./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-invgen/fragtest_simple.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-invgen/fragtest_simple.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5fcab3f6230f09fb280cb6a6471af8fd585365e7 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 01:21:19,042 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 01:21:19,044 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 01:21:19,100 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 01:21:19,103 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 01:21:19,105 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 01:21:19,109 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 01:21:19,117 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 01:21:19,122 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 01:21:19,124 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 01:21:19,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 01:21:19,130 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 01:21:19,131 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 01:21:19,134 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 01:21:19,136 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 01:21:19,138 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 01:21:19,140 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 01:21:19,141 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 01:21:19,144 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 01:21:19,151 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 01:21:19,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 01:21:19,158 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 01:21:19,162 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 01:21:19,165 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 01:21:19,173 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 01:21:19,177 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 01:21:19,178 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 01:21:19,181 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 01:21:19,182 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 01:21:19,184 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 01:21:19,185 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 01:21:19,187 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 01:21:19,190 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 01:21:19,191 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 01:21:19,194 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 01:21:19,194 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 01:21:19,195 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 01:21:19,196 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 01:21:19,196 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 01:21:19,197 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 01:21:19,198 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 01:21:19,199 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-13 01:21:19,262 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 01:21:19,269 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 01:21:19,270 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 01:21:19,270 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 01:21:19,272 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 01:21:19,273 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 01:21:19,273 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 01:21:19,273 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-13 01:21:19,274 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-13 01:21:19,274 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-13 01:21:19,276 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-13 01:21:19,276 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-13 01:21:19,276 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-13 01:21:19,277 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 01:21:19,277 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 01:21:19,277 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 01:21:19,277 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 01:21:19,278 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 01:21:19,278 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 01:21:19,278 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-13 01:21:19,279 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-13 01:21:19,279 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-13 01:21:19,279 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 01:21:19,279 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 01:21:19,280 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-13 01:21:19,280 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 01:21:19,283 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-13 01:21:19,283 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 01:21:19,283 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 01:21:19,284 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 01:21:19,284 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 01:21:19,285 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 01:21:19,286 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-13 01:21:19,287 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_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fcab3f6230f09fb280cb6a6471af8fd585365e7 [2021-10-13 01:21:19,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 01:21:19,673 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 01:21:19,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 01:21:19,679 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 01:21:19,680 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 01:21:19,681 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/loop-invgen/fragtest_simple.i [2021-10-13 01:21:19,770 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/data/08781a49b/d11ba9d5fe4d4a388395f12398a79e00/FLAGcade9c205 [2021-10-13 01:21:20,396 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 01:21:20,397 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/sv-benchmarks/c/loop-invgen/fragtest_simple.i [2021-10-13 01:21:20,405 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/data/08781a49b/d11ba9d5fe4d4a388395f12398a79e00/FLAGcade9c205 [2021-10-13 01:21:20,777 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/data/08781a49b/d11ba9d5fe4d4a388395f12398a79e00 [2021-10-13 01:21:20,781 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 01:21:20,783 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 01:21:20,785 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 01:21:20,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 01:21:20,790 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 01:21:20,791 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:21:20" (1/1) ... [2021-10-13 01:21:20,793 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ae7016d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:21:20, skipping insertion in model container [2021-10-13 01:21:20,793 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:21:20" (1/1) ... [2021-10-13 01:21:20,803 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 01:21:20,824 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:21:21,059 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/sv-benchmarks/c/loop-invgen/fragtest_simple.i[893,906] [2021-10-13 01:21:21,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:21:21,085 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 01:21:21,101 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/sv-benchmarks/c/loop-invgen/fragtest_simple.i[893,906] [2021-10-13 01:21:21,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:21:21,124 INFO L208 MainTranslator]: Completed translation [2021-10-13 01:21:21,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:21:21 WrapperNode [2021-10-13 01:21:21,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 01:21:21,126 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 01:21:21,127 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 01:21:21,127 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 01:21:21,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:21:21" (1/1) ... [2021-10-13 01:21:21,147 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:21:21" (1/1) ... [2021-10-13 01:21:21,171 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 01:21:21,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 01:21:21,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 01:21:21,173 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 01:21:21,183 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:21:21" (1/1) ... [2021-10-13 01:21:21,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:21:21" (1/1) ... [2021-10-13 01:21:21,185 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:21:21" (1/1) ... [2021-10-13 01:21:21,186 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:21:21" (1/1) ... [2021-10-13 01:21:21,190 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:21:21" (1/1) ... [2021-10-13 01:21:21,196 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:21:21" (1/1) ... [2021-10-13 01:21:21,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:21:21" (1/1) ... [2021-10-13 01:21:21,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 01:21:21,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 01:21:21,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 01:21:21,216 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 01:21:21,218 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:21:21" (1/1) ... [2021-10-13 01:21:21,227 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:21:21,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:21:21,257 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:21:21,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-13 01:21:21,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 01:21:21,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 01:21:21,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 01:21:21,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 01:21:21,543 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 01:21:21,543 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-13 01:21:21,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:21:21 BoogieIcfgContainer [2021-10-13 01:21:21,546 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 01:21:21,547 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-13 01:21:21,547 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-13 01:21:21,552 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-13 01:21:21,553 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 01:21:21,553 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.10 01:21:20" (1/3) ... [2021-10-13 01:21:21,555 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@175c5f6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 01:21:21, skipping insertion in model container [2021-10-13 01:21:21,556 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 01:21:21,556 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:21:21" (2/3) ... [2021-10-13 01:21:21,557 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@175c5f6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 01:21:21, skipping insertion in model container [2021-10-13 01:21:21,557 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 01:21:21,557 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:21:21" (3/3) ... [2021-10-13 01:21:21,559 INFO L389 chiAutomizerObserver]: Analyzing ICFG fragtest_simple.i [2021-10-13 01:21:21,623 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-13 01:21:21,623 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-13 01:21:21,623 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-13 01:21:21,623 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-13 01:21:21,624 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-13 01:21:21,624 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-13 01:21:21,624 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-13 01:21:21,624 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-13 01:21:21,644 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 16 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:21:21,669 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 7 [2021-10-13 01:21:21,669 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:21:21,669 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:21:21,677 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-13 01:21:21,677 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-13 01:21:21,677 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-13 01:21:21,678 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 16 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:21:21,681 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 7 [2021-10-13 01:21:21,682 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:21:21,682 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:21:21,682 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-13 01:21:21,682 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-13 01:21:21,691 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 7#L-1true havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~i~0, main_~pvlen~0, main_~tmp___1~0, main_~k~0, main_~n~0, main_~j~0;havoc main_~i~0;havoc main_~pvlen~0;havoc main_~tmp___1~0;main_~k~0 := 0;havoc main_~n~0;main_~i~0 := 0;main_~pvlen~0 := main_#t~nondet3;havoc main_#t~nondet3; 16#L31-2true [2021-10-13 01:21:21,692 INFO L793 eck$LassoCheckResult]: Loop: 16#L31-2true assume !!(0 != main_#t~nondet4 && main_~i~0 <= 1000000);havoc main_#t~nondet4;main_~i~0 := 1 + main_~i~0; 16#L31-2true [2021-10-13 01:21:21,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:21:21,700 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-10-13 01:21:21,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:21:21,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350171474] [2021-10-13 01:21:21,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:21:21,715 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:21:21,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:21:21,963 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:21:21,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:21:22,021 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:21:22,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:21:22,029 INFO L82 PathProgramCache]: Analyzing trace with hash 42, now seen corresponding path program 1 times [2021-10-13 01:21:22,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:21:22,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119629519] [2021-10-13 01:21:22,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:21:22,031 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:21:22,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:21:22,040 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:21:22,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:21:22,048 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:21:22,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:21:22,051 INFO L82 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2021-10-13 01:21:22,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:21:22,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224827747] [2021-10-13 01:21:22,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:21:22,053 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:21:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:21:22,077 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:21:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:21:22,102 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:21:22,182 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:21:22,183 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:21:22,183 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:21:22,183 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:21:22,183 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 01:21:22,184 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:21:22,184 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:21:22,184 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:21:22,184 INFO L133 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration1_Loop [2021-10-13 01:21:22,185 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:21:22,185 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:21:22,207 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:22,222 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:22,275 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:21:22,276 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 01:21:22,279 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:21:22,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:21:22,282 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:21:22,293 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:21:22,293 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:21:22,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-13 01:21:22,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-13 01:21:22,357 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:21:22,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:21:22,359 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:21:22,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-13 01:21:22,361 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 01:21:22,361 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:21:22,423 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 01:21:22,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-13 01:21:22,436 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:21:22,436 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:21:22,436 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:21:22,436 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:21:22,436 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 01:21:22,436 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:21:22,437 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:21:22,437 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:21:22,437 INFO L133 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration1_Loop [2021-10-13 01:21:22,437 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:21:22,437 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:21:22,439 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:22,448 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:22,495 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:21:22,500 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 01:21:22,502 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:21:22,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:21:22,503 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:21:22,508 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:21:22,519 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:21:22,519 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:21:22,520 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:21:22,520 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:21:22,520 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:21:22,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-13 01:21:22,524 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:21:22,524 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:21:22,537 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 01:21:22,546 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-13 01:21:22,546 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-13 01:21:22,548 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:21:22,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:21:22,552 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:21:22,555 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 01:21:22,555 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 01:21:22,556 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 01:21:22,557 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 2000001 Supporting invariants [] [2021-10-13 01:21:22,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-13 01:21:22,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-13 01:21:22,587 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 01:21:22,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:21:22,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:21:22,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:21:22,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:21:22,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:21:22,662 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 01:21:22,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:21:22,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:21:22,683 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 [2021-10-13 01:21:22,685 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 16 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:21:22,741 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 16 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 32 states and 50 transitions. Complement of second has 6 states. [2021-10-13 01:21:22,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-13 01:21:22,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:21:22,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 26 transitions. [2021-10-13 01:21:22,747 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 2 letters. Loop has 1 letters. [2021-10-13 01:21:22,747 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:21:22,748 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 3 letters. Loop has 1 letters. [2021-10-13 01:21:22,748 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:21:22,748 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 2 letters. Loop has 2 letters. [2021-10-13 01:21:22,748 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:21:22,749 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 50 transitions. [2021-10-13 01:21:22,754 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-10-13 01:21:22,759 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 13 states and 19 transitions. [2021-10-13 01:21:22,760 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-10-13 01:21:22,760 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2021-10-13 01:21:22,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 19 transitions. [2021-10-13 01:21:22,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 01:21:22,762 INFO L681 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2021-10-13 01:21:22,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 19 transitions. [2021-10-13 01:21:22,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-13 01:21:22,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:21:22,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 19 transitions. [2021-10-13 01:21:22,815 INFO L704 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2021-10-13 01:21:22,815 INFO L587 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2021-10-13 01:21:22,816 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-13 01:21:22,816 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 19 transitions. [2021-10-13 01:21:22,817 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-10-13 01:21:22,817 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:21:22,818 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:21:22,818 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-10-13 01:21:22,818 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-13 01:21:22,819 INFO L791 eck$LassoCheckResult]: Stem: 84#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 85#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~i~0, main_~pvlen~0, main_~tmp___1~0, main_~k~0, main_~n~0, main_~j~0;havoc main_~i~0;havoc main_~pvlen~0;havoc main_~tmp___1~0;main_~k~0 := 0;havoc main_~n~0;main_~i~0 := 0;main_~pvlen~0 := main_#t~nondet3;havoc main_#t~nondet3; 91#L31-2 assume !(0 != main_#t~nondet4 && main_~i~0 <= 1000000);havoc main_#t~nondet4; 92#L31-3 assume !(main_~i~0 > main_~pvlen~0); 89#L34-1 main_~i~0 := 0; 90#L38-2 [2021-10-13 01:21:22,819 INFO L793 eck$LassoCheckResult]: Loop: 90#L38-2 assume !!(0 != main_#t~nondet5 && main_~i~0 <= 1000000);havoc main_#t~nondet5;main_~tmp___1~0 := main_~i~0;main_~i~0 := 1 + main_~i~0;main_~k~0 := 1 + main_~k~0; 90#L38-2 [2021-10-13 01:21:22,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:21:22,821 INFO L82 PathProgramCache]: Analyzing trace with hash 28697992, now seen corresponding path program 1 times [2021-10-13 01:21:22,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:21:22,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458190248] [2021-10-13 01:21:22,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:21:22,848 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:21:22,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:21:22,870 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:21:22,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-13 01:21:22,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:21:22,912 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:21:22,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:21:22,913 INFO L82 PathProgramCache]: Analyzing trace with hash 61, now seen corresponding path program 1 times [2021-10-13 01:21:22,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:21:22,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525447369] [2021-10-13 01:21:22,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:21:22,914 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:21:22,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:21:22,921 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:21:22,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:21:22,945 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:21:22,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:21:22,946 INFO L82 PathProgramCache]: Analyzing trace with hash 889637782, now seen corresponding path program 1 times [2021-10-13 01:21:22,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:21:22,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122325092] [2021-10-13 01:21:22,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:21:22,947 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:21:22,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:21:22,981 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:21:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:21:23,029 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:21:23,112 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:21:23,113 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:21:23,113 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:21:23,113 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:21:23,113 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 01:21:23,113 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:21:23,115 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:21:23,115 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:21:23,115 INFO L133 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration2_Loop [2021-10-13 01:21:23,115 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:21:23,115 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:21:23,119 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:23,129 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:23,143 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:23,207 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:21:23,207 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 01:21:23,207 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:21:23,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:21:23,210 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:21:23,220 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:21:23,221 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:21:23,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-13 01:21:23,260 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 01:21:23,261 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet5=4} Honda state: {ULTIMATE.start_main_#t~nondet5=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 01:21:23,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-13 01:21:23,294 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:21:23,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:21:23,296 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:21:23,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-13 01:21:23,299 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:21:23,308 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:21:23,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-13 01:21:23,382 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:21:23,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:21:23,384 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:21:23,395 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 01:21:23,395 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:21:23,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-13 01:21:23,467 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 01:21:23,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-13 01:21:23,474 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:21:23,474 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:21:23,475 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:21:23,475 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:21:23,475 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 01:21:23,475 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:21:23,475 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:21:23,475 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:21:23,475 INFO L133 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration2_Loop [2021-10-13 01:21:23,475 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:21:23,475 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:21:23,476 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:23,484 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:23,495 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:23,567 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:21:23,567 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 01:21:23,568 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:21:23,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:21:23,571 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:21:23,574 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:21:23,586 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:21:23,586 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:21:23,587 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:21:23,587 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-13 01:21:23,587 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:21:23,590 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-13 01:21:23,590 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:21:23,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-13 01:21:23,611 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:21:23,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-13 01:21:23,653 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:21:23,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:21:23,655 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:21:23,669 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:21:23,680 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:21:23,680 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:21:23,680 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:21:23,680 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:21:23,680 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:21:23,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-13 01:21:23,683 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:21:23,683 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:21:23,692 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 01:21:23,700 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-13 01:21:23,700 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-13 01:21:23,700 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:21:23,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:21:23,702 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:21:23,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-13 01:21:23,705 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 01:21:23,706 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 01:21:23,706 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 01:21:23,706 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 2000001 Supporting invariants [] [2021-10-13 01:21:23,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-13 01:21:23,738 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 01:21:23,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:21:23,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:21:23,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:21:23,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:21:23,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:21:23,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 01:21:23,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:21:23,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:21:23,827 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 [2021-10-13 01:21:23,828 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 19 transitions. cyclomatic complexity: 9 Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:21:23,862 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 19 transitions. cyclomatic complexity: 9. Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 29 states and 40 transitions. Complement of second has 6 states. [2021-10-13 01:21:23,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-13 01:21:23,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:21:23,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2021-10-13 01:21:23,867 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 5 letters. Loop has 1 letters. [2021-10-13 01:21:23,869 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:21:23,869 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 6 letters. Loop has 1 letters. [2021-10-13 01:21:23,869 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:21:23,870 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 5 letters. Loop has 2 letters. [2021-10-13 01:21:23,870 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:21:23,870 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 40 transitions. [2021-10-13 01:21:23,879 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-13 01:21:23,881 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 17 states and 23 transitions. [2021-10-13 01:21:23,882 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2021-10-13 01:21:23,882 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2021-10-13 01:21:23,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 23 transitions. [2021-10-13 01:21:23,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 01:21:23,883 INFO L681 BuchiCegarLoop]: Abstraction has 17 states and 23 transitions. [2021-10-13 01:21:23,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 23 transitions. [2021-10-13 01:21:23,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-10-13 01:21:23,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.375) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:21:23,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2021-10-13 01:21:23,888 INFO L704 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2021-10-13 01:21:23,889 INFO L587 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2021-10-13 01:21:23,889 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-13 01:21:23,889 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 22 transitions. [2021-10-13 01:21:23,892 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-13 01:21:23,892 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:21:23,892 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:21:23,894 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:21:23,895 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-13 01:21:23,896 INFO L791 eck$LassoCheckResult]: Stem: 164#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 165#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~i~0, main_~pvlen~0, main_~tmp___1~0, main_~k~0, main_~n~0, main_~j~0;havoc main_~i~0;havoc main_~pvlen~0;havoc main_~tmp___1~0;main_~k~0 := 0;havoc main_~n~0;main_~i~0 := 0;main_~pvlen~0 := main_#t~nondet3;havoc main_#t~nondet3; 173#L31-2 assume !(0 != main_#t~nondet4 && main_~i~0 <= 1000000);havoc main_#t~nondet4; 174#L31-3 assume !(main_~i~0 > main_~pvlen~0); 169#L34-1 main_~i~0 := 0; 170#L38-2 assume !(0 != main_#t~nondet5 && main_~i~0 <= 1000000);havoc main_#t~nondet5; 167#L38-3 main_~j~0 := 0;main_~n~0 := main_~i~0; 168#L45-2 assume !false;__VERIFIER_assert_#in~cond := (if main_~k~0 >= 0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 162#L18 assume !(0 == __VERIFIER_assert_~cond); 163#L18-2 [2021-10-13 01:21:23,896 INFO L793 eck$LassoCheckResult]: Loop: 163#L18-2 main_~k~0 := main_~k~0 - 1;main_~i~0 := main_~i~0 - 1;main_~j~0 := 1 + main_~j~0; 166#L50 assume !(main_~j~0 >= main_~n~0); 171#L45-2 assume !false;__VERIFIER_assert_#in~cond := (if main_~k~0 >= 0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 172#L18 assume !(0 == __VERIFIER_assert_~cond); 163#L18-2 [2021-10-13 01:21:23,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:21:23,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1044045579, now seen corresponding path program 1 times [2021-10-13 01:21:23,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:21:23,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470401743] [2021-10-13 01:21:23,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:21:23,899 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:21:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:21:23,945 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:21:23,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:21:23,983 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:21:23,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:21:23,986 INFO L82 PathProgramCache]: Analyzing trace with hash 2559565, now seen corresponding path program 1 times [2021-10-13 01:21:23,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:21:23,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974093688] [2021-10-13 01:21:23,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:21:23,988 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:21:24,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:21:24,006 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:21:24,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:21:24,016 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:21:24,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:21:24,017 INFO L82 PathProgramCache]: Analyzing trace with hash 667587905, now seen corresponding path program 1 times [2021-10-13 01:21:24,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:21:24,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580583363] [2021-10-13 01:21:24,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:21:24,018 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:21:24,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:21:24,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:21:24,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:21:24,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580583363] [2021-10-13 01:21:24,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580583363] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:21:24,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:21:24,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 01:21:24,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497866046] [2021-10-13 01:21:24,260 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:21:24,260 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:21:24,260 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:21:24,261 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:21:24,261 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 01:21:24,261 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:21:24,261 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:21:24,261 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:21:24,261 INFO L133 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration3_Loop [2021-10-13 01:21:24,262 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:21:24,262 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:21:24,268 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:24,276 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:24,281 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:24,294 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:24,379 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:21:24,379 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 01:21:24,380 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:21:24,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:21:24,383 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:21:24,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-13 01:21:24,404 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:21:24,405 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:21:24,447 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2021-10-13 01:21:24,447 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:21:24,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:21:24,449 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:21:24,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-13 01:21:24,451 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 01:21:24,451 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:21:24,925 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 01:21:24,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-13 01:21:24,928 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:21:24,928 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:21:24,929 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:21:24,929 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:21:24,929 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 01:21:24,929 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:21:24,929 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:21:24,929 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:21:24,929 INFO L133 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration3_Loop [2021-10-13 01:21:24,929 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:21:24,929 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:21:24,931 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:24,948 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:24,956 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:24,960 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:25,046 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:21:25,046 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 01:21:25,049 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:21:25,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:21:25,051 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:21:25,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-13 01:21:25,060 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:21:25,073 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:21:25,073 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:21:25,073 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:21:25,073 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:21:25,073 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:21:25,075 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:21:25,075 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:21:25,085 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 01:21:25,090 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-13 01:21:25,090 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-13 01:21:25,090 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:21:25,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:21:25,095 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:21:25,097 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 01:21:25,097 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 01:21:25,098 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 01:21:25,098 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2021-10-13 01:21:25,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-13 01:21:25,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-13 01:21:25,144 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 01:21:25,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:21:25,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:21:25,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:21:25,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:21:25,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:21:25,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 01:21:25,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:21:25,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:21:25,357 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 [2021-10-13 01:21:25,358 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 22 transitions. cyclomatic complexity: 9 Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:21:25,386 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 22 transitions. cyclomatic complexity: 9. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 27 states and 34 transitions. Complement of second has 7 states. [2021-10-13 01:21:25,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-13 01:21:25,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:21:25,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 25 transitions. [2021-10-13 01:21:25,388 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 9 letters. Loop has 4 letters. [2021-10-13 01:21:25,388 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:21:25,389 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 13 letters. Loop has 4 letters. [2021-10-13 01:21:25,389 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:21:25,389 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 9 letters. Loop has 8 letters. [2021-10-13 01:21:25,391 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:21:25,391 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 34 transitions. [2021-10-13 01:21:25,401 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-13 01:21:25,401 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 0 states and 0 transitions. [2021-10-13 01:21:25,402 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-13 01:21:25,402 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-13 01:21:25,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-13 01:21:25,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 01:21:25,402 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 01:21:25,403 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 01:21:25,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:21:25,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 01:21:25,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:21:25,409 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:21:25,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:21:25,413 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-10-13 01:21:25,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 01:21:25,414 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-10-13 01:21:25,414 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-13 01:21:25,415 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 01:21:25,415 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-13 01:21:25,416 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-13 01:21:25,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-13 01:21:25,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 01:21:25,416 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 01:21:25,417 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 01:21:25,417 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 01:21:25,417 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-13 01:21:25,417 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-13 01:21:25,419 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-13 01:21:25,419 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-13 01:21:25,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.10 01:21:25 BoogieIcfgContainer [2021-10-13 01:21:25,429 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-13 01:21:25,430 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 01:21:25,430 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 01:21:25,431 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 01:21:25,432 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:21:21" (3/4) ... [2021-10-13 01:21:25,436 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 01:21:25,436 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 01:21:25,439 INFO L168 Benchmark]: Toolchain (without parser) took 4654.27 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 65.4 MB in the beginning and 45.8 MB in the end (delta: 19.6 MB). Peak memory consumption was 42.8 MB. Max. memory is 16.1 GB. [2021-10-13 01:21:25,439 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 107.0 MB. Free memory is still 81.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:21:25,440 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.26 ms. Allocated memory is still 107.0 MB. Free memory was 65.2 MB in the beginning and 81.6 MB in the end (delta: -16.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 01:21:25,442 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.73 ms. Allocated memory is still 107.0 MB. Free memory was 81.6 MB in the beginning and 80.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:21:25,449 INFO L168 Benchmark]: Boogie Preprocessor took 42.50 ms. Allocated memory is still 107.0 MB. Free memory was 80.4 MB in the beginning and 79.5 MB in the end (delta: 975.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:21:25,450 INFO L168 Benchmark]: RCFGBuilder took 330.54 ms. Allocated memory is still 107.0 MB. Free memory was 79.5 MB in the beginning and 70.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 01:21:25,453 INFO L168 Benchmark]: BuchiAutomizer took 3882.05 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 69.5 MB in the beginning and 45.8 MB in the end (delta: 23.7 MB). Peak memory consumption was 49.3 MB. Max. memory is 16.1 GB. [2021-10-13 01:21:25,454 INFO L168 Benchmark]: Witness Printer took 6.01 ms. Allocated memory is still 130.0 MB. Free memory is still 45.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:21:25,464 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 107.0 MB. Free memory is still 81.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 340.26 ms. Allocated memory is still 107.0 MB. Free memory was 65.2 MB in the beginning and 81.6 MB in the end (delta: -16.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.73 ms. Allocated memory is still 107.0 MB. Free memory was 81.6 MB in the beginning and 80.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.50 ms. Allocated memory is still 107.0 MB. Free memory was 80.4 MB in the beginning and 79.5 MB in the end (delta: 975.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 330.54 ms. Allocated memory is still 107.0 MB. Free memory was 79.5 MB in the beginning and 70.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 3882.05 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 69.5 MB in the beginning and 45.8 MB in the end (delta: 23.7 MB). Peak memory consumption was 49.3 MB. Max. memory is 16.1 GB. * Witness Printer took 6.01 ms. Allocated memory is still 130.0 MB. Free memory is still 45.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * i + 2000001 and consists of 4 locations. One deterministic module has affine ranking function -2 * i + 2000001 and consists of 4 locations. One deterministic module has affine ranking function n + -1 * j and consists of 5 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.8s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 3.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 0. Automata minimization 21.9ms AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 16 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 28 SDtfs, 29 SDslu, 9 SDs, 0 SdLazy, 20 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 26.6ms Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax100 hnf100 lsp55 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq165 hnf92 smp100 dnf100 smp100 tf112 neg100 sie103 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 43ms VariablesStem: 0 VariablesLoop: 1 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 0 MotzkinApplications: 4 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.9s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-13 01:21:25,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-13 01:21:25,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-13 01:21:25,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa96c475-217c-4bd0-a5da-6226aeaee45e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...