./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-new/half.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_90b37169-02e3-402b-b611-23d482b4ec80/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_90b37169-02e3-402b-b611-23d482b4ec80/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_90b37169-02e3-402b-b611-23d482b4ec80/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_90b37169-02e3-402b-b611-23d482b4ec80/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-new/half.i -s /tmp/vcloud-vcloud-master/worker/run_dir_90b37169-02e3-402b-b611-23d482b4ec80/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_90b37169-02e3-402b-b611-23d482b4ec80/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 41a31ab8e42c0ba8256484457a81b8567cde71c6 .................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:12:26,945 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:12:26,948 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:12:27,007 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:12:27,008 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:12:27,014 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:12:27,019 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:12:27,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:12:27,037 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:12:27,044 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:12:27,045 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:12:27,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:12:27,049 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:12:27,053 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:12:27,055 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:12:27,058 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:12:27,059 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:12:27,061 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:12:27,067 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:12:27,074 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:12:27,076 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:12:27,078 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:12:27,080 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:12:27,081 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:12:27,084 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:12:27,085 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:12:27,086 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:12:27,087 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:12:27,088 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:12:27,089 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:12:27,090 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:12:27,091 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:12:27,092 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:12:27,093 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:12:27,094 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:12:27,095 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:12:27,096 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:12:27,096 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:12:27,096 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:12:27,098 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:12:27,098 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:12:27,099 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_90b37169-02e3-402b-b611-23d482b4ec80/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-30 00:12:27,129 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:12:27,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:12:27,131 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:12:27,131 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:12:27,132 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:12:27,132 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-30 00:12:27,132 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-30 00:12:27,133 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-30 00:12:27,133 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-30 00:12:27,133 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-30 00:12:27,133 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-30 00:12:27,134 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:12:27,134 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:12:27,134 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 00:12:27,134 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:12:27,135 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:12:27,135 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:12:27,135 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-30 00:12:27,136 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-30 00:12:27,136 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-30 00:12:27,136 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:12:27,136 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:12:27,137 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-30 00:12:27,137 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:12:27,137 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-30 00:12:27,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:12:27,138 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:12:27,138 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-30 00:12:27,138 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:12:27,139 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:12:27,139 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:12:27,139 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-30 00:12:27,141 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-30 00:12:27,141 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_90b37169-02e3-402b-b611-23d482b4ec80/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_90b37169-02e3-402b-b611-23d482b4ec80/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41a31ab8e42c0ba8256484457a81b8567cde71c6 [2020-11-30 00:12:27,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:12:27,503 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:12:27,506 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:12:27,507 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:12:27,508 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:12:27,509 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_90b37169-02e3-402b-b611-23d482b4ec80/bin/uautomizer/../../sv-benchmarks/c/loop-new/half.i [2020-11-30 00:12:27,609 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_90b37169-02e3-402b-b611-23d482b4ec80/bin/uautomizer/data/f8551a374/52b58102cacb4a4f924fffe25c4802a0/FLAG8ae5dd93a [2020-11-30 00:12:28,263 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:12:28,264 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_90b37169-02e3-402b-b611-23d482b4ec80/sv-benchmarks/c/loop-new/half.i [2020-11-30 00:12:28,271 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_90b37169-02e3-402b-b611-23d482b4ec80/bin/uautomizer/data/f8551a374/52b58102cacb4a4f924fffe25c4802a0/FLAG8ae5dd93a [2020-11-30 00:12:28,643 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_90b37169-02e3-402b-b611-23d482b4ec80/bin/uautomizer/data/f8551a374/52b58102cacb4a4f924fffe25c4802a0 [2020-11-30 00:12:28,653 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:12:28,655 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:12:28,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:12:28,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:12:28,662 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:12:28,663 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:12:28" (1/1) ... [2020-11-30 00:12:28,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e4da72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:28, skipping insertion in model container [2020-11-30 00:12:28,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:12:28" (1/1) ... [2020-11-30 00:12:28,675 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:12:28,694 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:12:28,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:12:28,913 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:12:28,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:12:28,952 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:12:28,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:28 WrapperNode [2020-11-30 00:12:28,953 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:12:28,955 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:12:28,955 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:12:28,955 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:12:28,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:28" (1/1) ... [2020-11-30 00:12:28,973 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:28" (1/1) ... [2020-11-30 00:12:28,995 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:12:28,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:12:28,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:12:28,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:12:29,006 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:28" (1/1) ... [2020-11-30 00:12:29,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:28" (1/1) ... [2020-11-30 00:12:29,008 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:28" (1/1) ... [2020-11-30 00:12:29,009 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:28" (1/1) ... [2020-11-30 00:12:29,013 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:28" (1/1) ... [2020-11-30 00:12:29,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:28" (1/1) ... [2020-11-30 00:12:29,019 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:28" (1/1) ... [2020-11-30 00:12:29,021 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:12:29,022 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:12:29,022 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:12:29,023 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:12:29,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_90b37169-02e3-402b-b611-23d482b4ec80/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:12:29,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:12:29,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:12:29,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:12:29,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:12:29,364 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:12:29,364 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-30 00:12:29,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:12:29 BoogieIcfgContainer [2020-11-30 00:12:29,366 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:12:29,368 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-30 00:12:29,368 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-30 00:12:29,372 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-30 00:12:29,373 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:12:29,373 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 30.11 12:12:28" (1/3) ... [2020-11-30 00:12:29,374 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@68ab71a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:12:29, skipping insertion in model container [2020-11-30 00:12:29,375 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:12:29,375 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:28" (2/3) ... [2020-11-30 00:12:29,375 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@68ab71a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:12:29, skipping insertion in model container [2020-11-30 00:12:29,376 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:12:29,376 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:12:29" (3/3) ... [2020-11-30 00:12:29,377 INFO L373 chiAutomizerObserver]: Analyzing ICFG half.i [2020-11-30 00:12:29,453 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-30 00:12:29,453 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-30 00:12:29,453 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-30 00:12:29,453 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:12:29,453 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:12:29,453 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-30 00:12:29,454 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:12:29,454 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-30 00:12:29,475 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2020-11-30 00:12:29,497 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 00:12:29,497 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:12:29,497 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:12:29,504 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-30 00:12:29,504 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 00:12:29,505 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-30 00:12:29,505 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2020-11-30 00:12:29,507 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 00:12:29,507 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:12:29,507 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:12:29,508 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-30 00:12:29,508 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 00:12:29,517 INFO L794 eck$LassoCheckResult]: Stem: 12#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 10#L-1true havoc main_#res;havoc main_#t~nondet3, main_#t~post5, main_#t~post4, main_~i~0, main_~n~0, main_~k~0;main_~i~0 := 0;main_~n~0 := 0;main_~k~0 := main_#t~nondet3;havoc main_#t~nondet3; 6#L28true assume !!(main_~k~0 <= 1000000 && main_~k~0 >= -1000000);main_~i~0 := 0; 3#L29-3true [2020-11-30 00:12:29,517 INFO L796 eck$LassoCheckResult]: Loop: 3#L29-3true assume !!(main_~i~0 < 2 * main_~k~0); 9#L30true assume 0 == (if main_~i~0 < 0 && 0 != main_~i~0 % 2 then main_~i~0 % 2 - 2 else main_~i~0 % 2);main_#t~post5 := main_~n~0;main_~n~0 := 1 + main_#t~post5;havoc main_#t~post5; 5#L29-2true main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 3#L29-3true [2020-11-30 00:12:29,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:12:29,524 INFO L82 PathProgramCache]: Analyzing trace with hash 29860, now seen corresponding path program 1 times [2020-11-30 00:12:29,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:12:29,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966650693] [2020-11-30 00:12:29,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:12:29,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:12:29,635 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:12:29,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:12:29,655 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:12:29,678 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:12:29,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:12:29,681 INFO L82 PathProgramCache]: Analyzing trace with hash 44786, now seen corresponding path program 1 times [2020-11-30 00:12:29,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:12:29,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972937528] [2020-11-30 00:12:29,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:12:29,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:12:29,703 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:12:29,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:12:29,719 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:12:29,723 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:12:29,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:12:29,726 INFO L82 PathProgramCache]: Analyzing trace with hash 889574255, now seen corresponding path program 1 times [2020-11-30 00:12:29,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:12:29,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508839291] [2020-11-30 00:12:29,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:12:29,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:12:29,769 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:12:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:12:29,833 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:12:29,839 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:12:30,035 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 17 [2020-11-30 00:12:30,050 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:12:30,050 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:12:30,051 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:12:30,051 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:12:30,051 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:12:30,051 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:12:30,052 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:12:30,052 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:12:30,052 INFO L133 ssoRankerPreferences]: Filename of dumped script: half.i_Iteration1_Loop [2020-11-30 00:12:30,052 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:12:30,052 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:12:30,081 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:12:30,092 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:12:30,102 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:12:30,120 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:12:30,317 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:12:30,317 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_90b37169-02e3-402b-b611-23d482b4ec80/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:12:30,332 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:12:30,332 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:12:30,345 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:12:30,345 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5=0} Honda state: {ULTIMATE.start_main_#t~post5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_90b37169-02e3-402b-b611-23d482b4ec80/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:12:30,398 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:12:30,398 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_90b37169-02e3-402b-b611-23d482b4ec80/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:12:30,453 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:12:30,453 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:12:30,475 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:12:30,475 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~n~0=0} Honda state: {ULTIMATE.start_main_~n~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~n~0=-5}, {ULTIMATE.start_main_~n~0=-1}, {ULTIMATE.start_main_~n~0=7}] Lambdas: [1, 8, 1] Nus: [0, 1] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_90b37169-02e3-402b-b611-23d482b4ec80/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:12:30,517 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:12:30,517 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_90b37169-02e3-402b-b611-23d482b4ec80/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:12:30,569 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:12:30,570 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:12:30,761 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:12:30,764 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:12:30,764 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:12:30,764 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:12:30,765 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:12:30,765 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:12:30,765 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:12:30,765 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:12:30,765 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:12:30,765 INFO L133 ssoRankerPreferences]: Filename of dumped script: half.i_Iteration1_Loop [2020-11-30 00:12:30,765 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:12:30,765 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:12:30,767 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:12:30,781 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:12:30,791 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:12:30,807 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:12:30,924 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:12:30,930 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_90b37169-02e3-402b-b611-23d482b4ec80/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:12:30,947 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:12:30,950 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:12:30,951 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:12:30,951 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:12:30,951 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:12:30,952 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:12:30,956 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:12:30,956 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:12:30,959 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_90b37169-02e3-402b-b611-23d482b4ec80/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:12:31,004 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:12:31,007 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:12:31,007 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:12:31,007 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:12:31,007 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:12:31,007 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:12:31,009 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:12:31,009 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:12:31,012 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_90b37169-02e3-402b-b611-23d482b4ec80/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:12:31,065 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:12:31,067 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:12:31,068 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:12:31,068 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:12:31,068 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:12:31,068 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:12:31,071 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:12:31,071 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:12:31,076 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:12:31,114 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 00:12:31,115 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_90b37169-02e3-402b-b611-23d482b4ec80/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) [2020-11-30 00:12:31,125 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:12:31,125 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:12:31,125 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:12:31,126 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0, ULTIMATE.start_main_~i~0) = 2*ULTIMATE.start_main_~k~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:12:31,173 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:12:31,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:12:31,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:12:31,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:12:31,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:12:31,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:12:31,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:12:31,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:12:31,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:12:31,353 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-30 00:12:31,355 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states. Second operand 3 states. [2020-11-30 00:12:31,421 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states.. Second operand 3 states. Result 37 states and 47 transitions. Complement of second has 7 states. [2020-11-30 00:12:31,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-30 00:12:31,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 00:12:31,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 31 transitions. [2020-11-30 00:12:31,427 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 31 transitions. Stem has 3 letters. Loop has 3 letters. [2020-11-30 00:12:31,428 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:12:31,429 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 31 transitions. Stem has 6 letters. Loop has 3 letters. [2020-11-30 00:12:31,429 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:12:31,429 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 31 transitions. Stem has 3 letters. Loop has 6 letters. [2020-11-30 00:12:31,430 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:12:31,431 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 47 transitions. [2020-11-30 00:12:31,435 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 00:12:31,439 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 0 states and 0 transitions. [2020-11-30 00:12:31,440 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-30 00:12:31,440 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-30 00:12:31,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-30 00:12:31,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:12:31,442 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:12:31,442 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:12:31,442 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:12:31,442 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-30 00:12:31,442 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:12:31,443 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 00:12:31,443 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-30 00:12:31,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 30.11 12:12:31 BoogieIcfgContainer [2020-11-30 00:12:31,450 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-30 00:12:31,451 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:12:31,451 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:12:31,451 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:12:31,452 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:12:29" (3/4) ... [2020-11-30 00:12:31,456 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 00:12:31,456 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:12:31,458 INFO L168 Benchmark]: Toolchain (without parser) took 2802.26 ms. Allocated memory was 96.5 MB in the beginning and 130.0 MB in the end (delta: 33.6 MB). Free memory was 67.5 MB in the beginning and 96.8 MB in the end (delta: -29.3 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:12:31,460 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 96.5 MB. Free memory was 53.7 MB in the beginning and 53.7 MB in the end (delta: 39.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:12:31,460 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.19 ms. Allocated memory is still 96.5 MB. Free memory was 67.2 MB in the beginning and 74.4 MB in the end (delta: -7.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:12:31,461 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.41 ms. Allocated memory is still 96.5 MB. Free memory was 74.4 MB in the beginning and 73.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:12:31,462 INFO L168 Benchmark]: Boogie Preprocessor took 25.31 ms. Allocated memory is still 96.5 MB. Free memory was 73.1 MB in the beginning and 72.3 MB in the end (delta: 866.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:12:31,463 INFO L168 Benchmark]: RCFGBuilder took 344.38 ms. Allocated memory is still 96.5 MB. Free memory was 71.9 MB in the beginning and 61.0 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:12:31,464 INFO L168 Benchmark]: BuchiAutomizer took 2082.60 ms. Allocated memory was 96.5 MB in the beginning and 130.0 MB in the end (delta: 33.6 MB). Free memory was 60.6 MB in the beginning and 96.8 MB in the end (delta: -36.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:12:31,465 INFO L168 Benchmark]: Witness Printer took 5.71 ms. Allocated memory is still 130.0 MB. Free memory is still 96.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:12:31,469 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 96.5 MB. Free memory was 53.7 MB in the beginning and 53.7 MB in the end (delta: 39.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 296.19 ms. Allocated memory is still 96.5 MB. Free memory was 67.2 MB in the beginning and 74.4 MB in the end (delta: -7.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.41 ms. Allocated memory is still 96.5 MB. Free memory was 74.4 MB in the beginning and 73.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.31 ms. Allocated memory is still 96.5 MB. Free memory was 73.1 MB in the beginning and 72.3 MB in the end (delta: 866.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 344.38 ms. Allocated memory is still 96.5 MB. Free memory was 71.9 MB in the beginning and 61.0 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2082.60 ms. Allocated memory was 96.5 MB in the beginning and 130.0 MB in the end (delta: 33.6 MB). Free memory was 60.6 MB in the beginning and 96.8 MB in the end (delta: -36.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.71 ms. Allocated memory is still 130.0 MB. Free memory is still 96.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function 2 * k + -1 * i and consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.0s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 12 SDtfs, 15 SDslu, 12 SDs, 0 SdLazy, 13 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital22 mio100 ax100 hnf100 lsp77 ukn100 mio100 lsp100 div317 bol100 ite100 ukn100 eq148 hnf50 smp92 dnf100 smp100 tf105 neg100 sie105 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 28ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...