./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_e15def4a-df6d-4f14-8b13-4c135caea9bd/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e15def4a-df6d-4f14-8b13-4c135caea9bd/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e15def4a-df6d-4f14-8b13-4c135caea9bd/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e15def4a-df6d-4f14-8b13-4c135caea9bd/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/Benghazi_nondet-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e15def4a-df6d-4f14-8b13-4c135caea9bd/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e15def4a-df6d-4f14-8b13-4c135caea9bd/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 [2020-11-29 20:33:25,517 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:33:25,520 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:33:25,591 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:33:25,591 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:33:25,593 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:33:25,595 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:33:25,598 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:33:25,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:33:25,615 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:33:25,616 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:33:25,617 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:33:25,618 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:33:25,627 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:33:25,628 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:33:25,630 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:33:25,633 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:33:25,635 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:33:25,637 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:33:25,642 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:33:25,649 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:33:25,650 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:33:25,653 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:33:25,654 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:33:25,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:33:25,662 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:33:25,663 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:33:25,665 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:33:25,666 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:33:25,668 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:33:25,669 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:33:25,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:33:25,673 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:33:25,674 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:33:25,675 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:33:25,676 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:33:25,676 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:33:25,677 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:33:25,677 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:33:25,679 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:33:25,680 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:33:25,683 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e15def4a-df6d-4f14-8b13-4c135caea9bd/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-29 20:33:25,733 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:33:25,733 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:33:25,735 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:33:25,735 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:33:25,735 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:33:25,735 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 20:33:25,736 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 20:33:25,736 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 20:33:25,736 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 20:33:25,736 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 20:33:25,737 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 20:33:25,737 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:33:25,737 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 20:33:25,737 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:33:25,738 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:33:25,738 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 20:33:25,738 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 20:33:25,738 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 20:33:25,738 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:33:25,739 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 20:33:25,739 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:33:25,739 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 20:33:25,739 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:33:25,740 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:33:25,740 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 20:33:25,740 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:33:25,741 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:33:25,741 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:33:25,741 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 20:33:25,742 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 20:33:25,742 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_e15def4a-df6d-4f14-8b13-4c135caea9bd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e15def4a-df6d-4f14-8b13-4c135caea9bd/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1be465c325e488658b014d302be974cdfc478282 [2020-11-29 20:33:26,014 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:33:26,043 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:33:26,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:33:26,052 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:33:26,053 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:33:26,054 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e15def4a-df6d-4f14-8b13-4c135caea9bd/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/Benghazi_nondet-2.c [2020-11-29 20:33:26,135 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e15def4a-df6d-4f14-8b13-4c135caea9bd/bin/uautomizer/data/639312414/e4695e970f1246fe8d47f966192bb637/FLAG53601be3e [2020-11-29 20:33:26,588 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:33:26,589 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e15def4a-df6d-4f14-8b13-4c135caea9bd/sv-benchmarks/c/termination-crafted/Benghazi_nondet-2.c [2020-11-29 20:33:26,599 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e15def4a-df6d-4f14-8b13-4c135caea9bd/bin/uautomizer/data/639312414/e4695e970f1246fe8d47f966192bb637/FLAG53601be3e [2020-11-29 20:33:26,971 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e15def4a-df6d-4f14-8b13-4c135caea9bd/bin/uautomizer/data/639312414/e4695e970f1246fe8d47f966192bb637 [2020-11-29 20:33:26,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:33:26,975 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:33:26,977 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:33:26,977 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:33:26,980 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:33:26,981 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:33:26" (1/1) ... [2020-11-29 20:33:26,983 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@750927f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:33:26, skipping insertion in model container [2020-11-29 20:33:26,983 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:33:26" (1/1) ... [2020-11-29 20:33:26,990 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:33:27,003 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:33:27,130 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:33:27,135 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:33:27,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:33:27,179 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:33:27,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:33:27 WrapperNode [2020-11-29 20:33:27,181 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:33:27,182 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:33:27,182 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:33:27,182 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:33:27,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:33:27" (1/1) ... [2020-11-29 20:33:27,195 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:33:27" (1/1) ... [2020-11-29 20:33:27,211 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:33:27,212 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:33:27,213 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:33:27,213 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:33:27,221 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:33:27" (1/1) ... [2020-11-29 20:33:27,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:33:27" (1/1) ... [2020-11-29 20:33:27,222 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:33:27" (1/1) ... [2020-11-29 20:33:27,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:33:27" (1/1) ... [2020-11-29 20:33:27,224 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:33:27" (1/1) ... [2020-11-29 20:33:27,228 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:33:27" (1/1) ... [2020-11-29 20:33:27,229 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:33:27" (1/1) ... [2020-11-29 20:33:27,230 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:33:27,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:33:27,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:33:27,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:33:27,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:33:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e15def4a-df6d-4f14-8b13-4c135caea9bd/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:33:27,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:33:27,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:33:27,462 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:33:27,462 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-29 20:33:27,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:33:27 BoogieIcfgContainer [2020-11-29 20:33:27,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:33:27,466 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 20:33:27,466 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 20:33:27,470 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 20:33:27,471 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 20:33:27,471 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 08:33:26" (1/3) ... [2020-11-29 20:33:27,473 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5b07c1f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 08:33:27, skipping insertion in model container [2020-11-29 20:33:27,473 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 20:33:27,473 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:33:27" (2/3) ... [2020-11-29 20:33:27,473 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5b07c1f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 08:33:27, skipping insertion in model container [2020-11-29 20:33:27,474 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 20:33:27,474 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:33:27" (3/3) ... [2020-11-29 20:33:27,475 INFO L373 chiAutomizerObserver]: Analyzing ICFG Benghazi_nondet-2.c [2020-11-29 20:33:27,551 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 20:33:27,551 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 20:33:27,552 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 20:33:27,552 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:33:27,552 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:33:27,552 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 20:33:27,552 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:33:27,552 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 20:33:27,563 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2020-11-29 20:33:27,577 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-29 20:33:27,578 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:33:27,578 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:33:27,582 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-29 20:33:27,582 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-29 20:33:27,582 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 20:33:27,583 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2020-11-29 20:33:27,583 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-29 20:33:27,584 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:33:27,584 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:33:27,584 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-29 20:33:27,584 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-29 20:33:27,590 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 [2020-11-29 20:33:27,590 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 [2020-11-29 20:33:27,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:33:27,596 INFO L82 PathProgramCache]: Analyzing trace with hash 959435, now seen corresponding path program 1 times [2020-11-29 20:33:27,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:33:27,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986738095] [2020-11-29 20:33:27,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:33:27,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:33:27,671 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:33:27,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:33:27,679 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:33:27,695 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:33:27,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:33:27,697 INFO L82 PathProgramCache]: Analyzing trace with hash 56, now seen corresponding path program 1 times [2020-11-29 20:33:27,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:33:27,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087810826] [2020-11-29 20:33:27,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:33:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:33:27,710 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:33:27,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:33:27,716 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:33:27,717 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:33:27,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:33:27,720 INFO L82 PathProgramCache]: Analyzing trace with hash 29742510, now seen corresponding path program 1 times [2020-11-29 20:33:27,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:33:27,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091189779] [2020-11-29 20:33:27,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:33:27,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:33:27,733 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:33:27,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:33:27,743 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:33:27,746 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:33:27,956 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-11-29 20:33:28,006 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:33:28,007 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:33:28,007 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:33:28,007 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:33:28,007 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 20:33:28,007 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:33:28,008 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:33:28,008 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:33:28,008 INFO L133 ssoRankerPreferences]: Filename of dumped script: Benghazi_nondet-2.c_Iteration1_Loop [2020-11-29 20:33:28,008 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:33:28,008 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:33:28,034 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:33:28,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:33:28,051 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:33:28,212 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:33:28,213 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e15def4a-df6d-4f14-8b13-4c135caea9bd/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:33:28,224 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:33:28,225 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:33:28,236 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 20:33:28,236 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_e15def4a-df6d-4f14-8b13-4c135caea9bd/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) [2020-11-29 20:33:28,284 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:33:28,284 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 [2020-11-29 20:33:28,290 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 20:33:28,291 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_e15def4a-df6d-4f14-8b13-4c135caea9bd/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) [2020-11-29 20:33:28,331 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:33:28,331 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e15def4a-df6d-4f14-8b13-4c135caea9bd/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:33:28,383 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 20:33:28,384 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:33:31,838 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 20:33:31,840 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:33:31,840 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:33:31,840 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:33:31,841 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:33:31,841 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 20:33:31,841 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:33:31,841 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:33:31,842 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:33:31,842 INFO L133 ssoRankerPreferences]: Filename of dumped script: Benghazi_nondet-2.c_Iteration1_Loop [2020-11-29 20:33:31,842 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:33:31,842 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:33:31,844 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:33:31,911 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:33:31,916 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:33:32,010 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:33:32,015 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e15def4a-df6d-4f14-8b13-4c135caea9bd/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:33:32,023 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:33:32,026 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:33:32,026 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:33:32,026 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:33:32,027 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:33:32,027 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:33:32,033 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:33:32,033 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:33:32,041 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e15def4a-df6d-4f14-8b13-4c135caea9bd/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:33:32,085 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:33:32,086 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:33:32,087 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:33:32,087 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:33:32,087 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:33:32,093 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:33:32,094 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 [2020-11-29 20:33:32,103 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e15def4a-df6d-4f14-8b13-4c135caea9bd/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:33:32,148 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:33:32,151 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:33:32,151 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:33:32,151 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:33:32,151 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:33:32,157 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:33:32,157 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:33:32,163 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-11-29 20:33:32,198 INFO L489 LassoAnalysis]: Using template '2-nested'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e15def4a-df6d-4f14-8b13-4c135caea9bd/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:33:32,209 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:33:32,211 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:33:32,211 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:33:32,212 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:33:32,212 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:33:32,213 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2020-11-29 20:33:32,220 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2020-11-29 20:33:32,220 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 20:33:32,227 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e15def4a-df6d-4f14-8b13-4c135caea9bd/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:33:32,267 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:33:32,269 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:33:32,269 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:33:32,270 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:33:32,270 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2020-11-29 20:33:32,278 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2020-11-29 20:33:32,278 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:33:32,287 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e15def4a-df6d-4f14-8b13-4c135caea9bd/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:33:32,321 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:33:32,322 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:33:32,323 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:33:32,323 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:33:32,323 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2020-11-29 20:33:32,326 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2020-11-29 20:33:32,327 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2020-11-29 20:33:32,335 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-11-29 20:33:32,370 INFO L489 LassoAnalysis]: Using template '3-nested'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e15def4a-df6d-4f14-8b13-4c135caea9bd/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 [2020-11-29 20:33:32,379 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:33:32,382 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:33:32,382 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:33:32,383 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:33:32,383 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:33:32,383 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2020-11-29 20:33:32,388 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-11-29 20:33:32,388 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 20:33:32,395 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 20:33:32,405 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-11-29 20:33:32,405 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_e15def4a-df6d-4f14-8b13-4c135caea9bd/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:33:32,412 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 20:33:32,412 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 20:33:32,412 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 20:33:32,413 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 [2020-11-29 20:33:32,451 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 20:33:32,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:33:32,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:33:32,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:33:32,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:33:32,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:33:32,544 WARN L261 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 20:33:32,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:33:32,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:33:32,569 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 [2020-11-29 20:33:32,570 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states. Second operand 2 states. [2020-11-29 20:33:32,678 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. [2020-11-29 20:33:32,680 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 [2020-11-29 20:33:32,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-29 20:33:32,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2020-11-29 20:33:32,686 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 4 letters. Loop has 1 letters. [2020-11-29 20:33:32,687 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:33:32,688 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 5 letters. Loop has 1 letters. [2020-11-29 20:33:32,688 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:33:32,689 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 4 letters. Loop has 2 letters. [2020-11-29 20:33:32,689 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:33:32,690 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 26 transitions. [2020-11-29 20:33:32,698 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 20:33:32,701 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 0 states and 0 transitions. [2020-11-29 20:33:32,702 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 20:33:32,702 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 20:33:32,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 20:33:32,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 20:33:32,703 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 20:33:32,703 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 20:33:32,703 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 20:33:32,704 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 20:33:32,708 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 20:33:32,708 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 20:33:32,708 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 20:33:32,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 08:33:32 BoogieIcfgContainer [2020-11-29 20:33:32,714 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 20:33:32,715 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:33:32,716 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:33:32,716 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:33:32,716 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:33:27" (3/4) ... [2020-11-29 20:33:32,719 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 20:33:32,720 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:33:32,722 INFO L168 Benchmark]: Toolchain (without parser) took 5745.11 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 83.5 MB in the beginning and 103.9 MB in the end (delta: -20.4 MB). Peak memory consumption was 1.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:33:32,723 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 109.1 MB. Free memory is still 68.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:33:32,724 INFO L168 Benchmark]: CACSL2BoogieTranslator took 204.68 ms. Allocated memory is still 109.1 MB. Free memory was 83.3 MB in the beginning and 86.6 MB in the end (delta: -3.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:33:32,726 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.67 ms. Allocated memory is still 109.1 MB. Free memory was 86.6 MB in the beginning and 85.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:33:32,726 INFO L168 Benchmark]: Boogie Preprocessor took 17.87 ms. Allocated memory is still 109.1 MB. Free memory was 85.1 MB in the beginning and 84.3 MB in the end (delta: 870.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:33:32,727 INFO L168 Benchmark]: RCFGBuilder took 234.02 ms. Allocated memory is still 109.1 MB. Free memory was 84.3 MB in the beginning and 75.6 MB in the end (delta: 8.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:33:32,733 INFO L168 Benchmark]: BuchiAutomizer took 5248.59 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 75.6 MB in the beginning and 104.3 MB in the end (delta: -28.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:33:32,733 INFO L168 Benchmark]: Witness Printer took 4.69 ms. Allocated memory is still 132.1 MB. Free memory was 104.3 MB in the beginning and 103.9 MB in the end (delta: 307.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:33:32,739 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 109.1 MB. Free memory is still 68.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 204.68 ms. Allocated memory is still 109.1 MB. Free memory was 83.3 MB in the beginning and 86.6 MB in the end (delta: -3.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 29.67 ms. Allocated memory is still 109.1 MB. Free memory was 86.6 MB in the beginning and 85.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.87 ms. Allocated memory is still 109.1 MB. Free memory was 85.1 MB in the beginning and 84.3 MB in the end (delta: 870.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 234.02 ms. Allocated memory is still 109.1 MB. Free memory was 84.3 MB in the beginning and 75.6 MB in the end (delta: 8.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 5248.59 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 75.6 MB in the beginning and 104.3 MB in the end (delta: -28.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.69 ms. Allocated memory is still 132.1 MB. Free memory was 104.3 MB in the beginning and 103.9 MB in the end (delta: 307.4 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 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 5.1s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 4.8s. 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: 23ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 3 MotzkinApplications: 9 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 3.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...