./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-wcet2.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_e87c8a35-8e4a-4fe9-a1ad-4a38a4b9b9ab/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e87c8a35-8e4a-4fe9-a1ad-4a38a4b9b9ab/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e87c8a35-8e4a-4fe9-a1ad-4a38a4b9b9ab/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e87c8a35-8e4a-4fe9-a1ad-4a38a4b9b9ab/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-wcet2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e87c8a35-8e4a-4fe9-a1ad-4a38a4b9b9ab/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e87c8a35-8e4a-4fe9-a1ad-4a38a4b9b9ab/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 4f5dfa3dfde4da491a923b915452cddcc4ed5c87 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 00:03:50,002 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:03:50,004 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:03:50,037 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:03:50,038 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:03:50,039 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:03:50,041 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:03:50,044 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:03:50,046 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:03:50,047 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:03:50,049 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:03:50,050 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:03:50,051 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:03:50,052 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:03:50,054 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:03:50,055 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:03:50,056 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:03:50,057 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:03:50,063 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:03:50,065 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:03:50,067 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:03:50,077 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:03:50,078 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:03:50,079 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:03:50,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:03:50,083 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:03:50,083 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:03:50,085 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:03:50,085 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:03:50,091 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:03:50,092 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:03:50,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:03:50,095 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:03:50,097 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:03:50,099 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:03:50,099 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:03:50,100 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:03:50,100 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:03:50,100 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:03:50,101 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:03:50,102 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:03:50,106 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e87c8a35-8e4a-4fe9-a1ad-4a38a4b9b9ab/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-30 00:03:50,151 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:03:50,151 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:03:50,153 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:03:50,154 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:03:50,154 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:03:50,154 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-30 00:03:50,154 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-30 00:03:50,154 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-30 00:03:50,155 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-30 00:03:50,155 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-30 00:03:50,156 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-30 00:03:50,156 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:03:50,157 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 00:03:50,157 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:03:50,157 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:03:50,157 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-30 00:03:50,157 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-30 00:03:50,157 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-30 00:03:50,158 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:03:50,158 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-30 00:03:50,158 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:03:50,158 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-30 00:03:50,158 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:03:50,159 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:03:50,159 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-30 00:03:50,159 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:03:50,159 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:03:50,160 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:03:50,160 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-30 00:03:50,161 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-30 00:03:50,162 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_e87c8a35-8e4a-4fe9-a1ad-4a38a4b9b9ab/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e87c8a35-8e4a-4fe9-a1ad-4a38a4b9b9ab/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f5dfa3dfde4da491a923b915452cddcc4ed5c87 [2020-11-30 00:03:50,524 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:03:50,551 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:03:50,554 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:03:50,556 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:03:50,557 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:03:50,558 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e87c8a35-8e4a-4fe9-a1ad-4a38a4b9b9ab/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-wcet2.c [2020-11-30 00:03:50,642 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e87c8a35-8e4a-4fe9-a1ad-4a38a4b9b9ab/bin/uautomizer/data/62b334562/3dce774fa9a3479fae1725283b83d037/FLAGc9137678a [2020-11-30 00:03:51,225 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:03:51,226 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e87c8a35-8e4a-4fe9-a1ad-4a38a4b9b9ab/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-wcet2.c [2020-11-30 00:03:51,238 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e87c8a35-8e4a-4fe9-a1ad-4a38a4b9b9ab/bin/uautomizer/data/62b334562/3dce774fa9a3479fae1725283b83d037/FLAGc9137678a [2020-11-30 00:03:51,600 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e87c8a35-8e4a-4fe9-a1ad-4a38a4b9b9ab/bin/uautomizer/data/62b334562/3dce774fa9a3479fae1725283b83d037 [2020-11-30 00:03:51,604 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:03:51,605 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:03:51,608 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:03:51,608 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:03:51,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:03:51,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:03:51" (1/1) ... [2020-11-30 00:03:51,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@157c1d99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:03:51, skipping insertion in model container [2020-11-30 00:03:51,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:03:51" (1/1) ... [2020-11-30 00:03:51,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:03:51,640 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:03:51,799 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:03:51,803 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:03:51,821 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:03:51,834 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:03:51,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:03:51 WrapperNode [2020-11-30 00:03:51,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:03:51,836 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:03:51,837 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:03:51,837 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:03:51,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:03:51" (1/1) ... [2020-11-30 00:03:51,853 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:03:51" (1/1) ... [2020-11-30 00:03:51,874 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:03:51,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:03:51,877 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:03:51,877 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:03:51,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:03:51" (1/1) ... [2020-11-30 00:03:51,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:03:51" (1/1) ... [2020-11-30 00:03:51,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:03:51" (1/1) ... [2020-11-30 00:03:51,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:03:51" (1/1) ... [2020-11-30 00:03:51,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:03:51" (1/1) ... [2020-11-30 00:03:51,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:03:51" (1/1) ... [2020-11-30 00:03:51,900 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:03:51" (1/1) ... [2020-11-30 00:03:51,901 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:03:51,903 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:03:51,903 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:03:51,904 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:03:51,905 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:03:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e87c8a35-8e4a-4fe9-a1ad-4a38a4b9b9ab/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 00:03:51,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:03:51,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:03:52,184 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:03:52,185 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-30 00:03:52,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:03:52 BoogieIcfgContainer [2020-11-30 00:03:52,187 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:03:52,189 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-30 00:03:52,189 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-30 00:03:52,193 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-30 00:03:52,194 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:03:52,194 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 30.11 12:03:51" (1/3) ... [2020-11-30 00:03:52,196 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@112fccc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:03:52, skipping insertion in model container [2020-11-30 00:03:52,196 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:03:52,196 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:03:51" (2/3) ... [2020-11-30 00:03:52,197 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@112fccc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:03:52, skipping insertion in model container [2020-11-30 00:03:52,197 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:03:52,197 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:03:52" (3/3) ... [2020-11-30 00:03:52,199 INFO L373 chiAutomizerObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-wcet2.c [2020-11-30 00:03:52,271 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-30 00:03:52,271 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-30 00:03:52,271 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-30 00:03:52,271 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:03:52,271 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:03:52,271 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-30 00:03:52,272 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:03:52,272 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-30 00:03:52,285 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-30 00:03:52,305 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 00:03:52,305 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:03:52,305 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:03:52,311 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-30 00:03:52,312 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 00:03:52,312 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-30 00:03:52,312 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-30 00:03:52,314 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 00:03:52,314 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:03:52,314 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:03:52,315 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-30 00:03:52,315 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 00:03:52,323 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~i~0, main_~j~0;havoc main_~i~0;havoc main_~j~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1; 3#L17-2true [2020-11-30 00:03:52,323 INFO L796 eck$LassoCheckResult]: Loop: 3#L17-2true assume !!(main_~i~0 < 5);main_~j~0 := 0; 6#L19-2true assume !(main_~i~0 > 2 && main_~j~0 <= 9); 5#L19-3true main_~i~0 := 1 + main_~i~0; 3#L17-2true [2020-11-30 00:03:52,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:03:52,331 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-11-30 00:03:52,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:03:52,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919053012] [2020-11-30 00:03:52,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:03:52,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:03:52,429 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:03:52,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:03:52,440 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:03:52,459 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:03:52,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:03:52,465 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2020-11-30 00:03:52,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:03:52,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28541038] [2020-11-30 00:03:52,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:03:52,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:03:52,493 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:03:52,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:03:52,508 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:03:52,511 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:03:52,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:03:52,524 INFO L82 PathProgramCache]: Analyzing trace with hash 963472, now seen corresponding path program 1 times [2020-11-30 00:03:52,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:03:52,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238759332] [2020-11-30 00:03:52,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:03:52,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:03:52,532 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:03:52,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:03:52,538 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:03:52,539 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:03:52,732 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2020-11-30 00:03:52,779 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:03:52,780 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:03:52,780 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:03:52,780 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:03:52,780 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:03:52,781 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:03:52,781 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:03:52,781 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:03:52,781 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wcet2.c_Iteration1_Loop [2020-11-30 00:03:52,781 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:03:52,781 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:03:52,802 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 00:03:52,810 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 00:03:52,822 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:03:52,830 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 00:03:52,961 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:03:52,961 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e87c8a35-8e4a-4fe9-a1ad-4a38a4b9b9ab/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:03:52,974 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:03:52,974 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:03:52,981 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:03:52,981 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e87c8a35-8e4a-4fe9-a1ad-4a38a4b9b9ab/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:03:53,006 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:03:53,007 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:03:53,023 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:03:53,024 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e87c8a35-8e4a-4fe9-a1ad-4a38a4b9b9ab/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 00:03:53,074 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:03:53,075 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 00:03:53,078 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:03:53,078 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~j~0=0} Honda state: {ULTIMATE.start_main_~j~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e87c8a35-8e4a-4fe9-a1ad-4a38a4b9b9ab/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:03:53,102 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:03:53,102 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e87c8a35-8e4a-4fe9-a1ad-4a38a4b9b9ab/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 [2020-11-30 00:03:53,133 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:03:53,133 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:03:53,178 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:03:53,181 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:03:53,181 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:03:53,181 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:03:53,181 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:03:53,181 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:03:53,182 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:03:53,182 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:03:53,182 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:03:53,182 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wcet2.c_Iteration1_Loop [2020-11-30 00:03:53,182 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:03:53,182 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:03:53,184 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 00:03:53,199 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 00:03:53,222 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 00:03:53,248 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 00:03:53,483 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:03:53,488 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e87c8a35-8e4a-4fe9-a1ad-4a38a4b9b9ab/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) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:03:53,497 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 00:03:53,499 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:03:53,499 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:03:53,500 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:03:53,500 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:03:53,505 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:03:53,505 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 00:03:53,511 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e87c8a35-8e4a-4fe9-a1ad-4a38a4b9b9ab/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 00:03:53,536 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 00:03:53,538 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:03:53,538 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:03:53,538 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:03:53,538 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:03:53,539 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:03:53,541 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:03:53,541 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:03:53,547 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:03:53,550 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 00:03:53,550 INFO L444 ModelExtractionUtils]: 0 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_e87c8a35-8e4a-4fe9-a1ad-4a38a4b9b9ab/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) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:03:53,557 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:03:53,557 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:03:53,558 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:03:53,558 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 5 Supporting invariants [] [2020-11-30 00:03:53,586 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:03:53,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:03:53,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:03:53,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:03:53,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:03:53,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:03:53,650 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 00:03:53,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:03:53,733 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:03:53,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:03:53,781 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-30 00:03:53,782 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 4 states. [2020-11-30 00:03:53,903 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 4 states. Result 30 states and 48 transitions. Complement of second has 9 states. [2020-11-30 00:03:53,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-11-30 00:03:53,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-30 00:03:53,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 28 transitions. [2020-11-30 00:03:53,908 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 28 transitions. Stem has 1 letters. Loop has 3 letters. [2020-11-30 00:03:53,908 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:03:53,908 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 28 transitions. Stem has 4 letters. Loop has 3 letters. [2020-11-30 00:03:53,909 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:03:53,909 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 28 transitions. Stem has 1 letters. Loop has 6 letters. [2020-11-30 00:03:53,909 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:03:53,910 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 48 transitions. [2020-11-30 00:03:53,913 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-30 00:03:53,916 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 13 states and 18 transitions. [2020-11-30 00:03:53,917 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-11-30 00:03:53,917 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-11-30 00:03:53,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 18 transitions. [2020-11-30 00:03:53,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:03:53,918 INFO L691 BuchiCegarLoop]: Abstraction has 13 states and 18 transitions. [2020-11-30 00:03:53,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 18 transitions. [2020-11-30 00:03:53,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2020-11-30 00:03:53,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-30 00:03:53,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2020-11-30 00:03:53,943 INFO L714 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2020-11-30 00:03:53,943 INFO L594 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2020-11-30 00:03:53,943 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-30 00:03:53,943 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 17 transitions. [2020-11-30 00:03:53,944 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-30 00:03:53,944 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:03:53,944 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:03:53,944 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-30 00:03:53,944 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-30 00:03:53,945 INFO L794 eck$LassoCheckResult]: Stem: 86#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~i~0, main_~j~0;havoc main_~i~0;havoc main_~j~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1; 87#L17-2 assume !!(main_~i~0 < 5);main_~j~0 := 0; 83#L19-2 [2020-11-30 00:03:53,945 INFO L796 eck$LassoCheckResult]: Loop: 83#L19-2 assume !!(main_~i~0 > 2 && main_~j~0 <= 9);main_~j~0 := 1 + main_~j~0; 90#L19-2 assume !(main_~i~0 > 2 && main_~j~0 <= 9); 88#L19-3 main_~i~0 := 1 + main_~i~0; 82#L17-2 assume !!(main_~i~0 < 5);main_~j~0 := 0; 83#L19-2 [2020-11-30 00:03:53,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:03:53,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-11-30 00:03:53,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:03:53,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015772608] [2020-11-30 00:03:53,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:03:53,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:03:53,951 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:03:53,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:03:53,954 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:03:53,955 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:03:53,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:03:53,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1506610, now seen corresponding path program 1 times [2020-11-30 00:03:53,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:03:53,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443298813] [2020-11-30 00:03:53,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:03:53,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:03:53,963 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:03:53,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:03:53,968 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:03:53,969 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:03:53,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:03:53,970 INFO L82 PathProgramCache]: Analyzing trace with hash 925951131, now seen corresponding path program 1 times [2020-11-30 00:03:53,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:03:53,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957506966] [2020-11-30 00:03:53,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:03:53,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:03:54,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:03:54,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957506966] [2020-11-30 00:03:54,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088338368] [2020-11-30 00:03:54,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e87c8a35-8e4a-4fe9-a1ad-4a38a4b9b9ab/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:03:54,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:03:54,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:03:54,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:03:54,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:03:54,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:03:54,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2020-11-30 00:03:54,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41116668] [2020-11-30 00:03:54,194 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:03:54,195 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:03:54,195 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:03:54,195 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:03:54,195 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:03:54,195 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:03:54,195 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:03:54,195 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:03:54,196 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wcet2.c_Iteration2_Loop [2020-11-30 00:03:54,196 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:03:54,196 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:03:54,198 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 00:03:54,207 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 00:03:54,219 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 00:03:54,224 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 00:03:54,323 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:03:54,323 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e87c8a35-8e4a-4fe9-a1ad-4a38a4b9b9ab/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:03:54,330 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:03:54,330 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:03:54,333 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:03:54,333 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e87c8a35-8e4a-4fe9-a1ad-4a38a4b9b9ab/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:03:54,357 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:03:54,357 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e87c8a35-8e4a-4fe9-a1ad-4a38a4b9b9ab/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 [2020-11-30 00:03:54,383 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:03:54,383 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:03:54,418 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:03:54,420 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:03:54,420 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:03:54,420 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:03:54,420 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:03:54,420 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:03:54,420 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:03:54,420 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:03:54,420 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:03:54,421 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wcet2.c_Iteration2_Loop [2020-11-30 00:03:54,421 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:03:54,421 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:03:54,423 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 00:03:54,433 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 00:03:54,442 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 00:03:54,447 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 00:03:54,550 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:03:54,550 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e87c8a35-8e4a-4fe9-a1ad-4a38a4b9b9ab/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:03:54,579 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 00:03:54,582 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:03:54,582 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:03:54,582 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:03:54,583 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:03:54,583 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:03:54,585 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:03:54,585 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:03:54,588 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:03:54,595 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 00:03:54,595 INFO L444 ModelExtractionUtils]: 0 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_e87c8a35-8e4a-4fe9-a1ad-4a38a4b9b9ab/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:03:54,599 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:03:54,599 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:03:54,599 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:03:54,600 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 7 Supporting invariants [] Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:03:54,636 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:03:54,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:03:54,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:03:54,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:03:54,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:03:54,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:03:54,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:03:54,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:03:54,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 00:03:54,716 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 00:03:54,716 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 7 Second operand 4 states. [2020-11-30 00:03:54,755 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 22 states and 31 transitions. Complement of second has 6 states. [2020-11-30 00:03:54,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-30 00:03:54,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-30 00:03:54,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2020-11-30 00:03:54,757 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 4 letters. [2020-11-30 00:03:54,757 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:03:54,757 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2020-11-30 00:03:54,757 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:03:54,758 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 8 letters. [2020-11-30 00:03:54,758 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:03:54,758 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 31 transitions. [2020-11-30 00:03:54,759 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-30 00:03:54,760 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 15 states and 22 transitions. [2020-11-30 00:03:54,760 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-11-30 00:03:54,761 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-11-30 00:03:54,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 22 transitions. [2020-11-30 00:03:54,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:03:54,761 INFO L691 BuchiCegarLoop]: Abstraction has 15 states and 22 transitions. [2020-11-30 00:03:54,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 22 transitions. [2020-11-30 00:03:54,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2020-11-30 00:03:54,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-30 00:03:54,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 21 transitions. [2020-11-30 00:03:54,763 INFO L714 BuchiCegarLoop]: Abstraction has 14 states and 21 transitions. [2020-11-30 00:03:54,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:03:54,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:03:54,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:03:54,771 INFO L87 Difference]: Start difference. First operand 14 states and 21 transitions. Second operand 4 states. [2020-11-30 00:03:54,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:03:54,797 INFO L93 Difference]: Finished difference Result 17 states and 24 transitions. [2020-11-30 00:03:54,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:03:54,797 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 24 transitions. [2020-11-30 00:03:54,798 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-30 00:03:54,799 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 17 states and 24 transitions. [2020-11-30 00:03:54,799 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-11-30 00:03:54,799 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-11-30 00:03:54,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 24 transitions. [2020-11-30 00:03:54,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:03:54,800 INFO L691 BuchiCegarLoop]: Abstraction has 17 states and 24 transitions. [2020-11-30 00:03:54,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 24 transitions. [2020-11-30 00:03:54,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2020-11-30 00:03:54,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-30 00:03:54,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 23 transitions. [2020-11-30 00:03:54,802 INFO L714 BuchiCegarLoop]: Abstraction has 16 states and 23 transitions. [2020-11-30 00:03:54,802 INFO L594 BuchiCegarLoop]: Abstraction has 16 states and 23 transitions. [2020-11-30 00:03:54,802 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-30 00:03:54,802 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 23 transitions. [2020-11-30 00:03:54,803 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-30 00:03:54,803 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:03:54,803 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:03:54,804 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-30 00:03:54,809 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-30 00:03:54,822 INFO L794 eck$LassoCheckResult]: Stem: 210#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~i~0, main_~j~0;havoc main_~i~0;havoc main_~j~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1; 205#L17-2 assume !!(main_~i~0 < 5);main_~j~0 := 0; 207#L19-2 assume !!(main_~i~0 > 2 && main_~j~0 <= 9);main_~j~0 := 1 + main_~j~0; 211#L19-2 [2020-11-30 00:03:54,822 INFO L796 eck$LassoCheckResult]: Loop: 211#L19-2 assume !!(main_~i~0 > 2 && main_~j~0 <= 9);main_~j~0 := 1 + main_~j~0; 211#L19-2 [2020-11-30 00:03:54,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:03:54,822 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2020-11-30 00:03:54,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:03:54,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811784228] [2020-11-30 00:03:54,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:03:54,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:03:54,828 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:03:54,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:03:54,835 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:03:54,836 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:03:54,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:03:54,837 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2020-11-30 00:03:54,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:03:54,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490970591] [2020-11-30 00:03:54,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:03:54,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:03:54,841 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:03:54,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:03:54,843 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:03:54,844 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:03:54,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:03:54,845 INFO L82 PathProgramCache]: Analyzing trace with hash 963530, now seen corresponding path program 2 times [2020-11-30 00:03:54,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:03:54,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070478562] [2020-11-30 00:03:54,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:03:54,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:03:54,868 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:03:54,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:03:54,880 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:03:54,881 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:03:54,911 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:03:54,912 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:03:54,912 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:03:54,912 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:03:54,912 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:03:54,912 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:03:54,912 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:03:54,912 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:03:54,912 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wcet2.c_Iteration3_Loop [2020-11-30 00:03:54,912 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:03:54,912 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:03:54,914 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:03:54,922 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 00:03:54,927 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:03:54,934 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 00:03:54,996 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:03:54,996 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e87c8a35-8e4a-4fe9-a1ad-4a38a4b9b9ab/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:03:55,002 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:03:55,002 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:03:55,006 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:03:55,006 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e87c8a35-8e4a-4fe9-a1ad-4a38a4b9b9ab/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) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:03:55,043 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:03:55,043 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:03:55,047 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:03:55,047 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~i~0=3} Honda state: {ULTIMATE.start_main_~i~0=3} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e87c8a35-8e4a-4fe9-a1ad-4a38a4b9b9ab/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) [2020-11-30 00:03:55,071 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:03:55,071 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 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e87c8a35-8e4a-4fe9-a1ad-4a38a4b9b9ab/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) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:03:55,101 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:03:55,101 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:03:55,137 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:03:55,139 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:03:55,139 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:03:55,139 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:03:55,139 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:03:55,139 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:03:55,139 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:03:55,140 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:03:55,140 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:03:55,140 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wcet2.c_Iteration3_Loop [2020-11-30 00:03:55,140 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:03:55,140 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:03:55,141 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 00:03:55,148 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 00:03:55,156 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 00:03:55,159 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 00:03:55,233 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:03:55,233 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e87c8a35-8e4a-4fe9-a1ad-4a38a4b9b9ab/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) [2020-11-30 00:03:55,247 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 00:03:55,249 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:03:55,249 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:03:55,249 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:03:55,249 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:03:55,249 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:03:55,250 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:03:55,251 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:03:55,253 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e87c8a35-8e4a-4fe9-a1ad-4a38a4b9b9ab/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) [2020-11-30 00:03:55,301 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:03:55,303 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:03:55,303 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:03:55,303 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:03:55,303 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:03:55,304 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:03:55,305 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:03:55,305 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:03:55,307 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:03:55,312 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 00:03:55,313 INFO L444 ModelExtractionUtils]: 0 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_e87c8a35-8e4a-4fe9-a1ad-4a38a4b9b9ab/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) [2020-11-30 00:03:55,326 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:03:55,326 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:03:55,326 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:03:55,326 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = -2*ULTIMATE.start_main_~j~0 + 19 Supporting invariants [] Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:03:55,384 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:03:55,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:03:55,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:03:55,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:03:55,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:03:55,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:03:55,450 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:03:55,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:03:55,450 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 00:03:55,451 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-30 00:03:55,451 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 23 transitions. cyclomatic complexity: 10 Second operand 2 states. [2020-11-30 00:03:55,473 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 23 transitions. cyclomatic complexity: 10. Second operand 2 states. Result 34 states and 46 transitions. Complement of second has 5 states. [2020-11-30 00:03:55,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-30 00:03:55,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-30 00:03:55,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2020-11-30 00:03:55,475 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 3 letters. Loop has 1 letters. [2020-11-30 00:03:55,476 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:03:55,476 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 1 letters. [2020-11-30 00:03:55,476 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:03:55,476 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 3 letters. Loop has 2 letters. [2020-11-30 00:03:55,476 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:03:55,476 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 46 transitions. [2020-11-30 00:03:55,478 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-30 00:03:55,479 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 28 states and 39 transitions. [2020-11-30 00:03:55,479 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-11-30 00:03:55,479 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-11-30 00:03:55,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 39 transitions. [2020-11-30 00:03:55,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:03:55,479 INFO L691 BuchiCegarLoop]: Abstraction has 28 states and 39 transitions. [2020-11-30 00:03:55,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 39 transitions. [2020-11-30 00:03:55,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 20. [2020-11-30 00:03:55,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-30 00:03:55,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 29 transitions. [2020-11-30 00:03:55,483 INFO L714 BuchiCegarLoop]: Abstraction has 20 states and 29 transitions. [2020-11-30 00:03:55,483 INFO L594 BuchiCegarLoop]: Abstraction has 20 states and 29 transitions. [2020-11-30 00:03:55,483 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-30 00:03:55,483 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 29 transitions. [2020-11-30 00:03:55,484 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-30 00:03:55,484 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:03:55,484 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:03:55,485 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1] [2020-11-30 00:03:55,485 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-30 00:03:55,485 INFO L794 eck$LassoCheckResult]: Stem: 294#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~i~0, main_~j~0;havoc main_~i~0;havoc main_~j~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1; 287#L17-2 assume !!(main_~i~0 < 5);main_~j~0 := 0; 289#L19-2 assume !!(main_~i~0 > 2 && main_~j~0 <= 9);main_~j~0 := 1 + main_~j~0; 295#L19-2 assume !!(main_~i~0 > 2 && main_~j~0 <= 9);main_~j~0 := 1 + main_~j~0; 296#L19-2 assume !(main_~i~0 > 2 && main_~j~0 <= 9); 292#L19-3 main_~i~0 := 1 + main_~i~0; 293#L17-2 assume !!(main_~i~0 < 5);main_~j~0 := 0; 297#L19-2 assume !!(main_~i~0 > 2 && main_~j~0 <= 9);main_~j~0 := 1 + main_~j~0; 298#L19-2 [2020-11-30 00:03:55,485 INFO L796 eck$LassoCheckResult]: Loop: 298#L19-2 assume !!(main_~i~0 > 2 && main_~j~0 <= 9);main_~j~0 := 1 + main_~j~0; 298#L19-2 [2020-11-30 00:03:55,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:03:55,486 INFO L82 PathProgramCache]: Analyzing trace with hash 782487737, now seen corresponding path program 2 times [2020-11-30 00:03:55,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:03:55,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333725118] [2020-11-30 00:03:55,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:03:55,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:03:55,545 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:03:55,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333725118] [2020-11-30 00:03:55,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944467987] [2020-11-30 00:03:55,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e87c8a35-8e4a-4fe9-a1ad-4a38a4b9b9ab/bin/uautomizer/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-11-30 00:03:55,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 00:03:55,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:03:55,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 00:03:55,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:03:55,599 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:03:55,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:03:55,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-11-30 00:03:55,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756056826] [2020-11-30 00:03:55,600 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-30 00:03:55,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:03:55,600 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2020-11-30 00:03:55,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:03:55,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557652659] [2020-11-30 00:03:55,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:03:55,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:03:55,604 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:03:55,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:03:55,610 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:03:55,611 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:03:55,639 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:03:55,639 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:03:55,639 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:03:55,639 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:03:55,639 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:03:55,639 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:03:55,639 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:03:55,639 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:03:55,640 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wcet2.c_Iteration4_Loop [2020-11-30 00:03:55,640 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:03:55,640 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:03:55,641 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 00:03:55,663 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 00:03:55,668 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 00:03:55,672 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 00:03:55,731 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:03:55,731 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e87c8a35-8e4a-4fe9-a1ad-4a38a4b9b9ab/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) [2020-11-30 00:03:55,739 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:03:55,739 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e87c8a35-8e4a-4fe9-a1ad-4a38a4b9b9ab/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) [2020-11-30 00:03:55,782 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:03:55,782 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:03:55,825 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:03:55,826 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:03:55,826 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:03:55,826 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:03:55,826 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:03:55,826 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:03:55,826 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:03:55,826 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:03:55,826 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:03:55,827 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wcet2.c_Iteration4_Loop [2020-11-30 00:03:55,827 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:03:55,827 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:03:55,828 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 00:03:55,838 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 00:03:55,891 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 00:03:55,900 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 00:03:55,957 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:03:55,957 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e87c8a35-8e4a-4fe9-a1ad-4a38a4b9b9ab/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) [2020-11-30 00:03:55,975 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 00:03:55,978 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:03:55,978 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:03:55,979 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:03:55,979 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:03:55,979 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:03:55,983 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:03:55,983 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:03:55,985 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:03:55,988 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 00:03:55,989 INFO L444 ModelExtractionUtils]: 0 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_e87c8a35-8e4a-4fe9-a1ad-4a38a4b9b9ab/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) [2020-11-30 00:03:55,992 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:03:55,992 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:03:55,992 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:03:55,992 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = -2*ULTIMATE.start_main_~j~0 + 19 Supporting invariants [] Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:03:56,018 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:03:56,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:03:56,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:03:56,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:03:56,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:03:56,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:03:56,065 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:03:56,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:03:56,066 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 00:03:56,066 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-30 00:03:56,066 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 29 transitions. cyclomatic complexity: 13 Second operand 2 states. [2020-11-30 00:03:56,084 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 29 transitions. cyclomatic complexity: 13. Second operand 2 states. Result 32 states and 43 transitions. Complement of second has 5 states. [2020-11-30 00:03:56,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-30 00:03:56,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-30 00:03:56,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2020-11-30 00:03:56,085 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 1 letters. [2020-11-30 00:03:56,085 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:03:56,085 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 00:03:56,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:03:56,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:03:56,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:03:56,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:03:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:03:56,113 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:03:56,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:03:56,114 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 00:03:56,114 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-30 00:03:56,114 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 29 transitions. cyclomatic complexity: 13 Second operand 2 states. [2020-11-30 00:03:56,125 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 29 transitions. cyclomatic complexity: 13. Second operand 2 states. Result 32 states and 43 transitions. Complement of second has 5 states. [2020-11-30 00:03:56,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-30 00:03:56,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-30 00:03:56,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2020-11-30 00:03:56,126 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 1 letters. [2020-11-30 00:03:56,126 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:03:56,126 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 00:03:56,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:03:56,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:03:56,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:03:56,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:03:56,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:03:56,172 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:03:56,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:03:56,172 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 00:03:56,172 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-30 00:03:56,173 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 29 transitions. cyclomatic complexity: 13 Second operand 2 states. [2020-11-30 00:03:56,187 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 29 transitions. cyclomatic complexity: 13. Second operand 2 states. Result 25 states and 34 transitions. Complement of second has 4 states. [2020-11-30 00:03:56,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-30 00:03:56,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-30 00:03:56,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-11-30 00:03:56,188 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 8 letters. Loop has 1 letters. [2020-11-30 00:03:56,188 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:03:56,188 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 1 letters. [2020-11-30 00:03:56,188 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:03:56,188 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 8 letters. Loop has 2 letters. [2020-11-30 00:03:56,189 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:03:56,189 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 34 transitions. [2020-11-30 00:03:56,190 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 00:03:56,190 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 0 states and 0 transitions. [2020-11-30 00:03:56,190 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-30 00:03:56,190 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-30 00:03:56,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-30 00:03:56,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:03:56,190 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:03:56,190 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:03:56,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:03:56,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:03:56,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:03:56,191 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2020-11-30 00:03:56,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:03:56,192 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-11-30 00:03:56,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:03:56,192 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-11-30 00:03:56,192 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 00:03:56,192 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 00:03:56,192 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-30 00:03:56,192 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-30 00:03:56,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-30 00:03:56,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:03:56,192 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:03:56,192 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:03:56,192 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:03:56,192 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-30 00:03:56,192 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:03:56,193 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 00:03:56,193 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-30 00:03:56,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 30.11 12:03:56 BoogieIcfgContainer [2020-11-30 00:03:56,198 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-30 00:03:56,199 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:03:56,199 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:03:56,199 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:03:56,202 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:03:52" (3/4) ... [2020-11-30 00:03:56,205 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 00:03:56,205 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:03:56,207 INFO L168 Benchmark]: Toolchain (without parser) took 4600.93 ms. Allocated memory was 96.5 MB in the beginning and 119.5 MB in the end (delta: 23.1 MB). Free memory was 55.2 MB in the beginning and 66.0 MB in the end (delta: -10.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 16.1 GB. [2020-11-30 00:03:56,208 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 96.5 MB. Free memory is still 71.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:03:56,209 INFO L168 Benchmark]: CACSL2BoogieTranslator took 227.82 ms. Allocated memory is still 96.5 MB. Free memory was 55.1 MB in the beginning and 73.2 MB in the end (delta: -18.1 MB). Peak memory consumption was 8.9 MB. Max. memory is 16.1 GB. [2020-11-30 00:03:56,213 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.32 ms. Allocated memory is still 96.5 MB. Free memory was 73.2 MB in the beginning and 71.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:03:56,214 INFO L168 Benchmark]: Boogie Preprocessor took 25.20 ms. Allocated memory is still 96.5 MB. Free memory was 71.8 MB in the beginning and 71.0 MB in the end (delta: 795.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:03:56,215 INFO L168 Benchmark]: RCFGBuilder took 284.77 ms. Allocated memory is still 96.5 MB. Free memory was 71.0 MB in the beginning and 72.1 MB in the end (delta: -1.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-30 00:03:56,215 INFO L168 Benchmark]: BuchiAutomizer took 4009.84 ms. Allocated memory was 96.5 MB in the beginning and 119.5 MB in the end (delta: 23.1 MB). Free memory was 72.1 MB in the beginning and 66.0 MB in the end (delta: 6.1 MB). Peak memory consumption was 32.3 MB. Max. memory is 16.1 GB. [2020-11-30 00:03:56,216 INFO L168 Benchmark]: Witness Printer took 6.56 ms. Allocated memory is still 119.5 MB. Free memory is still 66.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:03:56,227 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 96.5 MB. Free memory is still 71.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 227.82 ms. Allocated memory is still 96.5 MB. Free memory was 55.1 MB in the beginning and 73.2 MB in the end (delta: -18.1 MB). Peak memory consumption was 8.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.32 ms. Allocated memory is still 96.5 MB. Free memory was 73.2 MB in the beginning and 71.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.20 ms. Allocated memory is still 96.5 MB. Free memory was 71.8 MB in the beginning and 71.0 MB in the end (delta: 795.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 284.77 ms. Allocated memory is still 96.5 MB. Free memory was 71.0 MB in the beginning and 72.1 MB in the end (delta: -1.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 4009.84 ms. Allocated memory was 96.5 MB in the beginning and 119.5 MB in the end (delta: 23.1 MB). Free memory was 72.1 MB in the beginning and 66.0 MB in the end (delta: 6.1 MB). Peak memory consumption was 32.3 MB. Max. memory is 16.1 GB. * Witness Printer took 6.56 ms. Allocated memory is still 119.5 MB. Free memory is still 66.0 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 6 terminating modules (2 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -2 * i + 5 and consists of 6 locations. One deterministic module has affine ranking function -2 * i + 7 and consists of 4 locations. One deterministic module has affine ranking function -2 * j + 19 and consists of 3 locations. One nondeterministic module has affine ranking function -2 * j + 19 and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.9s and 5 iterations. TraceHistogramMax:3. Analysis of lassos took 3.0s. Construction of modules took 0.1s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 11 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 20 states and ocurred in iteration 3. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 38 SDtfs, 38 SDslu, 13 SDs, 0 SdLazy, 59 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax180 hnf98 lsp39 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq156 hnf93 smp94 dnf100 smp100 tf113 neg100 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 22ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 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...