./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 b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/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_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a94e514ac338898e2e1e54a42b19ae4490ac5c412319209fc14736a6de9b7386 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:20:08,944 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:20:08,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:20:08,996 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:20:08,997 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:20:08,998 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:20:09,000 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:20:09,003 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:20:09,005 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:20:09,006 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:20:09,007 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:20:09,009 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:20:09,009 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:20:09,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:20:09,012 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:20:09,014 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:20:09,015 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:20:09,016 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:20:09,018 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:20:09,021 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:20:09,023 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:20:09,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:20:09,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:20:09,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:20:09,031 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:20:09,031 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:20:09,032 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:20:09,033 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:20:09,034 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:20:09,035 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:20:09,035 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:20:09,036 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:20:09,037 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:20:09,038 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:20:09,040 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:20:09,040 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:20:09,041 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:20:09,041 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:20:09,042 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:20:09,043 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:20:09,044 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:20:09,049 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-28 23:20:09,077 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:20:09,078 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:20:09,078 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:20:09,078 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:20:09,079 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:20:09,080 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:20:09,080 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:20:09,080 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 23:20:09,081 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 23:20:09,081 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 23:20:09,081 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 23:20:09,081 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 23:20:09,082 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 23:20:09,082 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:20:09,082 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:20:09,082 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:20:09,083 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:20:09,083 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 23:20:09,083 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 23:20:09,083 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 23:20:09,084 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:20:09,084 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 23:20:09,084 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:20:09,084 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 23:20:09,085 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:20:09,085 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:20:09,085 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:20:09,086 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:20:09,086 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:20:09,087 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 23:20:09,087 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_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a94e514ac338898e2e1e54a42b19ae4490ac5c412319209fc14736a6de9b7386 [2021-10-28 23:20:09,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:20:09,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:20:09,370 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:20:09,372 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:20:09,372 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:20:09,374 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/termination-memory-linkedlists/ll_append-alloca-2.i [2021-10-28 23:20:09,447 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/data/effeac08e/5e23871544d44061bde97b08291bdef0/FLAG6d62e407d [2021-10-28 23:20:10,006 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:20:10,007 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/sv-benchmarks/c/termination-memory-linkedlists/ll_append-alloca-2.i [2021-10-28 23:20:10,020 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/data/effeac08e/5e23871544d44061bde97b08291bdef0/FLAG6d62e407d [2021-10-28 23:20:10,309 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/data/effeac08e/5e23871544d44061bde97b08291bdef0 [2021-10-28 23:20:10,312 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:20:10,316 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:20:10,322 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:20:10,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:20:10,326 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:20:10,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:20:10" (1/1) ... [2021-10-28 23:20:10,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31d6f997 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:10, skipping insertion in model container [2021-10-28 23:20:10,331 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:20:10" (1/1) ... [2021-10-28 23:20:10,338 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:20:10,385 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:20:10,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:20:10,736 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:20:10,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:20:10,821 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:20:10,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:10 WrapperNode [2021-10-28 23:20:10,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:20:10,823 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:20:10,823 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:20:10,824 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:20:10,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:10" (1/1) ... [2021-10-28 23:20:10,859 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:10" (1/1) ... [2021-10-28 23:20:10,880 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:20:10,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:20:10,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:20:10,881 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:20:10,890 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:10" (1/1) ... [2021-10-28 23:20:10,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:10" (1/1) ... [2021-10-28 23:20:10,894 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:10" (1/1) ... [2021-10-28 23:20:10,894 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:10" (1/1) ... [2021-10-28 23:20:10,901 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:10" (1/1) ... [2021-10-28 23:20:10,905 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:10" (1/1) ... [2021-10-28 23:20:10,906 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:10" (1/1) ... [2021-10-28 23:20:10,909 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:20:10,910 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:20:10,910 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:20:10,910 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:20:10,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:10" (1/1) ... [2021-10-28 23:20:10,925 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:20:10,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:20:10,949 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:20:10,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 23:20:11,002 INFO L130 BoogieDeclarations]: Found specification of procedure new_ll [2021-10-28 23:20:11,003 INFO L138 BoogieDeclarations]: Found implementation of procedure new_ll [2021-10-28 23:20:11,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 23:20:11,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 23:20:11,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 23:20:11,003 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 23:20:11,003 INFO L130 BoogieDeclarations]: Found specification of procedure length [2021-10-28 23:20:11,003 INFO L138 BoogieDeclarations]: Found implementation of procedure length [2021-10-28 23:20:11,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:20:11,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:20:11,286 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:20:11,287 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-28 23:20:11,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:20:11 BoogieIcfgContainer [2021-10-28 23:20:11,289 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:20:11,289 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 23:20:11,290 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 23:20:11,296 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 23:20:11,296 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:20:11,297 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 11:20:10" (1/3) ... [2021-10-28 23:20:11,298 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5c20a759 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:20:11, skipping insertion in model container [2021-10-28 23:20:11,298 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:20:11,298 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:10" (2/3) ... [2021-10-28 23:20:11,299 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5c20a759 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:20:11, skipping insertion in model container [2021-10-28 23:20:11,299 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:20:11,299 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:20:11" (3/3) ... [2021-10-28 23:20:11,302 INFO L389 chiAutomizerObserver]: Analyzing ICFG ll_append-alloca-2.i [2021-10-28 23:20:11,359 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 23:20:11,359 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 23:20:11,359 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 23:20:11,359 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 23:20:11,359 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 23:20:11,360 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 23:20:11,360 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 23:20:11,360 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 23:20:11,377 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) [2021-10-28 23:20:11,400 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 8 [2021-10-28 23:20:11,401 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:20:11,401 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:20:11,407 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-28 23:20:11,407 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 23:20:11,407 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 23:20:11,407 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) [2021-10-28 23:20:11,410 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 8 [2021-10-28 23:20:11,411 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:20:11,411 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:20:11,411 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-28 23:20:11,411 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 23:20:11,417 INFO L791 eck$LassoCheckResult]: Stem: 17#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 8#L-1true havoc main_#res;havoc main_#t~nondet8, main_#t~ret9.base, main_#t~ret9.offset, main_#t~ret10.base, main_#t~ret10.offset, main_#t~ret11, main_~n~0, main_~x~0.base, main_~x~0.offset, main_~y~0.base, main_~y~0.offset, main_~y_length~0;main_~n~0 := main_#t~nondet8;havoc main_#t~nondet8; 15#L574true assume !(main_~n~0 < 1); 27#L577true call main_#t~ret9.base, main_#t~ret9.offset := new_ll(main_~n~0);< 14#new_llENTRYtrue [2021-10-28 23:20:11,417 INFO L793 eck$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 [2021-10-28 23:20:11,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:20:11,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1418244, now seen corresponding path program 1 times [2021-10-28 23:20:11,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:20:11,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032053014] [2021-10-28 23:20:11,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:11,437 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:20:11,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:11,525 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:20:11,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:11,555 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:20:11,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:20:11,558 INFO L85 PathProgramCache]: Analyzing trace with hash 29967, now seen corresponding path program 1 times [2021-10-28 23:20:11,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:20:11,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439053286] [2021-10-28 23:20:11,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:11,559 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:20:11,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:11,588 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:20:11,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:11,611 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:20:11,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:20:11,613 INFO L85 PathProgramCache]: Analyzing trace with hash -698765780, now seen corresponding path program 1 times [2021-10-28 23:20:11,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:20:11,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737465851] [2021-10-28 23:20:11,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:11,614 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:20:11,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:11,636 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:20:11,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:11,682 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:20:12,776 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:20:12,777 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:20:12,777 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:20:12,777 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:20:12,777 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:20:12,777 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:20:12,778 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:20:12,779 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:20:12,779 INFO L133 ssoRankerPreferences]: Filename of dumped script: ll_append-alloca-2.i_Iteration1_Lasso [2021-10-28 23:20:12,779 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:20:12,780 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:20:12,811 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:12,817 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:12,819 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:12,827 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:12,830 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:12,833 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:12,837 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:12,882 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:12,884 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:12,886 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:12,889 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:12,891 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:12,893 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:12,895 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:12,897 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:12,899 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:12,901 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:12,904 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:12,906 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:12,908 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:12,910 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:12,912 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:12,919 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:12,921 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:12,923 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:12,925 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:12,928 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:12,930 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:12,932 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:12,935 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:12,937 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:12,939 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:12,942 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:12,947 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:12,950 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:12,952 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:12,954 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:12,956 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:12,958 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:12,960 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:12,962 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:12,965 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:12,973 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:12,977 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:13,207 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:20:13,212 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:20:13,214 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:20:13,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:20:13,219 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:20:13,232 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:20:13,242 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:20:13,242 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:20:13,243 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:20:13,243 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:20:13,243 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:20:13,245 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:20:13,245 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:20:13,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-28 23:20:13,264 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:20:13,291 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2021-10-28 23:20:13,292 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:20:13,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:20:13,293 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:20:13,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-28 23:20:13,295 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:20:13,303 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:20:13,303 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:20:13,303 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:20:13,303 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:20:13,303 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:20:13,304 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:20:13,304 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:20:13,331 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:20:13,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:20:13,364 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:20:13,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:20:13,368 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:20:13,372 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:20:13,381 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:20:13,381 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:20:13,381 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:20:13,381 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:20:13,381 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:20:13,382 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:20:13,382 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:20:13,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-28 23:20:13,407 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:20:13,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:20:13,431 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:20:13,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:20:13,432 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:20:13,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-28 23:20:13,434 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:20:13,441 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:20:13,441 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:20:13,441 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:20:13,442 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:20:13,442 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:20:13,443 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:20:13,443 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:20:13,467 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:20:13,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-28 23:20:13,503 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:20:13,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:20:13,505 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:20:13,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-28 23:20:13,507 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:20:13,514 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:20:13,514 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:20:13,514 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:20:13,514 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:20:13,514 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:20:13,515 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:20:13,515 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:20:13,538 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:20:13,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-28 23:20:13,559 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:20:13,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:20:13,560 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:20:13,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-28 23:20:13,567 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:20:13,574 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:20:13,574 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:20:13,574 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:20:13,574 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:20:13,574 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:20:13,575 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:20:13,575 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:20:13,577 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:20:13,600 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2021-10-28 23:20:13,600 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:20:13,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:20:13,602 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:20:13,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-28 23:20:13,606 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:20:13,615 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:20:13,615 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:20:13,616 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-28 23:20:13,616 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:20:13,626 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2021-10-28 23:20:13,626 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2021-10-28 23:20:13,646 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:20:13,670 INFO L443 ModelExtractionUtils]: Simplification made 10 calls to the SMT solver. [2021-10-28 23:20:13,671 INFO L444 ModelExtractionUtils]: 3 out of 11 variables were initially zero. Simplification set additionally 5 variables to zero. [2021-10-28 23:20:13,672 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:20:13,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:20:13,689 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:20:13,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-28 23:20:13,727 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:20:13,751 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2021-10-28 23:20:13,751 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:20:13,751 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] [2021-10-28 23:20:13,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-28 23:20:13,800 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2021-10-28 23:20:13,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:20:13,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:20:13,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 23:20:13,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:20:13,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:20:13,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 23:20:13,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:20:13,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:20:14,001 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 [2021-10-28 23:20:14,002 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) [2021-10-28 23:20:14,166 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. [2021-10-28 23:20:14,167 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 [2021-10-28 23:20:14,169 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) [2021-10-28 23:20:14,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2021-10-28 23:20:14,171 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 4 letters. Loop has 3 letters. [2021-10-28 23:20:14,175 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:20:14,175 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 7 letters. Loop has 3 letters. [2021-10-28 23:20:14,175 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:20:14,175 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 4 letters. Loop has 6 letters. [2021-10-28 23:20:14,176 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:20:14,177 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 54 transitions. [2021-10-28 23:20:14,187 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2021-10-28 23:20:14,195 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 29 states and 37 transitions. [2021-10-28 23:20:14,196 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2021-10-28 23:20:14,196 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2021-10-28 23:20:14,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 37 transitions. [2021-10-28 23:20:14,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:20:14,198 INFO L681 BuchiCegarLoop]: Abstraction has 29 states and 37 transitions. [2021-10-28 23:20:14,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 37 transitions. [2021-10-28 23:20:14,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2021-10-28 23:20:14,225 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) [2021-10-28 23:20:14,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2021-10-28 23:20:14,229 INFO L704 BuchiCegarLoop]: Abstraction has 27 states and 33 transitions. [2021-10-28 23:20:14,229 INFO L587 BuchiCegarLoop]: Abstraction has 27 states and 33 transitions. [2021-10-28 23:20:14,230 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 23:20:14,230 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 33 transitions. [2021-10-28 23:20:14,233 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2021-10-28 23:20:14,233 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:20:14,233 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:20:14,234 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:20:14,234 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 23:20:14,234 INFO L791 eck$LassoCheckResult]: Stem: 146#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 147#L-1 havoc main_#res;havoc main_#t~nondet8, main_#t~ret9.base, main_#t~ret9.offset, main_#t~ret10.base, main_#t~ret10.offset, main_#t~ret11, main_~n~0, main_~x~0.base, main_~x~0.offset, main_~y~0.base, main_~y~0.offset, main_~y_length~0;main_~n~0 := main_#t~nondet8;havoc main_#t~nondet8; 154#L574 assume !(main_~n~0 < 1); 143#L577 call main_#t~ret9.base, main_#t~ret9.offset := new_ll(main_~n~0);< 162#new_llENTRY ~n := #in~n; 163#L548 assume 0 == ~n;#res.base, #res.offset := 0, 0; 165#new_llFINAL assume true; 159#new_llEXIT >#57#return; 157#L577-1 main_~x~0.base, main_~x~0.offset := main_#t~ret9.base, main_#t~ret9.offset;havoc main_#t~ret9.base, main_#t~ret9.offset;append_#in~x.base, append_#in~x.offset, append_#in~y.base, append_#in~y.offset := main_~x~0.base, main_~x~0.offset, main_~x~0.base, main_~x~0.offset;havoc append_#res.base, append_#res.offset;havoc append_#t~mem7.base, append_#t~mem7.offset, append_#t~mem6.base, append_#t~mem6.offset, append_~x.base, append_~x.offset, append_~y.base, append_~y.offset, append_~s~0.base, append_~s~0.offset;append_~x.base, append_~x.offset := append_#in~x.base, append_#in~x.offset;append_~y.base, append_~y.offset := append_#in~y.base, append_#in~y.offset; 158#L563 assume !(append_~x.base == 0 && append_~x.offset == 0);append_~s~0.base, append_~s~0.offset := append_~x.base, append_~x.offset; 160#L566-3 [2021-10-28 23:20:14,235 INFO L793 eck$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 [2021-10-28 23:20:14,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:20:14,236 INFO L85 PathProgramCache]: Analyzing trace with hash 772923198, now seen corresponding path program 1 times [2021-10-28 23:20:14,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:20:14,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952937607] [2021-10-28 23:20:14,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:14,236 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:20:14,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:20:14,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 23:20:14,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:20:14,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:20:14,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:20:14,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952937607] [2021-10-28 23:20:14,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952937607] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:20:14,354 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:20:14,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 23:20:14,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123267704] [2021-10-28 23:20:14,357 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 23:20:14,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:20:14,357 INFO L85 PathProgramCache]: Analyzing trace with hash 2086, now seen corresponding path program 1 times [2021-10-28 23:20:14,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:20:14,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576170165] [2021-10-28 23:20:14,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:14,358 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:20:14,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:14,363 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:20:14,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:14,369 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:20:14,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:20:14,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:20:14,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:20:14,423 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) [2021-10-28 23:20:14,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:20:14,503 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2021-10-28 23:20:14,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:20:14,504 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 31 transitions. [2021-10-28 23:20:14,511 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2021-10-28 23:20:14,512 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 24 states and 28 transitions. [2021-10-28 23:20:14,512 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2021-10-28 23:20:14,513 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2021-10-28 23:20:14,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 28 transitions. [2021-10-28 23:20:14,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:20:14,513 INFO L681 BuchiCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-10-28 23:20:14,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 28 transitions. [2021-10-28 23:20:14,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-28 23:20:14,515 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) [2021-10-28 23:20:14,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2021-10-28 23:20:14,516 INFO L704 BuchiCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-10-28 23:20:14,516 INFO L587 BuchiCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-10-28 23:20:14,516 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 23:20:14,516 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 28 transitions. [2021-10-28 23:20:14,517 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2021-10-28 23:20:14,517 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:20:14,517 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:20:14,518 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:20:14,518 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 23:20:14,518 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 [2021-10-28 23:20:14,518 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 [2021-10-28 23:20:14,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:20:14,519 INFO L85 PathProgramCache]: Analyzing trace with hash 704779872, now seen corresponding path program 1 times [2021-10-28 23:20:14,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:20:14,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701398790] [2021-10-28 23:20:14,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:14,520 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:20:14,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:14,540 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:20:14,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:14,567 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:20:14,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:20:14,568 INFO L85 PathProgramCache]: Analyzing trace with hash 2086, now seen corresponding path program 2 times [2021-10-28 23:20:14,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:20:14,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518260458] [2021-10-28 23:20:14,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:14,569 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:20:14,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:14,574 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:20:14,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:14,584 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:20:14,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:20:14,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1311374651, now seen corresponding path program 1 times [2021-10-28 23:20:14,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:20:14,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919830384] [2021-10-28 23:20:14,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:14,585 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:20:14,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:20:14,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 23:20:14,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:20:14,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 23:20:14,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:20:14,848 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 23:20:14,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:20:14,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919830384] [2021-10-28 23:20:14,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919830384] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:20:14,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120596278] [2021-10-28 23:20:14,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:14,854 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:20:14,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:20:14,859 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:20:14,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-28 23:20:14,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:20:14,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-28 23:20:14,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:20:14,989 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 [2021-10-28 23:20:15,131 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 [2021-10-28 23:20:15,140 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 [2021-10-28 23:20:15,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-28 23:20:15,340 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 [2021-10-28 23:20:15,344 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 [2021-10-28 23:20:15,350 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:20:15,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120596278] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:20:15,351 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:20:15,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2021-10-28 23:20:15,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548837329] [2021-10-28 23:20:15,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:20:15,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-28 23:20:15,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-10-28 23:20:15,399 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) [2021-10-28 23:20:15,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:20:15,604 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2021-10-28 23:20:15,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:20:15,604 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 40 transitions. [2021-10-28 23:20:15,605 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2021-10-28 23:20:15,607 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 34 states and 40 transitions. [2021-10-28 23:20:15,607 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2021-10-28 23:20:15,607 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2021-10-28 23:20:15,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 40 transitions. [2021-10-28 23:20:15,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:20:15,607 INFO L681 BuchiCegarLoop]: Abstraction has 34 states and 40 transitions. [2021-10-28 23:20:15,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 40 transitions. [2021-10-28 23:20:15,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2021-10-28 23:20:15,611 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) [2021-10-28 23:20:15,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2021-10-28 23:20:15,611 INFO L704 BuchiCegarLoop]: Abstraction has 31 states and 37 transitions. [2021-10-28 23:20:15,611 INFO L587 BuchiCegarLoop]: Abstraction has 31 states and 37 transitions. [2021-10-28 23:20:15,612 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 23:20:15,612 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 37 transitions. [2021-10-28 23:20:15,612 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2021-10-28 23:20:15,612 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:20:15,612 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:20:15,613 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:20:15,613 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 23:20:15,613 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 [2021-10-28 23:20:15,614 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 [2021-10-28 23:20:15,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:20:15,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1311376214, now seen corresponding path program 1 times [2021-10-28 23:20:15,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:20:15,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750301635] [2021-10-28 23:20:15,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:15,615 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:20:15,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:20:15,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 23:20:15,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:20:15,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 23:20:15,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:20:15,721 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 23:20:15,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:20:15,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750301635] [2021-10-28 23:20:15,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750301635] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:20:15,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:20:15,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 23:20:15,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636603609] [2021-10-28 23:20:15,723 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 23:20:15,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:20:15,724 INFO L85 PathProgramCache]: Analyzing trace with hash 37905, now seen corresponding path program 1 times [2021-10-28 23:20:15,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:20:15,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80490978] [2021-10-28 23:20:15,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:15,725 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:20:15,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:15,731 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:20:15,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:15,736 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:20:15,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:20:15,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:20:15,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:20:15,872 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) [2021-10-28 23:20:15,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:20:15,946 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2021-10-28 23:20:15,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:20:15,946 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 41 transitions. [2021-10-28 23:20:15,952 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2021-10-28 23:20:15,955 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 36 states and 41 transitions. [2021-10-28 23:20:15,955 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2021-10-28 23:20:15,955 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2021-10-28 23:20:15,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 41 transitions. [2021-10-28 23:20:15,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:20:15,956 INFO L681 BuchiCegarLoop]: Abstraction has 36 states and 41 transitions. [2021-10-28 23:20:15,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 41 transitions. [2021-10-28 23:20:15,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 31. [2021-10-28 23:20:15,967 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) [2021-10-28 23:20:15,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2021-10-28 23:20:15,969 INFO L704 BuchiCegarLoop]: Abstraction has 31 states and 35 transitions. [2021-10-28 23:20:15,969 INFO L587 BuchiCegarLoop]: Abstraction has 31 states and 35 transitions. [2021-10-28 23:20:15,969 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-28 23:20:15,969 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 35 transitions. [2021-10-28 23:20:15,971 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2021-10-28 23:20:15,971 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:20:15,971 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:20:15,973 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] [2021-10-28 23:20:15,973 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 23:20:15,974 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$(append_~y.base, append_~y.offset, append_~x.base, 4 + append_~x.offset, 8);append_#res.base, append_#res.offset := append_~s~0.base, append_~s~0.offset; 455#L569 main_#t~ret10.base, main_#t~ret10.offset := append_#res.base, append_#res.offset;main_~y~0.base, main_~y~0.offset := main_#t~ret10.base, main_#t~ret10.offset;havoc main_#t~ret10.base, main_#t~ret10.offset; 456#L579 call main_#t~ret11 := length(main_~y~0.base, main_~y~0.offset);< 470#lengthENTRY [2021-10-28 23:20:15,974 INFO L793 eck$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 [2021-10-28 23:20:15,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:20:15,975 INFO L85 PathProgramCache]: Analyzing trace with hash -139719339, now seen corresponding path program 1 times [2021-10-28 23:20:15,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:20:15,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963110242] [2021-10-28 23:20:15,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:15,976 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:20:16,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:16,019 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:20:16,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:16,059 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:20:16,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:20:16,060 INFO L85 PathProgramCache]: Analyzing trace with hash 37905, now seen corresponding path program 2 times [2021-10-28 23:20:16,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:20:16,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782261792] [2021-10-28 23:20:16,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:16,061 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:20:16,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:16,067 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:20:16,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:16,075 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:20:16,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:20:16,076 INFO L85 PathProgramCache]: Analyzing trace with hash -555510211, now seen corresponding path program 1 times [2021-10-28 23:20:16,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:20:16,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887945544] [2021-10-28 23:20:16,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:16,077 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:20:16,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:16,114 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:20:16,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:16,165 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:20:18,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 11:20:18 BoogieIcfgContainer [2021-10-28 23:20:18,765 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 23:20:18,766 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:20:18,766 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:20:18,766 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:20:18,766 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:20:11" (3/4) ... [2021-10-28 23:20:18,769 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-28 23:20:18,828 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:20:18,829 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:20:18,830 INFO L168 Benchmark]: Toolchain (without parser) took 8513.33 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 78.2 MB in the beginning and 72.8 MB in the end (delta: 5.3 MB). Peak memory consumption was 31.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:20:18,830 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 117.4 MB. Free memory is still 95.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:20:18,831 INFO L168 Benchmark]: CACSL2BoogieTranslator took 500.72 ms. Allocated memory is still 117.4 MB. Free memory was 77.9 MB in the beginning and 86.2 MB in the end (delta: -8.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:20:18,833 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.90 ms. Allocated memory is still 117.4 MB. Free memory was 86.2 MB in the beginning and 84.5 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:20:18,834 INFO L168 Benchmark]: Boogie Preprocessor took 28.32 ms. Allocated memory is still 117.4 MB. Free memory was 84.5 MB in the beginning and 82.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:20:18,836 INFO L168 Benchmark]: RCFGBuilder took 378.70 ms. Allocated memory is still 117.4 MB. Free memory was 82.9 MB in the beginning and 71.6 MB in the end (delta: 11.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:20:18,837 INFO L168 Benchmark]: BuchiAutomizer took 7475.62 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 71.6 MB in the beginning and 74.8 MB in the end (delta: -3.2 MB). Peak memory consumption was 60.9 MB. Max. memory is 16.1 GB. [2021-10-28 23:20:18,837 INFO L168 Benchmark]: Witness Printer took 63.12 ms. Allocated memory is still 142.6 MB. Free memory was 74.8 MB in the beginning and 72.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:20:18,840 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 117.4 MB. Free memory is still 95.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 500.72 ms. Allocated memory is still 117.4 MB. Free memory was 77.9 MB in the beginning and 86.2 MB in the end (delta: -8.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.90 ms. Allocated memory is still 117.4 MB. Free memory was 86.2 MB in the beginning and 84.5 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.32 ms. Allocated memory is still 117.4 MB. Free memory was 84.5 MB in the beginning and 82.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 378.70 ms. Allocated memory is still 117.4 MB. Free memory was 82.9 MB in the beginning and 71.6 MB in the end (delta: 11.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 7475.62 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 71.6 MB in the beginning and 74.8 MB in the end (delta: -3.2 MB). Peak memory consumption was 60.9 MB. Max. memory is 16.1 GB. * Witness Printer took 63.12 ms. Allocated memory is still 142.6 MB. Free memory was 74.8 MB in the beginning and 72.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (3 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function \old(n) and consists of 5 locations. 3 modules have a trivial ranking function, the largest among these consists of 16 locations. The remainder module has 31 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 7.3s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 6.4s. Construction of modules took 0.2s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 10 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 31 states and ocurred in iteration 3. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 61 SDtfs, 51 SDslu, 217 SDs, 0 SdLazy, 269 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU2 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital140 mio100 ax100 hnf100 lsp95 ukn28 mio100 lsp39 div100 bol100 ite100 ukn100 eq200 hnf86 smp100 dnf146 smp100 tf100 neg94 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 150ms VariablesStem: 1 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 555]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {x=0, x=0, y_length=0, NULL=0, y=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@3cc1d21=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@e49840a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@2f3b85b6=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@2f3b85b6=0, s=0, NULL=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5fb6ecda=0, xs=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4acc2456=0, NULL=0, y=0, y=0, \result=0, x=0, y=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@65875076=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@79379cc5=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@79379cc5=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@e49840a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@13d725ab=0, x=0, y=0, n=0, NULL=0, y=0, xs=-1, \result=0, \result=0, NULL=0, xs=0, xs=0, x=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5fb6ecda=0, s=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@3cc1d21=0, x=0, NULL=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 555]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L573] int n = __VERIFIER_nondet_int(); [L574] COND FALSE !(n < 1) [L577] CALL, EXPR new_ll(n) [L548] COND FALSE !(n == 0) [L550] node_t* head = malloc(sizeof(node_t)); [L551] head->val = n [L552] CALL, EXPR new_ll(n-1) [L548] COND TRUE n == 0 [L549] return ((void *)0); [L552] RET, EXPR new_ll(n-1) [L552] head->next = new_ll(n-1) [L553] return head; [L577] RET, EXPR new_ll(n) [L577] node_t* x = new_ll(n); [L563] COND FALSE !(x == ((void *)0)) [L565] node_t* s = x; [L566] EXPR x->next [L566] COND FALSE !(x->next != ((void *)0)) [L568] x->next = y [L569] return s; [L578] node_t* y = append(x, x); [L579] CALL length(y) Loop: [L557] COND FALSE !(xs == ((void *)0)) [L559] EXPR xs->next [L559] CALL length(xs->next) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-28 23:20:18,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-28 23:20:19,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac8818-7f90-4da8-ba65-56d174abf4a9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...