./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/RecursiveMultiplication-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6ffd0cfd-ebcc-472a-af33-602c6d90d565/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6ffd0cfd-ebcc-472a-af33-602c6d90d565/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6ffd0cfd-ebcc-472a-af33-602c6d90d565/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6ffd0cfd-ebcc-472a-af33-602c6d90d565/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/RecursiveMultiplication-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6ffd0cfd-ebcc-472a-af33-602c6d90d565/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6ffd0cfd-ebcc-472a-af33-602c6d90d565/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3df7720ba3b76dcfdecddff77e2f89a40d99e447 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 21:31:13,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 21:31:13,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 21:31:13,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 21:31:13,487 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 21:31:13,493 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 21:31:13,497 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 21:31:13,502 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 21:31:13,504 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 21:31:13,512 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 21:31:13,513 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 21:31:13,515 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 21:31:13,516 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 21:31:13,519 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 21:31:13,521 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 21:31:13,522 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 21:31:13,524 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 21:31:13,525 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 21:31:13,532 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 21:31:13,538 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 21:31:13,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 21:31:13,542 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 21:31:13,544 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 21:31:13,545 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 21:31:13,551 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 21:31:13,552 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 21:31:13,552 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 21:31:13,554 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 21:31:13,555 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 21:31:13,556 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 21:31:13,556 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 21:31:13,557 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 21:31:13,559 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 21:31:13,560 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 21:31:13,561 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 21:31:13,562 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 21:31:13,562 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 21:31:13,563 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 21:31:13,563 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 21:31:13,564 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 21:31:13,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 21:31:13,567 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6ffd0cfd-ebcc-472a-af33-602c6d90d565/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-29 21:31:13,597 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 21:31:13,597 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 21:31:13,598 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 21:31:13,599 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 21:31:13,599 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 21:31:13,599 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 21:31:13,599 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 21:31:13,600 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 21:31:13,600 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 21:31:13,600 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 21:31:13,600 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 21:31:13,600 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 21:31:13,601 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 21:31:13,601 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 21:31:13,601 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 21:31:13,601 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 21:31:13,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 21:31:13,602 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 21:31:13,602 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 21:31:13,602 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 21:31:13,602 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 21:31:13,603 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 21:31:13,603 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 21:31:13,603 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 21:31:13,603 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 21:31:13,604 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 21:31:13,604 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 21:31:13,604 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 21:31:13,604 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 21:31:13,605 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 21:31:13,605 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_6ffd0cfd-ebcc-472a-af33-602c6d90d565/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6ffd0cfd-ebcc-472a-af33-602c6d90d565/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3df7720ba3b76dcfdecddff77e2f89a40d99e447 [2020-11-29 21:31:13,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 21:31:13,896 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 21:31:13,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 21:31:13,903 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 21:31:13,904 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 21:31:13,905 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6ffd0cfd-ebcc-472a-af33-602c6d90d565/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/RecursiveMultiplication-1.c [2020-11-29 21:31:13,997 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6ffd0cfd-ebcc-472a-af33-602c6d90d565/bin/uautomizer/data/fd873e267/ed1fd7215c1f4583affc57ae767cb141/FLAG8750ab229 [2020-11-29 21:31:14,437 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 21:31:14,438 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6ffd0cfd-ebcc-472a-af33-602c6d90d565/sv-benchmarks/c/termination-crafted/RecursiveMultiplication-1.c [2020-11-29 21:31:14,448 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6ffd0cfd-ebcc-472a-af33-602c6d90d565/bin/uautomizer/data/fd873e267/ed1fd7215c1f4583affc57ae767cb141/FLAG8750ab229 [2020-11-29 21:31:14,817 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6ffd0cfd-ebcc-472a-af33-602c6d90d565/bin/uautomizer/data/fd873e267/ed1fd7215c1f4583affc57ae767cb141 [2020-11-29 21:31:14,820 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 21:31:14,821 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 21:31:14,822 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 21:31:14,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 21:31:14,826 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 21:31:14,827 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:31:14" (1/1) ... [2020-11-29 21:31:14,829 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71d6c11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:31:14, skipping insertion in model container [2020-11-29 21:31:14,829 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:31:14" (1/1) ... [2020-11-29 21:31:14,836 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 21:31:14,848 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 21:31:15,000 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:31:15,004 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 21:31:15,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:31:15,051 INFO L208 MainTranslator]: Completed translation [2020-11-29 21:31:15,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:31:15 WrapperNode [2020-11-29 21:31:15,053 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 21:31:15,055 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 21:31:15,055 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 21:31:15,055 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 21:31:15,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:31:15" (1/1) ... [2020-11-29 21:31:15,071 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:31:15" (1/1) ... [2020-11-29 21:31:15,091 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 21:31:15,093 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 21:31:15,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 21:31:15,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 21:31:15,099 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:31:15" (1/1) ... [2020-11-29 21:31:15,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:31:15" (1/1) ... [2020-11-29 21:31:15,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:31:15" (1/1) ... [2020-11-29 21:31:15,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:31:15" (1/1) ... [2020-11-29 21:31:15,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:31:15" (1/1) ... [2020-11-29 21:31:15,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:31:15" (1/1) ... [2020-11-29 21:31:15,105 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:31:15" (1/1) ... [2020-11-29 21:31:15,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 21:31:15,107 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 21:31:15,107 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 21:31:15,107 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 21:31:15,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:31:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6ffd0cfd-ebcc-472a-af33-602c6d90d565/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:31:15,168 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2020-11-29 21:31:15,169 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2020-11-29 21:31:15,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 21:31:15,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 21:31:15,358 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 21:31:15,359 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-29 21:31:15,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:31:15 BoogieIcfgContainer [2020-11-29 21:31:15,360 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 21:31:15,361 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 21:31:15,363 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 21:31:15,367 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 21:31:15,368 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 21:31:15,369 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 09:31:14" (1/3) ... [2020-11-29 21:31:15,370 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@14444719 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 09:31:15, skipping insertion in model container [2020-11-29 21:31:15,370 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 21:31:15,370 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:31:15" (2/3) ... [2020-11-29 21:31:15,372 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@14444719 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 09:31:15, skipping insertion in model container [2020-11-29 21:31:15,372 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 21:31:15,372 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:31:15" (3/3) ... [2020-11-29 21:31:15,373 INFO L373 chiAutomizerObserver]: Analyzing ICFG RecursiveMultiplication-1.c [2020-11-29 21:31:15,416 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 21:31:15,416 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 21:31:15,417 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 21:31:15,417 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 21:31:15,417 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 21:31:15,417 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 21:31:15,417 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 21:31:15,417 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 21:31:15,431 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2020-11-29 21:31:15,451 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-29 21:31:15,452 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:31:15,452 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:31:15,459 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-29 21:31:15,459 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 21:31:15,459 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 21:31:15,460 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2020-11-29 21:31:15,462 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-29 21:31:15,462 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:31:15,462 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:31:15,463 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-29 21:31:15,463 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 21:31:15,470 INFO L794 eck$LassoCheckResult]: Stem: 13#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_~m~0, main_~n~0, main_~res~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 3#L26true assume !!(-65535 <= main_~m~0 && main_~m~0 <= 65535); 6#L27true assume !!(-65535 <= main_~n~0 && main_~n~0 <= 65535); 8#L28true call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 4#multENTRYtrue [2020-11-29 21:31:15,471 INFO L796 eck$LassoCheckResult]: Loop: 4#multENTRYtrue ~n := #in~n;~m := #in~m; 11#L13true assume ~m < 0; 9#L14true call #t~ret0 := mult(~n, -~m);< 4#multENTRYtrue [2020-11-29 21:31:15,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:31:15,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1390416, now seen corresponding path program 1 times [2020-11-29 21:31:15,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:31:15,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413202277] [2020-11-29 21:31:15,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:31:15,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:31:15,568 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:31:15,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:31:15,587 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:31:15,606 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:31:15,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:31:15,612 INFO L82 PathProgramCache]: Analyzing trace with hash 29915, now seen corresponding path program 1 times [2020-11-29 21:31:15,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:31:15,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521908414] [2020-11-29 21:31:15,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:31:15,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:31:15,639 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:31:15,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:31:15,649 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:31:15,653 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:31:15,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:31:15,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1527789780, now seen corresponding path program 1 times [2020-11-29 21:31:15,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:31:15,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171148256] [2020-11-29 21:31:15,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:31:15,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:31:15,679 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:31:15,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:31:15,698 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:31:15,703 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:31:15,940 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:31:15,940 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:31:15,941 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:31:15,941 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:31:15,941 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 21:31:15,941 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:31:15,941 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:31:15,941 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:31:15,941 INFO L133 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication-1.c_Iteration1_Loop [2020-11-29 21:31:15,942 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:31:15,942 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:31:15,960 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:31:15,968 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:31:15,972 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:31:15,975 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:31:15,981 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:31:15,986 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:31:15,991 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:31:16,106 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:31:16,106 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6ffd0cfd-ebcc-472a-af33-602c6d90d565/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 [2020-11-29 21:31:16,118 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:31:16,118 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 21:31:16,125 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:31:16,125 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret1=0} Honda state: {mult_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6ffd0cfd-ebcc-472a-af33-602c6d90d565/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:31:16,158 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:31:16,159 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 21:31:16,163 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:31:16,163 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~n=0} Honda state: {mult_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6ffd0cfd-ebcc-472a-af33-602c6d90d565/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:31:16,198 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:31:16,198 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 21:31:16,203 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:31:16,203 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#res=0} Honda state: {mult_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6ffd0cfd-ebcc-472a-af33-602c6d90d565/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 [2020-11-29 21:31:16,231 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:31:16,232 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 21:31:16,235 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:31:16,235 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~m=0} Honda state: {mult_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6ffd0cfd-ebcc-472a-af33-602c6d90d565/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:31:16,263 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:31:16,263 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 21:31:16,272 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:31:16,273 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret0=0} Honda state: {mult_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6ffd0cfd-ebcc-472a-af33-602c6d90d565/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:31:16,320 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:31:16,320 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:31:16,326 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:31:16,326 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#in~n=0} Honda state: {mult_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6ffd0cfd-ebcc-472a-af33-602c6d90d565/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:31:16,372 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:31:16,372 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6ffd0cfd-ebcc-472a-af33-602c6d90d565/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:31:16,431 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 21:31:16,431 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:31:16,551 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 21:31:16,553 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:31:16,554 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:31:16,554 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:31:16,554 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:31:16,554 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 21:31:16,554 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:31:16,554 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:31:16,554 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:31:16,555 INFO L133 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication-1.c_Iteration1_Loop [2020-11-29 21:31:16,555 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:31:16,555 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:31:16,556 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:31:16,564 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:31:16,574 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:31:16,580 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:31:16,585 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:31:16,589 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:31:16,600 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:31:16,698 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:31:16,705 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6ffd0cfd-ebcc-472a-af33-602c6d90d565/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:31:16,711 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:31:16,714 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:31:16,714 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:31:16,715 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:31:16,715 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:31:16,715 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:31:16,718 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:31:16,718 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:31:16,723 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6ffd0cfd-ebcc-472a-af33-602c6d90d565/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:31:16,783 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:31:16,785 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:31:16,785 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:31:16,785 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:31:16,785 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:31:16,785 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:31:16,786 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:31:16,787 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:31:16,790 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6ffd0cfd-ebcc-472a-af33-602c6d90d565/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:31:16,840 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:31:16,843 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:31:16,843 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:31:16,843 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:31:16,844 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:31:16,844 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:31:16,845 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:31:16,845 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:31:16,848 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6ffd0cfd-ebcc-472a-af33-602c6d90d565/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) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:31:16,886 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:31:16,888 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:31:16,888 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:31:16,889 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:31:16,889 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:31:16,889 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:31:16,890 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:31:16,890 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:31:16,894 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6ffd0cfd-ebcc-472a-af33-602c6d90d565/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) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:31:16,942 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:31:16,944 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:31:16,944 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:31:16,944 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:31:16,944 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:31:16,944 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:31:16,946 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:31:16,946 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:31:16,951 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6ffd0cfd-ebcc-472a-af33-602c6d90d565/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:31:16,983 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:31:16,985 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:31:16,985 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:31:16,988 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:31:16,988 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:31:16,989 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:31:16,990 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:31:16,990 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:31:16,998 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6ffd0cfd-ebcc-472a-af33-602c6d90d565/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:31:17,047 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:31:17,050 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:31:17,050 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:31:17,050 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:31:17,050 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:31:17,051 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:31:17,056 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:31:17,057 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:31:17,062 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 21:31:17,068 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-29 21:31:17,068 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_6ffd0cfd-ebcc-472a-af33-602c6d90d565/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) [2020-11-29 21:31:17,102 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 21:31:17,103 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 21:31:17,103 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 21:31:17,104 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = -1*mult_#in~m Supporting invariants [] Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:31:17,141 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 21:31:17,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:31:17,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:31:17,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 21:31:17,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:31:17,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:31:17,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 21:31:17,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:31:17,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:31:17,471 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 [2020-11-29 21:31:17,473 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states. Second operand 4 states. [2020-11-29 21:31:17,645 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states.. Second operand 4 states. Result 46 states and 59 transitions. Complement of second has 12 states. [2020-11-29 21:31:17,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 21:31:17,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 21:31:17,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2020-11-29 21:31:17,653 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 3 letters. [2020-11-29 21:31:17,655 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:31:17,656 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 3 letters. [2020-11-29 21:31:17,656 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:31:17,656 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 6 letters. [2020-11-29 21:31:17,657 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:31:17,658 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 59 transitions. [2020-11-29 21:31:17,665 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-29 21:31:17,672 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 21 states and 24 transitions. [2020-11-29 21:31:17,673 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2020-11-29 21:31:17,674 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2020-11-29 21:31:17,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 24 transitions. [2020-11-29 21:31:17,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 21:31:17,675 INFO L691 BuchiCegarLoop]: Abstraction has 21 states and 24 transitions. [2020-11-29 21:31:17,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 24 transitions. [2020-11-29 21:31:17,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 14. [2020-11-29 21:31:17,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-29 21:31:17,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2020-11-29 21:31:17,710 INFO L714 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2020-11-29 21:31:17,710 INFO L594 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2020-11-29 21:31:17,710 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 21:31:17,710 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 17 transitions. [2020-11-29 21:31:17,712 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-29 21:31:17,712 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:31:17,713 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:31:17,713 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 21:31:17,713 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-29 21:31:17,714 INFO L794 eck$LassoCheckResult]: Stem: 130#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_~m~0, main_~n~0, main_~res~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 125#L26 assume !!(-65535 <= main_~m~0 && main_~m~0 <= 65535); 126#L27 assume !!(-65535 <= main_~n~0 && main_~n~0 <= 65535); 120#L28 call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 119#multENTRY ~n := #in~n;~m := #in~m; 122#L13 assume !(~m < 0); 127#L16 [2020-11-29 21:31:17,714 INFO L796 eck$LassoCheckResult]: Loop: 127#L16 assume !(0 == ~m); 128#L19 call #t~ret1 := mult(~n, ~m - 1);< 131#multENTRY ~n := #in~n;~m := #in~m; 132#L13 assume !(~m < 0); 127#L16 [2020-11-29 21:31:17,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:31:17,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1336189782, now seen corresponding path program 1 times [2020-11-29 21:31:17,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:31:17,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950871571] [2020-11-29 21:31:17,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:31:17,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:31:17,725 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:31:17,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:31:17,732 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:31:17,734 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:31:17,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:31:17,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1253150, now seen corresponding path program 1 times [2020-11-29 21:31:17,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:31:17,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250015053] [2020-11-29 21:31:17,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:31:17,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:31:17,743 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:31:17,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:31:17,748 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:31:17,750 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:31:17,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:31:17,751 INFO L82 PathProgramCache]: Analyzing trace with hash -614723597, now seen corresponding path program 1 times [2020-11-29 21:31:17,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:31:17,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120134001] [2020-11-29 21:31:17,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:31:17,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:31:17,765 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:31:17,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:31:17,775 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:31:17,778 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:31:17,924 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:31:17,924 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:31:17,924 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:31:17,924 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:31:17,924 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 21:31:17,924 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:31:17,924 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:31:17,924 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:31:17,925 INFO L133 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication-1.c_Iteration2_Loop [2020-11-29 21:31:17,925 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:31:17,925 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:31:17,927 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:31:17,937 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:31:17,942 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:31:17,946 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:31:17,954 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:31:18,081 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:31:18,081 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6ffd0cfd-ebcc-472a-af33-602c6d90d565/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:31:18,091 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:31:18,092 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:31:18,097 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:31:18,097 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret0=0} Honda state: {mult_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6ffd0cfd-ebcc-472a-af33-602c6d90d565/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:31:18,150 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:31:18,150 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:31:18,154 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:31:18,154 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret1=0} Honda state: {mult_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6ffd0cfd-ebcc-472a-af33-602c6d90d565/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:31:18,208 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:31:18,208 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:31:18,212 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:31:18,213 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#res=0} Honda state: {mult_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6ffd0cfd-ebcc-472a-af33-602c6d90d565/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:31:18,274 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:31:18,274 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 21:31:18,301 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:31:18,301 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~n=0, mult_#in~n=0} Honda state: {mult_~n=0, mult_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6ffd0cfd-ebcc-472a-af33-602c6d90d565/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:31:18,355 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:31:18,355 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6ffd0cfd-ebcc-472a-af33-602c6d90d565/bin/uautomizer/z3 Starting monitored process 23 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 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:31:18,394 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 21:31:18,394 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 21:31:24,002 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 21:31:24,004 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:31:24,004 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:31:24,004 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:31:24,005 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:31:24,005 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 21:31:24,005 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:31:24,005 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:31:24,005 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:31:24,005 INFO L133 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication-1.c_Iteration2_Loop [2020-11-29 21:31:24,005 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:31:24,005 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:31:24,007 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:31:24,043 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:31:24,048 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:31:24,052 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:31:24,057 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:31:24,167 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:31:24,167 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6ffd0cfd-ebcc-472a-af33-602c6d90d565/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:31:24,186 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:31:24,188 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:31:24,188 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:31:24,189 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:31:24,189 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:31:24,189 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:31:24,191 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:31:24,191 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:31:24,201 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 21:31:24,209 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 21:31:24,209 INFO L444 ModelExtractionUtils]: 1 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_6ffd0cfd-ebcc-472a-af33-602c6d90d565/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:31:24,217 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 21:31:24,217 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 21:31:24,217 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 21:31:24,218 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_~m) = 1*mult_~m Supporting invariants [] Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:31:24,260 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 21:31:24,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:31:24,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:31:24,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 21:31:24,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:31:24,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:31:24,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 21:31:24,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:31:24,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:31:24,409 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 [2020-11-29 21:31:24,409 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5 Second operand 5 states. [2020-11-29 21:31:24,518 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5. Second operand 5 states. Result 26 states and 31 transitions. Complement of second has 13 states. [2020-11-29 21:31:24,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-11-29 21:31:24,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-29 21:31:24,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2020-11-29 21:31:24,522 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 6 letters. Loop has 4 letters. [2020-11-29 21:31:24,523 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:31:24,523 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 10 letters. Loop has 4 letters. [2020-11-29 21:31:24,523 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:31:24,523 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 6 letters. Loop has 8 letters. [2020-11-29 21:31:24,523 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:31:24,523 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 31 transitions. [2020-11-29 21:31:24,525 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-29 21:31:24,529 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 25 states and 30 transitions. [2020-11-29 21:31:24,530 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2020-11-29 21:31:24,530 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2020-11-29 21:31:24,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 30 transitions. [2020-11-29 21:31:24,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 21:31:24,531 INFO L691 BuchiCegarLoop]: Abstraction has 25 states and 30 transitions. [2020-11-29 21:31:24,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 30 transitions. [2020-11-29 21:31:24,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2020-11-29 21:31:24,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-29 21:31:24,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2020-11-29 21:31:24,540 INFO L714 BuchiCegarLoop]: Abstraction has 22 states and 27 transitions. [2020-11-29 21:31:24,540 INFO L594 BuchiCegarLoop]: Abstraction has 22 states and 27 transitions. [2020-11-29 21:31:24,544 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 21:31:24,545 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 27 transitions. [2020-11-29 21:31:24,546 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-29 21:31:24,549 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:31:24,549 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:31:24,550 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:31:24,552 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 21:31:24,552 INFO L794 eck$LassoCheckResult]: Stem: 234#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_~m~0, main_~n~0, main_~res~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 228#L26 assume !!(-65535 <= main_~m~0 && main_~m~0 <= 65535); 229#L27 assume !!(-65535 <= main_~n~0 && main_~n~0 <= 65535); 235#L28 call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 236#multENTRY ~n := #in~n;~m := #in~m; 241#L13 assume !(~m < 0); 243#L16 assume !(0 == ~m); 223#L19 call #t~ret1 := mult(~n, ~m - 1);< 222#multENTRY ~n := #in~n;~m := #in~m; 224#L13 assume ~m < 0; 232#L14 [2020-11-29 21:31:24,553 INFO L796 eck$LassoCheckResult]: Loop: 232#L14 call #t~ret0 := mult(~n, -~m);< 237#multENTRY ~n := #in~n;~m := #in~m; 242#L13 assume ~m < 0; 232#L14 [2020-11-29 21:31:24,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:31:24,554 INFO L82 PathProgramCache]: Analyzing trace with hash -614723600, now seen corresponding path program 1 times [2020-11-29 21:31:24,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:31:24,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174553048] [2020-11-29 21:31:24,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:31:24,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:31:24,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:31:24,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174553048] [2020-11-29 21:31:24,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:31:24,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 21:31:24,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846197327] [2020-11-29 21:31:24,686 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 21:31:24,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:31:24,686 INFO L82 PathProgramCache]: Analyzing trace with hash 59585, now seen corresponding path program 2 times [2020-11-29 21:31:24,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:31:24,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258495742] [2020-11-29 21:31:24,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:31:24,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:31:24,706 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:31:24,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:31:24,710 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:31:24,711 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:31:24,805 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:31:24,805 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:31:24,805 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:31:24,805 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:31:24,805 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 21:31:24,805 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:31:24,805 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:31:24,806 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:31:24,806 INFO L133 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication-1.c_Iteration3_Loop [2020-11-29 21:31:24,806 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:31:24,806 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:31:24,807 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:31:24,822 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:31:24,827 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:31:24,831 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:31:24,848 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:31:25,013 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:31:25,013 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6ffd0cfd-ebcc-472a-af33-602c6d90d565/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:31:25,017 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:31:25,018 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6ffd0cfd-ebcc-472a-af33-602c6d90d565/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:31:25,073 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 21:31:25,073 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:31:26,544 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 21:31:26,546 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:31:26,547 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:31:26,547 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:31:26,547 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:31:26,547 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 21:31:26,547 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:31:26,547 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:31:26,547 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:31:26,547 INFO L133 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication-1.c_Iteration3_Loop [2020-11-29 21:31:26,547 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:31:26,548 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:31:26,549 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:31:26,568 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:31:26,573 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:31:26,585 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:31:26,590 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:31:26,687 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:31:26,687 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6ffd0cfd-ebcc-472a-af33-602c6d90d565/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:31:26,695 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:31:26,706 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:31:26,707 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:31:26,707 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:31:26,707 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:31:26,707 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:31:26,710 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:31:26,710 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:31:26,719 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:31:26,727 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-29 21:31:26,727 INFO L444 ModelExtractionUtils]: 2 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_6ffd0cfd-ebcc-472a-af33-602c6d90d565/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:31:26,733 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 21:31:26,733 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 21:31:26,733 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 21:31:26,734 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_~m) = 1*mult_~m Supporting invariants [] Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:31:26,763 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 21:31:26,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:31:26,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:31:26,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 21:31:26,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:31:26,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:31:26,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 21:31:26,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:31:26,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:31:26,928 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 [2020-11-29 21:31:26,928 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 27 transitions. cyclomatic complexity: 8 Second operand 4 states. [2020-11-29 21:31:27,013 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 27 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 51 states and 61 transitions. Complement of second has 9 states. [2020-11-29 21:31:27,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 21:31:27,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 21:31:27,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2020-11-29 21:31:27,016 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 3 letters. [2020-11-29 21:31:27,017 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:31:27,017 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 13 letters. Loop has 3 letters. [2020-11-29 21:31:27,017 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:31:27,018 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 6 letters. [2020-11-29 21:31:27,018 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:31:27,018 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 61 transitions. [2020-11-29 21:31:27,022 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-29 21:31:27,024 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 44 states and 54 transitions. [2020-11-29 21:31:27,025 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2020-11-29 21:31:27,025 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2020-11-29 21:31:27,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 54 transitions. [2020-11-29 21:31:27,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 21:31:27,026 INFO L691 BuchiCegarLoop]: Abstraction has 44 states and 54 transitions. [2020-11-29 21:31:27,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 54 transitions. [2020-11-29 21:31:27,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2020-11-29 21:31:27,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-29 21:31:27,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2020-11-29 21:31:27,037 INFO L714 BuchiCegarLoop]: Abstraction has 38 states and 47 transitions. [2020-11-29 21:31:27,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:31:27,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:31:27,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:31:27,044 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand 5 states. [2020-11-29 21:31:27,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:31:27,124 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2020-11-29 21:31:27,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 21:31:27,125 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 35 transitions. [2020-11-29 21:31:27,127 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 21:31:27,127 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 0 states and 0 transitions. [2020-11-29 21:31:27,127 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 21:31:27,127 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 21:31:27,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 21:31:27,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 21:31:27,128 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 21:31:27,128 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 21:31:27,128 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 21:31:27,128 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 21:31:27,128 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 21:31:27,128 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 21:31:27,128 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 21:31:27,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 09:31:27 BoogieIcfgContainer [2020-11-29 21:31:27,137 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 21:31:27,138 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 21:31:27,138 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 21:31:27,139 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 21:31:27,139 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:31:15" (3/4) ... [2020-11-29 21:31:27,144 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 21:31:27,145 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 21:31:27,147 INFO L168 Benchmark]: Toolchain (without parser) took 12324.34 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 59.9 MB in the beginning and 46.6 MB in the end (delta: 13.3 MB). Peak memory consumption was 31.8 MB. Max. memory is 16.1 GB. [2020-11-29 21:31:27,148 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 92.3 MB. Free memory was 67.7 MB in the beginning and 67.6 MB in the end (delta: 30.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:31:27,149 INFO L168 Benchmark]: CACSL2BoogieTranslator took 231.36 ms. Allocated memory is still 92.3 MB. Free memory was 59.7 MB in the beginning and 71.9 MB in the end (delta: -12.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 21:31:27,150 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.34 ms. Allocated memory is still 92.3 MB. Free memory was 71.9 MB in the beginning and 70.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:31:27,151 INFO L168 Benchmark]: Boogie Preprocessor took 13.19 ms. Allocated memory is still 92.3 MB. Free memory was 70.5 MB in the beginning and 69.8 MB in the end (delta: 696.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:31:27,151 INFO L168 Benchmark]: RCFGBuilder took 253.30 ms. Allocated memory is still 92.3 MB. Free memory was 69.3 MB in the beginning and 60.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 21:31:27,152 INFO L168 Benchmark]: BuchiAutomizer took 11775.97 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 60.0 MB in the beginning and 47.6 MB in the end (delta: 12.5 MB). Peak memory consumption was 32.7 MB. Max. memory is 16.1 GB. [2020-11-29 21:31:27,153 INFO L168 Benchmark]: Witness Printer took 6.66 ms. Allocated memory is still 111.1 MB. Free memory is still 46.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:31:27,157 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 92.3 MB. Free memory was 67.7 MB in the beginning and 67.6 MB in the end (delta: 30.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 231.36 ms. Allocated memory is still 92.3 MB. Free memory was 59.7 MB in the beginning and 71.9 MB in the end (delta: -12.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.34 ms. Allocated memory is still 92.3 MB. Free memory was 71.9 MB in the beginning and 70.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 13.19 ms. Allocated memory is still 92.3 MB. Free memory was 70.5 MB in the beginning and 69.8 MB in the end (delta: 696.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 253.30 ms. Allocated memory is still 92.3 MB. Free memory was 69.3 MB in the beginning and 60.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 11775.97 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 60.0 MB in the beginning and 47.6 MB in the end (delta: 12.5 MB). Peak memory consumption was 32.7 MB. Max. memory is 16.1 GB. * Witness Printer took 6.66 ms. Allocated memory is still 111.1 MB. Free memory is still 46.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * \old(m) and consists of 4 locations. One deterministic module has affine ranking function m and consists of 5 locations. One deterministic module has affine ranking function m and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 11.7s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 10.4s. Construction of modules took 0.1s. Büchi inclusion checks took 0.9s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 16 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 22 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 42 SDtfs, 46 SDslu, 13 SDs, 0 SdLazy, 72 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf100 lsp71 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq171 hnf92 smp100 dnf100 smp100 tf110 neg100 sie106 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 16ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 10 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 7.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...