./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-memory-linkedlists/cll_traverse-alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-memory-linkedlists/cll_traverse-alloca.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --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 e315cf3165b5c80f73630ff082828d53fc68117bd863ad55d6a1d7f1b3bce898 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:37:06,661 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:37:06,723 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-29 04:37:06,728 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:37:06,728 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:37:06,750 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:37:06,751 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:37:06,752 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:37:06,752 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:37:06,753 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:37:06,754 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:37:06,754 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:37:06,755 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:37:06,755 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-29 04:37:06,756 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-29 04:37:06,756 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-29 04:37:06,757 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-29 04:37:06,757 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-29 04:37:06,758 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-29 04:37:06,758 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:37:06,759 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-29 04:37:06,759 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:37:06,760 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:37:06,760 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-29 04:37:06,761 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-29 04:37:06,761 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-29 04:37:06,761 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 04:37:06,762 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:37:06,762 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-29 04:37:06,763 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:37:06,763 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:37:06,763 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:37:06,764 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:37:06,764 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:37:06,764 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-29 04:37:06,765 INFO L153 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_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e315cf3165b5c80f73630ff082828d53fc68117bd863ad55d6a1d7f1b3bce898 [2023-11-29 04:37:06,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:37:07,004 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:37:07,007 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:37:07,008 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:37:07,009 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:37:07,010 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/termination-memory-linkedlists/cll_traverse-alloca.i [2023-11-29 04:37:09,771 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:37:09,973 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:37:09,973 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/sv-benchmarks/c/termination-memory-linkedlists/cll_traverse-alloca.i [2023-11-29 04:37:09,985 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/data/fa7971b0a/644cf92892c54e6999154c5d8abcf0c2/FLAG641a0d4ac [2023-11-29 04:37:09,996 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/data/fa7971b0a/644cf92892c54e6999154c5d8abcf0c2 [2023-11-29 04:37:09,998 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:37:10,000 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:37:10,001 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:37:10,001 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:37:10,005 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:37:10,006 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:37:09" (1/1) ... [2023-11-29 04:37:10,007 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a449ab4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:37:10, skipping insertion in model container [2023-11-29 04:37:10,007 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:37:09" (1/1) ... [2023-11-29 04:37:10,048 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:37:10,271 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:37:10,284 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:37:10,320 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:37:10,349 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:37:10,349 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:37:10 WrapperNode [2023-11-29 04:37:10,349 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:37:10,350 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:37:10,350 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:37:10,350 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:37:10,358 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:37:10" (1/1) ... [2023-11-29 04:37:10,370 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:37:10" (1/1) ... [2023-11-29 04:37:10,389 INFO L138 Inliner]: procedures = 114, calls = 11, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 47 [2023-11-29 04:37:10,389 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:37:10,390 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:37:10,390 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:37:10,390 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:37:10,399 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:37:10" (1/1) ... [2023-11-29 04:37:10,400 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:37:10" (1/1) ... [2023-11-29 04:37:10,402 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:37:10" (1/1) ... [2023-11-29 04:37:10,413 INFO L175 MemorySlicer]: Split 5 memory accesses to 1 slices as follows [5]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 4 writes are split as follows [4]. [2023-11-29 04:37:10,413 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:37:10" (1/1) ... [2023-11-29 04:37:10,413 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:37:10" (1/1) ... [2023-11-29 04:37:10,419 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:37:10" (1/1) ... [2023-11-29 04:37:10,422 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:37:10" (1/1) ... [2023-11-29 04:37:10,424 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:37:10" (1/1) ... [2023-11-29 04:37:10,425 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:37:10" (1/1) ... [2023-11-29 04:37:10,427 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:37:10,428 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:37:10,428 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:37:10,428 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:37:10,429 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:37:10" (1/1) ... [2023-11-29 04:37:10,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 04:37:10,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:37:10,459 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 04:37:10,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-29 04:37:10,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 04:37:10,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 04:37:10,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 04:37:10,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 04:37:10,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:37:10,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:37:10,587 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:37:10,590 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:37:10,721 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:37:10,729 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:37:10,729 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 04:37:10,731 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:37:10 BoogieIcfgContainer [2023-11-29 04:37:10,731 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:37:10,733 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-29 04:37:10,733 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-29 04:37:10,737 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-29 04:37:10,738 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 04:37:10,738 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 04:37:09" (1/3) ... [2023-11-29 04:37:10,739 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@c0a21cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 04:37:10, skipping insertion in model container [2023-11-29 04:37:10,739 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 04:37:10,740 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:37:10" (2/3) ... [2023-11-29 04:37:10,740 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@c0a21cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 04:37:10, skipping insertion in model container [2023-11-29 04:37:10,740 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 04:37:10,740 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:37:10" (3/3) ... [2023-11-29 04:37:10,742 INFO L332 chiAutomizerObserver]: Analyzing ICFG cll_traverse-alloca.i [2023-11-29 04:37:10,793 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-29 04:37:10,793 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-29 04:37:10,793 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-29 04:37:10,794 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-29 04:37:10,794 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-29 04:37:10,794 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-29 04:37:10,794 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-29 04:37:10,794 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-29 04:37:10,798 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:37:10,814 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 3 [2023-11-29 04:37:10,814 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 04:37:10,814 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 04:37:10,819 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-29 04:37:10,819 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-29 04:37:10,819 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-29 04:37:10,819 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:37:10,821 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 3 [2023-11-29 04:37:10,821 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 04:37:10,821 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 04:37:10,822 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-29 04:37:10,822 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-29 04:37:10,830 INFO L748 eck$LassoCheckResult]: Stem: 9#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 11#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1.base, main_#t~ret7#1.offset, main_~n~0#1, main_~head~1#1.base, main_~head~1#1.offset;havoc main_#t~nondet6#1;main_~n~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;assume { :begin_inline_init_cll } true;init_cll_#in~n#1 := main_~n~0#1;havoc init_cll_#res#1.base, init_cll_#res#1.offset;havoc init_cll_#t~malloc2#1.base, init_cll_#t~malloc2#1.offset, init_cll_#t~malloc4#1.base, init_cll_#t~malloc4#1.offset, init_cll_#t~post3#1, init_cll_~i~0#1, init_cll_~next_node~0#1.base, init_cll_~next_node~0#1.offset, init_cll_~n#1, init_cll_~head~0#1.base, init_cll_~head~0#1.offset, init_cll_~curr~0#1.base, init_cll_~curr~0#1.offset;init_cll_~n#1 := init_cll_#in~n#1;havoc init_cll_~head~0#1.base, init_cll_~head~0#1.offset;call init_cll_#t~malloc2#1.base, init_cll_#t~malloc2#1.offset := #Ultimate.allocOnHeap(12);init_cll_~curr~0#1.base, init_cll_~curr~0#1.offset := init_cll_#t~malloc2#1.base, init_cll_#t~malloc2#1.offset;havoc init_cll_#t~malloc2#1.base, init_cll_#t~malloc2#1.offset;call write~int#0(0, init_cll_~curr~0#1.base, init_cll_~curr~0#1.offset, 4);init_cll_~head~0#1.base, init_cll_~head~0#1.offset := init_cll_~curr~0#1.base, init_cll_~curr~0#1.offset;init_cll_~i~0#1 := 1; 4#L552-3true [2023-11-29 04:37:10,830 INFO L750 eck$LassoCheckResult]: Loop: 4#L552-3true assume !!(init_cll_~i~0#1 < init_cll_~n#1);call init_cll_#t~malloc4#1.base, init_cll_#t~malloc4#1.offset := #Ultimate.allocOnHeap(12);init_cll_~next_node~0#1.base, init_cll_~next_node~0#1.offset := init_cll_#t~malloc4#1.base, init_cll_#t~malloc4#1.offset;havoc init_cll_#t~malloc4#1.base, init_cll_#t~malloc4#1.offset;call write~int#0(init_cll_~i~0#1, init_cll_~next_node~0#1.base, init_cll_~next_node~0#1.offset, 4);call write~$Pointer$#0(init_cll_~next_node~0#1.base, init_cll_~next_node~0#1.offset, init_cll_~curr~0#1.base, 4 + init_cll_~curr~0#1.offset, 8);init_cll_~curr~0#1.base, init_cll_~curr~0#1.offset := init_cll_~next_node~0#1.base, init_cll_~next_node~0#1.offset; 2#L552-2true init_cll_#t~post3#1 := init_cll_~i~0#1;init_cll_~i~0#1 := 1 + init_cll_#t~post3#1;havoc init_cll_#t~post3#1; 4#L552-3true [2023-11-29 04:37:10,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:37:10,836 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-29 04:37:10,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:37:10,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74848159] [2023-11-29 04:37:10,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:37:10,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:37:10,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:37:10,950 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 04:37:10,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:37:11,007 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 04:37:11,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:37:11,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1283, now seen corresponding path program 1 times [2023-11-29 04:37:11,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:37:11,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296621446] [2023-11-29 04:37:11,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:37:11,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:37:11,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:37:11,037 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 04:37:11,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:37:11,057 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 04:37:11,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:37:11,059 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2023-11-29 04:37:11,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:37:11,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489774481] [2023-11-29 04:37:11,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:37:11,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:37:11,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:37:11,103 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 04:37:11,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:37:11,132 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 04:37:12,066 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 04:37:12,067 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 04:37:12,067 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 04:37:12,067 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 04:37:12,067 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-29 04:37:12,068 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 04:37:12,068 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 04:37:12,068 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 04:37:12,068 INFO L133 ssoRankerPreferences]: Filename of dumped script: cll_traverse-alloca.i_Iteration1_Lasso [2023-11-29 04:37:12,068 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 04:37:12,068 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 04:37:12,087 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 04:37:12,094 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 04:37:12,097 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 04:37:12,099 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 04:37:12,102 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 04:37:12,105 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 04:37:12,108 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 04:37:12,363 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 04:37:12,366 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 04:37:12,368 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 04:37:12,371 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 04:37:12,373 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 04:37:12,375 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 04:37:12,378 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 04:37:12,381 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 04:37:12,384 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 04:37:12,674 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 04:37:12,678 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-29 04:37:12,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 04:37:12,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:37:12,681 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 04:37:12,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-29 04:37:12,689 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 [2023-11-29 04:37:12,703 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 04:37:12,703 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 04:37:12,704 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 04:37:12,704 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 04:37:12,704 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 04:37:12,706 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 04:37:12,706 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 04:37:12,708 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 04:37:12,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-11-29 04:37:12,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 04:37:12,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:37:12,715 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 04:37:12,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-29 04:37:12,725 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 [2023-11-29 04:37:12,738 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 04:37:12,738 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 04:37:12,738 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 04:37:12,738 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 04:37:12,738 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 04:37:12,739 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 04:37:12,739 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 04:37:12,741 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 04:37:12,744 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2023-11-29 04:37:12,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 04:37:12,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:37:12,746 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 04:37:12,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-29 04:37:12,751 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 [2023-11-29 04:37:12,765 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 04:37:12,766 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 04:37:12,766 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 04:37:12,766 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 04:37:12,766 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 04:37:12,767 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 04:37:12,767 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 04:37:12,772 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 04:37:12,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-11-29 04:37:12,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 04:37:12,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:37:12,778 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 04:37:12,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-29 04:37:12,785 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 [2023-11-29 04:37:12,798 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 04:37:12,798 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 04:37:12,798 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 04:37:12,798 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 04:37:12,799 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 04:37:12,800 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 04:37:12,800 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 04:37:12,802 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 04:37:12,806 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2023-11-29 04:37:12,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 04:37:12,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:37:12,807 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 04:37:12,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-29 04:37:12,811 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 [2023-11-29 04:37:12,824 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 04:37:12,824 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 04:37:12,824 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 04:37:12,824 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 04:37:12,825 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 04:37:12,825 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 04:37:12,825 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 04:37:12,829 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 04:37:12,833 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2023-11-29 04:37:12,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 04:37:12,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:37:12,834 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 04:37:12,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-29 04:37:12,838 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 [2023-11-29 04:37:12,850 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 04:37:12,851 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 04:37:12,851 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 04:37:12,851 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 04:37:12,851 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 04:37:12,852 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 04:37:12,852 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 04:37:12,853 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 04:37:12,857 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2023-11-29 04:37:12,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 04:37:12,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:37:12,858 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 04:37:12,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-29 04:37:12,862 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-29 04:37:12,874 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 04:37:12,874 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 04:37:12,875 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 04:37:12,875 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 04:37:12,879 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-29 04:37:12,879 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-29 04:37:12,885 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 04:37:12,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2023-11-29 04:37:12,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 04:37:12,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:37:12,890 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 04:37:12,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-29 04:37:12,893 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 [2023-11-29 04:37:12,906 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 04:37:12,906 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 04:37:12,906 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 04:37:12,906 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 04:37:12,917 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-29 04:37:12,917 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-29 04:37:12,931 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-29 04:37:12,973 INFO L443 ModelExtractionUtils]: Simplification made 7 calls to the SMT solver. [2023-11-29 04:37:12,973 INFO L444 ModelExtractionUtils]: 12 out of 22 variables were initially zero. Simplification set additionally 7 variables to zero. [2023-11-29 04:37:12,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 04:37:12,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:37:13,008 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 04:37:13,010 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-29 04:37:13,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-29 04:37:13,024 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2023-11-29 04:37:13,024 INFO L513 LassoAnalysis]: Proved termination. [2023-11-29 04:37:13,025 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_init_cll_~i~0#1, ULTIMATE.start_init_cll_~n#1) = -1*ULTIMATE.start_init_cll_~i~0#1 + 1*ULTIMATE.start_init_cll_~n#1 Supporting invariants [] [2023-11-29 04:37:13,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2023-11-29 04:37:13,039 INFO L156 tatePredicateManager]: 2 out of 2 supporting invariants were superfluous and have been removed [2023-11-29 04:37:13,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:37:13,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:37:13,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 04:37:13,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:37:13,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:37:13,114 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:37:13,114 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:37:13,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:37:13,163 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-11-29 04:37:13,164 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:37:13,206 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 21 states and 29 transitions. Complement of second has 8 states. [2023-11-29 04:37:13,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-29 04:37:13,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:37:13,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2023-11-29 04:37:13,215 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 2 letters. Loop has 2 letters. [2023-11-29 04:37:13,215 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 04:37:13,215 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 4 letters. Loop has 2 letters. [2023-11-29 04:37:13,216 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 04:37:13,216 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 2 letters. Loop has 4 letters. [2023-11-29 04:37:13,216 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 04:37:13,217 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 29 transitions. [2023-11-29 04:37:13,219 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-11-29 04:37:13,221 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 8 states and 10 transitions. [2023-11-29 04:37:13,222 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2023-11-29 04:37:13,222 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2023-11-29 04:37:13,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 10 transitions. [2023-11-29 04:37:13,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:37:13,223 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 10 transitions. [2023-11-29 04:37:13,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 10 transitions. [2023-11-29 04:37:13,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2023-11-29 04:37:13,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.25) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:37:13,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2023-11-29 04:37:13,243 INFO L240 hiAutomatonCegarLoop]: Abstraction has 8 states and 10 transitions. [2023-11-29 04:37:13,243 INFO L428 stractBuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2023-11-29 04:37:13,243 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-29 04:37:13,244 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 10 transitions. [2023-11-29 04:37:13,244 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-11-29 04:37:13,244 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 04:37:13,244 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 04:37:13,245 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2023-11-29 04:37:13,245 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-11-29 04:37:13,245 INFO L748 eck$LassoCheckResult]: Stem: 85#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 86#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1.base, main_#t~ret7#1.offset, main_~n~0#1, main_~head~1#1.base, main_~head~1#1.offset;havoc main_#t~nondet6#1;main_~n~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;assume { :begin_inline_init_cll } true;init_cll_#in~n#1 := main_~n~0#1;havoc init_cll_#res#1.base, init_cll_#res#1.offset;havoc init_cll_#t~malloc2#1.base, init_cll_#t~malloc2#1.offset, init_cll_#t~malloc4#1.base, init_cll_#t~malloc4#1.offset, init_cll_#t~post3#1, init_cll_~i~0#1, init_cll_~next_node~0#1.base, init_cll_~next_node~0#1.offset, init_cll_~n#1, init_cll_~head~0#1.base, init_cll_~head~0#1.offset, init_cll_~curr~0#1.base, init_cll_~curr~0#1.offset;init_cll_~n#1 := init_cll_#in~n#1;havoc init_cll_~head~0#1.base, init_cll_~head~0#1.offset;call init_cll_#t~malloc2#1.base, init_cll_#t~malloc2#1.offset := #Ultimate.allocOnHeap(12);init_cll_~curr~0#1.base, init_cll_~curr~0#1.offset := init_cll_#t~malloc2#1.base, init_cll_#t~malloc2#1.offset;havoc init_cll_#t~malloc2#1.base, init_cll_#t~malloc2#1.offset;call write~int#0(0, init_cll_~curr~0#1.base, init_cll_~curr~0#1.offset, 4);init_cll_~head~0#1.base, init_cll_~head~0#1.offset := init_cll_~curr~0#1.base, init_cll_~curr~0#1.offset;init_cll_~i~0#1 := 1; 81#L552-3 assume !(init_cll_~i~0#1 < init_cll_~n#1); 82#L552-4 havoc init_cll_~i~0#1, init_cll_~next_node~0#1.base, init_cll_~next_node~0#1.offset;call write~$Pointer$#0(init_cll_~head~0#1.base, init_cll_~head~0#1.offset, init_cll_~curr~0#1.base, 4 + init_cll_~curr~0#1.offset, 8);init_cll_#res#1.base, init_cll_#res#1.offset := init_cll_~head~0#1.base, init_cll_~head~0#1.offset; 83#init_cll_returnLabel#1 main_#t~ret7#1.base, main_#t~ret7#1.offset := init_cll_#res#1.base, init_cll_#res#1.offset;havoc init_cll_#t~malloc2#1.base, init_cll_#t~malloc2#1.offset, init_cll_#t~malloc4#1.base, init_cll_#t~malloc4#1.offset, init_cll_#t~post3#1, init_cll_~i~0#1, init_cll_~next_node~0#1.base, init_cll_~next_node~0#1.offset, init_cll_~n#1, init_cll_~head~0#1.base, init_cll_~head~0#1.offset, init_cll_~curr~0#1.base, init_cll_~curr~0#1.offset;havoc init_cll_#in~n#1;assume { :end_inline_init_cll } true;main_~head~1#1.base, main_~head~1#1.offset := main_#t~ret7#1.base, main_#t~ret7#1.offset;havoc main_#t~ret7#1.base, main_#t~ret7#1.offset;assume { :begin_inline_traverse } true;traverse_#in~head#1.base, traverse_#in~head#1.offset := main_~head~1#1.base, main_~head~1#1.offset;havoc traverse_#t~mem5#1.base, traverse_#t~mem5#1.offset, traverse_~head#1.base, traverse_~head#1.offset, traverse_~curr~1#1.base, traverse_~curr~1#1.offset;traverse_~head#1.base, traverse_~head#1.offset := traverse_#in~head#1.base, traverse_#in~head#1.offset;traverse_~curr~1#1.base, traverse_~curr~1#1.offset := traverse_~head#1.base, traverse_~head#1.offset; 84#L564-2 [2023-11-29 04:37:13,245 INFO L750 eck$LassoCheckResult]: Loop: 84#L564-2 assume !!(traverse_~curr~1#1.base != 0 || traverse_~curr~1#1.offset != 0);call traverse_#t~mem5#1.base, traverse_#t~mem5#1.offset := read~$Pointer$#0(traverse_~curr~1#1.base, 4 + traverse_~curr~1#1.offset, 8);traverse_~curr~1#1.base, traverse_~curr~1#1.offset := traverse_#t~mem5#1.base, traverse_#t~mem5#1.offset;havoc traverse_#t~mem5#1.base, traverse_#t~mem5#1.offset; 84#L564-2 [2023-11-29 04:37:13,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:37:13,246 INFO L85 PathProgramCache]: Analyzing trace with hash 28696935, now seen corresponding path program 1 times [2023-11-29 04:37:13,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:37:13,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021892522] [2023-11-29 04:37:13,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:37:13,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:37:13,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:37:13,269 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 04:37:13,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:37:13,286 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 04:37:13,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:37:13,287 INFO L85 PathProgramCache]: Analyzing trace with hash 58, now seen corresponding path program 1 times [2023-11-29 04:37:13,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:37:13,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575086426] [2023-11-29 04:37:13,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:37:13,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:37:13,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:37:13,293 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 04:37:13,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:37:13,298 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 04:37:13,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:37:13,299 INFO L85 PathProgramCache]: Analyzing trace with hash 889605012, now seen corresponding path program 1 times [2023-11-29 04:37:13,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:37:13,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627338022] [2023-11-29 04:37:13,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:37:13,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:37:13,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:37:13,320 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 04:37:13,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:37:13,342 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 04:37:13,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:37:13,945 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 04:37:13,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:37:13,984 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-29 04:37:13,993 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-29 04:37:13,994 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 04:37:13 BoogieIcfgContainer [2023-11-29 04:37:13,994 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-29 04:37:13,995 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 04:37:13,995 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 04:37:13,995 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 04:37:13,995 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:37:10" (3/4) ... [2023-11-29 04:37:13,997 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-29 04:37:13,999 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-29 04:37:14,035 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 04:37:14,036 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 04:37:14,037 INFO L158 Benchmark]: Toolchain (without parser) took 4036.87ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 119.7MB in the beginning and 80.6MB in the end (delta: 39.1MB). Peak memory consumption was 73.1MB. Max. memory is 16.1GB. [2023-11-29 04:37:14,037 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 107.0MB. Free memory is still 57.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:37:14,038 INFO L158 Benchmark]: CACSL2BoogieTranslator took 348.62ms. Allocated memory is still 159.4MB. Free memory was 119.7MB in the beginning and 103.3MB in the end (delta: 16.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-29 04:37:14,038 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.17ms. Allocated memory is still 159.4MB. Free memory was 103.3MB in the beginning and 101.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 04:37:14,039 INFO L158 Benchmark]: Boogie Preprocessor took 37.61ms. Allocated memory is still 159.4MB. Free memory was 101.6MB in the beginning and 99.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 04:37:14,039 INFO L158 Benchmark]: RCFGBuilder took 303.52ms. Allocated memory is still 159.4MB. Free memory was 99.5MB in the beginning and 88.2MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-29 04:37:14,040 INFO L158 Benchmark]: BuchiAutomizer took 3261.77ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 87.8MB in the beginning and 82.7MB in the end (delta: 5.1MB). Peak memory consumption was 39.5MB. Max. memory is 16.1GB. [2023-11-29 04:37:14,040 INFO L158 Benchmark]: Witness Printer took 41.17ms. Allocated memory is still 192.9MB. Free memory was 82.7MB in the beginning and 80.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 04:37:14,043 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 107.0MB. Free memory is still 57.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 348.62ms. Allocated memory is still 159.4MB. Free memory was 119.7MB in the beginning and 103.3MB in the end (delta: 16.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.17ms. Allocated memory is still 159.4MB. Free memory was 103.3MB in the beginning and 101.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.61ms. Allocated memory is still 159.4MB. Free memory was 101.6MB in the beginning and 99.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 303.52ms. Allocated memory is still 159.4MB. Free memory was 99.5MB in the beginning and 88.2MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * BuchiAutomizer took 3261.77ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 87.8MB in the beginning and 82.7MB in the end (delta: 5.1MB). Peak memory consumption was 39.5MB. Max. memory is 16.1GB. * Witness Printer took 41.17ms. Allocated memory is still 192.9MB. Free memory was 82.7MB in the beginning and 80.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function (n + (-1 * i)) and consists of 5 locations. The remainder module has 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.1s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 2.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3 mSDsluCounter, 3 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8 IncrementalHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 3 mSDtfsCounter, 8 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital266 mio100 ax100 hnf100 lsp97 ukn38 mio100 lsp29 div100 bol100 ite100 ukn100 eq200 hnf88 smp100 dnf128 smp88 tf100 neg100 sie113 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 27ms VariablesStem: 1 VariablesLoop: 1 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 564]: Nontermination argument in form of an infinite program execution. [2023-11-29 04:37:14,054 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-29 04:37:14,057 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not Nontermination argument in form of an infinite program execution. Stem: [L570] int n = __VERIFIER_nondet_int(); [L571] CALL, EXPR init_cll(n) [L548] node_t* head; [L549] node_t* curr = malloc(sizeof(node_t)); [L550] curr->val = 0 [L551] head = curr [L552] int i = 1; VAL [\old(n)=0, curr={6753:0}, head={6753:0}, i=1, n=0] [L552] COND FALSE !(i < n) VAL [\old(n)=0, curr={6753:0}, head={6753:0}, i=1, n=0] [L558] curr->next = head [L559] return head; VAL [\old(n)=0, \result={6753:0}, curr={6753:0}, head={6753:0}, n=0] [L571] RET, EXPR init_cll(n) [L571] node_t* head = init_cll(n); [L572] CALL traverse(head) [L563] node_t* curr = head; VAL [curr={6753:0}, head={6753:0}, head={6753:0}] Loop: [L564] COND TRUE curr != ((void *)0) [L565] EXPR curr->next [L565] curr = curr->next End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 564]: Nonterminating execution [2023-11-29 04:37:14,060 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-29 04:37:14,063 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L570] int n = __VERIFIER_nondet_int(); [L571] CALL, EXPR init_cll(n) [L548] node_t* head; [L549] node_t* curr = malloc(sizeof(node_t)); [L550] curr->val = 0 [L551] head = curr [L552] int i = 1; VAL [\old(n)=0, curr={6753:0}, head={6753:0}, i=1, n=0] [L552] COND FALSE !(i < n) VAL [\old(n)=0, curr={6753:0}, head={6753:0}, i=1, n=0] [L558] curr->next = head [L559] return head; VAL [\old(n)=0, \result={6753:0}, curr={6753:0}, head={6753:0}, n=0] [L571] RET, EXPR init_cll(n) [L571] node_t* head = init_cll(n); [L572] CALL traverse(head) [L563] node_t* curr = head; VAL [curr={6753:0}, head={6753:0}, head={6753:0}] Loop: [L564] COND TRUE curr != ((void *)0) [L565] EXPR curr->next [L565] curr = curr->next End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-11-29 04:37:14,071 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2023-11-29 04:37:14,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00d29c4-f42a-4f44-a2c1-a6a913b88b8e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)