./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/array-memsafety/rec_strlen-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/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_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/array-memsafety/rec_strlen-alloca-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/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 32bit --witnessprinter.graph.data.programhash 60396cce4fa0936fb91e88a54a287214045469c9d9b3d447954681e0a5aabbc0 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 22:56:15,100 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 22:56:15,104 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 22:56:15,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 22:56:15,157 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 22:56:15,162 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 22:56:15,165 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 22:56:15,169 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 22:56:15,172 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 22:56:15,177 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 22:56:15,179 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 22:56:15,181 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 22:56:15,181 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 22:56:15,184 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 22:56:15,187 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 22:56:15,192 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 22:56:15,193 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 22:56:15,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 22:56:15,197 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 22:56:15,208 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 22:56:15,210 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 22:56:15,212 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 22:56:15,215 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 22:56:15,216 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 22:56:15,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 22:56:15,221 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 22:56:15,221 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 22:56:15,224 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 22:56:15,225 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 22:56:15,226 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 22:56:15,227 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 22:56:15,228 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 22:56:15,230 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 22:56:15,231 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 22:56:15,233 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 22:56:15,233 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 22:56:15,234 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 22:56:15,235 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 22:56:15,235 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 22:56:15,236 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 22:56:15,237 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 22:56:15,237 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 22:56:15,292 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 22:56:15,294 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 22:56:15,295 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 22:56:15,295 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 22:56:15,297 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 22:56:15,297 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 22:56:15,297 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 22:56:15,297 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 22:56:15,298 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 22:56:15,298 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 22:56:15,299 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 22:56:15,299 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 22:56:15,300 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 22:56:15,300 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 22:56:15,300 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 22:56:15,300 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 22:56:15,300 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 22:56:15,301 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 22:56:15,301 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 22:56:15,301 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 22:56:15,301 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 22:56:15,301 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 22:56:15,302 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 22:56:15,302 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 22:56:15,302 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 22:56:15,302 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 22:56:15,304 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 22:56:15,305 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 22:56:15,305 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 22:56:15,305 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 22:56:15,306 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 22:56:15,306 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 22:56:15,307 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 22:56:15,307 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_3c744048-2009-404b-b14a-0cb6863f3bb9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 60396cce4fa0936fb91e88a54a287214045469c9d9b3d447954681e0a5aabbc0 [2021-10-28 22:56:15,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 22:56:15,673 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 22:56:15,676 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 22:56:15,677 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 22:56:15,678 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 22:56:15,679 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/array-memsafety/rec_strlen-alloca-1.i [2021-10-28 22:56:15,739 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/data/200f1021e/577d359d3ce643b89424c8452c19998a/FLAG97b17bee5 [2021-10-28 22:56:16,386 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 22:56:16,387 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/sv-benchmarks/c/array-memsafety/rec_strlen-alloca-1.i [2021-10-28 22:56:16,411 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/data/200f1021e/577d359d3ce643b89424c8452c19998a/FLAG97b17bee5 [2021-10-28 22:56:16,632 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/data/200f1021e/577d359d3ce643b89424c8452c19998a [2021-10-28 22:56:16,634 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 22:56:16,636 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 22:56:16,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 22:56:16,641 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 22:56:16,644 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 22:56:16,645 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:56:16" (1/1) ... [2021-10-28 22:56:16,647 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21e30634 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:56:16, skipping insertion in model container [2021-10-28 22:56:16,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:56:16" (1/1) ... [2021-10-28 22:56:16,655 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 22:56:16,705 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 22:56:17,029 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:56:17,038 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 22:56:17,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:56:17,112 INFO L208 MainTranslator]: Completed translation [2021-10-28 22:56:17,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:56:17 WrapperNode [2021-10-28 22:56:17,114 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 22:56:17,116 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 22:56:17,117 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 22:56:17,117 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 22:56:17,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:56:17" (1/1) ... [2021-10-28 22:56:17,154 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:56:17" (1/1) ... [2021-10-28 22:56:17,180 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 22:56:17,182 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 22:56:17,182 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 22:56:17,183 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 22:56:17,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:56:17" (1/1) ... [2021-10-28 22:56:17,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:56:17" (1/1) ... [2021-10-28 22:56:17,210 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:56:17" (1/1) ... [2021-10-28 22:56:17,211 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:56:17" (1/1) ... [2021-10-28 22:56:17,216 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:56:17" (1/1) ... [2021-10-28 22:56:17,222 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:56:17" (1/1) ... [2021-10-28 22:56:17,229 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:56:17" (1/1) ... [2021-10-28 22:56:17,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 22:56:17,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 22:56:17,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 22:56:17,259 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 22:56:17,261 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:56:17" (1/1) ... [2021-10-28 22:56:17,289 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:56:17,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:56:17,348 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:56:17,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 22:56:17,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 22:56:17,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 22:56:17,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 22:56:17,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 22:56:17,402 INFO L130 BoogieDeclarations]: Found specification of procedure strlen_rec [2021-10-28 22:56:17,402 INFO L138 BoogieDeclarations]: Found implementation of procedure strlen_rec [2021-10-28 22:56:17,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 22:56:17,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 22:56:17,754 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 22:56:17,754 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-28 22:56:17,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:56:17 BoogieIcfgContainer [2021-10-28 22:56:17,756 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 22:56:17,757 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 22:56:17,757 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 22:56:17,760 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 22:56:17,761 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 22:56:17,761 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 10:56:16" (1/3) ... [2021-10-28 22:56:17,763 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@41a85ffe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 10:56:17, skipping insertion in model container [2021-10-28 22:56:17,763 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 22:56:17,763 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:56:17" (2/3) ... [2021-10-28 22:56:17,764 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@41a85ffe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 10:56:17, skipping insertion in model container [2021-10-28 22:56:17,764 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 22:56:17,764 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:56:17" (3/3) ... [2021-10-28 22:56:17,765 INFO L389 chiAutomizerObserver]: Analyzing ICFG rec_strlen-alloca-1.i [2021-10-28 22:56:17,810 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 22:56:17,811 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 22:56:17,811 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 22:56:17,811 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 22:56:17,811 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 22:56:17,811 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 22:56:17,811 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 22:56:17,812 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 22:56:17,827 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 22:56:17,868 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2021-10-28 22:56:17,876 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:56:17,876 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:56:17,883 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-28 22:56:17,883 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 22:56:17,883 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 22:56:17,884 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 22:56:17,887 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2021-10-28 22:56:17,888 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:56:17,889 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:56:17,889 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-28 22:56:17,890 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 22:56:17,897 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 7#L-1true havoc main_#res;havoc main_#t~nondet4, main_#t~malloc5.base, main_#t~malloc5.offset, main_#t~nondet7, main_#t~post6, main_~i~0, main_#t~ret8, main_~length1~0, main_~nondetString1~0.base, main_~nondetString1~0.offset;main_~length1~0 := main_#t~nondet4;havoc main_#t~nondet4; 18#L522true assume !(main_~length1~0 < 1); 12#L522-2true call main_#t~malloc5.base, main_#t~malloc5.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc5.base, main_#t~malloc5.offset;main_~i~0 := 0; 10#L527-3true [2021-10-28 22:56:17,898 INFO L793 eck$LassoCheckResult]: Loop: 10#L527-3true assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet7, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet7; 13#L527-2true main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 10#L527-3true [2021-10-28 22:56:17,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:56:17,909 INFO L85 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2021-10-28 22:56:17,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:56:17,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146973879] [2021-10-28 22:56:17,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:56:17,932 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:56:18,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:56:18,068 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:56:18,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:56:18,128 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:56:18,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:56:18,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1507, now seen corresponding path program 1 times [2021-10-28 22:56:18,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:56:18,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869493981] [2021-10-28 22:56:18,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:56:18,137 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:56:18,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:56:18,167 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:56:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:56:18,195 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:56:18,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:56:18,200 INFO L85 PathProgramCache]: Analyzing trace with hash 889568455, now seen corresponding path program 1 times [2021-10-28 22:56:18,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:56:18,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150895657] [2021-10-28 22:56:18,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:56:18,202 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:56:18,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:56:18,223 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:56:18,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:56:18,243 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:56:18,648 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 22:56:18,648 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 22:56:18,648 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 22:56:18,649 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 22:56:18,649 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 22:56:18,649 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:56:18,649 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 22:56:18,649 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 22:56:18,650 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_strlen-alloca-1.i_Iteration1_Lasso [2021-10-28 22:56:18,650 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 22:56:18,650 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 22:56:18,674 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 22:56:18,680 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 22:56:18,684 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 22:56:18,804 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 22:56:18,808 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 22:56:18,811 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 22:56:18,815 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 22:56:18,819 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 22:56:18,822 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 22:56:18,827 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 22:56:19,059 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 22:56:19,064 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 22:56:19,066 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:56:19,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:56:19,069 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:56:19,078 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 22:56:19,088 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:56:19,088 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 22:56:19,089 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:56:19,089 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:56:19,089 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:56:19,092 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 22:56:19,092 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 22:56:19,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-28 22:56:19,113 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:56:19,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-28 22:56:19,136 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:56:19,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:56:19,137 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:56:19,152 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:56:19,161 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:56:19,161 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 22:56:19,161 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:56:19,162 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:56:19,162 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:56:19,163 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 22:56:19,163 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 22:56:19,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-28 22:56:19,180 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:56:19,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-28 22:56:19,216 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:56:19,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:56:19,218 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:56:19,224 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 22:56:19,234 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:56:19,234 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:56:19,234 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:56:19,234 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:56:19,241 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 22:56:19,241 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 22:56:19,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-28 22:56:19,260 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:56:19,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-28 22:56:19,305 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:56:19,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:56:19,306 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:56:19,312 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 22:56:19,321 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:56:19,321 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 22:56:19,321 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:56:19,322 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:56:19,322 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:56:19,323 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 22:56:19,324 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 22:56:19,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-28 22:56:19,330 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:56:19,353 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-10-28 22:56:19,357 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:56:19,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:56:19,358 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:56:19,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-28 22:56:19,362 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 22:56:19,371 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:56:19,371 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:56:19,371 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:56:19,371 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:56:19,386 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 22:56:19,386 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 22:56:19,412 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 22:56:19,472 INFO L443 ModelExtractionUtils]: Simplification made 9 calls to the SMT solver. [2021-10-28 22:56:19,472 INFO L444 ModelExtractionUtils]: 6 out of 22 variables were initially zero. Simplification set additionally 13 variables to zero. [2021-10-28 22:56:19,474 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:56:19,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:56:19,485 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:56:19,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-28 22:56:19,491 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 22:56:19,513 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-10-28 22:56:19,513 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 22:56:19,514 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~length1~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~length1~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-28 22:56:19,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-28 22:56:19,559 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2021-10-28 22:56:19,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:56:19,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:56:19,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 22:56:19,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:56:19,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:56:19,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 22:56:19,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:56:19,700 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 22:56:19,715 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 22:56:19,717 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 18 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:56:19,781 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 18 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2). Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 34 states and 43 transitions. Complement of second has 9 states. [2021-10-28 22:56:19,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 22:56:19,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:56:19,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 23 transitions. [2021-10-28 22:56:19,786 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 4 letters. Loop has 2 letters. [2021-10-28 22:56:19,787 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:56:19,787 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 6 letters. Loop has 2 letters. [2021-10-28 22:56:19,788 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:56:19,788 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 4 letters. Loop has 4 letters. [2021-10-28 22:56:19,788 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:56:19,789 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 43 transitions. [2021-10-28 22:56:19,793 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 22:56:19,798 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 12 states and 15 transitions. [2021-10-28 22:56:19,799 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-10-28 22:56:19,799 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-10-28 22:56:19,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 15 transitions. [2021-10-28 22:56:19,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:56:19,801 INFO L681 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2021-10-28 22:56:19,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 15 transitions. [2021-10-28 22:56:19,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-28 22:56:19,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:56:19,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2021-10-28 22:56:19,827 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2021-10-28 22:56:19,827 INFO L587 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2021-10-28 22:56:19,827 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 22:56:19,827 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 15 transitions. [2021-10-28 22:56:19,828 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 22:56:19,828 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:56:19,829 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:56:19,829 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:56:19,829 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 22:56:19,830 INFO L791 eck$LassoCheckResult]: Stem: 111#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 112#L-1 havoc main_#res;havoc main_#t~nondet4, main_#t~malloc5.base, main_#t~malloc5.offset, main_#t~nondet7, main_#t~post6, main_~i~0, main_#t~ret8, main_~length1~0, main_~nondetString1~0.base, main_~nondetString1~0.offset;main_~length1~0 := main_#t~nondet4;havoc main_#t~nondet4; 122#L522 assume !(main_~length1~0 < 1); 113#L522-2 call main_#t~malloc5.base, main_#t~malloc5.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc5.base, main_#t~malloc5.offset;main_~i~0 := 0; 114#L527-3 assume !(main_~i~0 < main_~length1~0 - 1); 121#L527-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1); 119#L533 call main_#t~ret8 := strlen_rec(main_~nondetString1~0.base, main_~nondetString1~0.offset);< 117#strlen_recENTRY [2021-10-28 22:56:19,830 INFO L793 eck$LassoCheckResult]: Loop: 117#strlen_recENTRY ~p.base, ~p.offset := #in~p.base, #in~p.offset;call #t~mem2 := read~int(~p.base, ~p.offset, 1); 120#L515 assume !(0 == #t~mem2);havoc #t~mem2; 118#L518 call #t~ret3 := strlen_rec(~p.base, 1 + ~p.offset);< 117#strlen_recENTRY [2021-10-28 22:56:19,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:56:19,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1806816568, now seen corresponding path program 1 times [2021-10-28 22:56:19,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:56:19,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022304591] [2021-10-28 22:56:19,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:56:19,831 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:56:19,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:56:19,846 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:56:19,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:56:19,862 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:56:19,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:56:19,863 INFO L85 PathProgramCache]: Analyzing trace with hash 58722, now seen corresponding path program 1 times [2021-10-28 22:56:19,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:56:19,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976955395] [2021-10-28 22:56:19,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:56:19,864 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:56:19,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:56:19,871 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:56:19,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:56:19,882 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:56:19,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:56:19,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1952714549, now seen corresponding path program 1 times [2021-10-28 22:56:19,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:56:19,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054783888] [2021-10-28 22:56:19,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:56:19,884 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:56:19,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:56:20,109 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 22:56:20,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:56:20,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054783888] [2021-10-28 22:56:20,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054783888] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:56:20,113 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:56:20,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 22:56:20,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898551033] [2021-10-28 22:56:20,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:56:20,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 22:56:20,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-28 22:56:20,255 INFO L87 Difference]: Start difference. First operand 12 states and 15 transitions. cyclomatic complexity: 5 Second operand has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:56:20,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:56:20,370 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2021-10-28 22:56:20,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 22:56:20,371 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 19 transitions. [2021-10-28 22:56:20,378 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 22:56:20,380 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 13 states and 15 transitions. [2021-10-28 22:56:20,380 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2021-10-28 22:56:20,380 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-10-28 22:56:20,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 15 transitions. [2021-10-28 22:56:20,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:56:20,381 INFO L681 BuchiCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-10-28 22:56:20,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 15 transitions. [2021-10-28 22:56:20,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2021-10-28 22:56:20,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:56:20,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2021-10-28 22:56:20,395 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2021-10-28 22:56:20,395 INFO L587 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2021-10-28 22:56:20,395 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 22:56:20,395 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 14 transitions. [2021-10-28 22:56:20,400 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 22:56:20,400 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:56:20,400 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:56:20,401 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:56:20,401 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 22:56:20,401 INFO L791 eck$LassoCheckResult]: Stem: 159#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 160#L-1 havoc main_#res;havoc main_#t~nondet4, main_#t~malloc5.base, main_#t~malloc5.offset, main_#t~nondet7, main_#t~post6, main_~i~0, main_#t~ret8, main_~length1~0, main_~nondetString1~0.base, main_~nondetString1~0.offset;main_~length1~0 := main_#t~nondet4;havoc main_#t~nondet4; 170#L522 assume !(main_~length1~0 < 1); 161#L522-2 call main_#t~malloc5.base, main_#t~malloc5.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc5.base, main_#t~malloc5.offset;main_~i~0 := 0; 162#L527-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet7, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet7; 163#L527-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 164#L527-3 assume !(main_~i~0 < main_~length1~0 - 1); 169#L527-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1); 166#L533 call main_#t~ret8 := strlen_rec(main_~nondetString1~0.base, main_~nondetString1~0.offset);< 165#strlen_recENTRY [2021-10-28 22:56:20,402 INFO L793 eck$LassoCheckResult]: Loop: 165#strlen_recENTRY ~p.base, ~p.offset := #in~p.base, #in~p.offset;call #t~mem2 := read~int(~p.base, ~p.offset, 1); 168#L515 assume !(0 == #t~mem2);havoc #t~mem2; 167#L518 call #t~ret3 := strlen_rec(~p.base, 1 + ~p.offset);< 165#strlen_recENTRY [2021-10-28 22:56:20,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:56:20,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1185641750, now seen corresponding path program 1 times [2021-10-28 22:56:20,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:56:20,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338339003] [2021-10-28 22:56:20,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:56:20,405 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:56:20,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:56:20,450 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:56:20,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:56:20,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-28 22:56:20,521 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:56:20,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:56:20,522 INFO L85 PathProgramCache]: Analyzing trace with hash 58722, now seen corresponding path program 2 times [2021-10-28 22:56:20,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:56:20,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134480552] [2021-10-28 22:56:20,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:56:20,523 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:56:20,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:56:20,534 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:56:20,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:56:20,545 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:56:20,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:56:20,548 INFO L85 PathProgramCache]: Analyzing trace with hash -357639123, now seen corresponding path program 1 times [2021-10-28 22:56:20,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:56:20,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316285271] [2021-10-28 22:56:20,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:56:20,549 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:56:20,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:56:20,583 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:56:20,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:56:20,638 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:56:21,182 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 22:56:21,183 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 22:56:21,183 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 22:56:21,183 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 22:56:21,183 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 22:56:21,183 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:56:21,183 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 22:56:21,184 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 22:56:21,184 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_strlen-alloca-1.i_Iteration3_Lasso [2021-10-28 22:56:21,184 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 22:56:21,184 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 22:56:21,188 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 22:56:21,191 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 22:56:21,239 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 22:56:21,242 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 22:56:21,244 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 22:56:21,247 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 22:56:21,250 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 22:56:21,252 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 22:56:21,255 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 22:56:21,258 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 22:56:21,261 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 22:56:21,263 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 22:56:21,265 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 22:56:21,268 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:56:21,276 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:56:21,279 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 22:56:21,281 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:56:21,284 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 22:56:21,286 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 22:56:21,288 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 22:56:21,292 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 22:56:21,295 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 22:56:21,298 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 22:56:21,301 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 22:56:21,303 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 22:56:21,305 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 22:56:21,308 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 22:56:21,310 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 22:56:21,520 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 22:56:21,521 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 22:56:21,521 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:56:21,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:56:21,533 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:56:21,540 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 22:56:21,552 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:56:21,552 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 22:56:21,552 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:56:21,552 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:56:21,552 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:56:21,553 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 22:56:21,553 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 22:56:21,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-28 22:56:21,560 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:56:21,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-28 22:56:21,601 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:56:21,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:56:21,605 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:56:21,615 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 22:56:21,630 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:56:21,630 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:56:21,630 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:56:21,630 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:56:21,634 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 22:56:21,634 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 22:56:21,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-28 22:56:21,652 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:56:21,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-28 22:56:21,688 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:56:21,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:56:21,690 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:56:21,698 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 22:56:21,708 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:56:21,709 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:56:21,709 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:56:21,709 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:56:21,715 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 22:56:21,715 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 22:56:21,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-28 22:56:21,736 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:56:21,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-28 22:56:21,778 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:56:21,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:56:21,780 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:56:21,786 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 22:56:21,795 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:56:21,795 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 22:56:21,796 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:56:21,796 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-28 22:56:21,796 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:56:21,798 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-28 22:56:21,798 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 22:56:21,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-28 22:56:21,816 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:56:21,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-28 22:56:21,853 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:56:21,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:56:21,855 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:56:21,862 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 22:56:21,871 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:56:21,872 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:56:21,872 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:56:21,872 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:56:21,876 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 22:56:21,877 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 22:56:21,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-28 22:56:21,900 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 22:56:21,923 INFO L443 ModelExtractionUtils]: Simplification made 7 calls to the SMT solver. [2021-10-28 22:56:21,923 INFO L444 ModelExtractionUtils]: 0 out of 10 variables were initially zero. Simplification set additionally 7 variables to zero. [2021-10-28 22:56:21,923 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:56:21,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:56:21,927 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:56:21,959 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 22:56:21,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-28 22:56:21,986 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-10-28 22:56:21,986 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 22:56:21,986 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(strlen_rec_#in~p.offset, v_rep(select #length strlen_rec_#in~p.base)_1) = -1*strlen_rec_#in~p.offset + 1*v_rep(select #length strlen_rec_#in~p.base)_1 Supporting invariants [] [2021-10-28 22:56:22,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-28 22:56:22,030 INFO L297 tatePredicateManager]: 1 out of 1 supporting invariants were superfluous and have been removed [2021-10-28 22:56:22,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:56:22,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:56:22,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 22:56:22,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:56:22,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:56:22,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 22:56:22,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:56:22,171 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 22:56:22,172 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 22:56:22,173 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:56:22,213 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 19 states and 21 transitions. Complement of second has 7 states. [2021-10-28 22:56:22,214 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 22:56:22,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:56:22,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 13 transitions. [2021-10-28 22:56:22,216 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 9 letters. Loop has 3 letters. [2021-10-28 22:56:22,217 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:56:22,217 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 12 letters. Loop has 3 letters. [2021-10-28 22:56:22,219 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:56:22,219 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 9 letters. Loop has 6 letters. [2021-10-28 22:56:22,219 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:56:22,220 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 21 transitions. [2021-10-28 22:56:22,223 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 22:56:22,223 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 0 states and 0 transitions. [2021-10-28 22:56:22,224 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-28 22:56:22,224 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-28 22:56:22,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-28 22:56:22,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:56:22,224 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 22:56:22,224 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 22:56:22,225 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 22:56:22,229 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 22:56:22,229 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-28 22:56:22,229 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 22:56:22,229 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-28 22:56:22,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 10:56:22 BoogieIcfgContainer [2021-10-28 22:56:22,236 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 22:56:22,237 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 22:56:22,237 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 22:56:22,237 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 22:56:22,238 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:56:17" (3/4) ... [2021-10-28 22:56:22,242 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 22:56:22,242 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 22:56:22,245 INFO L168 Benchmark]: Toolchain (without parser) took 5606.90 ms. Allocated memory was 94.4 MB in the beginning and 123.7 MB in the end (delta: 29.4 MB). Free memory was 71.0 MB in the beginning and 70.4 MB in the end (delta: 596.7 kB). Peak memory consumption was 30.7 MB. Max. memory is 16.1 GB. [2021-10-28 22:56:22,246 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 77.6 MB. Free memory was 51.6 MB in the beginning and 51.5 MB in the end (delta: 84.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:56:22,247 INFO L168 Benchmark]: CACSL2BoogieTranslator took 474.31 ms. Allocated memory is still 94.4 MB. Free memory was 70.7 MB in the beginning and 55.6 MB in the end (delta: 15.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-28 22:56:22,248 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.17 ms. Allocated memory is still 94.4 MB. Free memory was 55.6 MB in the beginning and 54.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:56:22,249 INFO L168 Benchmark]: Boogie Preprocessor took 76.51 ms. Allocated memory is still 94.4 MB. Free memory was 54.1 MB in the beginning and 73.0 MB in the end (delta: -19.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 22:56:22,256 INFO L168 Benchmark]: RCFGBuilder took 497.03 ms. Allocated memory is still 94.4 MB. Free memory was 73.0 MB in the beginning and 63.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 22:56:22,257 INFO L168 Benchmark]: BuchiAutomizer took 4479.42 ms. Allocated memory was 94.4 MB in the beginning and 123.7 MB in the end (delta: 29.4 MB). Free memory was 63.7 MB in the beginning and 71.3 MB in the end (delta: -7.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-28 22:56:22,259 INFO L168 Benchmark]: Witness Printer took 5.28 ms. Allocated memory is still 123.7 MB. Free memory was 71.3 MB in the beginning and 70.4 MB in the end (delta: 854.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 22:56:22,267 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 77.6 MB. Free memory was 51.6 MB in the beginning and 51.5 MB in the end (delta: 84.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 474.31 ms. Allocated memory is still 94.4 MB. Free memory was 70.7 MB in the beginning and 55.6 MB in the end (delta: 15.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.17 ms. Allocated memory is still 94.4 MB. Free memory was 55.6 MB in the beginning and 54.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 76.51 ms. Allocated memory is still 94.4 MB. Free memory was 54.1 MB in the beginning and 73.0 MB in the end (delta: -19.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 497.03 ms. Allocated memory is still 94.4 MB. Free memory was 73.0 MB in the beginning and 63.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 4479.42 ms. Allocated memory was 94.4 MB in the beginning and 123.7 MB in the end (delta: 29.4 MB). Free memory was 63.7 MB in the beginning and 71.3 MB in the end (delta: -7.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Witness Printer took 5.28 ms. Allocated memory is still 123.7 MB. Free memory was 71.3 MB in the beginning and 70.4 MB in the end (delta: 854.1 kB). 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). One deterministic module has affine ranking function length1 + -1 * i and consists of 5 locations. One deterministic module has affine ranking function -1 * p + unknown-#length-unknown[p] and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.4s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 3.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 12 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 25 SDtfs, 31 SDslu, 21 SDs, 0 SdLazy, 58 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital93 mio100 ax119 hnf100 lsp78 ukn72 mio100 lsp58 div100 bol100 ite100 ukn100 eq164 hnf91 smp100 dnf100 smp100 tf100 neg100 sie103 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 44ms VariablesStem: 3 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-28 22:56:22,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-28 22:56:22,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c744048-2009-404b-b14a-0cb6863f3bb9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...