./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/list-ext2-properties/list_and_tree_cnstr-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b86ddb2-21b5-4f6d-8793-86e73f199c3a/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b86ddb2-21b5-4f6d-8793-86e73f199c3a/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b86ddb2-21b5-4f6d-8793-86e73f199c3a/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b86ddb2-21b5-4f6d-8793-86e73f199c3a/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/list-ext2-properties/list_and_tree_cnstr-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b86ddb2-21b5-4f6d-8793-86e73f199c3a/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b86ddb2-21b5-4f6d-8793-86e73f199c3a/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2971ec3e9ef2eef1d2151174358645d6ce0c6d4fe66ae89c00ded0f196979d8a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 19:51:38,652 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 19:51:38,721 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b86ddb2-21b5-4f6d-8793-86e73f199c3a/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Termination-32bit-Automizer_Default.epf [2024-11-27 19:51:38,726 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 19:51:38,727 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 19:51:38,751 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 19:51:38,752 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 19:51:38,752 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 19:51:38,753 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 19:51:38,753 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 19:51:38,753 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 19:51:38,753 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 19:51:38,754 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 19:51:38,754 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-27 19:51:38,754 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-27 19:51:38,754 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-27 19:51:38,754 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-27 19:51:38,754 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-27 19:51:38,755 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-27 19:51:38,755 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 19:51:38,755 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-27 19:51:38,755 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 19:51:38,755 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 19:51:38,755 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 19:51:38,755 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 19:51:38,756 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-27 19:51:38,756 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-27 19:51:38,756 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-27 19:51:38,756 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 19:51:38,756 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 19:51:38,756 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 19:51:38,756 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-27 19:51:38,757 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 19:51:38,757 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 19:51:38,757 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 19:51:38,757 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 19:51:38,757 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 19:51:38,758 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL_NO_AM [2024-11-27 19:51:38,758 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-27 19:51:38,758 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_1b86ddb2-21b5-4f6d-8793-86e73f199c3a/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2971ec3e9ef2eef1d2151174358645d6ce0c6d4fe66ae89c00ded0f196979d8a [2024-11-27 19:51:39,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 19:51:39,048 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 19:51:39,050 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 19:51:39,051 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 19:51:39,052 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 19:51:39,053 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b86ddb2-21b5-4f6d-8793-86e73f199c3a/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/list-ext2-properties/list_and_tree_cnstr-1.i [2024-11-27 19:51:41,927 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b86ddb2-21b5-4f6d-8793-86e73f199c3a/bin/uautomizer-verify-aQ6SnzHsRB/data/052211b93/c2f41a842cd94be2849af4a2c68b76ad/FLAG982fdea76 [2024-11-27 19:51:42,304 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 19:51:42,305 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b86ddb2-21b5-4f6d-8793-86e73f199c3a/sv-benchmarks/c/list-ext2-properties/list_and_tree_cnstr-1.i [2024-11-27 19:51:42,322 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b86ddb2-21b5-4f6d-8793-86e73f199c3a/bin/uautomizer-verify-aQ6SnzHsRB/data/052211b93/c2f41a842cd94be2849af4a2c68b76ad/FLAG982fdea76 [2024-11-27 19:51:42,343 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b86ddb2-21b5-4f6d-8793-86e73f199c3a/bin/uautomizer-verify-aQ6SnzHsRB/data/052211b93/c2f41a842cd94be2849af4a2c68b76ad [2024-11-27 19:51:42,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 19:51:42,348 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 19:51:42,350 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 19:51:42,351 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 19:51:42,356 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 19:51:42,357 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 07:51:42" (1/1) ... [2024-11-27 19:51:42,359 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a25488e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:51:42, skipping insertion in model container [2024-11-27 19:51:42,360 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 07:51:42" (1/1) ... [2024-11-27 19:51:42,401 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 19:51:42,808 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 19:51:42,824 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 19:51:42,886 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 19:51:42,919 INFO L204 MainTranslator]: Completed translation [2024-11-27 19:51:42,919 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:51:42 WrapperNode [2024-11-27 19:51:42,919 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 19:51:42,920 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 19:51:42,920 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 19:51:42,920 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 19:51:42,927 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:51:42" (1/1) ... [2024-11-27 19:51:42,940 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:51:42" (1/1) ... [2024-11-27 19:51:42,977 INFO L138 Inliner]: procedures = 122, calls = 55, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 201 [2024-11-27 19:51:42,978 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 19:51:42,978 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 19:51:42,978 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 19:51:42,979 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 19:51:42,989 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:51:42" (1/1) ... [2024-11-27 19:51:42,990 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:51:42" (1/1) ... [2024-11-27 19:51:42,995 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:51:42" (1/1) ... [2024-11-27 19:51:43,030 INFO L175 MemorySlicer]: Split 40 memory accesses to 3 slices as follows [2, 12, 26]. 65 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 15 writes are split as follows [0, 5, 10]. [2024-11-27 19:51:43,030 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:51:42" (1/1) ... [2024-11-27 19:51:43,031 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:51:42" (1/1) ... [2024-11-27 19:51:43,050 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:51:42" (1/1) ... [2024-11-27 19:51:43,051 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:51:42" (1/1) ... [2024-11-27 19:51:43,056 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:51:42" (1/1) ... [2024-11-27 19:51:43,058 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:51:42" (1/1) ... [2024-11-27 19:51:43,059 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:51:42" (1/1) ... [2024-11-27 19:51:43,062 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 19:51:43,063 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 19:51:43,063 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 19:51:43,063 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 19:51:43,064 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:51:42" (1/1) ... [2024-11-27 19:51:43,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-27 19:51:43,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b86ddb2-21b5-4f6d-8793-86e73f199c3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:51:43,105 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b86ddb2-21b5-4f6d-8793-86e73f199c3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-27 19:51:43,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b86ddb2-21b5-4f6d-8793-86e73f199c3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-11-27 19:51:43,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-27 19:51:43,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-27 19:51:43,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-27 19:51:43,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-27 19:51:43,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-27 19:51:43,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-27 19:51:43,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-27 19:51:43,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 19:51:43,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-27 19:51:43,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-27 19:51:43,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-27 19:51:43,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-27 19:51:43,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-27 19:51:43,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-27 19:51:43,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-27 19:51:43,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 19:51:43,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 19:51:43,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-27 19:51:43,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 19:51:43,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 19:51:43,301 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 19:51:43,303 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 19:51:43,831 INFO L? ?]: Removed 63 outVars from TransFormulas that were not future-live. [2024-11-27 19:51:43,831 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 19:51:43,840 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 19:51:43,841 INFO L312 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-27 19:51:43,841 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 07:51:43 BoogieIcfgContainer [2024-11-27 19:51:43,841 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 19:51:43,842 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-27 19:51:43,842 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-27 19:51:43,848 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-27 19:51:43,849 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-27 19:51:43,850 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.11 07:51:42" (1/3) ... [2024-11-27 19:51:43,851 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@aabd5c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.11 07:51:43, skipping insertion in model container [2024-11-27 19:51:43,851 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-27 19:51:43,851 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:51:42" (2/3) ... [2024-11-27 19:51:43,851 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@aabd5c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.11 07:51:43, skipping insertion in model container [2024-11-27 19:51:43,852 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-27 19:51:43,852 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 07:51:43" (3/3) ... [2024-11-27 19:51:43,853 INFO L363 chiAutomizerObserver]: Analyzing ICFG list_and_tree_cnstr-1.i [2024-11-27 19:51:43,901 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-27 19:51:43,901 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-27 19:51:43,902 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-27 19:51:43,902 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-27 19:51:43,902 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-27 19:51:43,902 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-27 19:51:43,902 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-27 19:51:43,902 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-27 19:51:43,908 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 59 states, 58 states have (on average 1.5344827586206897) internal successors, (89), 58 states have internal predecessors, (89), 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) [2024-11-27 19:51:43,930 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 43 [2024-11-27 19:51:43,931 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-27 19:51:43,931 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-27 19:51:43,938 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-27 19:51:43,938 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:43,938 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-27 19:51:43,938 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 59 states, 58 states have (on average 1.5344827586206897) internal successors, (89), 58 states have internal predecessors, (89), 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) [2024-11-27 19:51:43,943 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 43 [2024-11-27 19:51:43,944 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-27 19:51:43,944 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-27 19:51:43,945 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-27 19:51:43,945 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:43,952 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(24, 2);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~nondet4#1, main_#t~mem5#1.base, main_#t~mem5#1.offset, main_#t~mem6#1.base, main_#t~mem6#1.offset, main_#t~short7#1, main_#t~nondet8#1, main_#t~mem9#1.base, main_#t~mem9#1.offset, main_#t~mem10#1.base, main_#t~mem10#1.offset, main_#t~mem11#1.base, main_#t~mem11#1.offset, main_#t~nondet12#1, main_#t~short13#1, main_#t~malloc14#1.base, main_#t~malloc14#1.offset, main_#t~mem15#1.base, main_#t~mem15#1.offset, main_#t~mem16#1.base, main_#t~mem16#1.offset, main_#t~mem17#1.base, main_#t~mem17#1.offset, main_#t~nondet18#1, main_#t~short19#1, main_#t~malloc20#1.base, main_#t~malloc20#1.offset, main_#t~mem21#1.base, main_#t~mem21#1.offset, main_#t~mem22#1.base, main_#t~mem22#1.offset, main_#t~mem23#1.base, main_#t~mem23#1.offset, main_#t~mem24#1.base, main_#t~mem24#1.offset, main_#t~short25#1, main_#t~mem26#1.base, main_#t~mem26#1.offset, main_#t~mem27#1.base, main_#t~mem27#1.offset, main_#t~mem28#1.base, main_#t~mem28#1.offset, main_#t~mem29#1.base, main_#t~mem29#1.offset, main_#t~malloc30#1.base, main_#t~malloc30#1.offset, main_#t~nondet31#1, main_#t~malloc32#1.base, main_#t~malloc32#1.offset, main_#t~mem33#1.base, main_#t~mem33#1.offset, main_#t~nondet34#1, main_#t~malloc35#1.base, main_#t~malloc35#1.offset, main_#t~mem36#1.base, main_#t~mem36#1.offset, main_#t~mem37#1, main_#t~mem38#1.base, main_#t~mem38#1.offset, main_#t~mem39#1, main_#t~mem40#1.base, main_#t~mem40#1.offset, main_#t~mem41#1, main_~root~0#1.base, main_~root~0#1.offset, main_~n~0#1.base, main_~n~0#1.offset, main_~pred~0#1.base, main_~pred~0#1.offset, main_~a~0#1.base, main_~a~0#1.offset, main_~t~0#1.base, main_~t~0#1.offset, main_~p~0#1.base, main_~p~0#1.offset;call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnHeap(8);main_~root~0#1.base, main_~root~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset;havoc main_#t~malloc3#1.base, main_#t~malloc3#1.offset;havoc main_~n~0#1.base, main_~n~0#1.offset;call write~$Pointer$#2(0, 0, main_~root~0#1.base, main_~root~0#1.offset, 4);call write~$Pointer$#2(0, 0, main_~root~0#1.base, 4 + main_~root~0#1.offset, 4);" [2024-11-27 19:51:43,953 INFO L749 eck$LassoCheckResult]: Loop: "havoc main_#t~nondet4#1;" "assume 0 != main_#t~nondet4#1;havoc main_#t~nondet4#1;" "main_~n~0#1.base, main_~n~0#1.offset := main_~root~0#1.base, main_~root~0#1.offset;" "assume !true;" "call main_#t~mem11#1.base, main_#t~mem11#1.offset := read~$Pointer$#2(main_~n~0#1.base, main_~n~0#1.offset, 4);main_#t~short13#1 := main_#t~mem11#1.base == 0 && main_#t~mem11#1.offset == 0;" "assume main_#t~short13#1;havoc main_#t~nondet12#1;main_#t~short13#1 := 0 != main_#t~nondet12#1;" "assume main_#t~short13#1;havoc main_#t~mem11#1.base, main_#t~mem11#1.offset;havoc main_#t~nondet12#1;havoc main_#t~short13#1;call main_#t~malloc14#1.base, main_#t~malloc14#1.offset := #Ultimate.allocOnHeap(8);call write~$Pointer$#2(main_#t~malloc14#1.base, main_#t~malloc14#1.offset, main_~n~0#1.base, main_~n~0#1.offset, 4);havoc main_#t~malloc14#1.base, main_#t~malloc14#1.offset;call main_#t~mem15#1.base, main_#t~mem15#1.offset := read~$Pointer$#2(main_~n~0#1.base, main_~n~0#1.offset, 4);call write~$Pointer$#2(0, 0, main_#t~mem15#1.base, main_#t~mem15#1.offset, 4);havoc main_#t~mem15#1.base, main_#t~mem15#1.offset;call main_#t~mem16#1.base, main_#t~mem16#1.offset := read~$Pointer$#2(main_~n~0#1.base, main_~n~0#1.offset, 4);call write~$Pointer$#2(0, 0, main_#t~mem16#1.base, 4 + main_#t~mem16#1.offset, 4);havoc main_#t~mem16#1.base, main_#t~mem16#1.offset;" "call main_#t~mem17#1.base, main_#t~mem17#1.offset := read~$Pointer$#2(main_~n~0#1.base, 4 + main_~n~0#1.offset, 4);main_#t~short19#1 := main_#t~mem17#1.base == 0 && main_#t~mem17#1.offset == 0;" "assume main_#t~short19#1;havoc main_#t~nondet18#1;main_#t~short19#1 := 0 != main_#t~nondet18#1;" "assume !main_#t~short19#1;havoc main_#t~mem17#1.base, main_#t~mem17#1.offset;havoc main_#t~nondet18#1;havoc main_#t~short19#1;" [2024-11-27 19:51:43,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:43,958 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-11-27 19:51:43,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 19:51:43,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016819755] [2024-11-27 19:51:43,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:43,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:44,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 19:51:44,109 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 19:51:44,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 19:51:44,159 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-27 19:51:44,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:44,162 INFO L85 PathProgramCache]: Analyzing trace with hash -329764052, now seen corresponding path program 1 times [2024-11-27 19:51:44,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 19:51:44,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301147745] [2024-11-27 19:51:44,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:44,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:44,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:44,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL_NO_AM found an infeasible trace [2024-11-27 19:51:44,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301147745] [2024-11-27 19:51:44,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301147745] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:51:44,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249178919] [2024-11-27 19:51:44,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:44,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:51:44,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b86ddb2-21b5-4f6d-8793-86e73f199c3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:51:44,267 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b86ddb2-21b5-4f6d-8793-86e73f199c3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:51:44,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b86ddb2-21b5-4f6d-8793-86e73f199c3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 19:51:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:44,421 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-27 19:51:44,422 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:51:44,428 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:51:44,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249178919] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:51:44,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:51:44,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-27 19:51:44,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397901973] [2024-11-27 19:51:44,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:51:44,440 INFO L764 eck$LassoCheckResult]: loop already infeasible [2024-11-27 19:51:44,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2024-11-27 19:51:44,469 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 19:51:44,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 19:51:44,471 INFO L87 Difference]: Start difference. First operand has 59 states, 58 states have (on average 1.5344827586206897) internal successors, (89), 58 states have internal predecessors, (89), 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 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:44,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:44,481 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2024-11-27 19:51:44,482 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 58 states and 78 transitions. [2024-11-27 19:51:44,484 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 43 [2024-11-27 19:51:44,490 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 58 states to 50 states and 70 transitions. [2024-11-27 19:51:44,491 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 50 [2024-11-27 19:51:44,491 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 50 [2024-11-27 19:51:44,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 70 transitions. [2024-11-27 19:51:44,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-27 19:51:44,492 INFO L218 hiAutomatonCegarLoop]: Abstraction has 50 states and 70 transitions. [2024-11-27 19:51:44,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states and 70 transitions. [2024-11-27 19:51:44,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-27 19:51:44,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 50 states have (on average 1.4) internal successors, (70), 49 states have internal predecessors, (70), 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) [2024-11-27 19:51:44,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2024-11-27 19:51:44,517 INFO L240 hiAutomatonCegarLoop]: Abstraction has 50 states and 70 transitions. [2024-11-27 19:51:44,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 19:51:44,520 INFO L425 stractBuchiCegarLoop]: Abstraction has 50 states and 70 transitions. [2024-11-27 19:51:44,521 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-27 19:51:44,521 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 50 states and 70 transitions. [2024-11-27 19:51:44,522 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 43 [2024-11-27 19:51:44,522 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-27 19:51:44,522 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-27 19:51:44,523 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-27 19:51:44,523 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:44,523 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(24, 2);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~nondet4#1, main_#t~mem5#1.base, main_#t~mem5#1.offset, main_#t~mem6#1.base, main_#t~mem6#1.offset, main_#t~short7#1, main_#t~nondet8#1, main_#t~mem9#1.base, main_#t~mem9#1.offset, main_#t~mem10#1.base, main_#t~mem10#1.offset, main_#t~mem11#1.base, main_#t~mem11#1.offset, main_#t~nondet12#1, main_#t~short13#1, main_#t~malloc14#1.base, main_#t~malloc14#1.offset, main_#t~mem15#1.base, main_#t~mem15#1.offset, main_#t~mem16#1.base, main_#t~mem16#1.offset, main_#t~mem17#1.base, main_#t~mem17#1.offset, main_#t~nondet18#1, main_#t~short19#1, main_#t~malloc20#1.base, main_#t~malloc20#1.offset, main_#t~mem21#1.base, main_#t~mem21#1.offset, main_#t~mem22#1.base, main_#t~mem22#1.offset, main_#t~mem23#1.base, main_#t~mem23#1.offset, main_#t~mem24#1.base, main_#t~mem24#1.offset, main_#t~short25#1, main_#t~mem26#1.base, main_#t~mem26#1.offset, main_#t~mem27#1.base, main_#t~mem27#1.offset, main_#t~mem28#1.base, main_#t~mem28#1.offset, main_#t~mem29#1.base, main_#t~mem29#1.offset, main_#t~malloc30#1.base, main_#t~malloc30#1.offset, main_#t~nondet31#1, main_#t~malloc32#1.base, main_#t~malloc32#1.offset, main_#t~mem33#1.base, main_#t~mem33#1.offset, main_#t~nondet34#1, main_#t~malloc35#1.base, main_#t~malloc35#1.offset, main_#t~mem36#1.base, main_#t~mem36#1.offset, main_#t~mem37#1, main_#t~mem38#1.base, main_#t~mem38#1.offset, main_#t~mem39#1, main_#t~mem40#1.base, main_#t~mem40#1.offset, main_#t~mem41#1, main_~root~0#1.base, main_~root~0#1.offset, main_~n~0#1.base, main_~n~0#1.offset, main_~pred~0#1.base, main_~pred~0#1.offset, main_~a~0#1.base, main_~a~0#1.offset, main_~t~0#1.base, main_~t~0#1.offset, main_~p~0#1.base, main_~p~0#1.offset;call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnHeap(8);main_~root~0#1.base, main_~root~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset;havoc main_#t~malloc3#1.base, main_#t~malloc3#1.offset;havoc main_~n~0#1.base, main_~n~0#1.offset;call write~$Pointer$#2(0, 0, main_~root~0#1.base, main_~root~0#1.offset, 4);call write~$Pointer$#2(0, 0, main_~root~0#1.base, 4 + main_~root~0#1.offset, 4);" [2024-11-27 19:51:44,523 INFO L749 eck$LassoCheckResult]: Loop: "havoc main_#t~nondet4#1;" "assume 0 != main_#t~nondet4#1;havoc main_#t~nondet4#1;" "main_~n~0#1.base, main_~n~0#1.offset := main_~root~0#1.base, main_~root~0#1.offset;" "call main_#t~mem5#1.base, main_#t~mem5#1.offset := read~$Pointer$#2(main_~n~0#1.base, main_~n~0#1.offset, 4);main_#t~short7#1 := main_#t~mem5#1.base != 0 || main_#t~mem5#1.offset != 0;" "assume main_#t~short7#1;call main_#t~mem6#1.base, main_#t~mem6#1.offset := read~$Pointer$#2(main_~n~0#1.base, 4 + main_~n~0#1.offset, 4);main_#t~short7#1 := main_#t~mem6#1.base != 0 || main_#t~mem6#1.offset != 0;" "assume !main_#t~short7#1;havoc main_#t~mem5#1.base, main_#t~mem5#1.offset;havoc main_#t~mem6#1.base, main_#t~mem6#1.offset;havoc main_#t~short7#1;" "call main_#t~mem11#1.base, main_#t~mem11#1.offset := read~$Pointer$#2(main_~n~0#1.base, main_~n~0#1.offset, 4);main_#t~short13#1 := main_#t~mem11#1.base == 0 && main_#t~mem11#1.offset == 0;" "assume main_#t~short13#1;havoc main_#t~nondet12#1;main_#t~short13#1 := 0 != main_#t~nondet12#1;" "assume main_#t~short13#1;havoc main_#t~mem11#1.base, main_#t~mem11#1.offset;havoc main_#t~nondet12#1;havoc main_#t~short13#1;call main_#t~malloc14#1.base, main_#t~malloc14#1.offset := #Ultimate.allocOnHeap(8);call write~$Pointer$#2(main_#t~malloc14#1.base, main_#t~malloc14#1.offset, main_~n~0#1.base, main_~n~0#1.offset, 4);havoc main_#t~malloc14#1.base, main_#t~malloc14#1.offset;call main_#t~mem15#1.base, main_#t~mem15#1.offset := read~$Pointer$#2(main_~n~0#1.base, main_~n~0#1.offset, 4);call write~$Pointer$#2(0, 0, main_#t~mem15#1.base, main_#t~mem15#1.offset, 4);havoc main_#t~mem15#1.base, main_#t~mem15#1.offset;call main_#t~mem16#1.base, main_#t~mem16#1.offset := read~$Pointer$#2(main_~n~0#1.base, main_~n~0#1.offset, 4);call write~$Pointer$#2(0, 0, main_#t~mem16#1.base, 4 + main_#t~mem16#1.offset, 4);havoc main_#t~mem16#1.base, main_#t~mem16#1.offset;" "call main_#t~mem17#1.base, main_#t~mem17#1.offset := read~$Pointer$#2(main_~n~0#1.base, 4 + main_~n~0#1.offset, 4);main_#t~short19#1 := main_#t~mem17#1.base == 0 && main_#t~mem17#1.offset == 0;" "assume main_#t~short19#1;havoc main_#t~nondet18#1;main_#t~short19#1 := 0 != main_#t~nondet18#1;" "assume !main_#t~short19#1;havoc main_#t~mem17#1.base, main_#t~mem17#1.offset;havoc main_#t~nondet18#1;havoc main_#t~short19#1;" [2024-11-27 19:51:44,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:44,524 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2024-11-27 19:51:44,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 19:51:44,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879676075] [2024-11-27 19:51:44,524 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:44,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:44,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 19:51:44,541 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 19:51:44,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 19:51:44,554 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-27 19:51:44,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:44,555 INFO L85 PathProgramCache]: Analyzing trace with hash -965072545, now seen corresponding path program 1 times [2024-11-27 19:51:44,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 19:51:44,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97473910] [2024-11-27 19:51:44,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:44,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:44,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:44,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL_NO_AM found an infeasible trace [2024-11-27 19:51:44,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97473910] [2024-11-27 19:51:44,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97473910] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:51:44,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208179322] [2024-11-27 19:51:44,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:44,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:51:44,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b86ddb2-21b5-4f6d-8793-86e73f199c3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:51:44,928 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b86ddb2-21b5-4f6d-8793-86e73f199c3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:51:44,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b86ddb2-21b5-4f6d-8793-86e73f199c3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 19:51:45,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:45,066 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-27 19:51:45,070 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:51:45,263 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 36 treesize of output 28 [2024-11-27 19:51:45,267 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 28 treesize of output 20 [2024-11-27 19:51:45,287 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:51:45,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208179322] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:51:45,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:51:45,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2024-11-27 19:51:45,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274868830] [2024-11-27 19:51:45,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:51:45,337 INFO L764 eck$LassoCheckResult]: loop already infeasible [2024-11-27 19:51:45,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2024-11-27 19:51:45,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:51:45,338 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 19:51:45,338 INFO L87 Difference]: Start difference. First operand 50 states and 70 transitions. cyclomatic complexity: 29 Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:45,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:45,605 INFO L93 Difference]: Finished difference Result 87 states and 118 transitions. [2024-11-27 19:51:45,605 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 87 states and 118 transitions. [2024-11-27 19:51:45,607 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 73 [2024-11-27 19:51:45,611 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 87 states to 87 states and 118 transitions. [2024-11-27 19:51:45,612 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 87 [2024-11-27 19:51:45,613 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 87 [2024-11-27 19:51:45,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 118 transitions. [2024-11-27 19:51:45,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-27 19:51:45,615 INFO L218 hiAutomatonCegarLoop]: Abstraction has 87 states and 118 transitions. [2024-11-27 19:51:45,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states and 118 transitions. [2024-11-27 19:51:45,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 54. [2024-11-27 19:51:45,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 54 states have (on average 1.3888888888888888) internal successors, (75), 53 states have internal predecessors, (75), 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) [2024-11-27 19:51:45,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 75 transitions. [2024-11-27 19:51:45,623 INFO L240 hiAutomatonCegarLoop]: Abstraction has 54 states and 75 transitions. [2024-11-27 19:51:45,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 19:51:45,624 INFO L425 stractBuchiCegarLoop]: Abstraction has 54 states and 75 transitions. [2024-11-27 19:51:45,625 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-11-27 19:51:45,625 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 75 transitions. [2024-11-27 19:51:45,627 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 47 [2024-11-27 19:51:45,627 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-27 19:51:45,627 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-27 19:51:45,627 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-27 19:51:45,628 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:45,628 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(24, 2);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~nondet4#1, main_#t~mem5#1.base, main_#t~mem5#1.offset, main_#t~mem6#1.base, main_#t~mem6#1.offset, main_#t~short7#1, main_#t~nondet8#1, main_#t~mem9#1.base, main_#t~mem9#1.offset, main_#t~mem10#1.base, main_#t~mem10#1.offset, main_#t~mem11#1.base, main_#t~mem11#1.offset, main_#t~nondet12#1, main_#t~short13#1, main_#t~malloc14#1.base, main_#t~malloc14#1.offset, main_#t~mem15#1.base, main_#t~mem15#1.offset, main_#t~mem16#1.base, main_#t~mem16#1.offset, main_#t~mem17#1.base, main_#t~mem17#1.offset, main_#t~nondet18#1, main_#t~short19#1, main_#t~malloc20#1.base, main_#t~malloc20#1.offset, main_#t~mem21#1.base, main_#t~mem21#1.offset, main_#t~mem22#1.base, main_#t~mem22#1.offset, main_#t~mem23#1.base, main_#t~mem23#1.offset, main_#t~mem24#1.base, main_#t~mem24#1.offset, main_#t~short25#1, main_#t~mem26#1.base, main_#t~mem26#1.offset, main_#t~mem27#1.base, main_#t~mem27#1.offset, main_#t~mem28#1.base, main_#t~mem28#1.offset, main_#t~mem29#1.base, main_#t~mem29#1.offset, main_#t~malloc30#1.base, main_#t~malloc30#1.offset, main_#t~nondet31#1, main_#t~malloc32#1.base, main_#t~malloc32#1.offset, main_#t~mem33#1.base, main_#t~mem33#1.offset, main_#t~nondet34#1, main_#t~malloc35#1.base, main_#t~malloc35#1.offset, main_#t~mem36#1.base, main_#t~mem36#1.offset, main_#t~mem37#1, main_#t~mem38#1.base, main_#t~mem38#1.offset, main_#t~mem39#1, main_#t~mem40#1.base, main_#t~mem40#1.offset, main_#t~mem41#1, main_~root~0#1.base, main_~root~0#1.offset, main_~n~0#1.base, main_~n~0#1.offset, main_~pred~0#1.base, main_~pred~0#1.offset, main_~a~0#1.base, main_~a~0#1.offset, main_~t~0#1.base, main_~t~0#1.offset, main_~p~0#1.base, main_~p~0#1.offset;call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnHeap(8);main_~root~0#1.base, main_~root~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset;havoc main_#t~malloc3#1.base, main_#t~malloc3#1.offset;havoc main_~n~0#1.base, main_~n~0#1.offset;call write~$Pointer$#2(0, 0, main_~root~0#1.base, main_~root~0#1.offset, 4);call write~$Pointer$#2(0, 0, main_~root~0#1.base, 4 + main_~root~0#1.offset, 4);" [2024-11-27 19:51:45,628 INFO L749 eck$LassoCheckResult]: Loop: "havoc main_#t~nondet4#1;" "assume 0 != main_#t~nondet4#1;havoc main_#t~nondet4#1;" "main_~n~0#1.base, main_~n~0#1.offset := main_~root~0#1.base, main_~root~0#1.offset;" "call main_#t~mem5#1.base, main_#t~mem5#1.offset := read~$Pointer$#2(main_~n~0#1.base, main_~n~0#1.offset, 4);main_#t~short7#1 := main_#t~mem5#1.base != 0 || main_#t~mem5#1.offset != 0;" "assume main_#t~short7#1;call main_#t~mem6#1.base, main_#t~mem6#1.offset := read~$Pointer$#2(main_~n~0#1.base, 4 + main_~n~0#1.offset, 4);main_#t~short7#1 := main_#t~mem6#1.base != 0 || main_#t~mem6#1.offset != 0;" "assume !main_#t~short7#1;havoc main_#t~mem5#1.base, main_#t~mem5#1.offset;havoc main_#t~mem6#1.base, main_#t~mem6#1.offset;havoc main_#t~short7#1;" "call main_#t~mem11#1.base, main_#t~mem11#1.offset := read~$Pointer$#2(main_~n~0#1.base, main_~n~0#1.offset, 4);main_#t~short13#1 := main_#t~mem11#1.base == 0 && main_#t~mem11#1.offset == 0;" "assume !main_#t~short13#1;" "assume !main_#t~short13#1;havoc main_#t~mem11#1.base, main_#t~mem11#1.offset;havoc main_#t~nondet12#1;havoc main_#t~short13#1;" "call main_#t~mem17#1.base, main_#t~mem17#1.offset := read~$Pointer$#2(main_~n~0#1.base, 4 + main_~n~0#1.offset, 4);main_#t~short19#1 := main_#t~mem17#1.base == 0 && main_#t~mem17#1.offset == 0;" "assume main_#t~short19#1;havoc main_#t~nondet18#1;main_#t~short19#1 := 0 != main_#t~nondet18#1;" "assume !main_#t~short19#1;havoc main_#t~mem17#1.base, main_#t~mem17#1.offset;havoc main_#t~nondet18#1;havoc main_#t~short19#1;" [2024-11-27 19:51:45,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:45,628 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2024-11-27 19:51:45,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 19:51:45,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040360417] [2024-11-27 19:51:45,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:45,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 19:51:45,655 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 19:51:45,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 19:51:45,670 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-27 19:51:45,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:45,671 INFO L85 PathProgramCache]: Analyzing trace with hash -963165921, now seen corresponding path program 1 times [2024-11-27 19:51:45,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 19:51:45,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317034764] [2024-11-27 19:51:45,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:45,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:45,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 19:51:45,681 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 19:51:45,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 19:51:45,705 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-27 19:51:45,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:45,706 INFO L85 PathProgramCache]: Analyzing trace with hash 250982881, now seen corresponding path program 1 times [2024-11-27 19:51:45,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 19:51:45,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676392197] [2024-11-27 19:51:45,706 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:45,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:45,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:45,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL_NO_AM found an infeasible trace [2024-11-27 19:51:45,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676392197] [2024-11-27 19:51:45,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676392197] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:51:45,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976405987] [2024-11-27 19:51:45,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:45,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:51:45,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b86ddb2-21b5-4f6d-8793-86e73f199c3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:51:45,995 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b86ddb2-21b5-4f6d-8793-86e73f199c3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:51:45,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b86ddb2-21b5-4f6d-8793-86e73f199c3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 19:51:46,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:46,111 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-27 19:51:46,115 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:51:46,133 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 16 treesize of output 17 [2024-11-27 19:51:46,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2024-11-27 19:51:46,325 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:51:46,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976405987] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:51:46,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:51:46,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-27 19:51:46,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731509944] [2024-11-27 19:51:46,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:51:46,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2024-11-27 19:51:46,740 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 19:51:46,740 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-27 19:51:46,741 INFO L87 Difference]: Start difference. First operand 54 states and 75 transitions. cyclomatic complexity: 30 Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 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) [2024-11-27 19:51:47,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:47,209 INFO L93 Difference]: Finished difference Result 115 states and 159 transitions. [2024-11-27 19:51:47,210 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 115 states and 159 transitions. [2024-11-27 19:51:47,212 INFO L131 ngComponentsAnalysis]: Automaton has 18 accepting balls. 96 [2024-11-27 19:51:47,213 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 115 states to 115 states and 159 transitions. [2024-11-27 19:51:47,213 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 115 [2024-11-27 19:51:47,214 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 115 [2024-11-27 19:51:47,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 115 states and 159 transitions. [2024-11-27 19:51:47,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-27 19:51:47,214 INFO L218 hiAutomatonCegarLoop]: Abstraction has 115 states and 159 transitions. [2024-11-27 19:51:47,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states and 159 transitions. [2024-11-27 19:51:47,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 67. [2024-11-27 19:51:47,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 67 states have (on average 1.373134328358209) internal successors, (92), 66 states have internal predecessors, (92), 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) [2024-11-27 19:51:47,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 92 transitions. [2024-11-27 19:51:47,219 INFO L240 hiAutomatonCegarLoop]: Abstraction has 67 states and 92 transitions. [2024-11-27 19:51:47,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:51:47,220 INFO L425 stractBuchiCegarLoop]: Abstraction has 67 states and 92 transitions. [2024-11-27 19:51:47,220 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-11-27 19:51:47,220 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 67 states and 92 transitions. [2024-11-27 19:51:47,221 INFO L131 ngComponentsAnalysis]: Automaton has 10 accepting balls. 60 [2024-11-27 19:51:47,222 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-27 19:51:47,222 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-27 19:51:47,222 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-27 19:51:47,222 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:47,222 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(24, 2);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~nondet4#1, main_#t~mem5#1.base, main_#t~mem5#1.offset, main_#t~mem6#1.base, main_#t~mem6#1.offset, main_#t~short7#1, main_#t~nondet8#1, main_#t~mem9#1.base, main_#t~mem9#1.offset, main_#t~mem10#1.base, main_#t~mem10#1.offset, main_#t~mem11#1.base, main_#t~mem11#1.offset, main_#t~nondet12#1, main_#t~short13#1, main_#t~malloc14#1.base, main_#t~malloc14#1.offset, main_#t~mem15#1.base, main_#t~mem15#1.offset, main_#t~mem16#1.base, main_#t~mem16#1.offset, main_#t~mem17#1.base, main_#t~mem17#1.offset, main_#t~nondet18#1, main_#t~short19#1, main_#t~malloc20#1.base, main_#t~malloc20#1.offset, main_#t~mem21#1.base, main_#t~mem21#1.offset, main_#t~mem22#1.base, main_#t~mem22#1.offset, main_#t~mem23#1.base, main_#t~mem23#1.offset, main_#t~mem24#1.base, main_#t~mem24#1.offset, main_#t~short25#1, main_#t~mem26#1.base, main_#t~mem26#1.offset, main_#t~mem27#1.base, main_#t~mem27#1.offset, main_#t~mem28#1.base, main_#t~mem28#1.offset, main_#t~mem29#1.base, main_#t~mem29#1.offset, main_#t~malloc30#1.base, main_#t~malloc30#1.offset, main_#t~nondet31#1, main_#t~malloc32#1.base, main_#t~malloc32#1.offset, main_#t~mem33#1.base, main_#t~mem33#1.offset, main_#t~nondet34#1, main_#t~malloc35#1.base, main_#t~malloc35#1.offset, main_#t~mem36#1.base, main_#t~mem36#1.offset, main_#t~mem37#1, main_#t~mem38#1.base, main_#t~mem38#1.offset, main_#t~mem39#1, main_#t~mem40#1.base, main_#t~mem40#1.offset, main_#t~mem41#1, main_~root~0#1.base, main_~root~0#1.offset, main_~n~0#1.base, main_~n~0#1.offset, main_~pred~0#1.base, main_~pred~0#1.offset, main_~a~0#1.base, main_~a~0#1.offset, main_~t~0#1.base, main_~t~0#1.offset, main_~p~0#1.base, main_~p~0#1.offset;call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnHeap(8);main_~root~0#1.base, main_~root~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset;havoc main_#t~malloc3#1.base, main_#t~malloc3#1.offset;havoc main_~n~0#1.base, main_~n~0#1.offset;call write~$Pointer$#2(0, 0, main_~root~0#1.base, main_~root~0#1.offset, 4);call write~$Pointer$#2(0, 0, main_~root~0#1.base, 4 + main_~root~0#1.offset, 4);" [2024-11-27 19:51:47,222 INFO L749 eck$LassoCheckResult]: Loop: "havoc main_#t~nondet4#1;" "assume 0 != main_#t~nondet4#1;havoc main_#t~nondet4#1;" "main_~n~0#1.base, main_~n~0#1.offset := main_~root~0#1.base, main_~root~0#1.offset;" "call main_#t~mem5#1.base, main_#t~mem5#1.offset := read~$Pointer$#2(main_~n~0#1.base, main_~n~0#1.offset, 4);main_#t~short7#1 := main_#t~mem5#1.base != 0 || main_#t~mem5#1.offset != 0;" "assume !main_#t~short7#1;" "assume !main_#t~short7#1;havoc main_#t~mem5#1.base, main_#t~mem5#1.offset;havoc main_#t~mem6#1.base, main_#t~mem6#1.offset;havoc main_#t~short7#1;" "call main_#t~mem11#1.base, main_#t~mem11#1.offset := read~$Pointer$#2(main_~n~0#1.base, main_~n~0#1.offset, 4);main_#t~short13#1 := main_#t~mem11#1.base == 0 && main_#t~mem11#1.offset == 0;" "assume main_#t~short13#1;havoc main_#t~nondet12#1;main_#t~short13#1 := 0 != main_#t~nondet12#1;" "assume !main_#t~short13#1;havoc main_#t~mem11#1.base, main_#t~mem11#1.offset;havoc main_#t~nondet12#1;havoc main_#t~short13#1;" "call main_#t~mem17#1.base, main_#t~mem17#1.offset := read~$Pointer$#2(main_~n~0#1.base, 4 + main_~n~0#1.offset, 4);main_#t~short19#1 := main_#t~mem17#1.base == 0 && main_#t~mem17#1.offset == 0;" "assume main_#t~short19#1;havoc main_#t~nondet18#1;main_#t~short19#1 := 0 != main_#t~nondet18#1;" "assume !main_#t~short19#1;havoc main_#t~mem17#1.base, main_#t~mem17#1.offset;havoc main_#t~nondet18#1;havoc main_#t~short19#1;" [2024-11-27 19:51:47,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:47,223 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2024-11-27 19:51:47,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 19:51:47,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718284525] [2024-11-27 19:51:47,223 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:47,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:47,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 19:51:47,236 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 19:51:47,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 19:51:47,245 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-27 19:51:47,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:47,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1774359589, now seen corresponding path program 1 times [2024-11-27 19:51:47,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 19:51:47,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153710765] [2024-11-27 19:51:47,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:47,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:47,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 19:51:47,256 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 19:51:47,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 19:51:47,264 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-27 19:51:47,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:47,265 INFO L85 PathProgramCache]: Analyzing trace with hash -560210787, now seen corresponding path program 1 times [2024-11-27 19:51:47,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 19:51:47,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675537859] [2024-11-27 19:51:47,265 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:47,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:47,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 19:51:47,283 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 19:51:47,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 19:51:47,297 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-27 19:51:48,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 19:51:48,011 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 19:51:48,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 19:51:48,066 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.11 07:51:48 BoogieIcfgContainer [2024-11-27 19:51:48,067 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-27 19:51:48,068 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-27 19:51:48,068 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-27 19:51:48,068 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-27 19:51:48,069 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 07:51:43" (3/4) ... [2024-11-27 19:51:48,071 INFO L143 WitnessPrinter]: Generating witness for non-termination counterexample [2024-11-27 19:51:48,109 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b86ddb2-21b5-4f6d-8793-86e73f199c3a/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-27 19:51:48,109 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-27 19:51:48,111 INFO L158 Benchmark]: Toolchain (without parser) took 5763.16ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 117.3MB in the beginning and 282.9MB in the end (delta: -165.6MB). Peak memory consumption was 118.0MB. Max. memory is 16.1GB. [2024-11-27 19:51:48,111 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 142.6MB. Free memory is still 80.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 19:51:48,112 INFO L158 Benchmark]: CACSL2BoogieTranslator took 569.78ms. Allocated memory is still 142.6MB. Free memory was 117.1MB in the beginning and 99.5MB in the end (delta: 17.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-27 19:51:48,113 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.88ms. Allocated memory is still 142.6MB. Free memory was 99.3MB in the beginning and 97.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 19:51:48,114 INFO L158 Benchmark]: Boogie Preprocessor took 83.58ms. Allocated memory is still 142.6MB. Free memory was 97.2MB in the beginning and 94.1MB in the end (delta: 3.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 19:51:48,114 INFO L158 Benchmark]: RCFGBuilder took 778.92ms. Allocated memory is still 142.6MB. Free memory was 94.1MB in the beginning and 68.0MB in the end (delta: 26.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-27 19:51:48,115 INFO L158 Benchmark]: BuchiAutomizer took 4225.27ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 68.0MB in the beginning and 284.2MB in the end (delta: -216.2MB). Peak memory consumption was 67.6MB. Max. memory is 16.1GB. [2024-11-27 19:51:48,116 INFO L158 Benchmark]: Witness Printer took 41.49ms. Allocated memory is still 427.8MB. Free memory was 284.2MB in the beginning and 282.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 19:51:48,117 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 142.6MB. Free memory is still 80.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 569.78ms. Allocated memory is still 142.6MB. Free memory was 117.1MB in the beginning and 99.5MB in the end (delta: 17.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.88ms. Allocated memory is still 142.6MB. Free memory was 99.3MB in the beginning and 97.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 83.58ms. Allocated memory is still 142.6MB. Free memory was 97.2MB in the beginning and 94.1MB in the end (delta: 3.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 778.92ms. Allocated memory is still 142.6MB. Free memory was 94.1MB in the beginning and 68.0MB in the end (delta: 26.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * BuchiAutomizer took 4225.27ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 68.0MB in the beginning and 284.2MB in the end (delta: -216.2MB). Peak memory consumption was 67.6MB. Max. memory is 16.1GB. * Witness Printer took 41.49ms. Allocated memory is still 427.8MB. Free memory was 284.2MB in the beginning and 282.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 8 locations. The remainder module has 67 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.1s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 3.2s. Construction of modules took 0.5s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 81 StatesRemovedByMinimization, 2 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 [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 190 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 190 mSDsluCounter, 861 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 596 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 235 IncrementalHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 265 mSDtfsCounter, 235 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 555]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L552] struct TreeNode* root = malloc(sizeof(*root)), *n; [L552] struct TreeNode* root = malloc(sizeof(*root)), *n; [L553] root->left = ((void *)0) [L554] root->right = ((void *)0) Loop: [L555] COND TRUE __VERIFIER_nondet_int() [L556] n = root [L557] EXPR n->left [L557] n->left && n->right [L557] n->left && n->right [L557] COND FALSE !(n->left && n->right) [L563] EXPR n->left [L563] !n->left && __VERIFIER_nondet_int() [L563] !n->left && __VERIFIER_nondet_int() [L563] COND FALSE !(!n->left && __VERIFIER_nondet_int()) [L568] EXPR n->right [L568] !n->right && __VERIFIER_nondet_int() [L568] !n->right && __VERIFIER_nondet_int() [L568] COND FALSE !(!n->right && __VERIFIER_nondet_int()) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 555]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L552] struct TreeNode* root = malloc(sizeof(*root)), *n; [L552] struct TreeNode* root = malloc(sizeof(*root)), *n; [L553] root->left = ((void *)0) [L554] root->right = ((void *)0) Loop: [L555] COND TRUE __VERIFIER_nondet_int() [L556] n = root [L557] EXPR n->left [L557] n->left && n->right [L557] n->left && n->right [L557] COND FALSE !(n->left && n->right) [L563] EXPR n->left [L563] !n->left && __VERIFIER_nondet_int() [L563] !n->left && __VERIFIER_nondet_int() [L563] COND FALSE !(!n->left && __VERIFIER_nondet_int()) [L568] EXPR n->right [L568] !n->right && __VERIFIER_nondet_int() [L568] !n->right && __VERIFIER_nondet_int() [L568] COND FALSE !(!n->right && __VERIFIER_nondet_int()) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2024-11-27 19:51:48,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b86ddb2-21b5-4f6d-8793-86e73f199c3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 19:51:48,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b86ddb2-21b5-4f6d-8793-86e73f199c3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-27 19:51:48,545 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b86ddb2-21b5-4f6d-8793-86e73f199c3a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 19:51:48,743 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b86ddb2-21b5-4f6d-8793-86e73f199c3a/bin/uautomizer-verify-aQ6SnzHsRB/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)