./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 d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/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_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB --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 a94e514ac338898e2e1e54a42b19ae4490ac5c412319209fc14736a6de9b7386 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:22:50,780 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:22:50,889 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-11-28 02:22:50,896 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:22:50,896 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:22:50,931 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:22:50,933 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:22:50,933 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:22:50,934 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:22:50,934 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:22:50,935 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:22:50,936 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:22:50,936 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:22:50,936 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-28 02:22:50,937 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-28 02:22:50,937 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-28 02:22:50,937 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-28 02:22:50,937 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-28 02:22:50,937 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-28 02:22:50,937 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:22:50,937 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-28 02:22:50,938 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:22:50,938 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:22:50,938 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-28 02:22:50,938 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-28 02:22:50,938 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-28 02:22:50,938 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 02:22:50,938 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:22:50,939 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-28 02:22:50,939 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:22:50,939 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:22:50,939 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:22:50,939 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:22:50,939 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:22:50,940 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL_NO_AM [2024-11-28 02:22:50,940 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-28 02:22:50,941 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB 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 -> a94e514ac338898e2e1e54a42b19ae4490ac5c412319209fc14736a6de9b7386 [2024-11-28 02:22:51,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:22:51,277 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:22:51,279 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:22:51,281 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:22:51,281 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:22:51,284 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/termination-memory-linkedlists/ll_append-alloca-2.i [2024-11-28 02:22:54,276 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/data/cb37d3231/47d75a46fc244cc7b99c28705890939e/FLAG84c5b9cc4 [2024-11-28 02:22:54,587 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:22:54,587 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/sv-benchmarks/c/termination-memory-linkedlists/ll_append-alloca-2.i [2024-11-28 02:22:54,598 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/data/cb37d3231/47d75a46fc244cc7b99c28705890939e/FLAG84c5b9cc4 [2024-11-28 02:22:54,611 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/data/cb37d3231/47d75a46fc244cc7b99c28705890939e [2024-11-28 02:22:54,613 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:22:54,615 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:22:54,616 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:22:54,616 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:22:54,620 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:22:54,621 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:22:54" (1/1) ... [2024-11-28 02:22:54,622 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@534dcaa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:54, skipping insertion in model container [2024-11-28 02:22:54,622 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:22:54" (1/1) ... [2024-11-28 02:22:54,658 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:22:54,913 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:22:54,924 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:22:54,970 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:22:54,996 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:22:54,996 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:54 WrapperNode [2024-11-28 02:22:54,996 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:22:54,997 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:22:54,997 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:22:54,998 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:22:55,004 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:54" (1/1) ... [2024-11-28 02:22:55,013 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:54" (1/1) ... [2024-11-28 02:22:55,028 INFO L138 Inliner]: procedures = 115, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 38 [2024-11-28 02:22:55,028 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:22:55,029 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:22:55,029 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:22:55,029 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:22:55,037 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:54" (1/1) ... [2024-11-28 02:22:55,037 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:54" (1/1) ... [2024-11-28 02:22:55,040 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:54" (1/1) ... [2024-11-28 02:22:55,054 INFO L175 MemorySlicer]: Split 6 memory accesses to 1 slices as follows [6]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 3 writes are split as follows [3]. [2024-11-28 02:22:55,054 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:54" (1/1) ... [2024-11-28 02:22:55,055 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:54" (1/1) ... [2024-11-28 02:22:55,060 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:54" (1/1) ... [2024-11-28 02:22:55,061 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:54" (1/1) ... [2024-11-28 02:22:55,064 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:54" (1/1) ... [2024-11-28 02:22:55,065 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:54" (1/1) ... [2024-11-28 02:22:55,065 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:54" (1/1) ... [2024-11-28 02:22:55,067 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:22:55,068 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:22:55,068 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:22:55,068 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:22:55,069 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:54" (1/1) ... [2024-11-28 02:22:55,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 02:22:55,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:55,102 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 02:22:55,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-11-28 02:22:55,131 INFO L130 BoogieDeclarations]: Found specification of procedure new_ll [2024-11-28 02:22:55,131 INFO L138 BoogieDeclarations]: Found implementation of procedure new_ll [2024-11-28 02:22:55,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 02:22:55,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 02:22:55,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 02:22:55,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 02:22:55,132 INFO L130 BoogieDeclarations]: Found specification of procedure length [2024-11-28 02:22:55,132 INFO L138 BoogieDeclarations]: Found implementation of procedure length [2024-11-28 02:22:55,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:22:55,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:22:55,228 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:22:55,229 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:22:55,402 INFO L? ?]: Removed 31 outVars from TransFormulas that were not future-live. [2024-11-28 02:22:55,403 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:22:55,413 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:22:55,413 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 02:22:55,413 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:22:55 BoogieIcfgContainer [2024-11-28 02:22:55,413 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:22:55,414 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-28 02:22:55,414 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-28 02:22:55,421 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-28 02:22:55,421 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-28 02:22:55,422 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 02:22:54" (1/3) ... [2024-11-28 02:22:55,423 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3e90e37d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:22:55, skipping insertion in model container [2024-11-28 02:22:55,423 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-28 02:22:55,423 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:54" (2/3) ... [2024-11-28 02:22:55,423 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3e90e37d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:22:55, skipping insertion in model container [2024-11-28 02:22:55,423 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-28 02:22:55,424 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:22:55" (3/3) ... [2024-11-28 02:22:55,425 INFO L363 chiAutomizerObserver]: Analyzing ICFG ll_append-alloca-2.i [2024-11-28 02:22:55,480 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-28 02:22:55,481 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-28 02:22:55,482 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-28 02:22:55,482 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-28 02:22:55,482 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-28 02:22:55,483 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-28 02:22:55,483 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-28 02:22:55,484 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-28 02:22:55,489 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 28 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 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) [2024-11-28 02:22:55,508 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2024-11-28 02:22:55,508 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-28 02:22:55,508 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-28 02:22:55,514 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2024-11-28 02:22:55,514 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-28 02:22:55,515 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-28 02:22:55,515 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 28 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 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) [2024-11-28 02:22:55,517 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2024-11-28 02:22:55,517 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-28 02:22:55,517 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-28 02:22:55,517 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2024-11-28 02:22:55,517 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-28 02:22:55,524 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet8#1, main_#t~ret9#1.base, main_#t~ret9#1.offset, main_#t~ret10#1.base, main_#t~ret10#1.offset, main_#t~ret11#1, main_~n~0#1, main_~x~0#1.base, main_~x~0#1.offset, main_~y~0#1.base, main_~y~0#1.offset, main_~y_length~0#1;havoc main_#t~nondet8#1;main_~n~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;" "assume !(main_~n~0#1 < 1);" "call main_#t~ret9#1.base, main_#t~ret9#1.offset := new_ll(main_~n~0#1);"< [2024-11-28 02:22:55,524 INFO L749 eck$LassoCheckResult]: Loop: "~n := #in~n;" "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#0(~n, ~head~0.base, ~head~0.offset, 4);" "call #t~ret3.base, #t~ret3.offset := new_ll(~n - 1);"< [2024-11-28 02:22:55,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:55,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1418245, now seen corresponding path program 1 times [2024-11-28 02:22:55,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 02:22:55,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525724065] [2024-11-28 02:22:55,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:55,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:55,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:22:55,642 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:22:55,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:22:55,678 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 02:22:55,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:55,681 INFO L85 PathProgramCache]: Analyzing trace with hash 29968, now seen corresponding path program 1 times [2024-11-28 02:22:55,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 02:22:55,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104677859] [2024-11-28 02:22:55,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:55,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:55,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:22:55,726 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:22:55,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:22:55,752 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 02:22:55,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:55,754 INFO L85 PathProgramCache]: Analyzing trace with hash -698735988, now seen corresponding path program 1 times [2024-11-28 02:22:55,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 02:22:55,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480295087] [2024-11-28 02:22:55,754 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:55,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:55,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:22:55,776 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:22:55,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:22:55,795 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 02:22:56,865 INFO L204 LassoAnalysis]: Preferences: [2024-11-28 02:22:56,866 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-28 02:22:56,866 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-28 02:22:56,867 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-28 02:22:56,867 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-28 02:22:56,867 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 02:22:56,867 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-28 02:22:56,867 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-28 02:22:56,867 INFO L132 ssoRankerPreferences]: Filename of dumped script: ll_append-alloca-2.i_Iteration1_Lasso [2024-11-28 02:22:56,867 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-28 02:22:56,868 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-28 02:22:56,886 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:22:56,898 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:22:56,902 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:22:56,905 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:22:56,910 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:22:56,913 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:22:56,916 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:22:56,920 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:22:56,924 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:22:56,928 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:22:56,931 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:22:56,934 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:22:56,937 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:22:56,942 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:22:57,016 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:22:57,019 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:22:57,022 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:22:57,026 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:22:57,029 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:22:57,032 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:22:57,035 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:22:57,038 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:22:57,041 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:22:57,044 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:22:57,047 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:22:57,050 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:22:57,053 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:22:57,056 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:22:57,058 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:22:57,061 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:22:57,064 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:22:57,067 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:22:57,070 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:22:57,073 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:22:57,076 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:22:57,079 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:22:57,082 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:22:57,085 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:22:57,088 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:22:57,330 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-28 02:22:57,334 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-28 02:22:57,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 02:22:57,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:57,339 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 02:22:57,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2024-11-28 02:22:57,342 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 [2024-11-28 02:22:57,357 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-28 02:22:57,358 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-28 02:22:57,358 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-28 02:22:57,358 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-28 02:22:57,359 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-28 02:22:57,364 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-28 02:22:57,365 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-28 02:22:57,369 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-28 02:22:57,380 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2024-11-28 02:22:57,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 02:22:57,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:57,383 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 02:22:57,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2024-11-28 02:22:57,387 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-28 02:22:57,402 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-28 02:22:57,402 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-28 02:22:57,403 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-28 02:22:57,403 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-28 02:22:57,403 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-28 02:22:57,404 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-28 02:22:57,404 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-28 02:22:57,407 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-28 02:22:57,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:22:57,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 02:22:57,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:57,424 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 02:22:57,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-11-28 02:22:57,428 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 [2024-11-28 02:22:57,442 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-28 02:22:57,442 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-28 02:22:57,443 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-28 02:22:57,443 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-28 02:22:57,443 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-28 02:22:57,443 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-28 02:22:57,443 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-28 02:22:57,446 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-28 02:22:57,456 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2024-11-28 02:22:57,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 02:22:57,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:57,459 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 02:22:57,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-11-28 02:22:57,463 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 [2024-11-28 02:22:57,477 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-28 02:22:57,477 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-28 02:22:57,477 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-28 02:22:57,477 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-28 02:22:57,477 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-28 02:22:57,478 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-28 02:22:57,478 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-28 02:22:57,480 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-28 02:22:57,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2024-11-28 02:22:57,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 02:22:57,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:57,491 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 02:22:57,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2024-11-28 02:22:57,496 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 [2024-11-28 02:22:57,510 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-28 02:22:57,510 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-28 02:22:57,510 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-28 02:22:57,510 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-28 02:22:57,510 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-28 02:22:57,511 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-28 02:22:57,511 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-28 02:22:57,514 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-28 02:22:57,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2024-11-28 02:22:57,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 02:22:57,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:57,529 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 02:22:57,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-11-28 02:22:57,532 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 [2024-11-28 02:22:57,546 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-28 02:22:57,546 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-28 02:22:57,546 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-28 02:22:57,546 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-28 02:22:57,546 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-28 02:22:57,547 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-28 02:22:57,548 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-28 02:22:57,549 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-28 02:22:57,559 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2024-11-28 02:22:57,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 02:22:57,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:57,561 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 02:22:57,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-11-28 02:22:57,565 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 [2024-11-28 02:22:57,579 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-28 02:22:57,579 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-28 02:22:57,579 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-28 02:22:57,579 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-28 02:22:57,580 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-28 02:22:57,580 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-28 02:22:57,580 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-28 02:22:57,582 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-28 02:22:57,618 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2024-11-28 02:22:57,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 02:22:57,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:57,622 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 02:22:57,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-11-28 02:22:57,626 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 [2024-11-28 02:22:57,643 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-28 02:22:57,643 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-28 02:22:57,643 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-28 02:22:57,643 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-28 02:22:57,643 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-28 02:22:57,644 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-28 02:22:57,644 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-28 02:22:57,647 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-28 02:22:57,656 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2024-11-28 02:22:57,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 02:22:57,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:57,658 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 02:22:57,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2024-11-28 02:22:57,660 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 [2024-11-28 02:22:57,671 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-28 02:22:57,671 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-28 02:22:57,672 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-28 02:22:57,672 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-28 02:22:57,672 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-28 02:22:57,673 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-28 02:22:57,673 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-28 02:22:57,678 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-28 02:22:57,688 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2024-11-28 02:22:57,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 02:22:57,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:57,690 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 02:22:57,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-11-28 02:22:57,693 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 [2024-11-28 02:22:57,704 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-28 02:22:57,704 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-28 02:22:57,704 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-28 02:22:57,704 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-28 02:22:57,704 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-28 02:22:57,705 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-28 02:22:57,705 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-28 02:22:57,707 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-28 02:22:57,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2024-11-28 02:22:57,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 02:22:57,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:57,719 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 02:22:57,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2024-11-28 02:22:57,724 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 [2024-11-28 02:22:57,737 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-28 02:22:57,737 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-28 02:22:57,737 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-28 02:22:57,737 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-28 02:22:57,737 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-28 02:22:57,738 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-28 02:22:57,738 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-28 02:22:57,744 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-28 02:22:57,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2024-11-28 02:22:57,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 02:22:57,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:57,755 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 02:22:57,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-11-28 02:22:57,759 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 [2024-11-28 02:22:57,773 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-28 02:22:57,773 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-28 02:22:57,773 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-28 02:22:57,773 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-28 02:22:57,773 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-28 02:22:57,774 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-28 02:22:57,774 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-28 02:22:57,776 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-28 02:22:57,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2024-11-28 02:22:57,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 02:22:57,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:57,788 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 02:22:57,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-11-28 02:22:57,793 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 [2024-11-28 02:22:57,807 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-28 02:22:57,807 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-28 02:22:57,807 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-28 02:22:57,807 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-28 02:22:57,808 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-28 02:22:57,808 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-28 02:22:57,808 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-28 02:22:57,813 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-28 02:22:57,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2024-11-28 02:22:57,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 02:22:57,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:57,826 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 02:22:57,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2024-11-28 02:22:57,829 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 [2024-11-28 02:22:57,840 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-28 02:22:57,840 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-28 02:22:57,840 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2024-11-28 02:22:57,840 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-28 02:22:57,855 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2024-11-28 02:22:57,855 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2024-11-28 02:22:57,875 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-28 02:22:57,911 INFO L443 ModelExtractionUtils]: Simplification made 10 calls to the SMT solver. [2024-11-28 02:22:57,914 INFO L444 ModelExtractionUtils]: 1 out of 11 variables were initially zero. Simplification set additionally 7 variables to zero. [2024-11-28 02:22:57,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 02:22:57,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:57,923 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 02:22:57,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2024-11-28 02:22:57,926 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-28 02:22:57,944 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2024-11-28 02:22:57,944 INFO L474 LassoAnalysis]: Proved termination. [2024-11-28 02:22:57,945 INFO L476 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] [2024-11-28 02:22:57,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2024-11-28 02:22:57,965 INFO L156 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2024-11-28 02:22:58,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:58,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:58,031 INFO L256 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 02:22:58,032 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:22:58,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:58,095 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 02:22:58,096 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:22:58,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:22:58,188 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2024-11-28 02:22:58,191 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 28 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 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) [2024-11-28 02:22:58,358 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 28 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 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 46 states and 55 transitions. Complement of second has 17 states. [2024-11-28 02:22:58,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-11-28 02:22:58,364 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) [2024-11-28 02:22:58,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 12 transitions. [2024-11-28 02:22:58,371 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 12 transitions. Stem has 4 letters. Loop has 3 letters. [2024-11-28 02:22:58,372 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-28 02:22:58,372 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 12 transitions. Stem has 7 letters. Loop has 3 letters. [2024-11-28 02:22:58,372 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-28 02:22:58,373 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 12 transitions. Stem has 4 letters. Loop has 6 letters. [2024-11-28 02:22:58,373 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-28 02:22:58,373 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 55 transitions. [2024-11-28 02:22:58,376 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2024-11-28 02:22:58,383 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 30 states and 38 transitions. [2024-11-28 02:22:58,385 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2024-11-28 02:22:58,385 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2024-11-28 02:22:58,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 38 transitions. [2024-11-28 02:22:58,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-28 02:22:58,388 INFO L218 hiAutomatonCegarLoop]: Abstraction has 30 states and 38 transitions. [2024-11-28 02:22:58,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 38 transitions. [2024-11-28 02:22:58,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2024-11-28 02:22:58,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 22 states have internal predecessors, (26), 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) [2024-11-28 02:22:58,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2024-11-28 02:22:58,423 INFO L240 hiAutomatonCegarLoop]: Abstraction has 28 states and 34 transitions. [2024-11-28 02:22:58,423 INFO L425 stractBuchiCegarLoop]: Abstraction has 28 states and 34 transitions. [2024-11-28 02:22:58,424 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-28 02:22:58,424 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 34 transitions. [2024-11-28 02:22:58,425 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2024-11-28 02:22:58,425 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-28 02:22:58,425 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-28 02:22:58,426 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:22:58,426 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-28 02:22:58,426 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet8#1, main_#t~ret9#1.base, main_#t~ret9#1.offset, main_#t~ret10#1.base, main_#t~ret10#1.offset, main_#t~ret11#1, main_~n~0#1, main_~x~0#1.base, main_~x~0#1.offset, main_~y~0#1.base, main_~y~0#1.offset, main_~y_length~0#1;havoc main_#t~nondet8#1;main_~n~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;" "assume !(main_~n~0#1 < 1);" "call main_#t~ret9#1.base, main_#t~ret9#1.offset := new_ll(main_~n~0#1);"< "~n := #in~n;" "assume 0 == ~n;#res.base, #res.offset := 0, 0;" "assume true;" >"#58#return;" "main_~x~0#1.base, main_~x~0#1.offset := main_#t~ret9#1.base, main_#t~ret9#1.offset;havoc main_#t~ret9#1.base, main_#t~ret9#1.offset;assume { :begin_inline_append } true;append_#in~x#1.base, append_#in~x#1.offset, append_#in~y#1.base, append_#in~y#1.offset := main_~x~0#1.base, main_~x~0#1.offset, main_~x~0#1.base, main_~x~0#1.offset;havoc append_#res#1.base, append_#res#1.offset;havoc append_#t~mem6#1.base, append_#t~mem6#1.offset, append_#t~mem7#1.base, append_#t~mem7#1.offset, append_~x#1.base, append_~x#1.offset, append_~y#1.base, append_~y#1.offset, append_~s~0#1.base, append_~s~0#1.offset;append_~x#1.base, append_~x#1.offset := append_#in~x#1.base, append_#in~x#1.offset;append_~y#1.base, append_~y#1.offset := append_#in~y#1.base, append_#in~y#1.offset;" "assume !(append_~x#1.base == 0 && append_~x#1.offset == 0);append_~s~0#1.base, append_~s~0#1.offset := append_~x#1.base, append_~x#1.offset;" [2024-11-28 02:22:58,426 INFO L749 eck$LassoCheckResult]: Loop: "call append_#t~mem6#1.base, append_#t~mem6#1.offset := read~$Pointer$#0(append_~x#1.base, 4 + append_~x#1.offset, 8);" "assume append_#t~mem6#1.base != 0 || append_#t~mem6#1.offset != 0;havoc append_#t~mem6#1.base, append_#t~mem6#1.offset;" "call append_#t~mem7#1.base, append_#t~mem7#1.offset := read~$Pointer$#0(append_~x#1.base, 4 + append_~x#1.offset, 8);append_~x#1.base, append_~x#1.offset := append_#t~mem7#1.base, append_#t~mem7#1.offset;" [2024-11-28 02:22:58,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:58,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1660427840, now seen corresponding path program 1 times [2024-11-28 02:22:58,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 02:22:58,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267840462] [2024-11-28 02:22:58,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:58,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:58,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:58,651 INFO L370 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-28 02:22:58,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:58,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL_NO_AM found an infeasible trace [2024-11-28 02:22:58,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267840462] [2024-11-28 02:22:58,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267840462] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:22:58,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450884554] [2024-11-28 02:22:58,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:58,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:58,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:58,733 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:22:58,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 02:22:58,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:58,793 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:22:58,794 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:22:58,843 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:22:58,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450884554] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:22:58,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:22:58,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-28 02:22:58,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242282541] [2024-11-28 02:22:58,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:22:58,941 INFO L752 eck$LassoCheckResult]: stem already infeasible [2024-11-28 02:22:58,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:58,943 INFO L85 PathProgramCache]: Analyzing trace with hash 63653, now seen corresponding path program 1 times [2024-11-28 02:22:58,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 02:22:58,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828620138] [2024-11-28 02:22:58,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:58,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:58,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:22:58,954 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:22:58,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:22:58,963 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 02:22:59,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2024-11-28 02:22:59,044 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:22:59,045 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:22:59,046 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. cyclomatic complexity: 9 Second operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:22:59,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:22:59,199 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2024-11-28 02:22:59,200 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 32 transitions. [2024-11-28 02:22:59,201 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2024-11-28 02:22:59,203 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 25 states and 29 transitions. [2024-11-28 02:22:59,204 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2024-11-28 02:22:59,204 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 22 [2024-11-28 02:22:59,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 29 transitions. [2024-11-28 02:22:59,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-28 02:22:59,205 INFO L218 hiAutomatonCegarLoop]: Abstraction has 25 states and 29 transitions. [2024-11-28 02:22:59,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 29 transitions. [2024-11-28 02:22:59,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-28 02:22:59,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 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) [2024-11-28 02:22:59,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2024-11-28 02:22:59,208 INFO L240 hiAutomatonCegarLoop]: Abstraction has 25 states and 29 transitions. [2024-11-28 02:22:59,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:22:59,209 INFO L425 stractBuchiCegarLoop]: Abstraction has 25 states and 29 transitions. [2024-11-28 02:22:59,210 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-11-28 02:22:59,210 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 29 transitions. [2024-11-28 02:22:59,210 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2024-11-28 02:22:59,210 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-28 02:22:59,210 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-28 02:22:59,211 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:22:59,211 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-28 02:22:59,211 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet8#1, main_#t~ret9#1.base, main_#t~ret9#1.offset, main_#t~ret10#1.base, main_#t~ret10#1.offset, main_#t~ret11#1, main_~n~0#1, main_~x~0#1.base, main_~x~0#1.offset, main_~y~0#1.base, main_~y~0#1.offset, main_~y_length~0#1;havoc main_#t~nondet8#1;main_~n~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;" "assume !(main_~n~0#1 < 1);" "call main_#t~ret9#1.base, main_#t~ret9#1.offset := new_ll(main_~n~0#1);"< "~n := #in~n;" "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#0(~n, ~head~0.base, ~head~0.offset, 4);" "call #t~ret3.base, #t~ret3.offset := new_ll(~n - 1);"< "~n := #in~n;" "assume 0 == ~n;#res.base, #res.offset := 0, 0;" "assume true;" >"#54#return;" "call write~$Pointer$#0(#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;" "assume true;" >"#58#return;" "main_~x~0#1.base, main_~x~0#1.offset := main_#t~ret9#1.base, main_#t~ret9#1.offset;havoc main_#t~ret9#1.base, main_#t~ret9#1.offset;assume { :begin_inline_append } true;append_#in~x#1.base, append_#in~x#1.offset, append_#in~y#1.base, append_#in~y#1.offset := main_~x~0#1.base, main_~x~0#1.offset, main_~x~0#1.base, main_~x~0#1.offset;havoc append_#res#1.base, append_#res#1.offset;havoc append_#t~mem6#1.base, append_#t~mem6#1.offset, append_#t~mem7#1.base, append_#t~mem7#1.offset, append_~x#1.base, append_~x#1.offset, append_~y#1.base, append_~y#1.offset, append_~s~0#1.base, append_~s~0#1.offset;append_~x#1.base, append_~x#1.offset := append_#in~x#1.base, append_#in~x#1.offset;append_~y#1.base, append_~y#1.offset := append_#in~y#1.base, append_#in~y#1.offset;" "assume !(append_~x#1.base == 0 && append_~x#1.offset == 0);append_~s~0#1.base, append_~s~0#1.offset := append_~x#1.base, append_~x#1.offset;" [2024-11-28 02:22:59,211 INFO L749 eck$LassoCheckResult]: Loop: "call append_#t~mem6#1.base, append_#t~mem6#1.offset := read~$Pointer$#0(append_~x#1.base, 4 + append_~x#1.offset, 8);" "assume append_#t~mem6#1.base != 0 || append_#t~mem6#1.offset != 0;havoc append_#t~mem6#1.base, append_#t~mem6#1.offset;" "call append_#t~mem7#1.base, append_#t~mem7#1.offset := read~$Pointer$#0(append_~x#1.base, 4 + append_~x#1.offset, 8);append_~x#1.base, append_~x#1.offset := append_#t~mem7#1.base, append_#t~mem7#1.offset;" [2024-11-28 02:22:59,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:59,212 INFO L85 PathProgramCache]: Analyzing trace with hash 243493472, now seen corresponding path program 1 times [2024-11-28 02:22:59,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 02:22:59,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962404161] [2024-11-28 02:22:59,212 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:59,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:59,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:22:59,246 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:22:59,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:22:59,281 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 02:22:59,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:59,282 INFO L85 PathProgramCache]: Analyzing trace with hash 63653, now seen corresponding path program 2 times [2024-11-28 02:22:59,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 02:22:59,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81529665] [2024-11-28 02:22:59,282 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:59,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:59,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:22:59,289 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:22:59,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:22:59,297 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 02:22:59,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:59,298 INFO L85 PathProgramCache]: Analyzing trace with hash -285704730, now seen corresponding path program 1 times [2024-11-28 02:22:59,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 02:22:59,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785326339] [2024-11-28 02:22:59,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:59,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:59,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:59,368 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2024-11-28 02:22:59,918 INFO L370 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-28 02:22:59,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:00,185 INFO L370 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-28 02:23:00,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:00,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL_NO_AM found an infeasible trace [2024-11-28 02:23:00,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785326339] [2024-11-28 02:23:00,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785326339] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:00,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265992960] [2024-11-28 02:23:00,268 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:00,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:00,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:00,271 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:00,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 02:23:00,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:00,364 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-28 02:23:00,367 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:00,446 INFO L378 Elim1Store]: Elim1 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 13 treesize of output 9 [2024-11-28 02:23:00,452 INFO L378 Elim1Store]: Elim1 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 13 treesize of output 9 [2024-11-28 02:23:00,500 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:00,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265992960] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:00,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:00,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 11 [2024-11-28 02:23:00,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464413440] [2024-11-28 02:23:00,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:00,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2024-11-28 02:23:00,737 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:23:00,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:23:00,737 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. cyclomatic complexity: 7 Second operand has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 02:23:01,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:01,015 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2024-11-28 02:23:01,015 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 39 transitions. [2024-11-28 02:23:01,016 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2024-11-28 02:23:01,018 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 33 states and 39 transitions. [2024-11-28 02:23:01,018 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2024-11-28 02:23:01,018 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 30 [2024-11-28 02:23:01,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 39 transitions. [2024-11-28 02:23:01,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-28 02:23:01,018 INFO L218 hiAutomatonCegarLoop]: Abstraction has 33 states and 39 transitions. [2024-11-28 02:23:01,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states and 39 transitions. [2024-11-28 02:23:01,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2024-11-28 02:23:01,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 25 states have (on average 1.16) internal successors, (29), 24 states have internal predecessors, (29), 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) [2024-11-28 02:23:01,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2024-11-28 02:23:01,021 INFO L240 hiAutomatonCegarLoop]: Abstraction has 32 states and 38 transitions. [2024-11-28 02:23:01,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 02:23:01,023 INFO L425 stractBuchiCegarLoop]: Abstraction has 32 states and 38 transitions. [2024-11-28 02:23:01,023 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-11-28 02:23:01,023 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 38 transitions. [2024-11-28 02:23:01,024 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2024-11-28 02:23:01,024 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-28 02:23:01,024 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-28 02:23:01,024 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:01,024 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-28 02:23:01,025 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet8#1, main_#t~ret9#1.base, main_#t~ret9#1.offset, main_#t~ret10#1.base, main_#t~ret10#1.offset, main_#t~ret11#1, main_~n~0#1, main_~x~0#1.base, main_~x~0#1.offset, main_~y~0#1.base, main_~y~0#1.offset, main_~y_length~0#1;havoc main_#t~nondet8#1;main_~n~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;" "assume !(main_~n~0#1 < 1);" "call main_#t~ret9#1.base, main_#t~ret9#1.offset := new_ll(main_~n~0#1);"< "~n := #in~n;" "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#0(~n, ~head~0.base, ~head~0.offset, 4);" "call #t~ret3.base, #t~ret3.offset := new_ll(~n - 1);"< "~n := #in~n;" "assume 0 == ~n;#res.base, #res.offset := 0, 0;" "assume true;" >"#54#return;" "call write~$Pointer$#0(#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;" "assume true;" >"#58#return;" "main_~x~0#1.base, main_~x~0#1.offset := main_#t~ret9#1.base, main_#t~ret9#1.offset;havoc main_#t~ret9#1.base, main_#t~ret9#1.offset;assume { :begin_inline_append } true;append_#in~x#1.base, append_#in~x#1.offset, append_#in~y#1.base, append_#in~y#1.offset := main_~x~0#1.base, main_~x~0#1.offset, main_~x~0#1.base, main_~x~0#1.offset;havoc append_#res#1.base, append_#res#1.offset;havoc append_#t~mem6#1.base, append_#t~mem6#1.offset, append_#t~mem7#1.base, append_#t~mem7#1.offset, append_~x#1.base, append_~x#1.offset, append_~y#1.base, append_~y#1.offset, append_~s~0#1.base, append_~s~0#1.offset;append_~x#1.base, append_~x#1.offset := append_#in~x#1.base, append_#in~x#1.offset;append_~y#1.base, append_~y#1.offset := append_#in~y#1.base, append_#in~y#1.offset;" "assume append_~x#1.base == 0 && append_~x#1.offset == 0;append_#res#1.base, append_#res#1.offset := append_~y#1.base, append_~y#1.offset;" "main_#t~ret10#1.base, main_#t~ret10#1.offset := append_#res#1.base, append_#res#1.offset;havoc append_#t~mem6#1.base, append_#t~mem6#1.offset, append_#t~mem7#1.base, append_#t~mem7#1.offset, append_~x#1.base, append_~x#1.offset, append_~y#1.base, append_~y#1.offset, append_~s~0#1.base, append_~s~0#1.offset;havoc append_#in~x#1.base, append_#in~x#1.offset, append_#in~y#1.base, append_#in~y#1.offset;assume { :end_inline_append } true;main_~y~0#1.base, main_~y~0#1.offset := main_#t~ret10#1.base, main_#t~ret10#1.offset;havoc main_#t~ret10#1.base, main_#t~ret10#1.offset;" "call main_#t~ret11#1 := length(main_~y~0#1.base, main_~y~0#1.offset);"< [2024-11-28 02:23:01,025 INFO L749 eck$LassoCheckResult]: Loop: "~xs.base, ~xs.offset := #in~xs.base, #in~xs.offset;" "assume !(~xs.base == 0 && ~xs.offset == 0);call #t~mem4.base, #t~mem4.offset := read~$Pointer$#0(~xs.base, 4 + ~xs.offset, 8);" "call #t~ret5 := length(#t~mem4.base, #t~mem4.offset);"< [2024-11-28 02:23:01,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:01,025 INFO L85 PathProgramCache]: Analyzing trace with hash 2068992202, now seen corresponding path program 1 times [2024-11-28 02:23:01,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 02:23:01,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134973467] [2024-11-28 02:23:01,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:01,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:01,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:01,115 INFO L370 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-28 02:23:01,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:01,169 INFO L370 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-28 02:23:01,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:01,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL_NO_AM found an infeasible trace [2024-11-28 02:23:01,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134973467] [2024-11-28 02:23:01,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134973467] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:01,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82837026] [2024-11-28 02:23:01,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:01,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:01,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:01,185 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:01,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 02:23:01,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:01,270 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 02:23:01,272 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:01,292 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:01,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82837026] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:01,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:01,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 7 [2024-11-28 02:23:01,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542373541] [2024-11-28 02:23:01,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:01,335 INFO L752 eck$LassoCheckResult]: stem already infeasible [2024-11-28 02:23:01,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:01,335 INFO L85 PathProgramCache]: Analyzing trace with hash 37906, now seen corresponding path program 1 times [2024-11-28 02:23:01,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 02:23:01,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537606932] [2024-11-28 02:23:01,335 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:01,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:01,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:23:01,342 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:23:01,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:23:01,348 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 02:23:01,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2024-11-28 02:23:01,500 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:23:01,500 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:23:01,500 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. cyclomatic complexity: 9 Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:23:01,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:01,569 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2024-11-28 02:23:01,569 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 41 transitions. [2024-11-28 02:23:01,570 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2024-11-28 02:23:01,571 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 36 states and 41 transitions. [2024-11-28 02:23:01,571 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2024-11-28 02:23:01,571 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2024-11-28 02:23:01,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 41 transitions. [2024-11-28 02:23:01,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-28 02:23:01,571 INFO L218 hiAutomatonCegarLoop]: Abstraction has 36 states and 41 transitions. [2024-11-28 02:23:01,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 41 transitions. [2024-11-28 02:23:01,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2024-11-28 02:23:01,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 25 states have (on average 1.08) internal successors, (27), 24 states have internal predecessors, (27), 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) [2024-11-28 02:23:01,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2024-11-28 02:23:01,581 INFO L240 hiAutomatonCegarLoop]: Abstraction has 32 states and 36 transitions. [2024-11-28 02:23:01,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:23:01,584 INFO L425 stractBuchiCegarLoop]: Abstraction has 32 states and 36 transitions. [2024-11-28 02:23:01,584 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-11-28 02:23:01,584 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 36 transitions. [2024-11-28 02:23:01,585 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2024-11-28 02:23:01,585 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-28 02:23:01,585 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-28 02:23:01,585 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:01,585 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-28 02:23:01,586 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet8#1, main_#t~ret9#1.base, main_#t~ret9#1.offset, main_#t~ret10#1.base, main_#t~ret10#1.offset, main_#t~ret11#1, main_~n~0#1, main_~x~0#1.base, main_~x~0#1.offset, main_~y~0#1.base, main_~y~0#1.offset, main_~y_length~0#1;havoc main_#t~nondet8#1;main_~n~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;" "assume !(main_~n~0#1 < 1);" "call main_#t~ret9#1.base, main_#t~ret9#1.offset := new_ll(main_~n~0#1);"< "~n := #in~n;" "assume !(0 == ~n);call #t~malloc2.base, #t~malloc2.offset := #Ultimate.allocOnHeap(12);~head~0.base, ~head~0.offset := #t~malloc2.base, #t~malloc2.offset;havoc #t~malloc2.base, #t~malloc2.offset;call write~int#0(~n, ~head~0.base, ~head~0.offset, 4);" "call #t~ret3.base, #t~ret3.offset := new_ll(~n - 1);"< "~n := #in~n;" "assume 0 == ~n;#res.base, #res.offset := 0, 0;" "assume true;" >"#54#return;" "call write~$Pointer$#0(#t~ret3.base, #t~ret3.offset, ~head~0.base, 4 + ~head~0.offset, 8);havoc #t~ret3.base, #t~ret3.offset;#res.base, #res.offset := ~head~0.base, ~head~0.offset;" "assume true;" >"#58#return;" "main_~x~0#1.base, main_~x~0#1.offset := main_#t~ret9#1.base, main_#t~ret9#1.offset;havoc main_#t~ret9#1.base, main_#t~ret9#1.offset;assume { :begin_inline_append } true;append_#in~x#1.base, append_#in~x#1.offset, append_#in~y#1.base, append_#in~y#1.offset := main_~x~0#1.base, main_~x~0#1.offset, main_~x~0#1.base, main_~x~0#1.offset;havoc append_#res#1.base, append_#res#1.offset;havoc append_#t~mem6#1.base, append_#t~mem6#1.offset, append_#t~mem7#1.base, append_#t~mem7#1.offset, append_~x#1.base, append_~x#1.offset, append_~y#1.base, append_~y#1.offset, append_~s~0#1.base, append_~s~0#1.offset;append_~x#1.base, append_~x#1.offset := append_#in~x#1.base, append_#in~x#1.offset;append_~y#1.base, append_~y#1.offset := append_#in~y#1.base, append_#in~y#1.offset;" "assume !(append_~x#1.base == 0 && append_~x#1.offset == 0);append_~s~0#1.base, append_~s~0#1.offset := append_~x#1.base, append_~x#1.offset;" "call append_#t~mem6#1.base, append_#t~mem6#1.offset := read~$Pointer$#0(append_~x#1.base, 4 + append_~x#1.offset, 8);" "assume !(append_#t~mem6#1.base != 0 || append_#t~mem6#1.offset != 0);havoc append_#t~mem6#1.base, append_#t~mem6#1.offset;" "call write~$Pointer$#0(append_~y#1.base, append_~y#1.offset, append_~x#1.base, 4 + append_~x#1.offset, 8);append_#res#1.base, append_#res#1.offset := append_~s~0#1.base, append_~s~0#1.offset;" "main_#t~ret10#1.base, main_#t~ret10#1.offset := append_#res#1.base, append_#res#1.offset;havoc append_#t~mem6#1.base, append_#t~mem6#1.offset, append_#t~mem7#1.base, append_#t~mem7#1.offset, append_~x#1.base, append_~x#1.offset, append_~y#1.base, append_~y#1.offset, append_~s~0#1.base, append_~s~0#1.offset;havoc append_#in~x#1.base, append_#in~x#1.offset, append_#in~y#1.base, append_#in~y#1.offset;assume { :end_inline_append } true;main_~y~0#1.base, main_~y~0#1.offset := main_#t~ret10#1.base, main_#t~ret10#1.offset;havoc main_#t~ret10#1.base, main_#t~ret10#1.offset;" "call main_#t~ret11#1 := length(main_~y~0#1.base, main_~y~0#1.offset);"< [2024-11-28 02:23:01,586 INFO L749 eck$LassoCheckResult]: Loop: "~xs.base, ~xs.offset := #in~xs.base, #in~xs.offset;" "assume !(~xs.base == 0 && ~xs.offset == 0);call #t~mem4.base, #t~mem4.offset := read~$Pointer$#0(~xs.base, 4 + ~xs.offset, 8);" "call #t~ret5 := length(#t~mem4.base, #t~mem4.offset);"< [2024-11-28 02:23:01,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:01,587 INFO L85 PathProgramCache]: Analyzing trace with hash 315726356, now seen corresponding path program 1 times [2024-11-28 02:23:01,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 02:23:01,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101185441] [2024-11-28 02:23:01,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:01,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:01,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:23:01,618 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:23:01,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:23:01,646 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 02:23:01,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:01,646 INFO L85 PathProgramCache]: Analyzing trace with hash 37906, now seen corresponding path program 2 times [2024-11-28 02:23:01,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 02:23:01,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605672652] [2024-11-28 02:23:01,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:01,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:01,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:23:01,655 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:23:01,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:23:01,658 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 02:23:01,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:01,659 INFO L85 PathProgramCache]: Analyzing trace with hash -174498529, now seen corresponding path program 1 times [2024-11-28 02:23:01,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 02:23:01,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525393067] [2024-11-28 02:23:01,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:01,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:01,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:23:01,694 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:23:01,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:23:01,728 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 02:23:03,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:23:03,909 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:23:03,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:23:04,006 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 02:23:04 BoogieIcfgContainer [2024-11-28 02:23:04,007 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-28 02:23:04,008 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 02:23:04,008 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 02:23:04,009 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 02:23:04,009 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:22:55" (3/4) ... [2024-11-28 02:23:04,012 INFO L143 WitnessPrinter]: Generating witness for non-termination counterexample [2024-11-28 02:23:04,063 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 02:23:04,064 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 02:23:04,065 INFO L158 Benchmark]: Toolchain (without parser) took 9450.01ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 118.5MB in the beginning and 295.8MB in the end (delta: -177.3MB). Peak memory consumption was 102.9MB. Max. memory is 16.1GB. [2024-11-28 02:23:04,066 INFO L158 Benchmark]: CDTParser took 0.77ms. Allocated memory is still 142.6MB. Free memory is still 79.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:23:04,067 INFO L158 Benchmark]: CACSL2BoogieTranslator took 380.93ms. Allocated memory is still 142.6MB. Free memory was 118.3MB in the beginning and 101.8MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 02:23:04,067 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.04ms. Allocated memory is still 142.6MB. Free memory was 101.8MB in the beginning and 100.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:23:04,068 INFO L158 Benchmark]: Boogie Preprocessor took 38.11ms. Allocated memory is still 142.6MB. Free memory was 100.4MB in the beginning and 98.7MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:23:04,068 INFO L158 Benchmark]: RCFGBuilder took 345.96ms. Allocated memory is still 142.6MB. Free memory was 98.7MB in the beginning and 85.6MB in the end (delta: 13.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 02:23:04,068 INFO L158 Benchmark]: BuchiAutomizer took 8592.49ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 85.4MB in the beginning and 299.6MB in the end (delta: -214.3MB). Peak memory consumption was 69.3MB. Max. memory is 16.1GB. [2024-11-28 02:23:04,068 INFO L158 Benchmark]: Witness Printer took 55.80ms. Allocated memory is still 427.8MB. Free memory was 299.6MB in the beginning and 295.8MB in the end (delta: 3.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:23:04,070 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.77ms. Allocated memory is still 142.6MB. Free memory is still 79.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 380.93ms. Allocated memory is still 142.6MB. Free memory was 118.3MB in the beginning and 101.8MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.04ms. Allocated memory is still 142.6MB. Free memory was 101.8MB in the beginning and 100.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 38.11ms. Allocated memory is still 142.6MB. Free memory was 100.4MB in the beginning and 98.7MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 345.96ms. Allocated memory is still 142.6MB. Free memory was 98.7MB in the beginning and 85.6MB in the end (delta: 13.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * BuchiAutomizer took 8592.49ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 85.4MB in the beginning and 299.6MB in the end (delta: -214.3MB). Peak memory consumption was 69.3MB. Max. memory is 16.1GB. * Witness Printer took 55.80ms. Allocated memory is still 427.8MB. Free memory was 299.6MB in the beginning and 295.8MB in the end (delta: 3.9MB). There was no memory consumed. Max. memory is 16.1GB. * 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 6 locations. 3 modules have a trivial ranking function, the largest among these consists of 11 locations. The remainder module has 32 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 8.4s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 7.4s. Construction of modules took 0.3s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 7 StatesRemovedByMinimization, 3 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, 58 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 52 mSDsluCounter, 307 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 251 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 323 IncrementalHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 56 mSDtfsCounter, 323 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU2 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital138 mio100 ax100 hnf100 lsp100 ukn31 mio100 lsp39 div100 bol100 ite100 ukn100 eq217 hnf86 smp100 dnf112 smp100 tf100 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 120ms VariablesStem: 1 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 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: 555]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L573] int n = __VERIFIER_nondet_int(); [L574] COND FALSE !(n < 1) VAL [n=1] [L577] CALL, EXPR new_ll(n) VAL [\old(n)=1] [L548] COND FALSE !(n == 0) [L550] node_t* head = malloc(sizeof(node_t)); [L551] head->val = n VAL [\old(n)=1, head={4839:0}, n=1] [L552] CALL, EXPR new_ll(n-1) VAL [\old(n)=0] [L548] COND TRUE n == 0 [L549] return ((void *)0); VAL [\old(n)=0, \result={0:0}] [L552] RET, EXPR new_ll(n-1) VAL [\old(n)=1, head={4839:0}, n=1] [L552] head->next = new_ll(n-1) [L553] return head; VAL [\old(n)=1, \result={4839:0}, n=1] [L577] RET, EXPR new_ll(n) VAL [n=1] [L577] node_t* x = new_ll(n); [L578] CALL, EXPR append(x, x) [L563] COND FALSE !(x == ((void *)0)) [L565] node_t* s = x; VAL [s={4839:0}, x={4839:0}, y={4839:0}] [L566] EXPR x->next [L566] COND FALSE !(x->next != ((void *)0)) [L568] x->next = y [L569] return s; VAL [\result={4839:0}] [L578] RET, EXPR append(x, x) [L578] node_t* y = append(x, x); [L579] CALL length(y) VAL [\old(xs)={4839:0}] Loop: [L557] COND FALSE !(xs == ((void *)0)) [L559] EXPR xs->next [L559] CALL length(xs->next) End of lasso representation. - 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) VAL [n=1] [L577] CALL, EXPR new_ll(n) VAL [\old(n)=1] [L548] COND FALSE !(n == 0) [L550] node_t* head = malloc(sizeof(node_t)); [L551] head->val = n VAL [\old(n)=1, head={4839:0}, n=1] [L552] CALL, EXPR new_ll(n-1) VAL [\old(n)=0] [L548] COND TRUE n == 0 [L549] return ((void *)0); VAL [\old(n)=0, \result={0:0}] [L552] RET, EXPR new_ll(n-1) VAL [\old(n)=1, head={4839:0}, n=1] [L552] head->next = new_ll(n-1) [L553] return head; VAL [\old(n)=1, \result={4839:0}, n=1] [L577] RET, EXPR new_ll(n) VAL [n=1] [L577] node_t* x = new_ll(n); [L578] CALL, EXPR append(x, x) [L563] COND FALSE !(x == ((void *)0)) [L565] node_t* s = x; VAL [s={4839:0}, x={4839:0}, y={4839:0}] [L566] EXPR x->next [L566] COND FALSE !(x->next != ((void *)0)) [L568] x->next = y [L569] return s; VAL [\result={4839:0}] [L578] RET, EXPR append(x, x) [L578] node_t* y = append(x, x); [L579] CALL length(y) VAL [\old(xs)={4839:0}] 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! [2024-11-28 02:23:04,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-28 02:23:04,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-28 02:23:04,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-28 02:23:04,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9b4606-019b-4f3e-9891-36b108d8cbb4/bin/uautomizer-verify-aQ6SnzHsRB/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)