./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-dietlibc/strrchr.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-dietlibc/strrchr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC --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 b850f5453e922b3972aa9b5b79a1b07337c08d581cc5e6a2a56803408dc479cf --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:50:34,251 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:50:34,359 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-11-24 01:50:34,368 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:50:34,368 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:50:34,412 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:50:34,413 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:50:34,413 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:50:34,414 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:50:34,414 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:50:34,415 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:50:34,416 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:50:34,416 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:50:34,416 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-24 01:50:34,416 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-24 01:50:34,416 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-24 01:50:34,417 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-24 01:50:34,417 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-24 01:50:34,417 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-24 01:50:34,418 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:50:34,418 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-24 01:50:34,418 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:50:34,418 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:50:34,418 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-24 01:50:34,419 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-24 01:50:34,419 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-24 01:50:34,419 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-24 01:50:34,419 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:50:34,419 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-24 01:50:34,419 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:50:34,420 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:50:34,420 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:50:34,420 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:50:34,421 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:50:34,421 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL_NO_AM [2024-11-24 01:50:34,421 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-24 01:50:34,421 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_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC 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 -> b850f5453e922b3972aa9b5b79a1b07337c08d581cc5e6a2a56803408dc479cf [2024-11-24 01:50:34,802 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:50:34,813 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:50:34,820 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:50:34,822 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:50:34,823 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:50:34,826 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/termination-dietlibc/strrchr.i [2024-11-24 01:50:38,283 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/data/44656696f/9c7f38a005ba49248908d08a9b30fea7/FLAGc606134e4 [2024-11-24 01:50:38,586 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:50:38,586 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/sv-benchmarks/c/termination-dietlibc/strrchr.i [2024-11-24 01:50:38,599 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/data/44656696f/9c7f38a005ba49248908d08a9b30fea7/FLAGc606134e4 [2024-11-24 01:50:38,615 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/data/44656696f/9c7f38a005ba49248908d08a9b30fea7 [2024-11-24 01:50:38,617 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:50:38,619 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:50:38,620 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:50:38,622 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:50:38,627 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:50:38,628 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:50:38" (1/1) ... [2024-11-24 01:50:38,631 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21fb54b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:50:38, skipping insertion in model container [2024-11-24 01:50:38,632 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:50:38" (1/1) ... [2024-11-24 01:50:38,677 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:50:39,028 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:50:39,042 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:50:39,100 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:50:39,145 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:50:39,145 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:50:39 WrapperNode [2024-11-24 01:50:39,146 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:50:39,147 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:50:39,147 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:50:39,147 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:50:39,154 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:50:39" (1/1) ... [2024-11-24 01:50:39,165 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:50:39" (1/1) ... [2024-11-24 01:50:39,188 INFO L138 Inliner]: procedures = 114, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 100 [2024-11-24 01:50:39,188 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:50:39,189 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:50:39,189 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:50:39,189 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:50:39,199 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:50:39" (1/1) ... [2024-11-24 01:50:39,199 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:50:39" (1/1) ... [2024-11-24 01:50:39,204 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:50:39" (1/1) ... [2024-11-24 01:50:39,233 INFO L175 MemorySlicer]: Split 10 memory accesses to 1 slices as follows [10]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 2 writes are split as follows [2]. [2024-11-24 01:50:39,233 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:50:39" (1/1) ... [2024-11-24 01:50:39,235 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:50:39" (1/1) ... [2024-11-24 01:50:39,245 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:50:39" (1/1) ... [2024-11-24 01:50:39,249 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:50:39" (1/1) ... [2024-11-24 01:50:39,253 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:50:39" (1/1) ... [2024-11-24 01:50:39,254 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:50:39" (1/1) ... [2024-11-24 01:50:39,255 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:50:39" (1/1) ... [2024-11-24 01:50:39,258 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:50:39,259 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:50:39,259 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:50:39,259 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:50:39,260 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:50:39" (1/1) ... [2024-11-24 01:50:39,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:50:39,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:50:39,301 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 01:50:39,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-11-24 01:50:39,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-24 01:50:39,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-24 01:50:39,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-24 01:50:39,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-24 01:50:39,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:50:39,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:50:39,456 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:50:39,458 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:50:39,768 INFO L? ?]: Removed 23 outVars from TransFormulas that were not future-live. [2024-11-24 01:50:39,772 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:50:39,786 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:50:39,788 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 01:50:39,788 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:50:39 BoogieIcfgContainer [2024-11-24 01:50:39,789 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:50:39,790 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-24 01:50:39,790 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-24 01:50:39,798 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-24 01:50:39,799 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-24 01:50:39,799 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 24.11 01:50:38" (1/3) ... [2024-11-24 01:50:39,801 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@73b81bf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 24.11 01:50:39, skipping insertion in model container [2024-11-24 01:50:39,801 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-24 01:50:39,802 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:50:39" (2/3) ... [2024-11-24 01:50:39,803 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@73b81bf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 24.11 01:50:39, skipping insertion in model container [2024-11-24 01:50:39,804 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-24 01:50:39,804 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:50:39" (3/3) ... [2024-11-24 01:50:39,806 INFO L363 chiAutomizerObserver]: Analyzing ICFG strrchr.i [2024-11-24 01:50:39,879 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-24 01:50:39,880 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-24 01:50:39,880 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-24 01:50:39,880 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-24 01:50:39,880 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-24 01:50:39,881 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-24 01:50:39,881 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-24 01:50:39,881 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-24 01:50:39,888 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 23 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:50:39,910 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 15 [2024-11-24 01:50:39,911 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-24 01:50:39,911 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-24 01:50:39,919 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-24 01:50:39,919 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-24 01:50:39,919 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-24 01:50:39,920 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 23 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:50:39,921 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 15 [2024-11-24 01:50:39,923 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-24 01:50:39,923 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-24 01:50:39,923 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-24 01:50:39,923 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-24 01:50:39,932 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet14#1, main_#t~malloc15#1.base, main_#t~malloc15#1.offset, main_#t~nondet16#1, main_#t~post17#1, main_~i~0#1, main_#t~nondet18#1, main_#t~ret19#1.base, main_#t~ret19#1.offset, main_~in_len~0#1, main_~in~0#1.base, main_~in~0#1.offset, main_~the_int~0#1;havoc main_#t~nondet14#1;main_~in_len~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;" "assume !(main_~in_len~0#1 < 1);call main_#t~malloc15#1.base, main_#t~malloc15#1.offset := #Ultimate.allocOnStack(main_~in_len~0#1 % 18446744073709551616);main_~in~0#1.base, main_~in~0#1.offset := main_#t~malloc15#1.base, main_#t~malloc15#1.offset;main_~i~0#1 := 0;" [2024-11-24 01:50:39,932 INFO L749 eck$LassoCheckResult]: Loop: "assume main_~i~0#1 < main_~in_len~0#1 - 1;" "havoc main_#t~nondet16#1;call write~int#0(main_#t~nondet16#1, main_~in~0#1.base, main_~in~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet16#1;main_#t~post17#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post17#1;havoc main_#t~post17#1;" [2024-11-24 01:50:39,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:50:39,943 INFO L85 PathProgramCache]: Analyzing trace with hash 29860, now seen corresponding path program 1 times [2024-11-24 01:50:39,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-24 01:50:39,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969631372] [2024-11-24 01:50:39,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:50:39,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:50:40,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:50:40,073 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 01:50:40,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:50:40,116 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-24 01:50:40,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:50:40,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1381, now seen corresponding path program 1 times [2024-11-24 01:50:40,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-24 01:50:40,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376702633] [2024-11-24 01:50:40,120 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:50:40,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:50:40,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:50:40,132 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 01:50:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:50:40,141 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-24 01:50:40,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:50:40,142 INFO L85 PathProgramCache]: Analyzing trace with hash 28695880, now seen corresponding path program 1 times [2024-11-24 01:50:40,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-24 01:50:40,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017245268] [2024-11-24 01:50:40,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:50:40,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:50:40,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:50:40,174 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 01:50:40,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:50:40,212 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-24 01:50:40,598 INFO L204 LassoAnalysis]: Preferences: [2024-11-24 01:50:40,599 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-24 01:50:40,599 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-24 01:50:40,599 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-24 01:50:40,600 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-24 01:50:40,600 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:50:40,600 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-24 01:50:40,600 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-24 01:50:40,600 INFO L132 ssoRankerPreferences]: Filename of dumped script: strrchr.i_Iteration1_Lasso [2024-11-24 01:50:40,601 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-24 01:50:40,601 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-24 01:50:40,620 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:50:40,633 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:50:40,873 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:50:40,877 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:50:40,882 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:50:40,886 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:50:40,890 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:50:40,895 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:50:40,900 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:50:40,904 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:50:41,224 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-24 01:50:41,228 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-24 01:50:41,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:50:41,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:50:41,234 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 01:50:41,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2024-11-24 01:50:41,239 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 [2024-11-24 01:50:41,255 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-24 01:50:41,255 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-24 01:50:41,256 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-24 01:50:41,256 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-24 01:50:41,256 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-24 01:50:41,261 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-24 01:50:41,261 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-24 01:50:41,265 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-24 01:50:41,275 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2024-11-24 01:50:41,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:50:41,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:50:41,278 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 01:50:41,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2024-11-24 01:50:41,283 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 [2024-11-24 01:50:41,298 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-24 01:50:41,299 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-24 01:50:41,299 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-24 01:50:41,299 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-24 01:50:41,308 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-24 01:50:41,308 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-24 01:50:41,317 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-24 01:50:41,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2024-11-24 01:50:41,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:50:41,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:50:41,329 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 01:50:41,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-11-24 01:50:41,333 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 [2024-11-24 01:50:41,348 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-24 01:50:41,348 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-24 01:50:41,348 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-24 01:50:41,348 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-24 01:50:41,349 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-24 01:50:41,349 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-24 01:50:41,349 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-24 01:50:41,351 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-24 01:50:41,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2024-11-24 01:50:41,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:50:41,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:50:41,366 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 01:50:41,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-11-24 01:50:41,369 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 [2024-11-24 01:50:41,383 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-24 01:50:41,383 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-24 01:50:41,383 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-24 01:50:41,383 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-24 01:50:41,386 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-24 01:50:41,386 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-24 01:50:41,391 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-24 01:50:41,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2024-11-24 01:50:41,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:50:41,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:50:41,404 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 01:50:41,408 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 [2024-11-24 01:50:41,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2024-11-24 01:50:41,424 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-24 01:50:41,424 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-24 01:50:41,424 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-24 01:50:41,424 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-24 01:50:41,429 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-24 01:50:41,429 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-24 01:50:41,437 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-24 01:50:41,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2024-11-24 01:50:41,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:50:41,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:50:41,451 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 01:50:41,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-11-24 01:50:41,455 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 [2024-11-24 01:50:41,470 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-24 01:50:41,470 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-24 01:50:41,470 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-24 01:50:41,470 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-24 01:50:41,489 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-24 01:50:41,489 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-24 01:50:41,506 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-24 01:50:41,550 INFO L443 ModelExtractionUtils]: Simplification made 9 calls to the SMT solver. [2024-11-24 01:50:41,552 INFO L444 ModelExtractionUtils]: 5 out of 19 variables were initially zero. Simplification set additionally 11 variables to zero. [2024-11-24 01:50:41,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:50:41,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:50:41,560 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 01:50:41,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-11-24 01:50:41,562 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-24 01:50:41,578 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2024-11-24 01:50:41,579 INFO L474 LassoAnalysis]: Proved termination. [2024-11-24 01:50:41,579 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~in_len~0#1) = -1*ULTIMATE.start_main_~i~0#1 + 1*ULTIMATE.start_main_~in_len~0#1 Supporting invariants [] [2024-11-24 01:50:41,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2024-11-24 01:50:41,611 INFO L156 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2024-11-24 01:50:41,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:50:41,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:50:41,666 INFO L256 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-24 01:50:41,667 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:50:41,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:50:41,686 INFO L256 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 01:50:41,687 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:50:41,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:50:41,747 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2024-11-24 01:50:41,749 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 23 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:50:41,817 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 23 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 46 states and 67 transitions. Complement of second has 6 states. [2024-11-24 01:50:41,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-11-24 01:50:41,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:50:41,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 35 transitions. [2024-11-24 01:50:41,832 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 35 transitions. Stem has 3 letters. Loop has 2 letters. [2024-11-24 01:50:41,833 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-24 01:50:41,833 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 35 transitions. Stem has 5 letters. Loop has 2 letters. [2024-11-24 01:50:41,834 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-24 01:50:41,834 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 35 transitions. Stem has 3 letters. Loop has 4 letters. [2024-11-24 01:50:41,834 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-24 01:50:41,835 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 67 transitions. [2024-11-24 01:50:41,838 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2024-11-24 01:50:41,841 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 20 states and 26 transitions. [2024-11-24 01:50:41,842 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2024-11-24 01:50:41,843 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2024-11-24 01:50:41,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 26 transitions. [2024-11-24 01:50:41,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-24 01:50:41,844 INFO L218 hiAutomatonCegarLoop]: Abstraction has 20 states and 26 transitions. [2024-11-24 01:50:41,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 26 transitions. [2024-11-24 01:50:41,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-24 01:50:41,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 20 states have (on average 1.3) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:50:41,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2024-11-24 01:50:41,872 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 26 transitions. [2024-11-24 01:50:41,872 INFO L425 stractBuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2024-11-24 01:50:41,872 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-24 01:50:41,872 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 26 transitions. [2024-11-24 01:50:41,873 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2024-11-24 01:50:41,873 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-24 01:50:41,873 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-24 01:50:41,875 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2024-11-24 01:50:41,875 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:50:41,875 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~nondet14#1, main_#t~malloc15#1.base, main_#t~malloc15#1.offset, main_#t~nondet16#1, main_#t~post17#1, main_~i~0#1, main_#t~nondet18#1, main_#t~ret19#1.base, main_#t~ret19#1.offset, main_~in_len~0#1, main_~in~0#1.base, main_~in~0#1.offset, main_~the_int~0#1;havoc main_#t~nondet14#1;main_~in_len~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;" "assume !(main_~in_len~0#1 < 1);call main_#t~malloc15#1.base, main_#t~malloc15#1.offset := #Ultimate.allocOnStack(main_~in_len~0#1 % 18446744073709551616);main_~in~0#1.base, main_~in~0#1.offset := main_#t~malloc15#1.base, main_#t~malloc15#1.offset;main_~i~0#1 := 0;" "assume !(main_~i~0#1 < main_~in_len~0#1 - 1);" "havoc main_~i~0#1;call write~int#0(0, main_~in~0#1.base, main_~in~0#1.offset + (main_~in_len~0#1 - 1), 1);havoc main_#t~nondet18#1;main_~the_int~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;assume { :begin_inline_strrchr } true;strrchr_#in~t#1.base, strrchr_#in~t#1.offset, strrchr_#in~c#1 := main_~in~0#1.base, main_~in~0#1.offset, main_~the_int~0#1;havoc strrchr_#res#1.base, strrchr_#res#1.offset;havoc strrchr_#t~mem2#1, strrchr_#t~mem3#1, strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset, strrchr_#t~mem5#1, strrchr_#t~mem6#1, strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset, strrchr_#t~mem8#1, strrchr_#t~mem9#1, strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset, strrchr_#t~mem11#1, strrchr_#t~mem12#1, strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset, strrchr_~t#1.base, strrchr_~t#1.offset, strrchr_~c#1, strrchr_~ch~0#1, strrchr_~l~0#1.base, strrchr_~l~0#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_#in~t#1.base, strrchr_#in~t#1.offset;strrchr_~c#1 := strrchr_#in~c#1;havoc strrchr_~ch~0#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := 0, 0;strrchr_~ch~0#1 := (if strrchr_~c#1 % 256 <= 127 then strrchr_~c#1 % 256 else strrchr_~c#1 % 256 - 256);" [2024-11-24 01:50:41,876 INFO L749 eck$LassoCheckResult]: Loop: "call strrchr_#t~mem2#1 := read~int#0(strrchr_~t#1.base, strrchr_~t#1.offset, 1);" "assume strrchr_#t~mem2#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem2#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset;" "call strrchr_#t~mem3#1 := read~int#0(strrchr_~t#1.base, strrchr_~t#1.offset, 1);" "assume !(0 == strrchr_#t~mem3#1);havoc strrchr_#t~mem3#1;strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset;call strrchr_#t~mem5#1 := read~int#0(strrchr_~t#1.base, strrchr_~t#1.offset, 1);" "assume strrchr_#t~mem5#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem5#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset;" "call strrchr_#t~mem6#1 := read~int#0(strrchr_~t#1.base, strrchr_~t#1.offset, 1);" "assume !(0 == strrchr_#t~mem6#1);havoc strrchr_#t~mem6#1;strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset;call strrchr_#t~mem8#1 := read~int#0(strrchr_~t#1.base, strrchr_~t#1.offset, 1);" "assume strrchr_#t~mem8#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem8#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset;" "call strrchr_#t~mem9#1 := read~int#0(strrchr_~t#1.base, strrchr_~t#1.offset, 1);" "assume !(0 == strrchr_#t~mem9#1);havoc strrchr_#t~mem9#1;strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset;call strrchr_#t~mem11#1 := read~int#0(strrchr_~t#1.base, strrchr_~t#1.offset, 1);" "assume strrchr_#t~mem11#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem11#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset;" "call strrchr_#t~mem12#1 := read~int#0(strrchr_~t#1.base, strrchr_~t#1.offset, 1);" "assume !(0 == strrchr_#t~mem12#1);havoc strrchr_#t~mem12#1;strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset;" [2024-11-24 01:50:41,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:50:41,881 INFO L85 PathProgramCache]: Analyzing trace with hash 28695946, now seen corresponding path program 1 times [2024-11-24 01:50:41,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-24 01:50:41,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497848807] [2024-11-24 01:50:41,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:50:41,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:50:41,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:50:41,908 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 01:50:41,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:50:41,951 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-24 01:50:41,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:50:41,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1890546192, now seen corresponding path program 1 times [2024-11-24 01:50:41,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-24 01:50:41,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501268587] [2024-11-24 01:50:41,953 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:50:41,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:50:41,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:50:41,973 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 01:50:41,984 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2024-11-24 01:50:41,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:50:41,992 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-24 01:50:41,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:50:41,992 INFO L85 PathProgramCache]: Analyzing trace with hash -203842777, now seen corresponding path program 1 times [2024-11-24 01:50:41,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-24 01:50:41,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714729628] [2024-11-24 01:50:41,993 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:50:41,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:50:42,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:50:42,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL_NO_AM found an infeasible trace [2024-11-24 01:50:42,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714729628] [2024-11-24 01:50:42,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714729628] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:50:42,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703244494] [2024-11-24 01:50:42,778 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:50:42,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:50:42,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:50:42,780 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:50:42,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 01:50:42,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:50:42,897 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-24 01:50:42,900 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:50:42,980 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 11 treesize of output 7 [2024-11-24 01:50:43,117 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:50:43,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2024-11-24 01:50:43,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-24 01:50:43,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703244494] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:50:43,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:50:43,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 10] total 19 [2024-11-24 01:50:43,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725192043] [2024-11-24 01:50:43,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:50:43,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2024-11-24 01:50:43,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-24 01:50:43,913 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2024-11-24 01:50:43,915 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. cyclomatic complexity: 8 Second operand has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:50:44,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:50:44,438 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2024-11-24 01:50:44,438 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 33 transitions. [2024-11-24 01:50:44,439 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2024-11-24 01:50:44,439 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 21 states and 26 transitions. [2024-11-24 01:50:44,443 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2024-11-24 01:50:44,444 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2024-11-24 01:50:44,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 26 transitions. [2024-11-24 01:50:44,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-24 01:50:44,444 INFO L218 hiAutomatonCegarLoop]: Abstraction has 21 states and 26 transitions. [2024-11-24 01:50:44,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 26 transitions. [2024-11-24 01:50:44,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2024-11-24 01:50:44,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 20 states have (on average 1.25) internal successors, (25), 19 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:50:44,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2024-11-24 01:50:44,446 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 25 transitions. [2024-11-24 01:50:44,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 01:50:44,448 INFO L425 stractBuchiCegarLoop]: Abstraction has 20 states and 25 transitions. [2024-11-24 01:50:44,449 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-11-24 01:50:44,449 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 25 transitions. [2024-11-24 01:50:44,450 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2024-11-24 01:50:44,450 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-24 01:50:44,450 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-24 01:50:44,451 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:50:44,451 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:50:44,451 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~nondet14#1, main_#t~malloc15#1.base, main_#t~malloc15#1.offset, main_#t~nondet16#1, main_#t~post17#1, main_~i~0#1, main_#t~nondet18#1, main_#t~ret19#1.base, main_#t~ret19#1.offset, main_~in_len~0#1, main_~in~0#1.base, main_~in~0#1.offset, main_~the_int~0#1;havoc main_#t~nondet14#1;main_~in_len~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;" "assume !(main_~in_len~0#1 < 1);call main_#t~malloc15#1.base, main_#t~malloc15#1.offset := #Ultimate.allocOnStack(main_~in_len~0#1 % 18446744073709551616);main_~in~0#1.base, main_~in~0#1.offset := main_#t~malloc15#1.base, main_#t~malloc15#1.offset;main_~i~0#1 := 0;" "assume main_~i~0#1 < main_~in_len~0#1 - 1;" "havoc main_#t~nondet16#1;call write~int#0(main_#t~nondet16#1, main_~in~0#1.base, main_~in~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet16#1;main_#t~post17#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post17#1;havoc main_#t~post17#1;" "assume !(main_~i~0#1 < main_~in_len~0#1 - 1);" "havoc main_~i~0#1;call write~int#0(0, main_~in~0#1.base, main_~in~0#1.offset + (main_~in_len~0#1 - 1), 1);havoc main_#t~nondet18#1;main_~the_int~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;assume { :begin_inline_strrchr } true;strrchr_#in~t#1.base, strrchr_#in~t#1.offset, strrchr_#in~c#1 := main_~in~0#1.base, main_~in~0#1.offset, main_~the_int~0#1;havoc strrchr_#res#1.base, strrchr_#res#1.offset;havoc strrchr_#t~mem2#1, strrchr_#t~mem3#1, strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset, strrchr_#t~mem5#1, strrchr_#t~mem6#1, strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset, strrchr_#t~mem8#1, strrchr_#t~mem9#1, strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset, strrchr_#t~mem11#1, strrchr_#t~mem12#1, strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset, strrchr_~t#1.base, strrchr_~t#1.offset, strrchr_~c#1, strrchr_~ch~0#1, strrchr_~l~0#1.base, strrchr_~l~0#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_#in~t#1.base, strrchr_#in~t#1.offset;strrchr_~c#1 := strrchr_#in~c#1;havoc strrchr_~ch~0#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := 0, 0;strrchr_~ch~0#1 := (if strrchr_~c#1 % 256 <= 127 then strrchr_~c#1 % 256 else strrchr_~c#1 % 256 - 256);" [2024-11-24 01:50:44,453 INFO L749 eck$LassoCheckResult]: Loop: "call strrchr_#t~mem2#1 := read~int#0(strrchr_~t#1.base, strrchr_~t#1.offset, 1);" "assume strrchr_#t~mem2#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem2#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset;" "call strrchr_#t~mem3#1 := read~int#0(strrchr_~t#1.base, strrchr_~t#1.offset, 1);" "assume !(0 == strrchr_#t~mem3#1);havoc strrchr_#t~mem3#1;strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset;call strrchr_#t~mem5#1 := read~int#0(strrchr_~t#1.base, strrchr_~t#1.offset, 1);" "assume strrchr_#t~mem5#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem5#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset;" "call strrchr_#t~mem6#1 := read~int#0(strrchr_~t#1.base, strrchr_~t#1.offset, 1);" "assume !(0 == strrchr_#t~mem6#1);havoc strrchr_#t~mem6#1;strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset;call strrchr_#t~mem8#1 := read~int#0(strrchr_~t#1.base, strrchr_~t#1.offset, 1);" "assume strrchr_#t~mem8#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem8#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset;" "call strrchr_#t~mem9#1 := read~int#0(strrchr_~t#1.base, strrchr_~t#1.offset, 1);" "assume !(0 == strrchr_#t~mem9#1);havoc strrchr_#t~mem9#1;strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset;call strrchr_#t~mem11#1 := read~int#0(strrchr_~t#1.base, strrchr_~t#1.offset, 1);" "assume strrchr_#t~mem11#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem11#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset;" "call strrchr_#t~mem12#1 := read~int#0(strrchr_~t#1.base, strrchr_~t#1.offset, 1);" "assume !(0 == strrchr_#t~mem12#1);havoc strrchr_#t~mem12#1;strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset;" [2024-11-24 01:50:44,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:50:44,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1806937390, now seen corresponding path program 1 times [2024-11-24 01:50:44,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-24 01:50:44,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525804604] [2024-11-24 01:50:44,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:50:44,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:50:44,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:50:44,475 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 01:50:44,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:50:44,495 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-24 01:50:44,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:50:44,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1890546192, now seen corresponding path program 2 times [2024-11-24 01:50:44,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-24 01:50:44,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815911741] [2024-11-24 01:50:44,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:50:44,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:50:44,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:50:44,516 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 01:50:44,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:50:44,533 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-24 01:50:44,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:50:44,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1964594691, now seen corresponding path program 1 times [2024-11-24 01:50:44,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-24 01:50:44,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666008801] [2024-11-24 01:50:44,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:50:44,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:50:44,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:50:45,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL_NO_AM found an infeasible trace [2024-11-24 01:50:45,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666008801] [2024-11-24 01:50:45,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666008801] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:50:45,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614719469] [2024-11-24 01:50:45,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:50:45,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:50:45,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:50:45,120 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:50:45,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 01:50:45,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:50:45,210 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-24 01:50:45,213 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:50:45,301 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 [2024-11-24 01:50:45,528 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:50:45,986 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:50:45,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 98 [2024-11-24 01:50:46,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-24 01:50:46,053 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:50:46,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 53 [2024-11-24 01:50:46,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614719469] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:50:46,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:50:46,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 13] total 29 [2024-11-24 01:50:46,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624518180] [2024-11-24 01:50:46,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:50:46,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2024-11-24 01:50:46,704 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-24 01:50:46,704 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=721, Unknown=0, NotChecked=0, Total=812 [2024-11-24 01:50:46,705 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. cyclomatic complexity: 7 Second operand has 29 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 29 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:50:47,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:50:47,654 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2024-11-24 01:50:47,654 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 41 transitions. [2024-11-24 01:50:47,655 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2024-11-24 01:50:47,656 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 23 states and 28 transitions. [2024-11-24 01:50:47,656 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2024-11-24 01:50:47,656 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2024-11-24 01:50:47,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 28 transitions. [2024-11-24 01:50:47,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-24 01:50:47,657 INFO L218 hiAutomatonCegarLoop]: Abstraction has 23 states and 28 transitions. [2024-11-24 01:50:47,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 28 transitions. [2024-11-24 01:50:47,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2024-11-24 01:50:47,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 21 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:50:47,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2024-11-24 01:50:47,659 INFO L240 hiAutomatonCegarLoop]: Abstraction has 22 states and 27 transitions. [2024-11-24 01:50:47,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-24 01:50:47,660 INFO L425 stractBuchiCegarLoop]: Abstraction has 22 states and 27 transitions. [2024-11-24 01:50:47,660 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-11-24 01:50:47,661 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 27 transitions. [2024-11-24 01:50:47,661 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2024-11-24 01:50:47,661 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-24 01:50:47,661 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-24 01:50:47,662 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2024-11-24 01:50:47,662 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:50:47,662 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~nondet14#1, main_#t~malloc15#1.base, main_#t~malloc15#1.offset, main_#t~nondet16#1, main_#t~post17#1, main_~i~0#1, main_#t~nondet18#1, main_#t~ret19#1.base, main_#t~ret19#1.offset, main_~in_len~0#1, main_~in~0#1.base, main_~in~0#1.offset, main_~the_int~0#1;havoc main_#t~nondet14#1;main_~in_len~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;" "assume !(main_~in_len~0#1 < 1);call main_#t~malloc15#1.base, main_#t~malloc15#1.offset := #Ultimate.allocOnStack(main_~in_len~0#1 % 18446744073709551616);main_~in~0#1.base, main_~in~0#1.offset := main_#t~malloc15#1.base, main_#t~malloc15#1.offset;main_~i~0#1 := 0;" "assume main_~i~0#1 < main_~in_len~0#1 - 1;" "havoc main_#t~nondet16#1;call write~int#0(main_#t~nondet16#1, main_~in~0#1.base, main_~in~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet16#1;main_#t~post17#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post17#1;havoc main_#t~post17#1;" "assume main_~i~0#1 < main_~in_len~0#1 - 1;" "havoc main_#t~nondet16#1;call write~int#0(main_#t~nondet16#1, main_~in~0#1.base, main_~in~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet16#1;main_#t~post17#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post17#1;havoc main_#t~post17#1;" "assume !(main_~i~0#1 < main_~in_len~0#1 - 1);" "havoc main_~i~0#1;call write~int#0(0, main_~in~0#1.base, main_~in~0#1.offset + (main_~in_len~0#1 - 1), 1);havoc main_#t~nondet18#1;main_~the_int~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;assume { :begin_inline_strrchr } true;strrchr_#in~t#1.base, strrchr_#in~t#1.offset, strrchr_#in~c#1 := main_~in~0#1.base, main_~in~0#1.offset, main_~the_int~0#1;havoc strrchr_#res#1.base, strrchr_#res#1.offset;havoc strrchr_#t~mem2#1, strrchr_#t~mem3#1, strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset, strrchr_#t~mem5#1, strrchr_#t~mem6#1, strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset, strrchr_#t~mem8#1, strrchr_#t~mem9#1, strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset, strrchr_#t~mem11#1, strrchr_#t~mem12#1, strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset, strrchr_~t#1.base, strrchr_~t#1.offset, strrchr_~c#1, strrchr_~ch~0#1, strrchr_~l~0#1.base, strrchr_~l~0#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_#in~t#1.base, strrchr_#in~t#1.offset;strrchr_~c#1 := strrchr_#in~c#1;havoc strrchr_~ch~0#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := 0, 0;strrchr_~ch~0#1 := (if strrchr_~c#1 % 256 <= 127 then strrchr_~c#1 % 256 else strrchr_~c#1 % 256 - 256);" [2024-11-24 01:50:47,662 INFO L749 eck$LassoCheckResult]: Loop: "call strrchr_#t~mem2#1 := read~int#0(strrchr_~t#1.base, strrchr_~t#1.offset, 1);" "assume strrchr_#t~mem2#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem2#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset;" "call strrchr_#t~mem3#1 := read~int#0(strrchr_~t#1.base, strrchr_~t#1.offset, 1);" "assume !(0 == strrchr_#t~mem3#1);havoc strrchr_#t~mem3#1;strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset;call strrchr_#t~mem5#1 := read~int#0(strrchr_~t#1.base, strrchr_~t#1.offset, 1);" "assume strrchr_#t~mem5#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem5#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset;" "call strrchr_#t~mem6#1 := read~int#0(strrchr_~t#1.base, strrchr_~t#1.offset, 1);" "assume !(0 == strrchr_#t~mem6#1);havoc strrchr_#t~mem6#1;strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset;call strrchr_#t~mem8#1 := read~int#0(strrchr_~t#1.base, strrchr_~t#1.offset, 1);" "assume strrchr_#t~mem8#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem8#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset;" "call strrchr_#t~mem9#1 := read~int#0(strrchr_~t#1.base, strrchr_~t#1.offset, 1);" "assume !(0 == strrchr_#t~mem9#1);havoc strrchr_#t~mem9#1;strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset;call strrchr_#t~mem11#1 := read~int#0(strrchr_~t#1.base, strrchr_~t#1.offset, 1);" "assume strrchr_#t~mem11#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem11#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset;" "call strrchr_#t~mem12#1 := read~int#0(strrchr_~t#1.base, strrchr_~t#1.offset, 1);" "assume !(0 == strrchr_#t~mem12#1);havoc strrchr_#t~mem12#1;strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset;" [2024-11-24 01:50:47,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:50:47,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1299981266, now seen corresponding path program 2 times [2024-11-24 01:50:47,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-24 01:50:47,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824689607] [2024-11-24 01:50:47,663 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:50:47,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:50:47,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:50:47,679 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 01:50:47,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:50:47,690 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-24 01:50:47,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:50:47,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1890546192, now seen corresponding path program 3 times [2024-11-24 01:50:47,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-24 01:50:47,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087166886] [2024-11-24 01:50:47,690 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:50:47,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:50:47,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:50:47,700 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 01:50:47,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:50:47,708 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-24 01:50:47,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:50:47,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1521104417, now seen corresponding path program 2 times [2024-11-24 01:50:47,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-24 01:50:47,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197064742] [2024-11-24 01:50:47,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:50:47,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:50:47,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:50:48,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL_NO_AM found an infeasible trace [2024-11-24 01:50:48,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197064742] [2024-11-24 01:50:48,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197064742] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:50:48,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330381685] [2024-11-24 01:50:48,317 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:50:48,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:50:48,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:50:48,322 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:50:48,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-24 01:50:48,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:50:48,421 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-24 01:50:48,424 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:50:48,552 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 [2024-11-24 01:50:48,879 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:50:49,474 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:50:49,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 98 [2024-11-24 01:50:49,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-24 01:50:49,545 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:50:49,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 53 [2024-11-24 01:50:49,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330381685] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:50:49,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:50:49,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 15] total 34 [2024-11-24 01:50:49,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029889426] [2024-11-24 01:50:49,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:50:50,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2024-11-24 01:50:50,261 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-24 01:50:50,262 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1020, Unknown=0, NotChecked=0, Total=1122 [2024-11-24 01:50:50,262 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. cyclomatic complexity: 7 Second operand has 34 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 34 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:50:51,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:50:51,403 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2024-11-24 01:50:51,403 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 52 transitions. [2024-11-24 01:50:51,404 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2024-11-24 01:50:51,405 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 25 states and 30 transitions. [2024-11-24 01:50:51,405 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2024-11-24 01:50:51,405 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2024-11-24 01:50:51,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 30 transitions. [2024-11-24 01:50:51,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-24 01:50:51,406 INFO L218 hiAutomatonCegarLoop]: Abstraction has 25 states and 30 transitions. [2024-11-24 01:50:51,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 30 transitions. [2024-11-24 01:50:51,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2024-11-24 01:50:51,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 23 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:50:51,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2024-11-24 01:50:51,408 INFO L240 hiAutomatonCegarLoop]: Abstraction has 24 states and 29 transitions. [2024-11-24 01:50:51,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-24 01:50:51,409 INFO L425 stractBuchiCegarLoop]: Abstraction has 24 states and 29 transitions. [2024-11-24 01:50:51,410 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-11-24 01:50:51,410 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 29 transitions. [2024-11-24 01:50:51,410 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2024-11-24 01:50:51,410 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-24 01:50:51,410 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-24 01:50:51,411 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 3, 1, 1, 1, 1, 1] [2024-11-24 01:50:51,411 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:50:51,411 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~nondet14#1, main_#t~malloc15#1.base, main_#t~malloc15#1.offset, main_#t~nondet16#1, main_#t~post17#1, main_~i~0#1, main_#t~nondet18#1, main_#t~ret19#1.base, main_#t~ret19#1.offset, main_~in_len~0#1, main_~in~0#1.base, main_~in~0#1.offset, main_~the_int~0#1;havoc main_#t~nondet14#1;main_~in_len~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;" "assume !(main_~in_len~0#1 < 1);call main_#t~malloc15#1.base, main_#t~malloc15#1.offset := #Ultimate.allocOnStack(main_~in_len~0#1 % 18446744073709551616);main_~in~0#1.base, main_~in~0#1.offset := main_#t~malloc15#1.base, main_#t~malloc15#1.offset;main_~i~0#1 := 0;" "assume main_~i~0#1 < main_~in_len~0#1 - 1;" "havoc main_#t~nondet16#1;call write~int#0(main_#t~nondet16#1, main_~in~0#1.base, main_~in~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet16#1;main_#t~post17#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post17#1;havoc main_#t~post17#1;" "assume main_~i~0#1 < main_~in_len~0#1 - 1;" "havoc main_#t~nondet16#1;call write~int#0(main_#t~nondet16#1, main_~in~0#1.base, main_~in~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet16#1;main_#t~post17#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post17#1;havoc main_#t~post17#1;" "assume main_~i~0#1 < main_~in_len~0#1 - 1;" "havoc main_#t~nondet16#1;call write~int#0(main_#t~nondet16#1, main_~in~0#1.base, main_~in~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet16#1;main_#t~post17#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post17#1;havoc main_#t~post17#1;" "assume !(main_~i~0#1 < main_~in_len~0#1 - 1);" "havoc main_~i~0#1;call write~int#0(0, main_~in~0#1.base, main_~in~0#1.offset + (main_~in_len~0#1 - 1), 1);havoc main_#t~nondet18#1;main_~the_int~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;assume { :begin_inline_strrchr } true;strrchr_#in~t#1.base, strrchr_#in~t#1.offset, strrchr_#in~c#1 := main_~in~0#1.base, main_~in~0#1.offset, main_~the_int~0#1;havoc strrchr_#res#1.base, strrchr_#res#1.offset;havoc strrchr_#t~mem2#1, strrchr_#t~mem3#1, strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset, strrchr_#t~mem5#1, strrchr_#t~mem6#1, strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset, strrchr_#t~mem8#1, strrchr_#t~mem9#1, strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset, strrchr_#t~mem11#1, strrchr_#t~mem12#1, strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset, strrchr_~t#1.base, strrchr_~t#1.offset, strrchr_~c#1, strrchr_~ch~0#1, strrchr_~l~0#1.base, strrchr_~l~0#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_#in~t#1.base, strrchr_#in~t#1.offset;strrchr_~c#1 := strrchr_#in~c#1;havoc strrchr_~ch~0#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := 0, 0;strrchr_~ch~0#1 := (if strrchr_~c#1 % 256 <= 127 then strrchr_~c#1 % 256 else strrchr_~c#1 % 256 - 256);" [2024-11-24 01:50:51,411 INFO L749 eck$LassoCheckResult]: Loop: "call strrchr_#t~mem2#1 := read~int#0(strrchr_~t#1.base, strrchr_~t#1.offset, 1);" "assume strrchr_#t~mem2#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem2#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset;" "call strrchr_#t~mem3#1 := read~int#0(strrchr_~t#1.base, strrchr_~t#1.offset, 1);" "assume !(0 == strrchr_#t~mem3#1);havoc strrchr_#t~mem3#1;strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset;call strrchr_#t~mem5#1 := read~int#0(strrchr_~t#1.base, strrchr_~t#1.offset, 1);" "assume strrchr_#t~mem5#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem5#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset;" "call strrchr_#t~mem6#1 := read~int#0(strrchr_~t#1.base, strrchr_~t#1.offset, 1);" "assume !(0 == strrchr_#t~mem6#1);havoc strrchr_#t~mem6#1;strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset;call strrchr_#t~mem8#1 := read~int#0(strrchr_~t#1.base, strrchr_~t#1.offset, 1);" "assume strrchr_#t~mem8#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem8#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset;" "call strrchr_#t~mem9#1 := read~int#0(strrchr_~t#1.base, strrchr_~t#1.offset, 1);" "assume !(0 == strrchr_#t~mem9#1);havoc strrchr_#t~mem9#1;strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset;call strrchr_#t~mem11#1 := read~int#0(strrchr_~t#1.base, strrchr_~t#1.offset, 1);" "assume strrchr_#t~mem11#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem11#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset;" "call strrchr_#t~mem12#1 := read~int#0(strrchr_~t#1.base, strrchr_~t#1.offset, 1);" "assume !(0 == strrchr_#t~mem12#1);havoc strrchr_#t~mem12#1;strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset;" [2024-11-24 01:50:51,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:50:51,412 INFO L85 PathProgramCache]: Analyzing trace with hash -553549450, now seen corresponding path program 3 times [2024-11-24 01:50:51,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-24 01:50:51,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100664275] [2024-11-24 01:50:51,412 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:50:51,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:50:51,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:50:51,425 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 01:50:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:50:51,435 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-24 01:50:51,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:50:51,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1890546192, now seen corresponding path program 4 times [2024-11-24 01:50:51,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-24 01:50:51,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897098715] [2024-11-24 01:50:51,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:50:51,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:50:51,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:50:51,444 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 01:50:51,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:50:51,454 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-24 01:50:51,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:50:51,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1203456325, now seen corresponding path program 3 times [2024-11-24 01:50:51,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-24 01:50:51,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312477879] [2024-11-24 01:50:51,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:50:51,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:50:51,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:50:52,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL_NO_AM found an infeasible trace [2024-11-24 01:50:52,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312477879] [2024-11-24 01:50:52,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312477879] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:50:52,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884866907] [2024-11-24 01:50:52,284 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:50:52,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:50:52,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:50:52,289 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:50:52,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-24 01:50:52,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:50:52,396 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-24 01:50:52,399 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:50:52,567 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 [2024-11-24 01:50:53,004 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:50:53,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2024-11-24 01:50:53,243 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:50:53,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 53 [2024-11-24 01:50:53,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884866907] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:50:53,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:50:53,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 38 [2024-11-24 01:50:53,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925580108] [2024-11-24 01:50:53,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:50:53,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2024-11-24 01:50:53,919 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-24 01:50:53,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1268, Unknown=0, NotChecked=0, Total=1406 [2024-11-24 01:50:53,920 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. cyclomatic complexity: 7 Second operand has 38 states, 38 states have (on average 1.5) internal successors, (57), 38 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:50:54,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:50:54,619 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2024-11-24 01:50:54,619 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 52 transitions. [2024-11-24 01:50:54,620 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2024-11-24 01:50:54,622 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 43 states and 52 transitions. [2024-11-24 01:50:54,622 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2024-11-24 01:50:54,622 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2024-11-24 01:50:54,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 52 transitions. [2024-11-24 01:50:54,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-24 01:50:54,623 INFO L218 hiAutomatonCegarLoop]: Abstraction has 43 states and 52 transitions. [2024-11-24 01:50:54,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states and 52 transitions. [2024-11-24 01:50:54,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2024-11-24 01:50:54,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 38 states have (on average 1.236842105263158) internal successors, (47), 37 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:50:54,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2024-11-24 01:50:54,629 INFO L240 hiAutomatonCegarLoop]: Abstraction has 38 states and 47 transitions. [2024-11-24 01:50:54,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-24 01:50:54,632 INFO L425 stractBuchiCegarLoop]: Abstraction has 38 states and 47 transitions. [2024-11-24 01:50:54,633 INFO L332 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2024-11-24 01:50:54,634 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 38 states and 47 transitions. [2024-11-24 01:50:54,634 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2024-11-24 01:50:54,634 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-24 01:50:54,634 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-24 01:50:54,635 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 4, 1, 1, 1, 1, 1] [2024-11-24 01:50:54,635 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:50:54,635 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~nondet14#1, main_#t~malloc15#1.base, main_#t~malloc15#1.offset, main_#t~nondet16#1, main_#t~post17#1, main_~i~0#1, main_#t~nondet18#1, main_#t~ret19#1.base, main_#t~ret19#1.offset, main_~in_len~0#1, main_~in~0#1.base, main_~in~0#1.offset, main_~the_int~0#1;havoc main_#t~nondet14#1;main_~in_len~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;" "assume !(main_~in_len~0#1 < 1);call main_#t~malloc15#1.base, main_#t~malloc15#1.offset := #Ultimate.allocOnStack(main_~in_len~0#1 % 18446744073709551616);main_~in~0#1.base, main_~in~0#1.offset := main_#t~malloc15#1.base, main_#t~malloc15#1.offset;main_~i~0#1 := 0;" "assume main_~i~0#1 < main_~in_len~0#1 - 1;" "havoc main_#t~nondet16#1;call write~int#0(main_#t~nondet16#1, main_~in~0#1.base, main_~in~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet16#1;main_#t~post17#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post17#1;havoc main_#t~post17#1;" "assume main_~i~0#1 < main_~in_len~0#1 - 1;" "havoc main_#t~nondet16#1;call write~int#0(main_#t~nondet16#1, main_~in~0#1.base, main_~in~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet16#1;main_#t~post17#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post17#1;havoc main_#t~post17#1;" "assume main_~i~0#1 < main_~in_len~0#1 - 1;" "havoc main_#t~nondet16#1;call write~int#0(main_#t~nondet16#1, main_~in~0#1.base, main_~in~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet16#1;main_#t~post17#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post17#1;havoc main_#t~post17#1;" "assume main_~i~0#1 < main_~in_len~0#1 - 1;" "havoc main_#t~nondet16#1;call write~int#0(main_#t~nondet16#1, main_~in~0#1.base, main_~in~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet16#1;main_#t~post17#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post17#1;havoc main_#t~post17#1;" "assume !(main_~i~0#1 < main_~in_len~0#1 - 1);" "havoc main_~i~0#1;call write~int#0(0, main_~in~0#1.base, main_~in~0#1.offset + (main_~in_len~0#1 - 1), 1);havoc main_#t~nondet18#1;main_~the_int~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;assume { :begin_inline_strrchr } true;strrchr_#in~t#1.base, strrchr_#in~t#1.offset, strrchr_#in~c#1 := main_~in~0#1.base, main_~in~0#1.offset, main_~the_int~0#1;havoc strrchr_#res#1.base, strrchr_#res#1.offset;havoc strrchr_#t~mem2#1, strrchr_#t~mem3#1, strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset, strrchr_#t~mem5#1, strrchr_#t~mem6#1, strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset, strrchr_#t~mem8#1, strrchr_#t~mem9#1, strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset, strrchr_#t~mem11#1, strrchr_#t~mem12#1, strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset, strrchr_~t#1.base, strrchr_~t#1.offset, strrchr_~c#1, strrchr_~ch~0#1, strrchr_~l~0#1.base, strrchr_~l~0#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_#in~t#1.base, strrchr_#in~t#1.offset;strrchr_~c#1 := strrchr_#in~c#1;havoc strrchr_~ch~0#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := 0, 0;strrchr_~ch~0#1 := (if strrchr_~c#1 % 256 <= 127 then strrchr_~c#1 % 256 else strrchr_~c#1 % 256 - 256);" [2024-11-24 01:50:54,635 INFO L749 eck$LassoCheckResult]: Loop: "call strrchr_#t~mem2#1 := read~int#0(strrchr_~t#1.base, strrchr_~t#1.offset, 1);" "assume strrchr_#t~mem2#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem2#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset;" "call strrchr_#t~mem3#1 := read~int#0(strrchr_~t#1.base, strrchr_~t#1.offset, 1);" "assume !(0 == strrchr_#t~mem3#1);havoc strrchr_#t~mem3#1;strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset;call strrchr_#t~mem5#1 := read~int#0(strrchr_~t#1.base, strrchr_~t#1.offset, 1);" "assume strrchr_#t~mem5#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem5#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset;" "call strrchr_#t~mem6#1 := read~int#0(strrchr_~t#1.base, strrchr_~t#1.offset, 1);" "assume !(0 == strrchr_#t~mem6#1);havoc strrchr_#t~mem6#1;strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset;call strrchr_#t~mem8#1 := read~int#0(strrchr_~t#1.base, strrchr_~t#1.offset, 1);" "assume strrchr_#t~mem8#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem8#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset;" "call strrchr_#t~mem9#1 := read~int#0(strrchr_~t#1.base, strrchr_~t#1.offset, 1);" "assume !(0 == strrchr_#t~mem9#1);havoc strrchr_#t~mem9#1;strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset;call strrchr_#t~mem11#1 := read~int#0(strrchr_~t#1.base, strrchr_~t#1.offset, 1);" "assume strrchr_#t~mem11#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem11#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset;" "call strrchr_#t~mem12#1 := read~int#0(strrchr_~t#1.base, strrchr_~t#1.offset, 1);" "assume !(0 == strrchr_#t~mem12#1);havoc strrchr_#t~mem12#1;strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset;" [2024-11-24 01:50:54,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:50:54,636 INFO L85 PathProgramCache]: Analyzing trace with hash 614860314, now seen corresponding path program 4 times [2024-11-24 01:50:54,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-24 01:50:54,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823956437] [2024-11-24 01:50:54,636 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:50:54,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:50:54,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:50:54,659 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 01:50:54,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:50:54,678 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-24 01:50:54,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:50:54,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1890546192, now seen corresponding path program 5 times [2024-11-24 01:50:54,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-24 01:50:54,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330769999] [2024-11-24 01:50:54,678 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:50:54,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:50:54,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:50:54,690 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 01:50:54,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:50:54,698 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-24 01:50:54,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:50:54,702 INFO L85 PathProgramCache]: Analyzing trace with hash -886317929, now seen corresponding path program 4 times [2024-11-24 01:50:54,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-24 01:50:54,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723987883] [2024-11-24 01:50:54,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:50:54,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:50:54,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:50:54,735 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 01:50:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:50:54,761 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-24 01:50:56,124 INFO L204 LassoAnalysis]: Preferences: [2024-11-24 01:50:56,125 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-24 01:50:56,125 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-24 01:50:56,125 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-24 01:50:56,125 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-24 01:50:56,125 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:50:56,125 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-24 01:50:56,125 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-24 01:50:56,125 INFO L132 ssoRankerPreferences]: Filename of dumped script: strrchr.i_Iteration6_Lasso [2024-11-24 01:50:56,125 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-24 01:50:56,125 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-24 01:50:56,129 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:50:56,132 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:50:56,135 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:50:56,660 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:50:56,663 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:50:56,666 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:50:56,669 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:50:56,673 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:50:56,676 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:50:56,678 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:50:56,680 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:50:56,682 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:50:56,687 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:50:56,690 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:50:56,695 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:50:56,698 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:50:56,701 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:50:56,703 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:50:56,707 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:50:56,709 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:50:56,712 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:50:56,715 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:50:56,717 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:50:56,720 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:50:56,723 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:50:56,726 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:50:56,729 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:50:56,733 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:50:56,736 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:50:56,739 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:50:56,741 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:50:56,743 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:50:57,140 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-24 01:50:57,140 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-24 01:50:57,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:50:57,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:50:57,144 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 01:50:57,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-11-24 01:50:57,146 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 [2024-11-24 01:50:57,159 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-24 01:50:57,159 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-24 01:50:57,160 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-24 01:50:57,160 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-24 01:50:57,160 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-24 01:50:57,160 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-24 01:50:57,161 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-24 01:50:57,162 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-24 01:50:57,169 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2024-11-24 01:50:57,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:50:57,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:50:57,171 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 01:50:57,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-11-24 01:50:57,175 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 [2024-11-24 01:50:57,189 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-24 01:50:57,189 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-24 01:50:57,190 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-24 01:50:57,190 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-24 01:50:57,190 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-24 01:50:57,190 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-24 01:50:57,190 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-24 01:50:57,192 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-24 01:50:57,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2024-11-24 01:50:57,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:50:57,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:50:57,206 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 01:50:57,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2024-11-24 01:50:57,209 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 [2024-11-24 01:50:57,223 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-24 01:50:57,223 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-24 01:50:57,223 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-24 01:50:57,223 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-24 01:50:57,223 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-24 01:50:57,224 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-24 01:50:57,224 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-24 01:50:57,239 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-24 01:50:57,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2024-11-24 01:50:57,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:50:57,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:50:57,248 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 01:50:57,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2024-11-24 01:50:57,251 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 [2024-11-24 01:50:57,265 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-24 01:50:57,265 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-24 01:50:57,265 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-24 01:50:57,265 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-24 01:50:57,265 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-24 01:50:57,266 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-24 01:50:57,266 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-24 01:50:57,267 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-24 01:50:57,274 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2024-11-24 01:50:57,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:50:57,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:50:57,277 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 01:50:57,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2024-11-24 01:50:57,280 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 [2024-11-24 01:50:57,293 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-24 01:50:57,293 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-24 01:50:57,293 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-24 01:50:57,294 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-24 01:50:57,294 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-24 01:50:57,294 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-24 01:50:57,294 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-24 01:50:57,296 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-24 01:50:57,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2024-11-24 01:50:57,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:50:57,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:50:57,306 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 01:50:57,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2024-11-24 01:50:57,309 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 [2024-11-24 01:50:57,323 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-24 01:50:57,323 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-24 01:50:57,323 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-24 01:50:57,323 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-24 01:50:57,326 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-24 01:50:57,326 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-24 01:50:57,330 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-24 01:50:57,337 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2024-11-24 01:50:57,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:50:57,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:50:57,340 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 01:50:57,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2024-11-24 01:50:57,342 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 [2024-11-24 01:50:57,357 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-24 01:50:57,357 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-24 01:50:57,357 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-24 01:50:57,357 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-24 01:50:57,360 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-24 01:50:57,360 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-24 01:50:57,365 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-24 01:50:57,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2024-11-24 01:50:57,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:50:57,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:50:57,378 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 01:50:57,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2024-11-24 01:50:57,381 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 [2024-11-24 01:50:57,396 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-24 01:50:57,396 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-24 01:50:57,396 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2024-11-24 01:50:57,396 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-24 01:50:57,418 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2024-11-24 01:50:57,418 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2024-11-24 01:50:57,450 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-24 01:50:57,458 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2024-11-24 01:50:57,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:50:57,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:50:57,460 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 01:50:57,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2024-11-24 01:50:57,463 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 [2024-11-24 01:50:57,476 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-24 01:50:57,476 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-24 01:50:57,476 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-24 01:50:57,476 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-24 01:50:57,478 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-24 01:50:57,478 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-24 01:50:57,482 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-24 01:50:57,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2024-11-24 01:50:57,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:50:57,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:50:57,492 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 01:50:57,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2024-11-24 01:50:57,495 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 [2024-11-24 01:50:57,508 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-24 01:50:57,508 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-24 01:50:57,508 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-24 01:50:57,508 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-24 01:50:57,515 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-24 01:50:57,515 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-24 01:50:57,527 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-24 01:50:57,542 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2024-11-24 01:50:57,542 INFO L444 ModelExtractionUtils]: 4 out of 16 variables were initially zero. Simplification set additionally 9 variables to zero. [2024-11-24 01:50:57,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:50:57,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:50:57,544 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 01:50:57,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2024-11-24 01:50:57,547 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-24 01:50:57,560 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2024-11-24 01:50:57,560 INFO L474 LassoAnalysis]: Proved termination. [2024-11-24 01:50:57,560 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_strrchr_~t#1.offset, v_rep(select #length ULTIMATE.start_main_#t~malloc15#1.base)_2) = -1*ULTIMATE.start_strrchr_~t#1.offset + 1*v_rep(select #length ULTIMATE.start_main_#t~malloc15#1.base)_2 Supporting invariants [] [2024-11-24 01:50:57,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2024-11-24 01:50:57,606 INFO L156 tatePredicateManager]: 10 out of 11 supporting invariants were superfluous and have been removed [2024-11-24 01:50:57,610 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~t!offset [2024-11-24 01:50:57,611 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-11-24 01:50:57,611 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#length,GLOBAL] [2024-11-24 01:50:57,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:50:57,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:50:57,674 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-24 01:50:57,675 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:50:57,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:50:57,762 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-24 01:50:57,763 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:50:57,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:50:57,957 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 4 loop predicates [2024-11-24 01:50:57,957 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 38 states and 47 transitions. cyclomatic complexity: 11 Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:50:58,030 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 38 states and 47 transitions. cyclomatic complexity: 11. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 57 states and 76 transitions. Complement of second has 5 states. [2024-11-24 01:50:58,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2024-11-24 01:50:58,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:50:58,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2024-11-24 01:50:58,032 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 13 letters. Loop has 13 letters. [2024-11-24 01:50:58,032 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-24 01:50:58,032 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 26 letters. Loop has 13 letters. [2024-11-24 01:50:58,033 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-24 01:50:58,033 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 13 letters. Loop has 26 letters. [2024-11-24 01:50:58,034 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-24 01:50:58,034 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 57 states and 76 transitions. [2024-11-24 01:50:58,036 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-24 01:50:58,036 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 57 states to 0 states and 0 transitions. [2024-11-24 01:50:58,036 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-11-24 01:50:58,036 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-11-24 01:50:58,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-11-24 01:50:58,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-24 01:50:58,037 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-24 01:50:58,037 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-24 01:50:58,037 INFO L425 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-24 01:50:58,037 INFO L332 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2024-11-24 01:50:58,037 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-11-24 01:50:58,037 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-24 01:50:58,037 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-11-24 01:50:58,051 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 24.11 01:50:58 BoogieIcfgContainer [2024-11-24 01:50:58,052 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-24 01:50:58,053 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-24 01:50:58,053 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-24 01:50:58,053 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-24 01:50:58,054 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:50:39" (3/4) ... [2024-11-24 01:50:58,056 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-24 01:50:58,057 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-24 01:50:58,058 INFO L158 Benchmark]: Toolchain (without parser) took 19438.71ms. Allocated memory was 117.4MB in the beginning and 176.2MB in the end (delta: 58.7MB). Free memory was 91.4MB in the beginning and 90.9MB in the end (delta: 494.7kB). Peak memory consumption was 62.1MB. Max. memory is 16.1GB. [2024-11-24 01:50:58,058 INFO L158 Benchmark]: CDTParser took 0.51ms. Allocated memory is still 83.9MB. Free memory is still 39.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:50:58,058 INFO L158 Benchmark]: CACSL2BoogieTranslator took 525.93ms. Allocated memory is still 117.4MB. Free memory was 91.4MB in the beginning and 74.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-24 01:50:58,059 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.58ms. Allocated memory is still 117.4MB. Free memory was 74.6MB in the beginning and 72.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:50:58,059 INFO L158 Benchmark]: Boogie Preprocessor took 69.18ms. Allocated memory is still 117.4MB. Free memory was 72.9MB in the beginning and 71.1MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:50:58,059 INFO L158 Benchmark]: RCFGBuilder took 529.91ms. Allocated memory is still 117.4MB. Free memory was 71.1MB in the beginning and 58.1MB in the end (delta: 13.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-24 01:50:58,060 INFO L158 Benchmark]: BuchiAutomizer took 18262.61ms. Allocated memory was 117.4MB in the beginning and 176.2MB in the end (delta: 58.7MB). Free memory was 57.8MB in the beginning and 90.9MB in the end (delta: -33.1MB). Peak memory consumption was 28.6MB. Max. memory is 16.1GB. [2024-11-24 01:50:58,060 INFO L158 Benchmark]: Witness Printer took 3.88ms. Allocated memory is still 176.2MB. Free memory was 90.9MB in the beginning and 90.9MB in the end (delta: 22.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:50:58,062 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51ms. Allocated memory is still 83.9MB. Free memory is still 39.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 525.93ms. Allocated memory is still 117.4MB. Free memory was 91.4MB in the beginning and 74.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.58ms. Allocated memory is still 117.4MB. Free memory was 74.6MB in the beginning and 72.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 69.18ms. Allocated memory is still 117.4MB. Free memory was 72.9MB in the beginning and 71.1MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 529.91ms. Allocated memory is still 117.4MB. Free memory was 71.1MB in the beginning and 58.1MB in the end (delta: 13.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * BuchiAutomizer took 18262.61ms. Allocated memory was 117.4MB in the beginning and 176.2MB in the end (delta: 58.7MB). Free memory was 57.8MB in the beginning and 90.9MB in the end (delta: -33.1MB). Peak memory consumption was 28.6MB. Max. memory is 16.1GB. * Witness Printer took 3.88ms. Allocated memory is still 176.2MB. Free memory was 90.9MB in the beginning and 90.9MB in the end (delta: 22.1kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~t!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#length,GLOBAL] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (4 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function (((long) -1 * i) + in_len) and consists of 4 locations. One deterministic module has affine ranking function null and consists of 4 locations. 4 modules have a trivial ranking function, the largest among these consists of 38 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 18.1s and 7 iterations. TraceHistogramMax:4. Analysis of lassos took 14.0s. Construction of modules took 1.5s. Büchi inclusion checks took 2.4s. Highest rank in rank-based complementation 3. Minimization of det autom 6. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 8 StatesRemovedByMinimization, 4 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 [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 111 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 110 mSDsluCounter, 458 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 403 mSDsCounter, 50 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1773 IncrementalHoareTripleChecker+Invalid, 1823 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 50 mSolverCounterUnsat, 55 mSDtfsCounter, 1773 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc4 concLT0 SILN0 SILU0 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital133 mio100 ax100 hnf100 lsp104 ukn73 mio100 lsp42 div138 bol100 ite100 ukn100 eq170 hnf91 smp85 dnf127 smp100 tf100 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 73ms VariablesStem: 3 VariablesLoop: 7 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2024-11-24 01:50:58,083 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2024-11-24 01:50:58,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-24 01:50:58,479 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-24 01:50:58,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-24 01:50:58,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-24 01:50:59,080 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fe45be-742b-410d-8498-fef49cafb86e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE