./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/AlternKonv.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/AlternKonv.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 9816d5cc9e8c1fba9291af90498afaa319416e5c56fa3cf3ce8da9d63d3e9939 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:23:17,136 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:23:17,140 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:23:17,212 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:23:17,212 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:23:17,218 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:23:17,221 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:23:17,226 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:23:17,229 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:23:17,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:23:17,241 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:23:17,243 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:23:17,244 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:23:17,247 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:23:17,249 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:23:17,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:23:17,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:23:17,254 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:23:17,256 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:23:17,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:23:17,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:23:17,264 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:23:17,266 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:23:17,268 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:23:17,272 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:23:17,273 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:23:17,273 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:23:17,280 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:23:17,281 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:23:17,283 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:23:17,283 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:23:17,284 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:23:17,286 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:23:17,287 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:23:17,288 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:23:17,289 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:23:17,290 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:23:17,290 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:23:17,291 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:23:17,292 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:23:17,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:23:17,297 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-28 09:23:17,362 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:23:17,362 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:23:17,363 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:23:17,363 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:23:17,364 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:23:17,365 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:23:17,365 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:23:17,365 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 09:23:17,365 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 09:23:17,366 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 09:23:17,366 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 09:23:17,366 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 09:23:17,366 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 09:23:17,367 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:23:17,367 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:23:17,367 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:23:17,367 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:23:17,368 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 09:23:17,368 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 09:23:17,368 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 09:23:17,368 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:23:17,369 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 09:23:17,369 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:23:17,369 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 09:23:17,370 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:23:17,370 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:23:17,370 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:23:17,370 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:23:17,374 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:23:17,376 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 09:23:17,376 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_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9816d5cc9e8c1fba9291af90498afaa319416e5c56fa3cf3ce8da9d63d3e9939 [2021-10-28 09:23:17,774 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:23:17,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:23:17,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:23:17,815 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:23:17,816 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:23:17,818 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/termination-restricted-15/AlternKonv.c [2021-10-28 09:23:17,919 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg/data/529fa0207/96342d53e9f548539a3fa1c1beca9b1c/FLAGcfd8f9a39 [2021-10-28 09:23:18,485 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:23:18,486 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/sv-benchmarks/c/termination-restricted-15/AlternKonv.c [2021-10-28 09:23:18,499 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg/data/529fa0207/96342d53e9f548539a3fa1c1beca9b1c/FLAGcfd8f9a39 [2021-10-28 09:23:18,832 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg/data/529fa0207/96342d53e9f548539a3fa1c1beca9b1c [2021-10-28 09:23:18,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:23:18,838 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:23:18,840 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:23:18,840 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:23:18,843 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:23:18,844 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:23:18" (1/1) ... [2021-10-28 09:23:18,846 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@142da35b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:18, skipping insertion in model container [2021-10-28 09:23:18,846 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:23:18" (1/1) ... [2021-10-28 09:23:18,856 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:23:18,872 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:23:19,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:23:19,165 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:23:19,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:23:19,203 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:23:19,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:19 WrapperNode [2021-10-28 09:23:19,205 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:23:19,206 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:23:19,207 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:23:19,207 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:23:19,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:19" (1/1) ... [2021-10-28 09:23:19,225 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:19" (1/1) ... [2021-10-28 09:23:19,247 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:23:19,249 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:23:19,249 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:23:19,249 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:23:19,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:19" (1/1) ... [2021-10-28 09:23:19,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:19" (1/1) ... [2021-10-28 09:23:19,261 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:19" (1/1) ... [2021-10-28 09:23:19,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:19" (1/1) ... [2021-10-28 09:23:19,265 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:19" (1/1) ... [2021-10-28 09:23:19,271 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:19" (1/1) ... [2021-10-28 09:23:19,272 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:19" (1/1) ... [2021-10-28 09:23:19,274 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:23:19,276 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:23:19,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:23:19,277 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:23:19,279 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:19" (1/1) ... [2021-10-28 09:23:19,288 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:23:19,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:23:19,325 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:23:19,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 09:23:19,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:23:19,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:23:19,602 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:23:19,602 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-28 09:23:19,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:23:19 BoogieIcfgContainer [2021-10-28 09:23:19,606 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:23:19,608 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 09:23:19,608 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 09:23:19,612 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 09:23:19,613 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:23:19,614 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 09:23:18" (1/3) ... [2021-10-28 09:23:19,616 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@493427d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:23:19, skipping insertion in model container [2021-10-28 09:23:19,616 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:23:19,616 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:19" (2/3) ... [2021-10-28 09:23:19,617 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@493427d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:23:19, skipping insertion in model container [2021-10-28 09:23:19,617 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:23:19,617 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:23:19" (3/3) ... [2021-10-28 09:23:19,619 INFO L389 chiAutomizerObserver]: Analyzing ICFG AlternKonv.c [2021-10-28 09:23:19,718 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 09:23:19,719 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 09:23:19,719 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 09:23:19,719 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 09:23:19,720 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 09:23:19,720 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 09:23:19,720 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 09:23:19,720 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 09:23:19,740 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 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) [2021-10-28 09:23:19,763 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 09:23:19,764 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:23:19,764 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:23:19,779 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 09:23:19,779 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 09:23:19,779 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 09:23:19,780 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 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) [2021-10-28 09:23:19,782 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 09:23:19,782 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:23:19,783 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:23:19,783 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 09:23:19,783 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 09:23:19,791 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 7#L18-2true [2021-10-28 09:23:19,792 INFO L793 eck$LassoCheckResult]: Loop: 7#L18-2true assume !!(0 != main_~i~0); 8#L10true assume !(main_~i~0 < 0);main_~i~0 := main_~i~0 - 2; 4#L18true assume main_~i~0 > 0;main_~i~0 := -1 * main_~i~0; 7#L18-2true [2021-10-28 09:23:19,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:19,810 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-10-28 09:23:19,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:23:19,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259089501] [2021-10-28 09:23:19,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:19,827 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:23:19,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:23:19,933 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:23:19,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:23:19,970 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:23:19,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:19,978 INFO L85 PathProgramCache]: Analyzing trace with hash 40236, now seen corresponding path program 1 times [2021-10-28 09:23:19,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:23:19,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568401413] [2021-10-28 09:23:19,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:19,981 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:23:20,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:23:20,009 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:23:20,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:23:20,036 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:23:20,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:20,040 INFO L85 PathProgramCache]: Analyzing trace with hash 963757, now seen corresponding path program 1 times [2021-10-28 09:23:20,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:23:20,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775561864] [2021-10-28 09:23:20,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:20,042 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:23:20,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:23:20,055 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:23:20,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:23:20,076 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:23:20,279 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:23:20,280 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:23:20,280 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:23:20,281 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:23:20,281 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:23:20,281 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:23:20,281 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:23:20,281 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:23:20,282 INFO L133 ssoRankerPreferences]: Filename of dumped script: AlternKonv.c_Iteration1_Loop [2021-10-28 09:23:20,282 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:23:20,282 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:23:20,320 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:23:20,332 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:23:20,362 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:23:20,440 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:23:20,441 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:23:20,444 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:23:20,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:23:20,447 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:23:20,454 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:23:20,454 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:23:20,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-28 09:23:20,482 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:23:20,483 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:23:20,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:23:20,534 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:23:20,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:23:20,537 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:23:20,554 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:23:20,554 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:23:20,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-28 09:23:20,577 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:23:20,578 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:23:20,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:23:20,620 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:23:20,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:23:20,622 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:23:20,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-28 09:23:20,629 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:23:20,630 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:23:20,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:23:20,705 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:23:20,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:23:20,707 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:23:20,715 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:23:20,715 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:23:20,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-28 09:23:20,889 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:23:20,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:23:20,898 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:23:20,898 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:23:20,898 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:23:20,898 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:23:20,899 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:23:20,899 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:23:20,899 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:23:20,899 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:23:20,899 INFO L133 ssoRankerPreferences]: Filename of dumped script: AlternKonv.c_Iteration1_Loop [2021-10-28 09:23:20,900 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:23:20,900 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:23:20,902 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:23:20,916 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:23:20,926 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:23:21,006 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:23:21,012 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:23:21,028 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:23:21,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:23:21,040 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:23:21,047 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 [2021-10-28 09:23:21,060 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:23:21,060 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:23:21,060 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:23:21,060 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:23:21,075 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:23:21,075 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:23:21,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-28 09:23:21,095 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:23:21,140 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2021-10-28 09:23:21,140 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:23:21,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:23:21,143 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:23:21,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-28 09:23:21,152 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 [2021-10-28 09:23:21,164 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:23:21,164 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:23:21,164 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:23:21,164 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:23:21,169 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:23:21,170 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:23:21,188 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:23:21,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-28 09:23:21,235 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:23:21,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:23:21,239 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:23:21,247 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 [2021-10-28 09:23:21,259 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:23:21,259 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:23:21,260 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:23:21,260 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:23:21,260 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:23:21,262 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:23:21,262 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:23:21,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-28 09:23:21,275 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:23:21,278 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-28 09:23:21,278 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 09:23:21,280 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:23:21,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:23:21,282 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:23:21,303 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:23:21,304 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:23:21,304 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:23:21,305 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-28 09:23:21,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-28 09:23:21,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-28 09:23:21,356 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:23:21,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:21,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:23:21,395 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:23:21,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:23:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:23:21,417 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:23:21,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:23:21,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:23:21,481 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 09:23:21,482 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 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 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-28 09:23:21,538 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 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 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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 31 states and 46 transitions. Complement of second has 6 states. [2021-10-28 09:23:21,539 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 [2021-10-28 09:23:21,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-28 09:23:21,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-10-28 09:23:21,544 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 1 letters. Loop has 3 letters. [2021-10-28 09:23:21,545 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:23:21,545 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 4 letters. Loop has 3 letters. [2021-10-28 09:23:21,546 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:23:21,546 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 1 letters. Loop has 6 letters. [2021-10-28 09:23:21,546 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:23:21,547 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 46 transitions. [2021-10-28 09:23:21,552 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 09:23:21,556 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 14 states and 21 transitions. [2021-10-28 09:23:21,557 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-10-28 09:23:21,558 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-10-28 09:23:21,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 21 transitions. [2021-10-28 09:23:21,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:23:21,559 INFO L681 BuchiCegarLoop]: Abstraction has 14 states and 21 transitions. [2021-10-28 09:23:21,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 21 transitions. [2021-10-28 09:23:21,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2021-10-28 09:23:21,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 12 states have internal predecessors, (20), 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) [2021-10-28 09:23:21,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 20 transitions. [2021-10-28 09:23:21,593 INFO L704 BuchiCegarLoop]: Abstraction has 13 states and 20 transitions. [2021-10-28 09:23:21,593 INFO L587 BuchiCegarLoop]: Abstraction has 13 states and 20 transitions. [2021-10-28 09:23:21,593 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 09:23:21,593 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 20 transitions. [2021-10-28 09:23:21,594 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 09:23:21,595 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:23:21,595 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:23:21,595 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-28 09:23:21,596 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 09:23:21,596 INFO L791 eck$LassoCheckResult]: Stem: 84#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 85#L18-2 assume !!(0 != main_~i~0); 87#L10 assume main_~i~0 < 0;main_~i~0 := 2 + main_~i~0; 89#L12 [2021-10-28 09:23:21,596 INFO L793 eck$LassoCheckResult]: Loop: 89#L12 assume !(main_~i~0 < 0); 79#L18-2 assume !!(0 != main_~i~0); 90#L10 assume main_~i~0 < 0;main_~i~0 := 2 + main_~i~0; 89#L12 [2021-10-28 09:23:21,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:21,597 INFO L85 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2021-10-28 09:23:21,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:23:21,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458358207] [2021-10-28 09:23:21,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:21,598 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:23:21,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:23:21,605 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:23:21,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:23:21,638 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:23:21,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:21,640 INFO L85 PathProgramCache]: Analyzing trace with hash 52217, now seen corresponding path program 1 times [2021-10-28 09:23:21,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:23:21,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186180398] [2021-10-28 09:23:21,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:21,641 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:23:21,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:23:21,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:23:21,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:23:21,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186180398] [2021-10-28 09:23:21,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186180398] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:23:21,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:23:21,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-28 09:23:21,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392663439] [2021-10-28 09:23:21,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-28 09:23:21,746 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:23:21,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:23:21,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:23:21,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:23:21,763 INFO L87 Difference]: Start difference. First operand 13 states and 20 transitions. cyclomatic complexity: 9 Second operand has 3 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) [2021-10-28 09:23:21,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:23:21,800 INFO L93 Difference]: Finished difference Result 15 states and 22 transitions. [2021-10-28 09:23:21,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:23:21,801 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 22 transitions. [2021-10-28 09:23:21,803 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-10-28 09:23:21,804 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 15 states and 22 transitions. [2021-10-28 09:23:21,804 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-10-28 09:23:21,804 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-10-28 09:23:21,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 22 transitions. [2021-10-28 09:23:21,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:23:21,804 INFO L681 BuchiCegarLoop]: Abstraction has 15 states and 22 transitions. [2021-10-28 09:23:21,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 22 transitions. [2021-10-28 09:23:21,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-28 09:23:21,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 14 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) [2021-10-28 09:23:21,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 22 transitions. [2021-10-28 09:23:21,807 INFO L704 BuchiCegarLoop]: Abstraction has 15 states and 22 transitions. [2021-10-28 09:23:21,807 INFO L587 BuchiCegarLoop]: Abstraction has 15 states and 22 transitions. [2021-10-28 09:23:21,808 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 09:23:21,808 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 22 transitions. [2021-10-28 09:23:21,809 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-10-28 09:23:21,809 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:23:21,809 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:23:21,809 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-28 09:23:21,809 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 09:23:21,810 INFO L791 eck$LassoCheckResult]: Stem: 118#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 119#L18-2 assume !!(0 != main_~i~0); 121#L10 assume main_~i~0 < 0;main_~i~0 := 2 + main_~i~0; 123#L12 [2021-10-28 09:23:21,810 INFO L793 eck$LassoCheckResult]: Loop: 123#L12 assume main_~i~0 < 0; 120#L13 assume !(main_~i~0 <= -2147483648);main_~i~0 := -1 * main_~i~0; 113#L18-2 assume !!(0 != main_~i~0); 126#L10 assume main_~i~0 < 0;main_~i~0 := 2 + main_~i~0; 123#L12 [2021-10-28 09:23:21,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:21,811 INFO L85 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 2 times [2021-10-28 09:23:21,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:23:21,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777610263] [2021-10-28 09:23:21,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:21,811 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:23:21,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:23:21,817 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:23:21,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:23:21,822 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:23:21,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:21,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1420681, now seen corresponding path program 1 times [2021-10-28 09:23:21,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:23:21,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960748504] [2021-10-28 09:23:21,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:21,824 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:23:21,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:23:21,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:23:21,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:23:21,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960748504] [2021-10-28 09:23:21,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960748504] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:23:21,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:23:21,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:23:21,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143003597] [2021-10-28 09:23:21,856 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:23:21,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:23:21,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:23:21,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:23:21,857 INFO L87 Difference]: Start difference. First operand 15 states and 22 transitions. cyclomatic complexity: 9 Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-28 09:23:21,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:23:21,889 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2021-10-28 09:23:21,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:23:21,889 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 27 transitions. [2021-10-28 09:23:21,891 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2021-10-28 09:23:21,892 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 20 states and 26 transitions. [2021-10-28 09:23:21,892 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2021-10-28 09:23:21,892 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-10-28 09:23:21,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 26 transitions. [2021-10-28 09:23:21,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:23:21,893 INFO L681 BuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2021-10-28 09:23:21,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 26 transitions. [2021-10-28 09:23:21,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 14. [2021-10-28 09:23:21,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 13 states have internal predecessors, (20), 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) [2021-10-28 09:23:21,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 20 transitions. [2021-10-28 09:23:21,896 INFO L704 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2021-10-28 09:23:21,896 INFO L587 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2021-10-28 09:23:21,896 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 09:23:21,896 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 20 transitions. [2021-10-28 09:23:21,897 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-10-28 09:23:21,897 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:23:21,897 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:23:21,898 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:23:21,898 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1] [2021-10-28 09:23:21,898 INFO L791 eck$LassoCheckResult]: Stem: 160#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 161#L18-2 assume !!(0 != main_~i~0); 164#L10 [2021-10-28 09:23:21,898 INFO L793 eck$LassoCheckResult]: Loop: 164#L10 assume main_~i~0 < 0;main_~i~0 := 2 + main_~i~0; 166#L12 assume !(main_~i~0 < 0); 163#L18-2 assume !!(0 != main_~i~0); 167#L10 assume !(main_~i~0 < 0);main_~i~0 := main_~i~0 - 2; 155#L18 assume main_~i~0 > 0;main_~i~0 := -1 * main_~i~0; 156#L18-2 assume !!(0 != main_~i~0); 164#L10 [2021-10-28 09:23:21,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:21,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2021-10-28 09:23:21,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:23:21,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842209855] [2021-10-28 09:23:21,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:21,900 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:23:21,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:23:21,920 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:23:21,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:23:21,924 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:23:21,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:21,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1281247432, now seen corresponding path program 1 times [2021-10-28 09:23:21,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:23:21,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676321690] [2021-10-28 09:23:21,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:21,925 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:23:21,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:23:21,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:23:21,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:23:21,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676321690] [2021-10-28 09:23:21,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676321690] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:23:21,976 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:23:21,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:23:21,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917958581] [2021-10-28 09:23:21,978 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:23:21,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:23:21,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:23:21,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:23:21,980 INFO L87 Difference]: Start difference. First operand 14 states and 20 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 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) [2021-10-28 09:23:22,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:23:22,039 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2021-10-28 09:23:22,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:23:22,040 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 32 transitions. [2021-10-28 09:23:22,046 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2021-10-28 09:23:22,049 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 24 states and 30 transitions. [2021-10-28 09:23:22,050 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2021-10-28 09:23:22,051 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2021-10-28 09:23:22,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 30 transitions. [2021-10-28 09:23:22,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:23:22,054 INFO L681 BuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2021-10-28 09:23:22,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 30 transitions. [2021-10-28 09:23:22,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 16. [2021-10-28 09:23:22,060 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) [2021-10-28 09:23:22,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2021-10-28 09:23:22,061 INFO L704 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2021-10-28 09:23:22,061 INFO L587 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2021-10-28 09:23:22,062 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-28 09:23:22,067 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 22 transitions. [2021-10-28 09:23:22,068 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-10-28 09:23:22,069 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:23:22,069 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:23:22,070 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:23:22,070 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1] [2021-10-28 09:23:22,071 INFO L791 eck$LassoCheckResult]: Stem: 204#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 205#L18-2 assume !!(0 != main_~i~0); 208#L10 [2021-10-28 09:23:22,071 INFO L793 eck$LassoCheckResult]: Loop: 208#L10 assume main_~i~0 < 0;main_~i~0 := 2 + main_~i~0; 210#L12 assume !(main_~i~0 < 0); 211#L18-2 assume !!(0 != main_~i~0); 209#L10 assume !(main_~i~0 < 0);main_~i~0 := main_~i~0 - 2; 202#L18 assume !(main_~i~0 > 0); 203#L18-2 assume !!(0 != main_~i~0); 208#L10 [2021-10-28 09:23:22,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:22,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 2 times [2021-10-28 09:23:22,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:23:22,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145189700] [2021-10-28 09:23:22,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:22,074 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:23:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:23:22,078 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:23:22,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:23:22,081 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:23:22,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:22,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1281247494, now seen corresponding path program 1 times [2021-10-28 09:23:22,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:23:22,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321644850] [2021-10-28 09:23:22,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:22,083 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:23:22,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:23:22,089 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:23:22,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:23:22,096 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:23:22,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:22,096 INFO L85 PathProgramCache]: Analyzing trace with hash 614201903, now seen corresponding path program 1 times [2021-10-28 09:23:22,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:23:22,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76341208] [2021-10-28 09:23:22,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:22,097 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:23:22,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:23:22,104 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:23:22,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:23:22,111 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:23:22,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 09:23:22 BoogieIcfgContainer [2021-10-28 09:23:22,197 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 09:23:22,198 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:23:22,198 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:23:22,198 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:23:22,199 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:23:19" (3/4) ... [2021-10-28 09:23:22,202 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-28 09:23:22,240 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:23:22,240 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:23:22,242 INFO L168 Benchmark]: Toolchain (without parser) took 3403.28 ms. Allocated memory is still 134.2 MB. Free memory was 101.5 MB in the beginning and 88.8 MB in the end (delta: 12.7 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:23:22,243 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 88.1 MB. Free memory is still 42.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:23:22,243 INFO L168 Benchmark]: CACSL2BoogieTranslator took 365.28 ms. Allocated memory is still 134.2 MB. Free memory was 101.5 MB in the beginning and 111.5 MB in the end (delta: -10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:23:22,244 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.25 ms. Allocated memory is still 134.2 MB. Free memory was 111.5 MB in the beginning and 110.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:23:22,244 INFO L168 Benchmark]: Boogie Preprocessor took 25.67 ms. Allocated memory is still 134.2 MB. Free memory was 110.2 MB in the beginning and 109.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:23:22,245 INFO L168 Benchmark]: RCFGBuilder took 330.58 ms. Allocated memory is still 134.2 MB. Free memory was 109.1 MB in the beginning and 101.1 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:23:22,245 INFO L168 Benchmark]: BuchiAutomizer took 2589.60 ms. Allocated memory is still 134.2 MB. Free memory was 101.1 MB in the beginning and 90.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:23:22,246 INFO L168 Benchmark]: Witness Printer took 42.19 ms. Allocated memory is still 134.2 MB. Free memory was 90.3 MB in the beginning and 88.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:23:22,249 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 88.1 MB. Free memory is still 42.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 365.28 ms. Allocated memory is still 134.2 MB. Free memory was 101.5 MB in the beginning and 111.5 MB in the end (delta: -10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.25 ms. Allocated memory is still 134.2 MB. Free memory was 111.5 MB in the beginning and 110.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.67 ms. Allocated memory is still 134.2 MB. Free memory was 110.2 MB in the beginning and 109.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 330.58 ms. Allocated memory is still 134.2 MB. Free memory was 109.1 MB in the beginning and 101.1 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2589.60 ms. Allocated memory is still 134.2 MB. Free memory was 101.1 MB in the beginning and 90.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. * Witness Printer took 42.19 ms. Allocated memory is still 134.2 MB. Free memory was 90.3 MB in the beginning and 88.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. 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 (3 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function i and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 4 locations. The remainder module has 16 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.4s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 15 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 16 states and ocurred in iteration 4. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 27 SDtfs, 9 SDslu, 6 SDs, 0 SdLazy, 73 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont1 unkn0 SFLI3 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax200 hnf91 lsp45 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 67ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 10]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3b44f59e=0, \result=0, i=-1} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 10]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() [L9] COND TRUE i != 0 Loop: [L10] COND TRUE i < 0 [L11] i = i+2 [L12] COND FALSE !(i < 0) [L9] COND TRUE i != 0 [L10] COND FALSE !(i < 0) [L17] i = i-2 [L18] COND FALSE !(i > 0) [L9] COND TRUE i != 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-28 09:23:22,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6364071d-31be-4563-865a-f09579df6a95/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...