 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 [2020-11-28 02:57:07,265 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:57:07,266 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:57:07,266 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:57:07,266 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:57:07,272 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:57:07,272 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:07,278 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7f94680-7823-40b6-b7dd-81b58295a6b1/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 [2020-11-28 02:57:07,309 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 [2020-11-28 02:57:07,310 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:57:07,311 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:57:07,311 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:57:07,311 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:57:07,314 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:57:07,314 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:57:07,324 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-11-28 02:57:07,359 INFO L489 LassoAnalysis]: Using template '2-nested'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7f94680-7823-40b6-b7dd-81b58295a6b1/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) [2020-11-28 02:57:07,371 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 [2020-11-28 02:57:07,374 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:57:07,374 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:57:07,374 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:57:07,374 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:57:07,375 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2020-11-28 02:57:07,383 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2020-11-28 02:57:07,384 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:07,395 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7f94680-7823-40b6-b7dd-81b58295a6b1/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 [2020-11-28 02:57:07,424 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 [2020-11-28 02:57:07,426 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:57:07,426 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:57:07,426 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:57:07,426 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2020-11-28 02:57:07,431 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2020-11-28 02:57:07,431 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2020-11-28 02:57:07,448 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7f94680-7823-40b6-b7dd-81b58295a6b1/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 [2020-11-28 02:57:07,478 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 [2020-11-28 02:57:07,479 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:57:07,479 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:57:07,480 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:57:07,480 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2020-11-28 02:57:07,484 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2020-11-28 02:57:07,485 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2020-11-28 02:57:07,492 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-11-28 02:57:07,516 INFO L489 LassoAnalysis]: Using template '3-nested'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7f94680-7823-40b6-b7dd-81b58295a6b1/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) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:07,518 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 [2020-11-28 02:57:07,523 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:57:07,524 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:57:07,524 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:57:07,524 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:57:07,524 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2020-11-28 02:57:07,529 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-11-28 02:57:07,529 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:57:07,544 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 02:57:07,585 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-11-28 02:57:07,586 INFO L444 ModelExtractionUtils]: 8 out of 16 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7f94680-7823-40b6-b7dd-81b58295a6b1/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) [2020-11-28 02:57:07,595 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 02:57:07,596 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 02:57:07,596 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 02:57:07,597 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function 3-nested ranking function: f0 = -1*ULTIMATE.start_main_~d1~0 - 1*ULTIMATE.start_main_~d2~0 f1 = 2*ULTIMATE.start_main_~x~0 - 1*ULTIMATE.start_main_~d1~0 + 1 f2 = 1*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:07,632 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 02:57:07,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:07,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:07,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 02:57:07,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:07,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:07,717 WARN L261 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 02:57:07,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:07,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:07,734 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-28 02:57:07,735 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states. Second operand 2 states. [2020-11-28 02:57:07,780 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states.. Second operand 2 states. Result 21 states and 26 transitions. Complement of second has 5 states. [2020-11-28 02:57:07,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 02:57:07,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-28 02:57:07,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2020-11-28 02:57:07,785 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 4 letters. Loop has 1 letters. [2020-11-28 02:57:07,786 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:57:07,786 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 5 letters. Loop has 1 letters. [2020-11-28 02:57:07,786 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:57:07,786 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 4 letters. Loop has 2 letters. [2020-11-28 02:57:07,786 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:57:07,787 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 26 transitions. [2020-11-28 02:57:07,790 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 02:57:07,793 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 0 states and 0 transitions. [2020-11-28 02:57:07,794 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-28 02:57:07,794 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-28 02:57:07,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-28 02:57:07,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 02:57:07,795 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:57:07,795 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:57:07,795 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:57:07,795 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-28 02:57:07,795 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:57:07,796 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 02:57:07,796 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-28 02:57:07,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 02:57:07 BoogieIcfgContainer [2020-11-28 02:57:07,803 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-28 02:57:07,804 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:57:07,805 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:57:07,805 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:57:07,806 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:02" (3/4) ... [2020-11-28 02:57:07,809 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 02:57:07,809 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:57:07,812 INFO L168 Benchmark]: Toolchain (without parser) took 6111.84 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 54.2 MB in the beginning and 46.7 MB in the end (delta: 7.4 MB). Peak memory consumption was 26.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:07,813 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 88.1 MB. Free memory was 61.7 MB in the beginning and 61.6 MB in the end (delta: 28.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:07,815 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.08 ms. Allocated memory is still 88.1 MB. Free memory was 53.9 MB in the beginning and 66.6 MB in the end (delta: -12.6 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:07,816 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.80 ms. Allocated memory is still 88.1 MB. Free memory was 66.6 MB in the beginning and 65.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:07,816 INFO L168 Benchmark]: Boogie Preprocessor took 29.09 ms. Allocated memory is still 88.1 MB. Free memory was 65.2 MB in the beginning and 64.4 MB in the end (delta: 730.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:07,818 INFO L168 Benchmark]: RCFGBuilder took 249.41 ms. Allocated memory is still 88.1 MB. Free memory was 64.2 MB in the beginning and 55.7 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:07,825 INFO L168 Benchmark]: BuchiAutomizer took 5497.53 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 55.5 MB in the beginning and 46.7 MB in the end (delta: 8.7 MB). Peak memory consumption was 29.2 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:07,826 INFO L168 Benchmark]: Witness Printer took 5.61 ms. Allocated memory is still 107.0 MB. Free memory is still 46.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:07,833 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 88.1 MB. Free memory was 61.7 MB in the beginning and 61.6 MB in the end (delta: 28.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 282.08 ms. Allocated memory is still 88.1 MB. Free memory was 53.9 MB in the beginning and 66.6 MB in the end (delta: -12.6 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.80 ms. Allocated memory is still 88.1 MB. Free memory was 66.6 MB in the beginning and 65.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.09 ms. Allocated memory is still 88.1 MB. Free memory was 65.2 MB in the beginning and 64.4 MB in the end (delta: 730.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 249.41 ms. Allocated memory is still 88.1 MB. Free memory was 64.2 MB in the beginning and 55.7 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 5497.53 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 55.5 MB in the beginning and 46.7 MB in the end (delta: 8.7 MB). Peak memory consumption was 29.2 MB. Max. memory is 16.1 GB. * Witness Printer took 5.61 ms. Allocated memory is still 107.0 MB. Free memory is still 46.7 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 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has 3-nested ranking function (if -1 * d1 + -1 * d2 > 0 then 2 else (if 2 * x + -1 * d1 + 1 > 0 then 1 else 0)), (if -1 * d1 + -1 * d2 > 0 then -1 * d1 + -1 * d2 else (if 2 * x + -1 * d1 + 1 > 0 then 2 * x + -1 * d1 + 1 else x + 1)) and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.4s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 5.1s. 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: 12 SDtfs, 12 SDslu, 3 SDs, 0 SdLazy, 3 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital25 mio100 ax148 hnf94 lsp65 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq195 hnf91 smp100 dnf100 smp100 tf104 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 26ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 3 MotzkinApplications: 9 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 3.8s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...