./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-memory-linkedlists/ll_append-alloca-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-memory-linkedlists/ll_append-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 18edad3aefc49839189b8c997aba3dd32264f7ca ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/config using search string *Termination*64bit*_Bitvector*.epf No suitable settings file found using Termination*64bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: line 74133 column 524: unknown constant v_DerPreprocessor_2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 01:11:56,971 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 01:11:56,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 01:11:57,064 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 01:11:57,071 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 01:11:57,077 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 01:11:57,081 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 01:11:57,086 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 01:11:57,090 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 01:11:57,102 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 01:11:57,104 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 01:11:57,107 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 01:11:57,107 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 01:11:57,111 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 01:11:57,114 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 01:11:57,116 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 01:11:57,119 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 01:11:57,120 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 01:11:57,128 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 01:11:57,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 01:11:57,141 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 01:11:57,144 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 01:11:57,148 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 01:11:57,150 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 01:11:57,162 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 01:11:57,163 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 01:11:57,164 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 01:11:57,167 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 01:11:57,168 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 01:11:57,169 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 01:11:57,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 01:11:57,172 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 01:11:57,173 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 01:11:57,175 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 01:11:57,178 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 01:11:57,178 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 01:11:57,179 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 01:11:57,179 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 01:11:57,180 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 01:11:57,182 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 01:11:57,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 01:11:57,185 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-13 01:11:57,251 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 01:11:57,257 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 01:11:57,258 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 01:11:57,258 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 01:11:57,260 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 01:11:57,261 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 01:11:57,261 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 01:11:57,262 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-13 01:11:57,262 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-13 01:11:57,262 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-13 01:11:57,264 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-13 01:11:57,264 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-13 01:11:57,265 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-13 01:11:57,265 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 01:11:57,265 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 01:11:57,265 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 01:11:57,266 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 01:11:57,267 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-13 01:11:57,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-13 01:11:57,269 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-13 01:11:57,269 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 01:11:57,276 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-13 01:11:57,277 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 01:11:57,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-13 01:11:57,279 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 01:11:57,279 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 01:11:57,280 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 01:11:57,283 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 01:11:57,283 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 01:11:57,285 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-13 01:11:57,285 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_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18edad3aefc49839189b8c997aba3dd32264f7ca [2021-10-13 01:11:57,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 01:11:57,669 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 01:11:57,673 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 01:11:57,675 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 01:11:57,676 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 01:11:57,677 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/termination-memory-linkedlists/ll_append-alloca-2.i [2021-10-13 01:11:57,797 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/data/7bd30e499/7e45e29834ab4ace8b9957fb19e705e6/FLAGdcd345872 [2021-10-13 01:11:58,448 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 01:11:58,450 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/sv-benchmarks/c/termination-memory-linkedlists/ll_append-alloca-2.i [2021-10-13 01:11:58,468 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/data/7bd30e499/7e45e29834ab4ace8b9957fb19e705e6/FLAGdcd345872 [2021-10-13 01:11:58,735 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/data/7bd30e499/7e45e29834ab4ace8b9957fb19e705e6 [2021-10-13 01:11:58,740 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 01:11:58,742 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 01:11:58,749 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 01:11:58,749 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 01:11:58,754 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 01:11:58,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:11:58" (1/1) ... [2021-10-13 01:11:58,757 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50ea6e39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:58, skipping insertion in model container [2021-10-13 01:11:58,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:11:58" (1/1) ... [2021-10-13 01:11:58,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 01:11:58,816 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:11:59,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:11:59,305 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 01:11:59,368 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:11:59,411 INFO L208 MainTranslator]: Completed translation [2021-10-13 01:11:59,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:59 WrapperNode [2021-10-13 01:11:59,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 01:11:59,413 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 01:11:59,413 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 01:11:59,413 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 01:11:59,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:59" (1/1) ... [2021-10-13 01:11:59,443 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:59" (1/1) ... [2021-10-13 01:11:59,471 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 01:11:59,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 01:11:59,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 01:11:59,472 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 01:11:59,484 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:59" (1/1) ... [2021-10-13 01:11:59,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:59" (1/1) ... [2021-10-13 01:11:59,489 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:59" (1/1) ... [2021-10-13 01:11:59,490 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:59" (1/1) ... [2021-10-13 01:11:59,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:59" (1/1) ... [2021-10-13 01:11:59,504 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:59" (1/1) ... [2021-10-13 01:11:59,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:59" (1/1) ... [2021-10-13 01:11:59,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 01:11:59,512 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 01:11:59,512 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 01:11:59,512 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 01:11:59,514 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:59" (1/1) ... [2021-10-13 01:11:59,525 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:59,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:59,599 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:59,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-13 01:11:59,673 INFO L130 BoogieDeclarations]: Found specification of procedure new_ll [2021-10-13 01:11:59,675 INFO L138 BoogieDeclarations]: Found implementation of procedure new_ll [2021-10-13 01:11:59,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 01:11:59,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 01:11:59,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 01:11:59,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 01:11:59,677 INFO L130 BoogieDeclarations]: Found specification of procedure length [2021-10-13 01:11:59,677 INFO L138 BoogieDeclarations]: Found implementation of procedure length [2021-10-13 01:11:59,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 01:11:59,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 01:12:00,066 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 01:12:00,067 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 01:12:00,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:12:00 BoogieIcfgContainer [2021-10-13 01:12:00,070 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 01:12:00,071 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-13 01:12:00,071 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-13 01:12:00,076 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-13 01:12:00,077 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 01:12:00,078 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.10 01:11:58" (1/3) ... [2021-10-13 01:12:00,079 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@d95d450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 01:12:00, skipping insertion in model container [2021-10-13 01:12:00,080 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 01:12:00,080 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:59" (2/3) ... [2021-10-13 01:12:00,081 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@d95d450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 01:12:00, skipping insertion in model container [2021-10-13 01:12:00,081 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 01:12:00,081 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:12:00" (3/3) ... [2021-10-13 01:12:00,083 INFO L389 chiAutomizerObserver]: Analyzing ICFG ll_append-alloca-2.i [2021-10-13 01:12:00,141 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-13 01:12:00,142 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-13 01:12:00,142 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-13 01:12:00,142 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-13 01:12:00,142 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-13 01:12:00,143 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-13 01:12:00,143 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-13 01:12:00,143 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-13 01:12:00,172 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 27 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-13 01:12:00,202 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 8 [2021-10-13 01:12:00,203 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:12:00,203 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:12:00,212 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-13 01:12:00,212 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-13 01:12:00,213 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-13 01:12:00,213 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 27 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-13 01:12:00,217 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 8 [2021-10-13 01:12:00,218 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:12:00,218 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:12:00,219 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-13 01:12:00,219 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-13 01:12:00,228 INFO L791 eck$LassoCheckResult]: Stem: 17#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 8#L-1true havoc main_#res;havoc main_#t~nondet8, main_#t~ret9.base, main_#t~ret9.offset, main_#t~ret10.base, main_#t~ret10.offset, main_#t~ret11, main_~n~0, main_~x~0.base, main_~x~0.offset, main_~y~0.base, main_~y~0.offset, main_~y_length~0;main_~n~0 := main_#t~nondet8;havoc main_#t~nondet8; 15#L574true assume !(main_~n~0 < 1); 27#L577true call main_#t~ret9.base, main_#t~ret9.offset := new_ll(main_~n~0);< 14#new_llENTRYtrue [2021-10-13 01:12:00,228 INFO L793 eck$LassoCheckResult]: Loop: 14#new_llENTRYtrue ~n := #in~n; 21#L548true assume !(0 == ~n);call #t~malloc2.base, #t~malloc2.offset := #Ultimate.allocOnHeap(12);~head~0.base, ~head~0.offset := #t~malloc2.base, #t~malloc2.offset;havoc #t~malloc2.base, #t~malloc2.offset;call write~int(~n, ~head~0.base, ~head~0.offset, 4); 16#L552true call #t~ret3.base, #t~ret3.offset := new_ll(~n - 1);< 14#new_llENTRYtrue [2021-10-13 01:12:00,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:12:00,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1418244, now seen corresponding path program 1 times [2021-10-13 01:12:00,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:12:00,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011672251] [2021-10-13 01:12:00,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:12:00,273 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:12:00,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:12:00,404 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:12:00,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:12:00,448 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:12:00,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:12:00,453 INFO L82 PathProgramCache]: Analyzing trace with hash 29967, now seen corresponding path program 1 times [2021-10-13 01:12:00,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:12:00,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690473926] [2021-10-13 01:12:00,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:12:00,455 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:12:00,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:12:00,490 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:12:00,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:12:00,517 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:12:00,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:12:00,520 INFO L82 PathProgramCache]: Analyzing trace with hash -698765780, now seen corresponding path program 1 times [2021-10-13 01:12:00,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:12:00,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58350943] [2021-10-13 01:12:00,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:12:00,521 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:12:00,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:12:00,549 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:12:00,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:12:00,588 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:12:01,735 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:12:01,736 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:12:01,736 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:12:01,736 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:12:01,736 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 01:12:01,737 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:12:01,737 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:12:01,738 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:12:01,739 INFO L133 ssoRankerPreferences]: Filename of dumped script: ll_append-alloca-2.i_Iteration1_Lasso [2021-10-13 01:12:01,739 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:12:01,739 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:12:01,777 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:12:01,784 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:12:01,787 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:12:01,795 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:12:01,799 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:12:01,802 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:12:01,807 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:12:01,858 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:12:01,862 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:12:01,864 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:12:01,868 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:12:01,870 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:12:01,873 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:12:01,875 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:12:01,878 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:12:01,880 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:12:01,885 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:12:01,888 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:12:01,891 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:12:01,894 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:12:01,897 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:12:01,899 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:12:01,902 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:12:01,905 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:12:01,908 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:12:01,910 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:12:01,913 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:12:01,916 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:12:01,918 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:12:01,922 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:12:01,924 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:12:01,928 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:12:01,931 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:12:01,937 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:12:01,943 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:12:01,945 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:12:01,948 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:12:01,951 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:12:01,954 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:12:01,957 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:12:01,959 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:12:01,962 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:12:01,975 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:12:01,980 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:12:02,298 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:12:02,317 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 01:12:02,320 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:12:02,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:12:02,353 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:12:02,423 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:12:02,436 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:12:02,436 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:12:02,437 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:12:02,437 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:12:02,437 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:12:02,440 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:12:02,440 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:12:02,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-13 01:12:02,448 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:12:02,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-13 01:12:02,511 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:12:02,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:12:02,515 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:12:02,525 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:12:02,537 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:12:02,538 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:12:02,538 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:12:02,538 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:12:02,538 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:12:02,540 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:12:02,540 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:12:02,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-13 01:12:02,553 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:12:02,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-13 01:12:02,601 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:12:02,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:12:02,604 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:12:02,611 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:12:02,623 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:12:02,623 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:12:02,623 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:12:02,623 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:12:02,624 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:12:02,626 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:12:02,627 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:12:02,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-13 01:12:02,642 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:12:02,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-13 01:12:02,674 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:12:02,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:12:02,675 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:12:02,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-13 01:12:02,683 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:12:02,696 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:12:02,697 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:12:02,697 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:12:02,697 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:12:02,697 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:12:02,699 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:12:02,699 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:12:02,716 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:12:02,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-13 01:12:02,764 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:12:02,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:12:02,769 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:12:02,776 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:12:02,788 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:12:02,789 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:12:02,789 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:12:02,789 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:12:02,789 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:12:02,791 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:12:02,791 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:12:02,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-13 01:12:02,794 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:12:02,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-13 01:12:02,844 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:12:02,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:12:02,848 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:12:02,855 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:12:02,867 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:12:02,868 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:12:02,868 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:12:02,868 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:12:02,868 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:12:02,871 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:12:02,871 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:12:02,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-13 01:12:02,888 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:12:02,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-13 01:12:02,942 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:12:02,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:12:02,944 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:12:02,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-13 01:12:02,949 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:12:02,964 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:12:02,965 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:12:02,965 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-13 01:12:02,965 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:12:03,000 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2021-10-13 01:12:03,001 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2021-10-13 01:12:03,028 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 01:12:03,082 INFO L443 ModelExtractionUtils]: Simplification made 10 calls to the SMT solver. [2021-10-13 01:12:03,082 INFO L444 ModelExtractionUtils]: 3 out of 11 variables were initially zero. Simplification set additionally 5 variables to zero. [2021-10-13 01:12:03,084 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:12:03,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:12:03,087 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:12:03,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-13 01:12:03,111 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 01:12:03,142 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2021-10-13 01:12:03,143 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 01:12:03,144 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(new_ll_#in~n) = 1*new_ll_#in~n Supporting invariants [1*new_ll_#in~n >= 0] [2021-10-13 01:12:03,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-13 01:12:03,188 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2021-10-13 01:12:03,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:12:03,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:12:03,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 01:12:03,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:12:03,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:12:03,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 01:12:03,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:12:03,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:12:03,508 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2021-10-13 01:12:03,510 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 27 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-10-13 01:12:03,723 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 27 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4). Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 45 states and 54 transitions. Complement of second has 13 states. [2021-10-13 01:12:03,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-13 01:12:03,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-10-13 01:12:03,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2021-10-13 01:12:03,730 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 4 letters. Loop has 3 letters. [2021-10-13 01:12:03,733 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:12:03,735 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 7 letters. Loop has 3 letters. [2021-10-13 01:12:03,735 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:12:03,736 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 4 letters. Loop has 6 letters. [2021-10-13 01:12:03,736 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:12:03,737 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 54 transitions. [2021-10-13 01:12:03,755 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2021-10-13 01:12:03,766 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 29 states and 37 transitions. [2021-10-13 01:12:03,768 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2021-10-13 01:12:03,768 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2021-10-13 01:12:03,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 37 transitions. [2021-10-13 01:12:03,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:12:03,771 INFO L681 BuchiCegarLoop]: Abstraction has 29 states and 37 transitions. [2021-10-13 01:12:03,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 37 transitions. [2021-10-13 01:12:03,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2021-10-13 01:12:03,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 20 states have (on average 1.25) internal successors, (25), 21 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-13 01:12:03,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2021-10-13 01:12:03,821 INFO L704 BuchiCegarLoop]: Abstraction has 27 states and 33 transitions. [2021-10-13 01:12:03,821 INFO L587 BuchiCegarLoop]: Abstraction has 27 states and 33 transitions. [2021-10-13 01:12:03,821 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-13 01:12:03,822 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 33 transitions. [2021-10-13 01:12:03,827 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2021-10-13 01:12:03,827 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:12:03,827 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:12:03,829 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:12:03,829 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-13 01:12:03,830 INFO L791 eck$LassoCheckResult]: Stem: 146#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 147#L-1 havoc main_#res;havoc main_#t~nondet8, main_#t~ret9.base, main_#t~ret9.offset, main_#t~ret10.base, main_#t~ret10.offset, main_#t~ret11, main_~n~0, main_~x~0.base, main_~x~0.offset, main_~y~0.base, main_~y~0.offset, main_~y_length~0;main_~n~0 := main_#t~nondet8;havoc main_#t~nondet8; 154#L574 assume !(main_~n~0 < 1); 143#L577 call main_#t~ret9.base, main_#t~ret9.offset := new_ll(main_~n~0);< 162#new_llENTRY ~n := #in~n; 163#L548 assume 0 == ~n;#res.base, #res.offset := 0, 0; 165#new_llFINAL assume true; 159#new_llEXIT >#57#return; 157#L577-1 main_~x~0.base, main_~x~0.offset := main_#t~ret9.base, main_#t~ret9.offset;havoc main_#t~ret9.base, main_#t~ret9.offset;append_#in~x.base, append_#in~x.offset, append_#in~y.base, append_#in~y.offset := main_~x~0.base, main_~x~0.offset, main_~x~0.base, main_~x~0.offset;havoc append_#res.base, append_#res.offset;havoc append_#t~mem7.base, append_#t~mem7.offset, append_#t~mem6.base, append_#t~mem6.offset, append_~x.base, append_~x.offset, append_~y.base, append_~y.offset, append_~s~0.base, append_~s~0.offset;append_~x.base, append_~x.offset := append_#in~x.base, append_#in~x.offset;append_~y.base, append_~y.offset := append_#in~y.base, append_#in~y.offset; 158#L563 assume !(append_~x.base == 0 && append_~x.offset == 0);append_~s~0.base, append_~s~0.offset := append_~x.base, append_~x.offset; 160#L566-3 [2021-10-13 01:12:03,830 INFO L793 eck$LassoCheckResult]: Loop: 160#L566-3 call append_#t~mem6.base, append_#t~mem6.offset := read~$Pointer$(append_~x.base, 4 + append_~x.offset, 8); 161#L566-1 assume !!(append_#t~mem6.base != 0 || append_#t~mem6.offset != 0);havoc append_#t~mem6.base, append_#t~mem6.offset;call append_#t~mem7.base, append_#t~mem7.offset := read~$Pointer$(append_~x.base, 4 + append_~x.offset, 8);append_~x.base, append_~x.offset := append_#t~mem7.base, append_#t~mem7.offset;havoc append_#t~mem7.base, append_#t~mem7.offset; 160#L566-3 [2021-10-13 01:12:03,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:12:03,831 INFO L82 PathProgramCache]: Analyzing trace with hash 772923198, now seen corresponding path program 1 times [2021-10-13 01:12:03,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:12:03,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006299973] [2021-10-13 01:12:03,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:12:03,832 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:12:03,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:12:04,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 01:12:04,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:12:04,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:12:04,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:12:04,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006299973] [2021-10-13 01:12:04,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006299973] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:12:04,037 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:12:04,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 01:12:04,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956983460] [2021-10-13 01:12:04,042 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-13 01:12:04,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:12:04,043 INFO L82 PathProgramCache]: Analyzing trace with hash 2086, now seen corresponding path program 1 times [2021-10-13 01:12:04,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:12:04,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005250623] [2021-10-13 01:12:04,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:12:04,045 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:12:04,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:12:04,054 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:12:04,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:12:04,062 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:12:04,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:12:04,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 01:12:04,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 01:12:04,139 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. cyclomatic complexity: 9 Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:12:04,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:12:04,289 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2021-10-13 01:12:04,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 01:12:04,291 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 31 transitions. [2021-10-13 01:12:04,293 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2021-10-13 01:12:04,295 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 24 states and 28 transitions. [2021-10-13 01:12:04,295 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2021-10-13 01:12:04,296 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2021-10-13 01:12:04,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 28 transitions. [2021-10-13 01:12:04,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:12:04,296 INFO L681 BuchiCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-10-13 01:12:04,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 28 transitions. [2021-10-13 01:12:04,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-13 01:12:04,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-13 01:12:04,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2021-10-13 01:12:04,302 INFO L704 BuchiCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-10-13 01:12:04,302 INFO L587 BuchiCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-10-13 01:12:04,302 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-13 01:12:04,302 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 28 transitions. [2021-10-13 01:12:04,304 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2021-10-13 01:12:04,304 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:12:04,304 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:12:04,305 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:12:04,306 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-13 01:12:04,306 INFO L791 eck$LassoCheckResult]: Stem: 217#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 218#L-1 havoc main_#res;havoc main_#t~nondet8, main_#t~ret9.base, main_#t~ret9.offset, main_#t~ret10.base, main_#t~ret10.offset, main_#t~ret11, main_~n~0, main_~x~0.base, main_~x~0.offset, main_~y~0.base, main_~y~0.offset, main_~y_length~0;main_~n~0 := main_#t~nondet8;havoc main_#t~nondet8; 225#L574 assume !(main_~n~0 < 1); 213#L577 call main_#t~ret9.base, main_#t~ret9.offset := new_ll(main_~n~0);< 232#new_llENTRY ~n := #in~n; 224#L548 assume !(0 == ~n);call #t~malloc2.base, #t~malloc2.offset := #Ultimate.allocOnHeap(12);~head~0.base, ~head~0.offset := #t~malloc2.base, #t~malloc2.offset;havoc #t~malloc2.base, #t~malloc2.offset;call write~int(~n, ~head~0.base, ~head~0.offset, 4); 212#L552 call #t~ret3.base, #t~ret3.offset := new_ll(~n - 1);< 233#new_llENTRY ~n := #in~n; 222#L548 assume 0 == ~n;#res.base, #res.offset := 0, 0; 223#new_llFINAL assume true; 226#new_llEXIT >#53#return; 211#L552-1 call write~$Pointer$(#t~ret3.base, #t~ret3.offset, ~head~0.base, 4 + ~head~0.offset, 8);havoc #t~ret3.base, #t~ret3.offset;#res.base, #res.offset := ~head~0.base, ~head~0.offset; 214#new_llFINAL assume true; 234#new_llEXIT >#57#return; 228#L577-1 main_~x~0.base, main_~x~0.offset := main_#t~ret9.base, main_#t~ret9.offset;havoc main_#t~ret9.base, main_#t~ret9.offset;append_#in~x.base, append_#in~x.offset, append_#in~y.base, append_#in~y.offset := main_~x~0.base, main_~x~0.offset, main_~x~0.base, main_~x~0.offset;havoc append_#res.base, append_#res.offset;havoc append_#t~mem7.base, append_#t~mem7.offset, append_#t~mem6.base, append_#t~mem6.offset, append_~x.base, append_~x.offset, append_~y.base, append_~y.offset, append_~s~0.base, append_~s~0.offset;append_~x.base, append_~x.offset := append_#in~x.base, append_#in~x.offset;append_~y.base, append_~y.offset := append_#in~y.base, append_#in~y.offset; 229#L563 assume !(append_~x.base == 0 && append_~x.offset == 0);append_~s~0.base, append_~s~0.offset := append_~x.base, append_~x.offset; 230#L566-3 [2021-10-13 01:12:04,306 INFO L793 eck$LassoCheckResult]: Loop: 230#L566-3 call append_#t~mem6.base, append_#t~mem6.offset := read~$Pointer$(append_~x.base, 4 + append_~x.offset, 8); 231#L566-1 assume !!(append_#t~mem6.base != 0 || append_#t~mem6.offset != 0);havoc append_#t~mem6.base, append_#t~mem6.offset;call append_#t~mem7.base, append_#t~mem7.offset := read~$Pointer$(append_~x.base, 4 + append_~x.offset, 8);append_~x.base, append_~x.offset := append_#t~mem7.base, append_#t~mem7.offset;havoc append_#t~mem7.base, append_#t~mem7.offset; 230#L566-3 [2021-10-13 01:12:04,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:12:04,307 INFO L82 PathProgramCache]: Analyzing trace with hash 704779872, now seen corresponding path program 1 times [2021-10-13 01:12:04,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:12:04,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547443155] [2021-10-13 01:12:04,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:12:04,309 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:12:04,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:12:04,351 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:12:04,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2021-10-13 01:12:04,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:12:04,439 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:12:04,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:12:04,439 INFO L82 PathProgramCache]: Analyzing trace with hash 2086, now seen corresponding path program 2 times [2021-10-13 01:12:04,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:12:04,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307647236] [2021-10-13 01:12:04,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:12:04,440 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:12:04,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:12:04,447 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:12:04,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:12:04,470 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:12:04,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:12:04,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1311374651, now seen corresponding path program 1 times [2021-10-13 01:12:04,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:12:04,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178062051] [2021-10-13 01:12:04,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:12:04,474 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:12:04,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:12:04,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 01:12:04,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:12:04,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-13 01:12:04,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:12:04,849 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 01:12:04,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:12:04,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178062051] [2021-10-13 01:12:04,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178062051] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:12:04,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093636680] [2021-10-13 01:12:04,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:12:04,851 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:12:04,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:12:04,853 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:12:04,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-13 01:12:04,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:12:04,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-13 01:12:04,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:12:05,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 01:12:05,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-13 01:12:05,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-13 01:12:05,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 26 [2021-10-13 01:12:05,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2021-10-13 01:12:05,547 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:12:05,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093636680] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:12:05,547 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:12:05,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2021-10-13 01:12:05,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320858922] [2021-10-13 01:12:05,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:12:05,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 01:12:05,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-10-13 01:12:05,613 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. cyclomatic complexity: 7 Second operand has 16 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 11 states have internal predecessors, (23), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-13 01:12:05,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:12:05,914 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2021-10-13 01:12:05,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 01:12:05,915 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 40 transitions. [2021-10-13 01:12:05,917 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2021-10-13 01:12:05,919 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 34 states and 40 transitions. [2021-10-13 01:12:05,919 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2021-10-13 01:12:05,919 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2021-10-13 01:12:05,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 40 transitions. [2021-10-13 01:12:05,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:12:05,920 INFO L681 BuchiCegarLoop]: Abstraction has 34 states and 40 transitions. [2021-10-13 01:12:05,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 40 transitions. [2021-10-13 01:12:05,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2021-10-13 01:12:05,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 23 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-13 01:12:05,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2021-10-13 01:12:05,925 INFO L704 BuchiCegarLoop]: Abstraction has 31 states and 37 transitions. [2021-10-13 01:12:05,925 INFO L587 BuchiCegarLoop]: Abstraction has 31 states and 37 transitions. [2021-10-13 01:12:05,926 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-13 01:12:05,926 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 37 transitions. [2021-10-13 01:12:05,927 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2021-10-13 01:12:05,927 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:12:05,927 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:12:05,929 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:12:05,929 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-13 01:12:05,929 INFO L791 eck$LassoCheckResult]: Stem: 367#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 368#L-1 havoc main_#res;havoc main_#t~nondet8, main_#t~ret9.base, main_#t~ret9.offset, main_#t~ret10.base, main_#t~ret10.offset, main_#t~ret11, main_~n~0, main_~x~0.base, main_~x~0.offset, main_~y~0.base, main_~y~0.offset, main_~y_length~0;main_~n~0 := main_#t~nondet8;havoc main_#t~nondet8; 375#L574 assume !(main_~n~0 < 1); 362#L577 call main_#t~ret9.base, main_#t~ret9.offset := new_ll(main_~n~0);< 384#new_llENTRY ~n := #in~n; 374#L548 assume !(0 == ~n);call #t~malloc2.base, #t~malloc2.offset := #Ultimate.allocOnHeap(12);~head~0.base, ~head~0.offset := #t~malloc2.base, #t~malloc2.offset;havoc #t~malloc2.base, #t~malloc2.offset;call write~int(~n, ~head~0.base, ~head~0.offset, 4); 363#L552 call #t~ret3.base, #t~ret3.offset := new_ll(~n - 1);< 385#new_llENTRY ~n := #in~n; 372#L548 assume 0 == ~n;#res.base, #res.offset := 0, 0; 373#new_llFINAL assume true; 380#new_llEXIT >#53#return; 381#L552-1 call write~$Pointer$(#t~ret3.base, #t~ret3.offset, ~head~0.base, 4 + ~head~0.offset, 8);havoc #t~ret3.base, #t~ret3.offset;#res.base, #res.offset := ~head~0.base, ~head~0.offset; 391#new_llFINAL assume true; 390#new_llEXIT >#57#return; 378#L577-1 main_~x~0.base, main_~x~0.offset := main_#t~ret9.base, main_#t~ret9.offset;havoc main_#t~ret9.base, main_#t~ret9.offset;append_#in~x.base, append_#in~x.offset, append_#in~y.base, append_#in~y.offset := main_~x~0.base, main_~x~0.offset, main_~x~0.base, main_~x~0.offset;havoc append_#res.base, append_#res.offset;havoc append_#t~mem7.base, append_#t~mem7.offset, append_#t~mem6.base, append_#t~mem6.offset, append_~x.base, append_~x.offset, append_~y.base, append_~y.offset, append_~s~0.base, append_~s~0.offset;append_~x.base, append_~x.offset := append_#in~x.base, append_#in~x.offset;append_~y.base, append_~y.offset := append_#in~y.base, append_#in~y.offset; 379#L563 assume append_~x.base == 0 && append_~x.offset == 0;append_#res.base, append_#res.offset := append_~y.base, append_~y.offset; 365#L569 main_#t~ret10.base, main_#t~ret10.offset := append_#res.base, append_#res.offset;main_~y~0.base, main_~y~0.offset := main_#t~ret10.base, main_#t~ret10.offset;havoc main_#t~ret10.base, main_#t~ret10.offset; 366#L579 call main_#t~ret11 := length(main_~y~0.base, main_~y~0.offset);< 377#lengthENTRY [2021-10-13 01:12:05,930 INFO L793 eck$LassoCheckResult]: Loop: 377#lengthENTRY ~xs.base, ~xs.offset := #in~xs.base, #in~xs.offset; 370#L557 assume !(~xs.base == 0 && ~xs.offset == 0);call #t~mem4.base, #t~mem4.offset := read~$Pointer$(~xs.base, 4 + ~xs.offset, 8); 371#L559 call #t~ret5 := length(#t~mem4.base, #t~mem4.offset);< 377#lengthENTRY [2021-10-13 01:12:05,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:12:05,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1311376214, now seen corresponding path program 1 times [2021-10-13 01:12:05,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:12:05,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759963347] [2021-10-13 01:12:05,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:12:05,931 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:12:05,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:12:05,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 01:12:05,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:12:06,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-13 01:12:06,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:12:06,042 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 01:12:06,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:12:06,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759963347] [2021-10-13 01:12:06,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759963347] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:12:06,043 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:12:06,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 01:12:06,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68651336] [2021-10-13 01:12:06,044 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-13 01:12:06,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:12:06,045 INFO L82 PathProgramCache]: Analyzing trace with hash 37905, now seen corresponding path program 1 times [2021-10-13 01:12:06,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:12:06,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004067064] [2021-10-13 01:12:06,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:12:06,046 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:12:06,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:12:06,051 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:12:06,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:12:06,057 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:12:06,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:12:06,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 01:12:06,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-13 01:12:06,238 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. cyclomatic complexity: 9 Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-13 01:12:06,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:12:06,336 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2021-10-13 01:12:06,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 01:12:06,337 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 41 transitions. [2021-10-13 01:12:06,339 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2021-10-13 01:12:06,341 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 36 states and 41 transitions. [2021-10-13 01:12:06,341 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2021-10-13 01:12:06,342 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2021-10-13 01:12:06,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 41 transitions. [2021-10-13 01:12:06,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:12:06,343 INFO L681 BuchiCegarLoop]: Abstraction has 36 states and 41 transitions. [2021-10-13 01:12:06,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 41 transitions. [2021-10-13 01:12:06,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 31. [2021-10-13 01:12:06,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 23 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-13 01:12:06,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2021-10-13 01:12:06,350 INFO L704 BuchiCegarLoop]: Abstraction has 31 states and 35 transitions. [2021-10-13 01:12:06,350 INFO L587 BuchiCegarLoop]: Abstraction has 31 states and 35 transitions. [2021-10-13 01:12:06,350 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-13 01:12:06,350 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 35 transitions. [2021-10-13 01:12:06,352 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2021-10-13 01:12:06,352 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:12:06,352 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:12:06,353 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:12:06,353 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-13 01:12:06,354 INFO L791 eck$LassoCheckResult]: Stem: 461#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 462#L-1 havoc main_#res;havoc main_#t~nondet8, main_#t~ret9.base, main_#t~ret9.offset, main_#t~ret10.base, main_#t~ret10.offset, main_#t~ret11, main_~n~0, main_~x~0.base, main_~x~0.offset, main_~y~0.base, main_~y~0.offset, main_~y_length~0;main_~n~0 := main_#t~nondet8;havoc main_#t~nondet8; 469#L574 assume !(main_~n~0 < 1); 459#L577 call main_#t~ret9.base, main_#t~ret9.offset := new_ll(main_~n~0);< 479#new_llENTRY ~n := #in~n; 468#L548 assume !(0 == ~n);call #t~malloc2.base, #t~malloc2.offset := #Ultimate.allocOnHeap(12);~head~0.base, ~head~0.offset := #t~malloc2.base, #t~malloc2.offset;havoc #t~malloc2.base, #t~malloc2.offset;call write~int(~n, ~head~0.base, ~head~0.offset, 4); 458#L552 call #t~ret3.base, #t~ret3.offset := new_ll(~n - 1);< 480#new_llENTRY ~n := #in~n; 466#L548 assume 0 == ~n;#res.base, #res.offset := 0, 0; 467#new_llFINAL assume true; 475#new_llEXIT >#53#return; 476#L552-1 call write~$Pointer$(#t~ret3.base, #t~ret3.offset, ~head~0.base, 4 + ~head~0.offset, 8);havoc #t~ret3.base, #t~ret3.offset;#res.base, #res.offset := ~head~0.base, ~head~0.offset; 485#new_llFINAL assume true; 482#new_llEXIT >#57#return; 472#L577-1 main_~x~0.base, main_~x~0.offset := main_#t~ret9.base, main_#t~ret9.offset;havoc main_#t~ret9.base, main_#t~ret9.offset;append_#in~x.base, append_#in~x.offset, append_#in~y.base, append_#in~y.offset := main_~x~0.base, main_~x~0.offset, main_~x~0.base, main_~x~0.offset;havoc append_#res.base, append_#res.offset;havoc append_#t~mem7.base, append_#t~mem7.offset, append_#t~mem6.base, append_#t~mem6.offset, append_~x.base, append_~x.offset, append_~y.base, append_~y.offset, append_~s~0.base, append_~s~0.offset;append_~x.base, append_~x.offset := append_#in~x.base, append_#in~x.offset;append_~y.base, append_~y.offset := append_#in~y.base, append_#in~y.offset; 473#L563 assume !(append_~x.base == 0 && append_~x.offset == 0);append_~s~0.base, append_~s~0.offset := append_~x.base, append_~x.offset; 483#L566-3 call append_#t~mem6.base, append_#t~mem6.offset := read~$Pointer$(append_~x.base, 4 + append_~x.offset, 8); 474#L566-1 assume !(append_#t~mem6.base != 0 || append_#t~mem6.offset != 0);havoc append_#t~mem6.base, append_#t~mem6.offset; 463#L566-4 call write~$Pointer$(append_~y.base, append_~y.offset, append_~x.base, 4 + append_~x.offset, 8);append_#res.base, append_#res.offset := append_~s~0.base, append_~s~0.offset; 455#L569 main_#t~ret10.base, main_#t~ret10.offset := append_#res.base, append_#res.offset;main_~y~0.base, main_~y~0.offset := main_#t~ret10.base, main_#t~ret10.offset;havoc main_#t~ret10.base, main_#t~ret10.offset; 456#L579 call main_#t~ret11 := length(main_~y~0.base, main_~y~0.offset);< 470#lengthENTRY [2021-10-13 01:12:06,354 INFO L793 eck$LassoCheckResult]: Loop: 470#lengthENTRY ~xs.base, ~xs.offset := #in~xs.base, #in~xs.offset; 464#L557 assume !(~xs.base == 0 && ~xs.offset == 0);call #t~mem4.base, #t~mem4.offset := read~$Pointer$(~xs.base, 4 + ~xs.offset, 8); 465#L559 call #t~ret5 := length(#t~mem4.base, #t~mem4.offset);< 470#lengthENTRY [2021-10-13 01:12:06,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:12:06,355 INFO L82 PathProgramCache]: Analyzing trace with hash -139719339, now seen corresponding path program 1 times [2021-10-13 01:12:06,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:12:06,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644582477] [2021-10-13 01:12:06,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:12:06,356 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:12:06,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:12:06,381 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:12:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:12:06,409 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:12:06,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:12:06,410 INFO L82 PathProgramCache]: Analyzing trace with hash 37905, now seen corresponding path program 2 times [2021-10-13 01:12:06,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:12:06,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148118463] [2021-10-13 01:12:06,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:12:06,411 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:12:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:12:06,417 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:12:06,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:12:06,422 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:12:06,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:12:06,423 INFO L82 PathProgramCache]: Analyzing trace with hash -555510211, now seen corresponding path program 1 times [2021-10-13 01:12:06,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:12:06,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029023881] [2021-10-13 01:12:06,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:12:06,424 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:12:06,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:12:06,449 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:12:06,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:12:06,477 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:12:09,209 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: line 74133 column 524: unknown constant v_DerPreprocessor_2 at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1458) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:237) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:256) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.assertTerm(Scriptor.java:147) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.assertTerm(DiffWrapperScript.java:111) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.assertTerm(WrapperScript.java:158) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.assertTerm(ManagedScript.java:133) at de.uni_freiburg.informatik.ultimate.lassoranker.nontermination.FixpointCheck.checkForFixpoint(FixpointCheck.java:100) at de.uni_freiburg.informatik.ultimate.lassoranker.nontermination.FixpointCheck.(FixpointCheck.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.synthesize(LassoCheck.java:560) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.checkLassoTermination(LassoCheck.java:953) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.(LassoCheck.java:862) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.(LassoCheck.java:252) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoop.iterate(BuchiCegarLoop.java:457) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.doTerminationAnalysis(BuchiAutomizerObserver.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.finish(BuchiAutomizerObserver.java:398) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-13 01:12:09,213 INFO L168 Benchmark]: Toolchain (without parser) took 10469.94 ms. Allocated memory was 86.0 MB in the beginning and 161.5 MB in the end (delta: 75.5 MB). Free memory was 51.9 MB in the beginning and 85.5 MB in the end (delta: -33.6 MB). Peak memory consumption was 61.4 MB. Max. memory is 16.1 GB. [2021-10-13 01:12:09,213 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 86.0 MB. Free memory was 60.4 MB in the beginning and 60.3 MB in the end (delta: 27.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:12:09,214 INFO L168 Benchmark]: CACSL2BoogieTranslator took 663.51 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 51.7 MB in the beginning and 82.5 MB in the end (delta: -30.7 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. [2021-10-13 01:12:09,215 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.10 ms. Allocated memory is still 111.1 MB. Free memory was 82.1 MB in the beginning and 80.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:12:09,215 INFO L168 Benchmark]: Boogie Preprocessor took 38.74 ms. Allocated memory is still 111.1 MB. Free memory was 80.6 MB in the beginning and 79.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:12:09,216 INFO L168 Benchmark]: RCFGBuilder took 558.42 ms. Allocated memory is still 111.1 MB. Free memory was 79.2 MB in the beginning and 68.0 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 01:12:09,217 INFO L168 Benchmark]: BuchiAutomizer took 9140.34 ms. Allocated memory was 111.1 MB in the beginning and 161.5 MB in the end (delta: 50.3 MB). Free memory was 68.0 MB in the beginning and 85.5 MB in the end (delta: -17.6 MB). Peak memory consumption was 55.6 MB. Max. memory is 16.1 GB. [2021-10-13 01:12:09,220 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 86.0 MB. Free memory was 60.4 MB in the beginning and 60.3 MB in the end (delta: 27.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 663.51 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 51.7 MB in the beginning and 82.5 MB in the end (delta: -30.7 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.10 ms. Allocated memory is still 111.1 MB. Free memory was 82.1 MB in the beginning and 80.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.74 ms. Allocated memory is still 111.1 MB. Free memory was 80.6 MB in the beginning and 79.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 558.42 ms. Allocated memory is still 111.1 MB. Free memory was 79.2 MB in the beginning and 68.0 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 9140.34 ms. Allocated memory was 111.1 MB in the beginning and 161.5 MB in the end (delta: 50.3 MB). Free memory was 68.0 MB in the beginning and 85.5 MB in the end (delta: -17.6 MB). Peak memory consumption was 55.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - ExceptionOrErrorResult: SMTLIBException: line 74133 column 524: unknown constant v_DerPreprocessor_2 de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: SMTLIBException: line 74133 column 524: unknown constant v_DerPreprocessor_2: de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1458) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 01:12:09,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-13 01:12:09,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300bff30-2350-4eea-8de9-b83e39857fb0/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 1 Received shutdown request...