./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-invgen/seq-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e71f31e6-d2fe-42e3-ae12-98b8581ed5f4/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e71f31e6-d2fe-42e3-ae12-98b8581ed5f4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e71f31e6-d2fe-42e3-ae12-98b8581ed5f4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e71f31e6-d2fe-42e3-ae12-98b8581ed5f4/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-invgen/seq-3.i -s /tmp/vcloud-vcloud-master/worker/run_dir_e71f31e6-d2fe-42e3-ae12-98b8581ed5f4/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e71f31e6-d2fe-42e3-ae12-98b8581ed5f4/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a6fcc511e5e199bb4964a3b49fd7a49c7f36043d ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:29:01,122 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:29:01,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:29:01,201 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:29:01,201 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:29:01,214 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:29:01,218 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:29:01,228 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:29:01,232 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:29:01,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:29:01,241 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:29:01,244 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:29:01,245 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:29:01,250 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:29:01,252 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:29:01,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:29:01,257 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:29:01,262 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:29:01,267 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:29:01,276 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:29:01,280 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:29:01,282 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:29:01,285 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:29:01,286 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:29:01,293 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:29:01,294 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:29:01,294 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:29:01,297 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:29:01,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:29:01,300 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:29:01,300 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:29:01,302 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:29:01,305 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:29:01,306 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:29:01,308 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:29:01,308 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:29:01,309 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:29:01,310 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:29:01,310 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:29:01,312 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:29:01,313 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:29:01,314 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e71f31e6-d2fe-42e3-ae12-98b8581ed5f4/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-30 01:29:01,368 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:29:01,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:29:01,371 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:29:01,371 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:29:01,371 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:29:01,372 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-30 01:29:01,372 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-30 01:29:01,372 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-30 01:29:01,373 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-30 01:29:01,373 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-30 01:29:01,374 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-30 01:29:01,375 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:29:01,375 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:29:01,375 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 01:29:01,376 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:29:01,376 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:29:01,376 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:29:01,376 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-30 01:29:01,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-30 01:29:01,377 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-30 01:29:01,377 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:29:01,378 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:29:01,378 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-30 01:29:01,378 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:29:01,379 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-30 01:29:01,379 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:29:01,379 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:29:01,380 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-30 01:29:01,380 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:29:01,382 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 01:29:01,382 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:29:01,383 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-30 01:29:01,384 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-30 01:29:01,384 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_e71f31e6-d2fe-42e3-ae12-98b8581ed5f4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e71f31e6-d2fe-42e3-ae12-98b8581ed5f4/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6fcc511e5e199bb4964a3b49fd7a49c7f36043d [2020-11-30 01:29:01,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:29:01,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:29:01,739 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:29:01,749 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:29:01,750 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:29:01,751 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e71f31e6-d2fe-42e3-ae12-98b8581ed5f4/bin/uautomizer/../../sv-benchmarks/c/loop-invgen/seq-3.i [2020-11-30 01:29:01,848 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e71f31e6-d2fe-42e3-ae12-98b8581ed5f4/bin/uautomizer/data/db6158643/de8f64ff353b489ab27e31a7a3be6aba/FLAG39dce7ae0 [2020-11-30 01:29:02,445 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:29:02,446 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e71f31e6-d2fe-42e3-ae12-98b8581ed5f4/sv-benchmarks/c/loop-invgen/seq-3.i [2020-11-30 01:29:02,454 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e71f31e6-d2fe-42e3-ae12-98b8581ed5f4/bin/uautomizer/data/db6158643/de8f64ff353b489ab27e31a7a3be6aba/FLAG39dce7ae0 [2020-11-30 01:29:02,825 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e71f31e6-d2fe-42e3-ae12-98b8581ed5f4/bin/uautomizer/data/db6158643/de8f64ff353b489ab27e31a7a3be6aba [2020-11-30 01:29:02,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:29:02,830 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:29:02,837 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:29:02,838 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:29:02,842 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:29:02,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:29:02" (1/1) ... [2020-11-30 01:29:02,847 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b08b88a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:29:02, skipping insertion in model container [2020-11-30 01:29:02,847 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:29:02" (1/1) ... [2020-11-30 01:29:02,856 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:29:02,880 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:29:03,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:29:03,126 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:29:03,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:29:03,189 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:29:03,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:29:03 WrapperNode [2020-11-30 01:29:03,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:29:03,197 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:29:03,197 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:29:03,198 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:29:03,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:29:03" (1/1) ... [2020-11-30 01:29:03,218 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:29:03" (1/1) ... [2020-11-30 01:29:03,248 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:29:03,250 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:29:03,250 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:29:03,250 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:29:03,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:29:03" (1/1) ... [2020-11-30 01:29:03,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:29:03" (1/1) ... [2020-11-30 01:29:03,274 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:29:03" (1/1) ... [2020-11-30 01:29:03,274 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:29:03" (1/1) ... [2020-11-30 01:29:03,278 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:29:03" (1/1) ... [2020-11-30 01:29:03,283 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:29:03" (1/1) ... [2020-11-30 01:29:03,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:29:03" (1/1) ... [2020-11-30 01:29:03,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:29:03,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:29:03,299 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:29:03,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:29:03,300 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:29:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e71f31e6-d2fe-42e3-ae12-98b8581ed5f4/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 [2020-11-30 01:29:03,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:29:03,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:29:03,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:29:03,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:29:03,760 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:29:03,761 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-11-30 01:29:03,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:29:03 BoogieIcfgContainer [2020-11-30 01:29:03,763 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:29:03,765 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-30 01:29:03,765 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-30 01:29:03,769 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-30 01:29:03,786 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:29:03,786 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 30.11 01:29:02" (1/3) ... [2020-11-30 01:29:03,788 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@71f7cdd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 01:29:03, skipping insertion in model container [2020-11-30 01:29:03,788 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:29:03,788 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:29:03" (2/3) ... [2020-11-30 01:29:03,789 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@71f7cdd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 01:29:03, skipping insertion in model container [2020-11-30 01:29:03,789 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:29:03,789 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:29:03" (3/3) ... [2020-11-30 01:29:03,791 INFO L373 chiAutomizerObserver]: Analyzing ICFG seq-3.i [2020-11-30 01:29:03,895 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-30 01:29:03,895 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-30 01:29:03,895 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-30 01:29:03,895 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:29:03,895 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:29:03,895 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-30 01:29:03,896 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:29:03,896 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-30 01:29:03,919 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2020-11-30 01:29:03,951 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 8 [2020-11-30 01:29:03,952 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:29:03,952 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:29:03,959 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-30 01:29:03,959 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-30 01:29:03,959 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-30 01:29:03,960 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2020-11-30 01:29:03,964 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 8 [2020-11-30 01:29:03,964 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:29:03,964 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:29:03,965 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-30 01:29:03,966 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-30 01:29:03,976 INFO L794 eck$LassoCheckResult]: Stem: 13#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 10#L-1true havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~post5, main_#t~post6, main_#t~post7, main_#t~post8, main_#t~post9, main_#t~post10, main_~n0~0, main_~n1~0, main_~i0~0, main_~k~0, main_~i1~0, main_~j1~0;havoc main_~n0~0;havoc main_~n1~0;main_~i0~0 := 0;main_~k~0 := 0;main_~n0~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~n1~0 := main_#t~nondet4;havoc main_#t~nondet4; 8#L30true assume !!(-1000000 <= main_~n0~0 && main_~n0~0 < 1000000); 11#L31true assume !!(-1000000 <= main_~n1~0 && main_~n1~0 < 1000000); 9#L32-2true [2020-11-30 01:29:03,977 INFO L796 eck$LassoCheckResult]: Loop: 9#L32-2true assume !!(main_~i0~0 < main_~n0~0);main_#t~post5 := main_~i0~0;main_~i0~0 := 1 + main_#t~post5;havoc main_#t~post5;main_#t~post6 := main_~k~0;main_~k~0 := 1 + main_#t~post6;havoc main_#t~post6; 9#L32-2true [2020-11-30 01:29:03,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:29:03,993 INFO L82 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 1 times [2020-11-30 01:29:04,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:29:04,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373043739] [2020-11-30 01:29:04,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:29:04,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:29:04,159 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:29:04,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:29:04,200 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:29:04,229 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:29:04,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:29:04,235 INFO L82 PathProgramCache]: Analyzing trace with hash 52, now seen corresponding path program 1 times [2020-11-30 01:29:04,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:29:04,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640870408] [2020-11-30 01:29:04,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:29:04,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:29:04,258 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:29:04,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:29:04,270 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:29:04,275 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:29:04,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:29:04,280 INFO L82 PathProgramCache]: Analyzing trace with hash 28695853, now seen corresponding path program 1 times [2020-11-30 01:29:04,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:29:04,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390788208] [2020-11-30 01:29:04,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:29:04,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:29:04,328 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:29:04,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:29:04,351 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:29:04,364 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:29:04,554 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-11-30 01:29:04,571 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:29:04,572 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:29:04,572 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:29:04,572 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:29:04,573 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 01:29:04,573 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:29:04,574 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:29:04,574 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:29:04,574 INFO L133 ssoRankerPreferences]: Filename of dumped script: seq-3.i_Iteration1_Loop [2020-11-30 01:29:04,574 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:29:04,575 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:29:04,599 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:29:04,608 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:29:04,615 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:29:04,635 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:29:04,733 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:29:04,735 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e71f31e6-d2fe-42e3-ae12-98b8581ed5f4/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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:29:04,742 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:29:04,743 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 01:29:04,753 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:29:04,754 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6=0} Honda state: {ULTIMATE.start_main_#t~post6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e71f31e6-d2fe-42e3-ae12-98b8581ed5f4/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:29:04,802 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:29:04,802 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 01:29:04,806 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:29:04,806 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5=0} Honda state: {ULTIMATE.start_main_#t~post5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e71f31e6-d2fe-42e3-ae12-98b8581ed5f4/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 [2020-11-30 01:29:04,836 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:29:04,836 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e71f31e6-d2fe-42e3-ae12-98b8581ed5f4/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 [2020-11-30 01:29:04,887 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 01:29:04,887 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 01:29:05,074 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 01:29:05,078 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:29:05,078 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:29:05,079 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:29:05,079 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:29:05,079 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 01:29:05,079 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:29:05,079 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:29:05,080 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:29:05,080 INFO L133 ssoRankerPreferences]: Filename of dumped script: seq-3.i_Iteration1_Loop [2020-11-30 01:29:05,080 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:29:05,080 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:29:05,082 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:29:05,102 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:29:05,116 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:29:05,123 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:29:05,266 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:29:05,274 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e71f31e6-d2fe-42e3-ae12-98b8581ed5f4/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) [2020-11-30 01:29:05,282 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 [2020-11-30 01:29:05,284 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:29:05,284 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:29:05,285 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:29:05,285 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:29:05,286 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:29:05,288 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:29:05,289 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 [2020-11-30 01:29:05,293 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e71f31e6-d2fe-42e3-ae12-98b8581ed5f4/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) [2020-11-30 01:29:05,348 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 Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:29:05,350 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:29:05,350 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:29:05,351 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:29:05,351 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:29:05,351 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:29:05,353 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:29:05,353 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:29:05,356 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 01:29:05,365 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 01:29:05,366 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e71f31e6-d2fe-42e3-ae12-98b8581ed5f4/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) [2020-11-30 01:29:05,373 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 01:29:05,373 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 01:29:05,374 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 01:29:05,374 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i0~0, ULTIMATE.start_main_~n0~0) = -1*ULTIMATE.start_main_~i0~0 + 1*ULTIMATE.start_main_~n0~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:29:05,405 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 01:29:05,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:29:05,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:29:05,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:29:05,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:29:05,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:29:05,519 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:29:05,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:29:05,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:29:05,543 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 [2020-11-30 01:29:05,544 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states. Second operand 2 states. [2020-11-30 01:29:05,640 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states.. Second operand 2 states. Result 43 states and 61 transitions. Complement of second has 5 states. [2020-11-30 01:29:05,642 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 [2020-11-30 01:29:05,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-30 01:29:05,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 44 transitions. [2020-11-30 01:29:05,647 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 44 transitions. Stem has 4 letters. Loop has 1 letters. [2020-11-30 01:29:05,648 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:29:05,648 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 44 transitions. Stem has 5 letters. Loop has 1 letters. [2020-11-30 01:29:05,648 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:29:05,649 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 44 transitions. Stem has 4 letters. Loop has 2 letters. [2020-11-30 01:29:05,650 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:29:05,651 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 61 transitions. [2020-11-30 01:29:05,657 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-11-30 01:29:05,662 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 12 states and 15 transitions. [2020-11-30 01:29:05,663 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-11-30 01:29:05,664 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-11-30 01:29:05,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 15 transitions. [2020-11-30 01:29:05,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 01:29:05,665 INFO L691 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2020-11-30 01:29:05,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 15 transitions. [2020-11-30 01:29:05,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-11-30 01:29:05,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-30 01:29:05,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2020-11-30 01:29:05,690 INFO L714 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2020-11-30 01:29:05,691 INFO L594 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2020-11-30 01:29:05,691 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-30 01:29:05,691 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 15 transitions. [2020-11-30 01:29:05,692 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-11-30 01:29:05,692 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:29:05,692 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:29:05,692 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-30 01:29:05,693 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-30 01:29:05,693 INFO L794 eck$LassoCheckResult]: Stem: 104#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 98#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~post5, main_#t~post6, main_#t~post7, main_#t~post8, main_#t~post9, main_#t~post10, main_~n0~0, main_~n1~0, main_~i0~0, main_~k~0, main_~i1~0, main_~j1~0;havoc main_~n0~0;havoc main_~n1~0;main_~i0~0 := 0;main_~k~0 := 0;main_~n0~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~n1~0 := main_#t~nondet4;havoc main_#t~nondet4; 99#L30 assume !!(-1000000 <= main_~n0~0 && main_~n0~0 < 1000000); 100#L31 assume !!(-1000000 <= main_~n1~0 && main_~n1~0 < 1000000); 101#L32-2 assume !(main_~i0~0 < main_~n0~0); 107#L32-3 main_~i1~0 := 0; 108#L37-2 [2020-11-30 01:29:05,693 INFO L796 eck$LassoCheckResult]: Loop: 108#L37-2 assume !!(main_~i1~0 < main_~n1~0);main_#t~post7 := main_~i1~0;main_~i1~0 := 1 + main_#t~post7;havoc main_#t~post7;main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 108#L37-2 [2020-11-30 01:29:05,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:29:05,696 INFO L82 PathProgramCache]: Analyzing trace with hash 889571406, now seen corresponding path program 1 times [2020-11-30 01:29:05,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:29:05,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393912019] [2020-11-30 01:29:05,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:29:05,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:29:05,732 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:29:05,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:29:05,761 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:29:05,771 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:29:05,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:29:05,772 INFO L82 PathProgramCache]: Analyzing trace with hash 65, now seen corresponding path program 1 times [2020-11-30 01:29:05,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:29:05,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651163833] [2020-11-30 01:29:05,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:29:05,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:29:05,777 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:29:05,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:29:05,781 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:29:05,788 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:29:05,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:29:05,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1806909844, now seen corresponding path program 1 times [2020-11-30 01:29:05,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:29:05,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621893093] [2020-11-30 01:29:05,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:29:05,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:29:05,818 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:29:05,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:29:05,848 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:29:05,853 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:29:05,886 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:29:05,886 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:29:05,886 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:29:05,886 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:29:05,886 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 01:29:05,886 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:29:05,887 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:29:05,887 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:29:05,887 INFO L133 ssoRankerPreferences]: Filename of dumped script: seq-3.i_Iteration2_Loop [2020-11-30 01:29:05,887 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:29:05,887 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:29:05,889 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:29:05,907 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:29:05,911 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:29:05,915 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:29:06,000 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:29:06,000 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e71f31e6-d2fe-42e3-ae12-98b8581ed5f4/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) [2020-11-30 01:29:06,006 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:29:06,006 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e71f31e6-d2fe-42e3-ae12-98b8581ed5f4/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 [2020-11-30 01:29:06,039 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 01:29:06,039 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 01:29:06,238 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 01:29:06,240 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:29:06,240 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:29:06,240 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:29:06,240 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:29:06,240 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 01:29:06,240 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:29:06,241 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:29:06,241 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:29:06,241 INFO L133 ssoRankerPreferences]: Filename of dumped script: seq-3.i_Iteration2_Loop [2020-11-30 01:29:06,241 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:29:06,241 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:29:06,242 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:29:06,254 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:29:06,259 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:29:06,264 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:29:06,325 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:29:06,325 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e71f31e6-d2fe-42e3-ae12-98b8581ed5f4/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 [2020-11-30 01:29:06,331 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 [2020-11-30 01:29:06,332 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:29:06,333 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:29:06,333 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:29:06,333 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:29:06,333 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:29:06,334 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:29:06,335 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:29:06,338 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 01:29:06,342 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 01:29:06,343 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e71f31e6-d2fe-42e3-ae12-98b8581ed5f4/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 [2020-11-30 01:29:06,345 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 01:29:06,346 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 01:29:06,346 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 01:29:06,346 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n1~0, ULTIMATE.start_main_~i1~0) = 1*ULTIMATE.start_main_~n1~0 - 1*ULTIMATE.start_main_~i1~0 Supporting invariants [] [2020-11-30 01:29:06,377 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 01:29:06,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:29:06,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:29:06,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:29:06,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:29:06,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:29:06,436 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:29:06,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:29:06,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:29:06,437 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 [2020-11-30 01:29:06,438 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 6 Second operand 2 states. [2020-11-30 01:29:06,459 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 6. Second operand 2 states. Result 17 states and 23 transitions. Complement of second has 4 states. [2020-11-30 01:29:06,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-30 01:29:06,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-30 01:29:06,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 13 transitions. [2020-11-30 01:29:06,462 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 6 letters. Loop has 1 letters. [2020-11-30 01:29:06,462 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:29:06,462 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 7 letters. Loop has 1 letters. [2020-11-30 01:29:06,463 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:29:06,463 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 6 letters. Loop has 2 letters. [2020-11-30 01:29:06,463 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:29:06,463 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 23 transitions. [2020-11-30 01:29:06,465 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 01:29:06,465 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 13 states and 17 transitions. [2020-11-30 01:29:06,465 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-11-30 01:29:06,466 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-11-30 01:29:06,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 17 transitions. [2020-11-30 01:29:06,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 01:29:06,476 INFO L691 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2020-11-30 01:29:06,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 17 transitions. [2020-11-30 01:29:06,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-11-30 01:29:06,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-30 01:29:06,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2020-11-30 01:29:06,492 INFO L714 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2020-11-30 01:29:06,492 INFO L594 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2020-11-30 01:29:06,492 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-30 01:29:06,492 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 17 transitions. [2020-11-30 01:29:06,493 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 01:29:06,493 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:29:06,493 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:29:06,494 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:29:06,494 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 01:29:06,494 INFO L794 eck$LassoCheckResult]: Stem: 173#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 167#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~post5, main_#t~post6, main_#t~post7, main_#t~post8, main_#t~post9, main_#t~post10, main_~n0~0, main_~n1~0, main_~i0~0, main_~k~0, main_~i1~0, main_~j1~0;havoc main_~n0~0;havoc main_~n1~0;main_~i0~0 := 0;main_~k~0 := 0;main_~n0~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~n1~0 := main_#t~nondet4;havoc main_#t~nondet4; 168#L30 assume !!(-1000000 <= main_~n0~0 && main_~n0~0 < 1000000); 169#L31 assume !!(-1000000 <= main_~n1~0 && main_~n1~0 < 1000000); 170#L32-2 assume !(main_~i0~0 < main_~n0~0); 176#L32-3 main_~i1~0 := 0; 177#L37-2 assume !(main_~i1~0 < main_~n1~0); 175#L37-3 main_~j1~0 := 0; 172#L42-2 [2020-11-30 01:29:06,494 INFO L796 eck$LassoCheckResult]: Loop: 172#L42-2 assume !!(main_~j1~0 < main_~n0~0 + main_~n1~0);__VERIFIER_assert_#in~cond := (if main_~k~0 > 0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 174#L18 assume !(0 == __VERIFIER_assert_~cond); 171#L18-2 main_#t~post9 := main_~j1~0;main_~j1~0 := 1 + main_#t~post9;havoc main_#t~post9;main_#t~post10 := main_~k~0;main_~k~0 := main_#t~post10 - 1;havoc main_#t~post10; 172#L42-2 [2020-11-30 01:29:06,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:29:06,495 INFO L82 PathProgramCache]: Analyzing trace with hash 179630292, now seen corresponding path program 1 times [2020-11-30 01:29:06,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:29:06,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778003148] [2020-11-30 01:29:06,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:29:06,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:29:06,546 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:29:06,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:29:06,567 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:29:06,571 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:29:06,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:29:06,571 INFO L82 PathProgramCache]: Analyzing trace with hash 76913, now seen corresponding path program 1 times [2020-11-30 01:29:06,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:29:06,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618863674] [2020-11-30 01:29:06,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:29:06,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:29:06,586 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:29:06,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:29:06,609 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:29:06,611 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:29:06,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:29:06,612 INFO L82 PathProgramCache]: Analyzing trace with hash -163174722, now seen corresponding path program 1 times [2020-11-30 01:29:06,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:29:06,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376127549] [2020-11-30 01:29:06,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:29:06,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:29:06,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:29:06,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376127549] [2020-11-30 01:29:06,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:29:06,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-30 01:29:06,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695600049] [2020-11-30 01:29:06,865 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:29:06,865 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:29:06,865 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:29:06,865 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:29:06,865 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 01:29:06,865 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:29:06,865 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:29:06,866 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:29:06,866 INFO L133 ssoRankerPreferences]: Filename of dumped script: seq-3.i_Iteration3_Loop [2020-11-30 01:29:06,866 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:29:06,866 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:29:06,868 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:29:06,876 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:29:06,884 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:29:06,893 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:29:06,897 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:29:06,988 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:29:06,988 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e71f31e6-d2fe-42e3-ae12-98b8581ed5f4/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) [2020-11-30 01:29:07,001 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:29:07,001 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:29:07,007 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:29:07,007 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Honda state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e71f31e6-d2fe-42e3-ae12-98b8581ed5f4/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:29:07,057 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:29:07,057 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e71f31e6-d2fe-42e3-ae12-98b8581ed5f4/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:29:07,112 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 01:29:07,112 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:29:07,162 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 01:29:07,165 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:29:07,165 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:29:07,165 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:29:07,166 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:29:07,166 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 01:29:07,166 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:29:07,166 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:29:07,166 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:29:07,166 INFO L133 ssoRankerPreferences]: Filename of dumped script: seq-3.i_Iteration3_Loop [2020-11-30 01:29:07,166 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:29:07,166 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:29:07,168 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:29:07,179 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:29:07,188 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:29:07,205 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:29:07,209 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:29:07,304 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:29:07,305 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e71f31e6-d2fe-42e3-ae12-98b8581ed5f4/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:29:07,316 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 [2020-11-30 01:29:07,319 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:29:07,319 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:29:07,319 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:29:07,319 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:29:07,319 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:29:07,322 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:29:07,323 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:29:07,326 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 01:29:07,330 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-30 01:29:07,330 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e71f31e6-d2fe-42e3-ae12-98b8581ed5f4/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:29:07,334 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 01:29:07,334 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 01:29:07,334 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 01:29:07,334 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0) = 1*ULTIMATE.start_main_~k~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:29:07,377 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 01:29:07,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:29:07,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:29:07,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:29:07,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:29:07,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:29:07,437 WARN L261 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 01:29:07,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:29:07,503 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 01:29:07,503 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:29:07,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:29:07,530 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-30 01:29:07,531 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 17 transitions. cyclomatic complexity: 7 Second operand 4 states. [2020-11-30 01:29:07,590 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 17 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 16 states and 21 transitions. Complement of second has 6 states. [2020-11-30 01:29:07,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-30 01:29:07,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-30 01:29:07,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2020-11-30 01:29:07,591 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 8 letters. Loop has 3 letters. [2020-11-30 01:29:07,591 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:29:07,591 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 11 letters. Loop has 3 letters. [2020-11-30 01:29:07,592 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:29:07,592 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 8 letters. Loop has 6 letters. [2020-11-30 01:29:07,592 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:29:07,592 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 21 transitions. [2020-11-30 01:29:07,593 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 01:29:07,594 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 0 states and 0 transitions. [2020-11-30 01:29:07,594 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-30 01:29:07,594 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-30 01:29:07,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-30 01:29:07,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 01:29:07,594 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:29:07,594 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:29:07,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:29:07,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 01:29:07,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:29:07,600 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 7 states. [2020-11-30 01:29:07,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:29:07,606 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-11-30 01:29:07,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 01:29:07,606 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-11-30 01:29:07,606 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 01:29:07,606 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 01:29:07,606 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-30 01:29:07,607 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-30 01:29:07,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-30 01:29:07,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 01:29:07,607 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:29:07,607 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:29:07,607 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:29:07,608 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-30 01:29:07,608 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-30 01:29:07,608 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 01:29:07,608 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-30 01:29:07,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 30.11 01:29:07 BoogieIcfgContainer [2020-11-30 01:29:07,615 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-30 01:29:07,616 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:29:07,616 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:29:07,616 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:29:07,616 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:29:03" (3/4) ... [2020-11-30 01:29:07,620 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 01:29:07,620 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:29:07,623 INFO L168 Benchmark]: Toolchain (without parser) took 4790.64 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 55.0 MB in the beginning and 56.0 MB in the end (delta: -977.3 kB). Peak memory consumption was 17.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:29:07,625 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 86.0 MB. Free memory was 61.0 MB in the beginning and 61.0 MB in the end (delta: 28.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:29:07,632 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.52 ms. Allocated memory is still 86.0 MB. Free memory was 54.9 MB in the beginning and 64.5 MB in the end (delta: -9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:29:07,633 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.67 ms. Allocated memory is still 86.0 MB. Free memory was 64.5 MB in the beginning and 63.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:29:07,633 INFO L168 Benchmark]: Boogie Preprocessor took 47.21 ms. Allocated memory is still 86.0 MB. Free memory was 63.2 MB in the beginning and 62.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:29:07,634 INFO L168 Benchmark]: RCFGBuilder took 465.19 ms. Allocated memory is still 86.0 MB. Free memory was 62.0 MB in the beginning and 49.6 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:29:07,635 INFO L168 Benchmark]: BuchiAutomizer took 3850.25 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 49.2 MB in the beginning and 56.5 MB in the end (delta: -7.3 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2020-11-30 01:29:07,639 INFO L168 Benchmark]: Witness Printer took 4.49 ms. Allocated memory is still 104.9 MB. Free memory was 56.5 MB in the beginning and 56.0 MB in the end (delta: 509.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:29:07,647 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 86.0 MB. Free memory was 61.0 MB in the beginning and 61.0 MB in the end (delta: 28.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 357.52 ms. Allocated memory is still 86.0 MB. Free memory was 54.9 MB in the beginning and 64.5 MB in the end (delta: -9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.67 ms. Allocated memory is still 86.0 MB. Free memory was 64.5 MB in the beginning and 63.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 47.21 ms. Allocated memory is still 86.0 MB. Free memory was 63.2 MB in the beginning and 62.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 465.19 ms. Allocated memory is still 86.0 MB. Free memory was 62.0 MB in the beginning and 49.6 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 3850.25 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 49.2 MB in the beginning and 56.5 MB in the end (delta: -7.3 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. * Witness Printer took 4.49 ms. Allocated memory is still 104.9 MB. Free memory was 56.5 MB in the beginning and 56.0 MB in the end (delta: 509.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * i0 + n0 and consists of 4 locations. One deterministic module has affine ranking function n1 + -1 * i1 and consists of 3 locations. One deterministic module has affine ranking function k and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.7s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 3.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 13 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 38 SDtfs, 41 SDslu, 13 SDs, 0 SdLazy, 18 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax100 hnf100 lsp59 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq156 hnf93 smp100 dnf100 smp100 tf112 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 18ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...