./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/list-ext2-properties/list_and_tree_cnstr-2.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_f5bb25a2-91be-493a-8d84-fd0b1b4bc596/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5bb25a2-91be-493a-8d84-fd0b1b4bc596/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_f5bb25a2-91be-493a-8d84-fd0b1b4bc596/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5bb25a2-91be-493a-8d84-fd0b1b4bc596/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/list-ext2-properties/list_and_tree_cnstr-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5bb25a2-91be-493a-8d84-fd0b1b4bc596/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_f5bb25a2-91be-493a-8d84-fd0b1b4bc596/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 073ee5c5f9e0a51509973bbde311a97e7673effbb0d5db6a027ba4e786762a02 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:52:56,854 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:52:56,935 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5bb25a2-91be-493a-8d84-fd0b1b4bc596/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Termination-32bit-Automizer_Default.epf [2024-11-28 03:52:56,944 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:52:56,944 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:52:56,987 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:52:56,989 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:52:56,989 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:52:56,989 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:52:56,990 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:52:56,991 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:52:56,991 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:52:56,991 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:52:56,991 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-28 03:52:56,992 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-28 03:52:56,992 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-28 03:52:56,992 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-28 03:52:56,993 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-28 03:52:56,993 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-28 03:52:56,993 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:52:56,993 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-28 03:52:56,993 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:52:56,993 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:52:56,993 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:52:56,993 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:52:56,994 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-28 03:52:56,994 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-28 03:52:56,994 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-28 03:52:56,994 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 03:52:56,994 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:52:56,994 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:52:56,994 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-28 03:52:56,994 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:52:56,994 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:52:56,995 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:52:56,995 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:52:56,995 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:52:56,995 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL_NO_AM [2024-11-28 03:52:56,995 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-28 03:52:56,995 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_f5bb25a2-91be-493a-8d84-fd0b1b4bc596/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 -> 073ee5c5f9e0a51509973bbde311a97e7673effbb0d5db6a027ba4e786762a02 [2024-11-28 03:52:57,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:52:57,310 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:52:57,312 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:52:57,313 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:52:57,313 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:52:57,314 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5bb25a2-91be-493a-8d84-fd0b1b4bc596/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/list-ext2-properties/list_and_tree_cnstr-2.i [2024-11-28 03:53:00,252 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5bb25a2-91be-493a-8d84-fd0b1b4bc596/bin/uautomizer-verify-aQ6SnzHsRB/data/4a1b9fef3/ce3ca69bb2ad4ad69e801d22d0132300/FLAGd19b8734d [2024-11-28 03:53:00,628 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:53:00,632 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5bb25a2-91be-493a-8d84-fd0b1b4bc596/sv-benchmarks/c/list-ext2-properties/list_and_tree_cnstr-2.i [2024-11-28 03:53:00,654 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5bb25a2-91be-493a-8d84-fd0b1b4bc596/bin/uautomizer-verify-aQ6SnzHsRB/data/4a1b9fef3/ce3ca69bb2ad4ad69e801d22d0132300/FLAGd19b8734d [2024-11-28 03:53:00,682 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5bb25a2-91be-493a-8d84-fd0b1b4bc596/bin/uautomizer-verify-aQ6SnzHsRB/data/4a1b9fef3/ce3ca69bb2ad4ad69e801d22d0132300 [2024-11-28 03:53:00,686 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:53:00,689 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:53:00,693 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:53:00,693 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:53:00,698 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:53:00,700 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:53:00" (1/1) ... [2024-11-28 03:53:00,701 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2499aaf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:00, skipping insertion in model container [2024-11-28 03:53:00,701 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:53:00" (1/1) ... [2024-11-28 03:53:00,761 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:53:01,072 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:53:01,086 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:53:01,138 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:53:01,173 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:53:01,174 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:01 WrapperNode [2024-11-28 03:53:01,174 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:53:01,175 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:53:01,175 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:53:01,176 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:53:01,180 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:01" (1/1) ... [2024-11-28 03:53:01,191 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:01" (1/1) ... [2024-11-28 03:53:01,212 INFO L138 Inliner]: procedures = 122, calls = 55, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 201 [2024-11-28 03:53:01,212 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:53:01,213 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:53:01,213 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:53:01,213 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:53:01,222 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:01" (1/1) ... [2024-11-28 03:53:01,223 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:01" (1/1) ... [2024-11-28 03:53:01,226 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:01" (1/1) ... [2024-11-28 03:53:01,245 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]. [2024-11-28 03:53:01,245 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:01" (1/1) ... [2024-11-28 03:53:01,245 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:01" (1/1) ... [2024-11-28 03:53:01,256 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:01" (1/1) ... [2024-11-28 03:53:01,257 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:01" (1/1) ... [2024-11-28 03:53:01,261 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:01" (1/1) ... [2024-11-28 03:53:01,263 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:01" (1/1) ... [2024-11-28 03:53:01,264 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:01" (1/1) ... [2024-11-28 03:53:01,267 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:53:01,267 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:53:01,267 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:53:01,268 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:53:01,268 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:01" (1/1) ... [2024-11-28 03:53:01,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 03:53:01,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5bb25a2-91be-493a-8d84-fd0b1b4bc596/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:53:01,300 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5bb25a2-91be-493a-8d84-fd0b1b4bc596/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 03:53:01,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5bb25a2-91be-493a-8d84-fd0b1b4bc596/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-11-28 03:53:01,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 03:53:01,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 03:53:01,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 03:53:01,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 03:53:01,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 03:53:01,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 03:53:01,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 03:53:01,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:53:01,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 03:53:01,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 03:53:01,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 03:53:01,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 03:53:01,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 03:53:01,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 03:53:01,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 03:53:01,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:53:01,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 03:53:01,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 03:53:01,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:53:01,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:53:01,486 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:53:01,488 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:53:02,051 INFO L? ?]: Removed 63 outVars from TransFormulas that were not future-live. [2024-11-28 03:53:02,051 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:53:02,065 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:53:02,066 INFO L312 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-28 03:53:02,066 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:53:02 BoogieIcfgContainer [2024-11-28 03:53:02,066 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:53:02,067 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-28 03:53:02,067 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-28 03:53:02,075 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-28 03:53:02,076 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-28 03:53:02,076 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 03:53:00" (1/3) ... [2024-11-28 03:53:02,078 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5f7981dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:53:02, skipping insertion in model container [2024-11-28 03:53:02,079 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-28 03:53:02,079 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:01" (2/3) ... [2024-11-28 03:53:02,080 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5f7981dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:53:02, skipping insertion in model container [2024-11-28 03:53:02,080 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-28 03:53:02,080 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:53:02" (3/3) ... [2024-11-28 03:53:02,081 INFO L363 chiAutomizerObserver]: Analyzing ICFG list_and_tree_cnstr-2.i [2024-11-28 03:53:02,130 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-28 03:53:02,130 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-28 03:53:02,130 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-28 03:53:02,130 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-28 03:53:02,131 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-28 03:53:02,131 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-28 03:53:02,131 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-28 03:53:02,131 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-28 03:53:02,136 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) [2024-11-28 03:53:02,153 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 43 [2024-11-28 03:53:02,153 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-28 03:53:02,153 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-28 03:53:02,159 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-28 03:53:02,160 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:53:02,160 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-28 03:53:02,160 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) [2024-11-28 03:53:02,165 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 43 [2024-11-28 03:53:02,167 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-28 03:53:02,167 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-28 03:53:02,168 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-28 03:53:02,168 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:53:02,206 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$#2(0, 0, main_~root~0#1.base, 4 + main_~root~0#1.offset, 4);" [2024-11-28 03:53:02,206 INFO L749 eck$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;" [2024-11-28 03:53:02,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:53:02,212 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-11-28 03:53:02,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 03:53:02,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189241155] [2024-11-28 03:53:02,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:53:02,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:53:02,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:53:02,341 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:53:02,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:53:02,385 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 03:53:02,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:53:02,388 INFO L85 PathProgramCache]: Analyzing trace with hash -329764052, now seen corresponding path program 1 times [2024-11-28 03:53:02,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 03:53:02,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665957889] [2024-11-28 03:53:02,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:53:02,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:53:02,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:53:02,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL_NO_AM found an infeasible trace [2024-11-28 03:53:02,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665957889] [2024-11-28 03:53:02,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665957889] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:53:02,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824998589] [2024-11-28 03:53:02,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:53:02,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:53:02,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5bb25a2-91be-493a-8d84-fd0b1b4bc596/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:53:02,506 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5bb25a2-91be-493a-8d84-fd0b1b4bc596/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:53:02,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5bb25a2-91be-493a-8d84-fd0b1b4bc596/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:53:02,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:53:02,622 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 03:53:02,624 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:53:02,629 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:53:02,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824998589] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:53:02,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:53:02,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-28 03:53:02,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856196089] [2024-11-28 03:53:02,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:53:02,643 INFO L764 eck$LassoCheckResult]: loop already infeasible [2024-11-28 03:53:02,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2024-11-28 03:53:02,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:53:02,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:53:02,681 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) [2024-11-28 03:53:02,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:53:02,693 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2024-11-28 03:53:02,694 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 58 states and 78 transitions. [2024-11-28 03:53:02,700 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 43 [2024-11-28 03:53:02,708 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 58 states to 50 states and 70 transitions. [2024-11-28 03:53:02,709 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 50 [2024-11-28 03:53:02,710 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 50 [2024-11-28 03:53:02,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 70 transitions. [2024-11-28 03:53:02,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-28 03:53:02,712 INFO L218 hiAutomatonCegarLoop]: Abstraction has 50 states and 70 transitions. [2024-11-28 03:53:02,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states and 70 transitions. [2024-11-28 03:53:02,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-28 03:53:02,741 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) [2024-11-28 03:53:02,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2024-11-28 03:53:02,744 INFO L240 hiAutomatonCegarLoop]: Abstraction has 50 states and 70 transitions. [2024-11-28 03:53:02,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:53:02,749 INFO L425 stractBuchiCegarLoop]: Abstraction has 50 states and 70 transitions. [2024-11-28 03:53:02,749 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-28 03:53:02,751 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 50 states and 70 transitions. [2024-11-28 03:53:02,752 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 43 [2024-11-28 03:53:02,752 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-28 03:53:02,753 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-28 03:53:02,753 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-28 03:53:02,753 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:53:02,753 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);" [2024-11-28 03:53:02,753 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;" [2024-11-28 03:53:02,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:53:02,754 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2024-11-28 03:53:02,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 03:53:02,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839790111] [2024-11-28 03:53:02,754 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:53:02,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:53:02,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:53:02,786 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:53:02,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:53:02,813 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 03:53:02,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:53:02,816 INFO L85 PathProgramCache]: Analyzing trace with hash -965072545, now seen corresponding path program 1 times [2024-11-28 03:53:02,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 03:53:02,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683891285] [2024-11-28 03:53:02,817 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:53:02,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:53:02,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:53:03,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL_NO_AM found an infeasible trace [2024-11-28 03:53:03,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683891285] [2024-11-28 03:53:03,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683891285] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:53:03,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574955463] [2024-11-28 03:53:03,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:53:03,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:53:03,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5bb25a2-91be-493a-8d84-fd0b1b4bc596/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:53:03,263 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5bb25a2-91be-493a-8d84-fd0b1b4bc596/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:53:03,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5bb25a2-91be-493a-8d84-fd0b1b4bc596/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:53:03,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:53:03,382 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 03:53:03,384 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:53:03,536 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 [2024-11-28 03:53:03,541 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 [2024-11-28 03:53:03,559 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:53:03,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574955463] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:53:03,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:53:03,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2024-11-28 03:53:03,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264109341] [2024-11-28 03:53:03,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:53:03,610 INFO L764 eck$LassoCheckResult]: loop already infeasible [2024-11-28 03:53:03,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2024-11-28 03:53:03,610 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:53:03,611 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:53:03,611 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) [2024-11-28 03:53:03,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:53:03,882 INFO L93 Difference]: Finished difference Result 87 states and 118 transitions. [2024-11-28 03:53:03,883 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 87 states and 118 transitions. [2024-11-28 03:53:03,885 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 73 [2024-11-28 03:53:03,887 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 87 states to 87 states and 118 transitions. [2024-11-28 03:53:03,887 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 87 [2024-11-28 03:53:03,887 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 87 [2024-11-28 03:53:03,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 118 transitions. [2024-11-28 03:53:03,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-28 03:53:03,888 INFO L218 hiAutomatonCegarLoop]: Abstraction has 87 states and 118 transitions. [2024-11-28 03:53:03,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states and 118 transitions. [2024-11-28 03:53:03,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 54. [2024-11-28 03:53:03,892 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) [2024-11-28 03:53:03,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 75 transitions. [2024-11-28 03:53:03,892 INFO L240 hiAutomatonCegarLoop]: Abstraction has 54 states and 75 transitions. [2024-11-28 03:53:03,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:53:03,896 INFO L425 stractBuchiCegarLoop]: Abstraction has 54 states and 75 transitions. [2024-11-28 03:53:03,896 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-11-28 03:53:03,896 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 75 transitions. [2024-11-28 03:53:03,897 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 47 [2024-11-28 03:53:03,897 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-28 03:53:03,897 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-28 03:53:03,898 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-28 03:53:03,898 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:53:03,898 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$#2(0, 0, main_~root~0#1.base, 4 + main_~root~0#1.offset, 4);" [2024-11-28 03:53:03,898 INFO L749 eck$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;" [2024-11-28 03:53:03,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:53:03,901 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2024-11-28 03:53:03,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 03:53:03,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119453963] [2024-11-28 03:53:03,901 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:53:03,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:53:03,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:53:03,925 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:53:03,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:53:03,949 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 03:53:03,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:53:03,949 INFO L85 PathProgramCache]: Analyzing trace with hash -963165921, now seen corresponding path program 1 times [2024-11-28 03:53:03,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 03:53:03,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215088864] [2024-11-28 03:53:03,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:53:03,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:53:03,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:53:03,970 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:53:03,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:53:03,984 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 03:53:03,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:53:03,985 INFO L85 PathProgramCache]: Analyzing trace with hash 250982881, now seen corresponding path program 1 times [2024-11-28 03:53:03,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 03:53:03,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531664080] [2024-11-28 03:53:03,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:53:03,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:53:04,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:53:04,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL_NO_AM found an infeasible trace [2024-11-28 03:53:04,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531664080] [2024-11-28 03:53:04,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531664080] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:53:04,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327430260] [2024-11-28 03:53:04,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:53:04,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:53:04,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5bb25a2-91be-493a-8d84-fd0b1b4bc596/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:53:04,331 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5bb25a2-91be-493a-8d84-fd0b1b4bc596/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:53:04,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5bb25a2-91be-493a-8d84-fd0b1b4bc596/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:53:04,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:53:04,451 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 03:53:04,455 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:53:04,475 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 [2024-11-28 03:53:04,490 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 [2024-11-28 03:53:04,646 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:53:04,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327430260] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:53:04,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:53:04,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-28 03:53:04,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770504858] [2024-11-28 03:53:04,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:53:05,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2024-11-28 03:53:05,033 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:53:05,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:53:05,033 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) [2024-11-28 03:53:05,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:53:05,483 INFO L93 Difference]: Finished difference Result 115 states and 159 transitions. [2024-11-28 03:53:05,483 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 115 states and 159 transitions. [2024-11-28 03:53:05,485 INFO L131 ngComponentsAnalysis]: Automaton has 18 accepting balls. 96 [2024-11-28 03:53:05,486 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 115 states to 115 states and 159 transitions. [2024-11-28 03:53:05,486 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 115 [2024-11-28 03:53:05,487 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 115 [2024-11-28 03:53:05,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 115 states and 159 transitions. [2024-11-28 03:53:05,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-28 03:53:05,487 INFO L218 hiAutomatonCegarLoop]: Abstraction has 115 states and 159 transitions. [2024-11-28 03:53:05,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states and 159 transitions. [2024-11-28 03:53:05,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 67. [2024-11-28 03:53:05,495 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) [2024-11-28 03:53:05,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 92 transitions. [2024-11-28 03:53:05,496 INFO L240 hiAutomatonCegarLoop]: Abstraction has 67 states and 92 transitions. [2024-11-28 03:53:05,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:53:05,498 INFO L425 stractBuchiCegarLoop]: Abstraction has 67 states and 92 transitions. [2024-11-28 03:53:05,498 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-11-28 03:53:05,498 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 67 states and 92 transitions. [2024-11-28 03:53:05,499 INFO L131 ngComponentsAnalysis]: Automaton has 10 accepting balls. 60 [2024-11-28 03:53:05,499 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-28 03:53:05,499 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-28 03:53:05,500 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-28 03:53:05,500 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:53:05,500 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$#2(0, 0, main_~root~0#1.base, 4 + main_~root~0#1.offset, 4);" [2024-11-28 03:53:05,500 INFO L749 eck$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;" [2024-11-28 03:53:05,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:53:05,500 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2024-11-28 03:53:05,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 03:53:05,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091957198] [2024-11-28 03:53:05,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:53:05,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:53:05,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:53:05,518 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:53:05,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:53:05,528 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 03:53:05,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:53:05,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1774359589, now seen corresponding path program 1 times [2024-11-28 03:53:05,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 03:53:05,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356873572] [2024-11-28 03:53:05,529 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:53:05,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:53:05,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:53:05,545 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:53:05,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:53:05,559 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 03:53:05,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:53:05,559 INFO L85 PathProgramCache]: Analyzing trace with hash -560210787, now seen corresponding path program 1 times [2024-11-28 03:53:05,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 03:53:05,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835516530] [2024-11-28 03:53:05,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:53:05,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:53:05,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:53:05,582 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:53:05,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:53:05,595 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 03:53:06,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:53:06,296 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:53:06,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:53:06,346 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 03:53:06 BoogieIcfgContainer [2024-11-28 03:53:06,347 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-28 03:53:06,347 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 03:53:06,347 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 03:53:06,347 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 03:53:06,348 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:53:02" (3/4) ... [2024-11-28 03:53:06,350 INFO L143 WitnessPrinter]: Generating witness for non-termination counterexample [2024-11-28 03:53:06,380 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5bb25a2-91be-493a-8d84-fd0b1b4bc596/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 03:53:06,381 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 03:53:06,381 INFO L158 Benchmark]: Toolchain (without parser) took 5692.56ms. Allocated memory was 117.4MB in the beginning and 343.9MB in the end (delta: 226.5MB). Free memory was 92.3MB in the beginning and 301.2MB in the end (delta: -208.9MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. [2024-11-28 03:53:06,382 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 167.8MB. Free memory is still 103.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:53:06,382 INFO L158 Benchmark]: CACSL2BoogieTranslator took 482.03ms. Allocated memory is still 117.4MB. Free memory was 92.3MB in the beginning and 74.5MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 03:53:06,382 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.14ms. Allocated memory is still 117.4MB. Free memory was 74.5MB in the beginning and 72.2MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:53:06,382 INFO L158 Benchmark]: Boogie Preprocessor took 54.02ms. Allocated memory is still 117.4MB. Free memory was 72.2MB in the beginning and 69.5MB in the end (delta: 2.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:53:06,383 INFO L158 Benchmark]: RCFGBuilder took 798.84ms. Allocated memory is still 117.4MB. Free memory was 69.1MB in the beginning and 42.4MB in the end (delta: 26.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-28 03:53:06,383 INFO L158 Benchmark]: BuchiAutomizer took 4279.54ms. Allocated memory was 117.4MB in the beginning and 343.9MB in the end (delta: 226.5MB). Free memory was 42.4MB in the beginning and 304.5MB in the end (delta: -262.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:53:06,383 INFO L158 Benchmark]: Witness Printer took 33.53ms. Allocated memory is still 343.9MB. Free memory was 304.5MB in the beginning and 301.2MB in the end (delta: 3.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:53:06,385 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 167.8MB. Free memory is still 103.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 482.03ms. Allocated memory is still 117.4MB. Free memory was 92.3MB in the beginning and 74.5MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.14ms. Allocated memory is still 117.4MB. Free memory was 74.5MB in the beginning and 72.2MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 54.02ms. Allocated memory is still 117.4MB. Free memory was 72.2MB in the beginning and 69.5MB in the end (delta: 2.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 798.84ms. Allocated memory is still 117.4MB. Free memory was 69.1MB in the beginning and 42.4MB in the end (delta: 26.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * BuchiAutomizer took 4279.54ms. Allocated memory was 117.4MB in the beginning and 343.9MB in the end (delta: 226.5MB). Free memory was 42.4MB in the beginning and 304.5MB in the end (delta: -262.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 33.53ms. Allocated memory is still 343.9MB. Free memory was 304.5MB in the beginning and 301.2MB in the end (delta: 3.3MB). Peak memory consumption was 8.4MB. 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 4.2s 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! [2024-11-28 03:53:06,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5bb25a2-91be-493a-8d84-fd0b1b4bc596/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 03:53:06,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5bb25a2-91be-493a-8d84-fd0b1b4bc596/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 03:53:06,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5bb25a2-91be-493a-8d84-fd0b1b4bc596/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 03:53:07,003 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5bb25a2-91be-493a-8d84-fd0b1b4bc596/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)