./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/Ex06.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_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/Ex06.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD --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 7e66e5d0ac00f8e474147a7ee8b0260ea4ced8ccde7952ff642446632cdde4c3 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 23:55:20,064 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:55:20,068 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:55:20,140 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:55:20,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:55:20,142 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:55:20,144 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:55:20,147 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:55:20,150 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:55:20,152 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:55:20,154 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:55:20,156 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:55:20,157 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:55:20,158 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:55:20,161 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:55:20,163 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:55:20,165 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:55:20,167 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:55:20,170 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:55:20,173 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:55:20,176 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:55:20,178 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:55:20,180 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:55:20,181 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:55:20,186 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:55:20,187 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:55:20,187 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:55:20,188 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:55:20,189 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:55:20,191 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:55:20,192 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:55:20,193 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:55:20,194 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:55:20,196 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:55:20,197 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:55:20,198 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:55:20,199 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:55:20,200 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:55:20,200 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:55:20,202 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:55:20,203 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:55:20,205 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-28 23:55:20,249 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:55:20,250 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:55:20,251 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:55:20,251 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:55:20,252 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:55:20,253 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:55:20,253 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:55:20,253 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 23:55:20,253 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 23:55:20,254 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 23:55:20,255 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 23:55:20,255 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 23:55:20,255 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 23:55:20,256 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:55:20,256 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:55:20,256 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:55:20,256 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:55:20,257 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 23:55:20,257 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 23:55:20,257 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 23:55:20,257 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:55:20,258 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 23:55:20,258 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:55:20,258 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 23:55:20,258 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:55:20,259 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:55:20,259 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:55:20,259 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:55:20,259 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:55:20,261 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 23:55:20,261 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_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e66e5d0ac00f8e474147a7ee8b0260ea4ced8ccde7952ff642446632cdde4c3 [2021-10-28 23:55:20,571 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:55:20,607 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:55:20,611 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:55:20,613 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:55:20,614 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:55:20,615 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/termination-restricted-15/Ex06.c [2021-10-28 23:55:20,710 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/data/332805c7c/ce4f9974545446198f425947e2e2c321/FLAGe9af5c6a0 [2021-10-28 23:55:21,239 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:55:21,240 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/sv-benchmarks/c/termination-restricted-15/Ex06.c [2021-10-28 23:55:21,262 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/data/332805c7c/ce4f9974545446198f425947e2e2c321/FLAGe9af5c6a0 [2021-10-28 23:55:21,626 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/data/332805c7c/ce4f9974545446198f425947e2e2c321 [2021-10-28 23:55:21,629 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:55:21,631 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:55:21,633 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:55:21,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:55:21,639 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:55:21,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:55:21" (1/1) ... [2021-10-28 23:55:21,642 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ea5f5e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:21, skipping insertion in model container [2021-10-28 23:55:21,642 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:55:21" (1/1) ... [2021-10-28 23:55:21,652 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:55:21,666 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:55:21,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:55:21,872 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:55:21,888 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:55:21,907 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:55:21,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:21 WrapperNode [2021-10-28 23:55:21,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:55:21,909 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:55:21,910 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:55:21,911 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:55:21,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:21" (1/1) ... [2021-10-28 23:55:21,932 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:21" (1/1) ... [2021-10-28 23:55:21,957 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:55:21,960 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:55:21,960 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:55:21,960 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:55:21,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:21" (1/1) ... [2021-10-28 23:55:21,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:21" (1/1) ... [2021-10-28 23:55:21,982 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:21" (1/1) ... [2021-10-28 23:55:21,982 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:21" (1/1) ... [2021-10-28 23:55:21,986 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:21" (1/1) ... [2021-10-28 23:55:21,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:21" (1/1) ... [2021-10-28 23:55:21,993 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:21" (1/1) ... [2021-10-28 23:55:21,995 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:55:21,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:55:21,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:55:21,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:55:22,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:21" (1/1) ... [2021-10-28 23:55:22,013 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:22,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:22,045 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:22,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 23:55:22,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:55:22,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:55:22,312 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:55:22,314 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-28 23:55:22,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:55:22 BoogieIcfgContainer [2021-10-28 23:55:22,318 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:55:22,319 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 23:55:22,319 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 23:55:22,324 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 23:55:22,325 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:55:22,326 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 11:55:21" (1/3) ... [2021-10-28 23:55:22,330 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5e3e23dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:55:22, skipping insertion in model container [2021-10-28 23:55:22,331 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:55:22,331 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:21" (2/3) ... [2021-10-28 23:55:22,332 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5e3e23dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:55:22, skipping insertion in model container [2021-10-28 23:55:22,332 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:55:22,332 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:55:22" (3/3) ... [2021-10-28 23:55:22,334 INFO L389 chiAutomizerObserver]: Analyzing ICFG Ex06.c [2021-10-28 23:55:22,409 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 23:55:22,410 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 23:55:22,410 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 23:55:22,410 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 23:55:22,410 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 23:55:22,411 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 23:55:22,411 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 23:55:22,411 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 23:55:22,430 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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 23:55:22,454 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 23:55:22,454 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:55:22,454 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:55:22,461 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 23:55:22,462 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 23:55:22,462 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 23:55:22,462 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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 23:55:22,464 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 23:55:22,464 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:55:22,464 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:55:22,465 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 23:55:22,465 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 23:55:22,471 INFO L791 eck$LassoCheckResult]: Stem: 7#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; 4#L13-1true [2021-10-28 23:55:22,471 INFO L793 eck$LassoCheckResult]: Loop: 4#L13-1true assume !!(main_~i~0 >= -5 && main_~i~0 <= 5); 8#L10true assume main_~i~0 > 0;main_~i~0 := main_~i~0 - 1; 6#L10-2true assume main_~i~0 < 0;main_~i~0 := 1 + main_~i~0; 4#L13-1true [2021-10-28 23:55:22,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:22,478 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-10-28 23:55:22,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:55:22,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144850050] [2021-10-28 23:55:22,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:22,490 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:55:22,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:55:22,579 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:55:22,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:55:22,601 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:55:22,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:22,605 INFO L85 PathProgramCache]: Analyzing trace with hash 39823, now seen corresponding path program 1 times [2021-10-28 23:55:22,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:55:22,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551918634] [2021-10-28 23:55:22,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:22,607 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:55:22,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:22,688 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 23:55:22,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:55:22,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551918634] [2021-10-28 23:55:22,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551918634] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:55:22,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:55:22,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:55:22,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348865386] [2021-10-28 23:55:22,710 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:55:22,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:55:22,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:55:22,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:55:22,763 INFO L87 Difference]: Start difference. First operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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 3 states, 2 states have (on average 1.5) internal successors, (3), 3 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 23:55:22,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:55:22,844 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2021-10-28 23:55:22,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:55:22,846 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 18 transitions. [2021-10-28 23:55:22,848 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-10-28 23:55:22,852 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 7 states and 10 transitions. [2021-10-28 23:55:22,853 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-10-28 23:55:22,854 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-10-28 23:55:22,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2021-10-28 23:55:22,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:55:22,861 INFO L681 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-10-28 23:55:22,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2021-10-28 23:55:22,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-28 23:55:22,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 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 23:55:22,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2021-10-28 23:55:22,935 INFO L704 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-10-28 23:55:22,935 INFO L587 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-10-28 23:55:22,935 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 23:55:22,935 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2021-10-28 23:55:22,936 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-10-28 23:55:22,936 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:55:22,936 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:55:22,936 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 23:55:22,937 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 23:55:22,937 INFO L791 eck$LassoCheckResult]: Stem: 36#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 32#L13-1 [2021-10-28 23:55:22,937 INFO L793 eck$LassoCheckResult]: Loop: 32#L13-1 assume !!(main_~i~0 >= -5 && main_~i~0 <= 5); 33#L10 assume !(main_~i~0 > 0); 37#L10-2 assume main_~i~0 < 0;main_~i~0 := 1 + main_~i~0; 32#L13-1 [2021-10-28 23:55:22,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:22,938 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2021-10-28 23:55:22,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:55:22,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468866976] [2021-10-28 23:55:22,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:22,939 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:55:22,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:55:22,954 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:55:22,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:55:22,958 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:55:22,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:22,959 INFO L85 PathProgramCache]: Analyzing trace with hash 39885, now seen corresponding path program 1 times [2021-10-28 23:55:22,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:55:22,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433044070] [2021-10-28 23:55:22,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:22,960 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:55:22,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:55:22,978 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:55:22,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:55:22,990 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:55:22,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:22,992 INFO L85 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 1 times [2021-10-28 23:55:22,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:55:22,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730852028] [2021-10-28 23:55:22,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:22,995 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:55:23,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:55:23,002 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:55:23,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:55:23,009 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:55:23,124 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:55:23,126 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:55:23,127 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:55:23,127 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:55:23,127 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:55:23,128 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:23,132 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:55:23,132 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:55:23,132 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex06.c_Iteration2_Loop [2021-10-28 23:55:23,132 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:55:23,132 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:55:23,154 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 23:55:23,170 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 23:55:23,174 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 23:55:23,250 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:55:23,250 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:55:23,253 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:23,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:23,256 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:23,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-28 23:55:23,263 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:55:23,264 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:55:23,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:23,320 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:23,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:23,321 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:23,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-28 23:55:23,325 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:55:23,326 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:55:23,351 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:55:23,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:23,397 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:55:23,397 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:55:23,397 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:55:23,397 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:55:23,397 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:55:23,397 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:23,397 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:55:23,398 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:55:23,398 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex06.c_Iteration2_Loop [2021-10-28 23:55:23,398 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:55:23,398 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:55:23,400 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 23:55:23,417 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 23:55:23,421 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 23:55:23,473 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:55:23,479 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:55:23,481 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:23,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:23,482 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:23,494 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 23:55:23,506 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:55:23,506 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:55:23,507 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:55:23,507 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:55:23,507 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:55:23,511 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:55:23,511 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:55:23,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-28 23:55:23,528 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:55:23,541 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 23:55:23,541 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 23:55:23,543 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:23,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:23,546 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:23,552 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:55:23,552 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:55:23,553 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:55:23,554 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 23:55:23,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-28 23:55:23,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:23,596 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:55:23,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:23,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:23,631 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:55:23,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:55:23,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:23,643 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:55:23,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:55:23,665 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 23:55:23,669 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 [2021-10-28 23:55:23,670 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 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 23:55:23,713 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 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 16 states and 22 transitions. Complement of second has 5 states. [2021-10-28 23:55:23,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-28 23:55:23,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 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 23:55:23,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2021-10-28 23:55:23,717 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 1 letters. Loop has 3 letters. [2021-10-28 23:55:23,718 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:55:23,719 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 4 letters. Loop has 3 letters. [2021-10-28 23:55:23,719 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:55:23,719 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 1 letters. Loop has 6 letters. [2021-10-28 23:55:23,720 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:55:23,720 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 22 transitions. [2021-10-28 23:55:23,722 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-10-28 23:55:23,724 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 13 states and 18 transitions. [2021-10-28 23:55:23,736 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-10-28 23:55:23,737 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-10-28 23:55:23,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 18 transitions. [2021-10-28 23:55:23,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:55:23,737 INFO L681 BuchiCegarLoop]: Abstraction has 13 states and 18 transitions. [2021-10-28 23:55:23,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 18 transitions. [2021-10-28 23:55:23,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 8. [2021-10-28 23:55:23,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 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 23:55:23,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2021-10-28 23:55:23,741 INFO L704 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-10-28 23:55:23,741 INFO L587 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-10-28 23:55:23,741 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 23:55:23,741 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2021-10-28 23:55:23,742 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 23:55:23,742 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:55:23,742 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:55:23,743 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 23:55:23,743 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 23:55:23,743 INFO L791 eck$LassoCheckResult]: Stem: 93#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 94#L13-1 assume !!(main_~i~0 >= -5 && main_~i~0 <= 5); 88#L10 [2021-10-28 23:55:23,744 INFO L793 eck$LassoCheckResult]: Loop: 88#L10 assume main_~i~0 > 0;main_~i~0 := main_~i~0 - 1; 91#L10-2 assume !(main_~i~0 < 0); 87#L13-1 assume !!(main_~i~0 >= -5 && main_~i~0 <= 5); 88#L10 [2021-10-28 23:55:23,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:23,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2021-10-28 23:55:23,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:55:23,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339039839] [2021-10-28 23:55:23,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:23,746 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:55:23,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:55:23,754 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:55:23,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:55:23,763 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:55:23,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:23,765 INFO L85 PathProgramCache]: Analyzing trace with hash 42945, now seen corresponding path program 1 times [2021-10-28 23:55:23,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:55:23,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503387511] [2021-10-28 23:55:23,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:23,766 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:55:23,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:55:23,774 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:55:23,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:55:23,787 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:55:23,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:23,791 INFO L85 PathProgramCache]: Analyzing trace with hash 29863736, now seen corresponding path program 1 times [2021-10-28 23:55:23,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:55:23,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906533341] [2021-10-28 23:55:23,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:23,792 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:55:23,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:55:23,803 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:55:23,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:55:23,822 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:55:23,872 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:55:23,872 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:55:23,872 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:55:23,872 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:55:23,872 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:55:23,872 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:23,873 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:55:23,873 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:55:23,873 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex06.c_Iteration3_Loop [2021-10-28 23:55:23,873 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:55:23,873 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:55:23,875 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 23:55:23,879 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 23:55:23,883 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 23:55:23,933 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:55:23,933 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:55:23,934 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:23,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:23,935 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:23,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-28 23:55:23,940 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:55:23,940 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:55:23,957 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:55:23,957 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:55:23,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:23,990 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:23,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:23,991 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:23,997 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:55:23,997 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:55:24,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-28 23:55:24,017 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:55:24,017 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:55:24,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:24,051 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:24,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:24,052 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:24,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-28 23:55:24,055 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:55:24,055 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:55:24,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:24,116 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:24,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:24,122 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:24,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-28 23:55:24,161 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:55:24,161 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:55:24,301 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:55:24,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:24,309 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:55:24,310 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:55:24,310 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:55:24,310 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:55:24,310 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:55:24,310 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:24,310 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:55:24,310 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:55:24,310 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex06.c_Iteration3_Loop [2021-10-28 23:55:24,310 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:55:24,310 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:55:24,312 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 23:55:24,317 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 23:55:24,321 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 23:55:24,376 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:55:24,377 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:55:24,377 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:24,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:24,385 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:24,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-28 23:55:24,387 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 23:55:24,395 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:55:24,396 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:55:24,396 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:55:24,396 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:55:24,400 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:55:24,400 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:55:24,412 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:55:24,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:24,454 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:24,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:24,457 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:24,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-28 23:55:24,469 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 23:55:24,480 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:55:24,480 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:55:24,480 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:55:24,481 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:55:24,485 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:55:24,485 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:55:24,504 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:55:24,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:24,550 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:24,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:24,552 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:24,558 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 23:55:24,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-28 23:55:24,569 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:55:24,570 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:55:24,570 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:55:24,570 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:55:24,570 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:55:24,572 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:55:24,572 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:55:24,588 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:55:24,603 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 23:55:24,603 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 23:55:24,603 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:24,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:24,626 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:24,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-28 23:55:24,669 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:55:24,670 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:55:24,670 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:55:24,670 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 23:55:24,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:24,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:24,719 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:55:24,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:24,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:24,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:55:24,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:55:24,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:24,750 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:55:24,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:55:24,836 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 23:55:24,837 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 23:55:24,839 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 23:55:24,866 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 21 states and 28 transitions. Complement of second has 5 states. [2021-10-28 23:55:24,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-28 23:55:24,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 23:55:24,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-10-28 23:55:24,871 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 2 letters. Loop has 3 letters. [2021-10-28 23:55:24,871 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:55:24,872 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 3 letters. [2021-10-28 23:55:24,872 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:55:24,873 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 2 letters. Loop has 6 letters. [2021-10-28 23:55:24,873 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:55:24,874 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 28 transitions. [2021-10-28 23:55:24,878 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-10-28 23:55:24,880 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 20 states and 27 transitions. [2021-10-28 23:55:24,880 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-10-28 23:55:24,881 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-10-28 23:55:24,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 27 transitions. [2021-10-28 23:55:24,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:55:24,881 INFO L681 BuchiCegarLoop]: Abstraction has 20 states and 27 transitions. [2021-10-28 23:55:24,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 27 transitions. [2021-10-28 23:55:24,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 16. [2021-10-28 23:55:24,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.4375) internal successors, (23), 15 states have internal predecessors, (23), 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 23:55:24,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 23 transitions. [2021-10-28 23:55:24,885 INFO L704 BuchiCegarLoop]: Abstraction has 16 states and 23 transitions. [2021-10-28 23:55:24,885 INFO L587 BuchiCegarLoop]: Abstraction has 16 states and 23 transitions. [2021-10-28 23:55:24,886 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 23:55:24,886 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 23 transitions. [2021-10-28 23:55:24,887 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-10-28 23:55:24,887 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:55:24,887 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:55:24,887 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-28 23:55:24,888 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 23:55:24,888 INFO L791 eck$LassoCheckResult]: Stem: 158#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 159#L13-1 assume !!(main_~i~0 >= -5 && main_~i~0 <= 5); 165#L10 assume !(main_~i~0 > 0); 152#L10-2 [2021-10-28 23:55:24,888 INFO L793 eck$LassoCheckResult]: Loop: 152#L10-2 assume !(main_~i~0 < 0); 153#L13-1 assume !!(main_~i~0 >= -5 && main_~i~0 <= 5); 156#L10 assume !(main_~i~0 > 0); 152#L10-2 [2021-10-28 23:55:24,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:24,889 INFO L85 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2021-10-28 23:55:24,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:55:24,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081485795] [2021-10-28 23:55:24,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:24,890 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:55:24,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:55:24,895 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:55:24,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:55:24,899 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:55:24,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:24,900 INFO L85 PathProgramCache]: Analyzing trace with hash 50297, now seen corresponding path program 1 times [2021-10-28 23:55:24,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:55:24,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468908152] [2021-10-28 23:55:24,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:24,901 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:55:24,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:55:24,906 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:55:24,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:55:24,910 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:55:24,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:24,911 INFO L85 PathProgramCache]: Analyzing trace with hash 925835413, now seen corresponding path program 1 times [2021-10-28 23:55:24,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:55:24,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409979252] [2021-10-28 23:55:24,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:24,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:55:24,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:55:24,917 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:55:24,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:55:24,922 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:55:24,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 11:55:24 BoogieIcfgContainer [2021-10-28 23:55:24,992 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 23:55:24,994 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:55:24,994 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:55:24,994 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:55:24,995 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:55:22" (3/4) ... [2021-10-28 23:55:24,998 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-28 23:55:25,050 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:55:25,050 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:55:25,052 INFO L168 Benchmark]: Toolchain (without parser) took 3419.47 ms. Allocated memory is still 100.7 MB. Free memory was 79.6 MB in the beginning and 62.6 MB in the end (delta: 17.0 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:55:25,052 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 79.7 MB. Free memory was 57.9 MB in the beginning and 57.9 MB in the end (delta: 44.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:55:25,053 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.50 ms. Allocated memory is still 100.7 MB. Free memory was 79.3 MB in the beginning and 78.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:55:25,054 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.85 ms. Allocated memory is still 100.7 MB. Free memory was 77.9 MB in the beginning and 76.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:55:25,057 INFO L168 Benchmark]: Boogie Preprocessor took 35.37 ms. Allocated memory is still 100.7 MB. Free memory was 76.7 MB in the beginning and 75.8 MB in the end (delta: 902.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:55:25,061 INFO L168 Benchmark]: RCFGBuilder took 320.36 ms. Allocated memory is still 100.7 MB. Free memory was 75.8 MB in the beginning and 68.1 MB in the end (delta: 7.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:55:25,062 INFO L168 Benchmark]: BuchiAutomizer took 2673.43 ms. Allocated memory is still 100.7 MB. Free memory was 68.1 MB in the beginning and 64.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. [2021-10-28 23:55:25,062 INFO L168 Benchmark]: Witness Printer took 56.37 ms. Allocated memory is still 100.7 MB. Free memory was 64.2 MB in the beginning and 62.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:55:25,066 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 79.7 MB. Free memory was 57.9 MB in the beginning and 57.9 MB in the end (delta: 44.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 275.50 ms. Allocated memory is still 100.7 MB. Free memory was 79.3 MB in the beginning and 78.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.85 ms. Allocated memory is still 100.7 MB. Free memory was 77.9 MB in the beginning and 76.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.37 ms. Allocated memory is still 100.7 MB. Free memory was 76.7 MB in the beginning and 75.8 MB in the end (delta: 902.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 320.36 ms. Allocated memory is still 100.7 MB. Free memory was 75.8 MB in the beginning and 68.1 MB in the end (delta: 7.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2673.43 ms. Allocated memory is still 100.7 MB. Free memory was 68.1 MB in the beginning and 64.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. * Witness Printer took 56.37 ms. Allocated memory is still 100.7 MB. Free memory was 64.2 MB in the beginning and 62.6 MB in the end (delta: 1.6 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 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * i and consists of 3 locations. One deterministic module has affine ranking function i and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 16 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.5s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 9 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 16 states and ocurred in iteration 3. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 15 SDtfs, 14 SDslu, 3 SDs, 0 SdLazy, 30 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax186 hnf100 lsp53 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq143 hnf94 smp100 dnf100 smp100 tf110 neg100 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 34ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 13]: 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@4f6424dc=0, \result=0, i=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 9]: 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 >= -5 && i <= 5 [L10] COND FALSE !(i > 0) Loop: [L13] COND FALSE !(i < 0) [L9] COND TRUE i >= -5 && i <= 5 [L10] COND FALSE !(i > 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-28 23:55:25,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:25,322 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bddc0df-36e9-4a01-aa59-1fe6fe75cdd8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...