./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a899756e-4796-4fc4-b54f-1a198e81ef07/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a899756e-4796-4fc4-b54f-1a198e81ef07/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_a899756e-4796-4fc4-b54f-1a198e81ef07/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a899756e-4796-4fc4-b54f-1a198e81ef07/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a899756e-4796-4fc4-b54f-1a198e81ef07/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a899756e-4796-4fc4-b54f-1a198e81ef07/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e99503bfcf6201b20e9e96de963aa687998a61153cfad44b7458729e6b441ff2 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:18:55,017 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:18:55,103 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a899756e-4796-4fc4-b54f-1a198e81ef07/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 20:18:55,110 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:18:55,113 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:18:55,144 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:18:55,146 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:18:55,146 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:18:55,146 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:18:55,147 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:18:55,147 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:18:55,148 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:18:55,148 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:18:55,148 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:18:55,149 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:18:55,150 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:18:55,150 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:18:55,150 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:18:55,150 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:18:55,150 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:18:55,150 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:18:55,150 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:18:55,150 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:18:55,151 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:18:55,151 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:18:55,151 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:18:55,151 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:18:55,152 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:18:55,152 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:18:55,152 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:18:55,152 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:18:55,152 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:18:55,152 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:18:55,152 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:18:55,153 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:18:55,153 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:18:55,153 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:18:55,153 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:18:55,153 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:18:55,153 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:18:55,153 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:18:55,153 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:18:55,153 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:18:55,153 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:18:55,153 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:18:55,153 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:18:55,153 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:18:55,154 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:18:55,154 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_a899756e-4796-4fc4-b54f-1a198e81ef07/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(G ! call(reach_error())) ) 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 -> e99503bfcf6201b20e9e96de963aa687998a61153cfad44b7458729e6b441ff2 [2024-11-27 20:18:55,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:18:55,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:18:55,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:18:55,457 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:18:55,457 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:18:55,458 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a899756e-4796-4fc4-b54f-1a198e81ef07/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl-1.i [2024-11-27 20:18:58,391 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a899756e-4796-4fc4-b54f-1a198e81ef07/bin/uautomizer-verify-aQ6SnzHsRB/data/ee7084e55/d17203921fda4b2d8ab03a5187d3b06d/FLAG021c6cbc0 [2024-11-27 20:18:58,717 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:18:58,719 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a899756e-4796-4fc4-b54f-1a198e81ef07/sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl-1.i [2024-11-27 20:18:58,731 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a899756e-4796-4fc4-b54f-1a198e81ef07/bin/uautomizer-verify-aQ6SnzHsRB/data/ee7084e55/d17203921fda4b2d8ab03a5187d3b06d/FLAG021c6cbc0 [2024-11-27 20:18:58,961 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a899756e-4796-4fc4-b54f-1a198e81ef07/bin/uautomizer-verify-aQ6SnzHsRB/data/ee7084e55/d17203921fda4b2d8ab03a5187d3b06d [2024-11-27 20:18:58,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:18:58,965 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:18:58,966 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:18:58,966 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:18:58,971 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:18:58,972 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:18:58" (1/1) ... [2024-11-27 20:18:58,972 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 27.11 08:18:58, skipping insertion in model container [2024-11-27 20:18:58,973 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:18:58" (1/1) ... [2024-11-27 20:18:59,002 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:18:59,340 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a899756e-4796-4fc4-b54f-1a198e81ef07/sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl-1.i[24032,24045] [2024-11-27 20:18:59,346 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:18:59,359 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:18:59,422 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a899756e-4796-4fc4-b54f-1a198e81ef07/sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl-1.i[24032,24045] [2024-11-27 20:18:59,426 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:18:59,462 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:18:59,463 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:18:59 WrapperNode [2024-11-27 20:18:59,464 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:18:59,465 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:18:59,466 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:18:59,466 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:18:59,475 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:18:59" (1/1) ... [2024-11-27 20:18:59,493 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:18:59" (1/1) ... [2024-11-27 20:18:59,523 INFO L138 Inliner]: procedures = 126, calls = 57, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 170 [2024-11-27 20:18:59,523 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:18:59,524 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:18:59,524 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:18:59,524 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:18:59,534 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:18:59" (1/1) ... [2024-11-27 20:18:59,534 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:18:59" (1/1) ... [2024-11-27 20:18:59,538 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:18:59" (1/1) ... [2024-11-27 20:18:59,577 INFO L175 MemorySlicer]: Split 39 memory accesses to 4 slices as follows [2, 13, 8, 16]. 41 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 16 writes are split as follows [0, 3, 5, 8]. [2024-11-27 20:18:59,579 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:18:59" (1/1) ... [2024-11-27 20:18:59,579 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:18:59" (1/1) ... [2024-11-27 20:18:59,595 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:18:59" (1/1) ... [2024-11-27 20:18:59,596 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:18:59" (1/1) ... [2024-11-27 20:18:59,599 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:18:59" (1/1) ... [2024-11-27 20:18:59,604 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:18:59" (1/1) ... [2024-11-27 20:18:59,605 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:18:59" (1/1) ... [2024-11-27 20:18:59,612 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:18:59,616 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:18:59,616 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:18:59,616 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:18:59,617 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:18:59" (1/1) ... [2024-11-27 20:18:59,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:18:59,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a899756e-4796-4fc4-b54f-1a198e81ef07/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:18:59,659 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a899756e-4796-4fc4-b54f-1a198e81ef07/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:18:59,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a899756e-4796-4fc4-b54f-1a198e81ef07/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:18:59,694 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2024-11-27 20:18:59,695 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2024-11-27 20:18:59,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-27 20:18:59,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-27 20:18:59,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-27 20:18:59,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-27 20:18:59,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-27 20:18:59,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-27 20:18:59,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-27 20:18:59,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-27 20:18:59,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-27 20:18:59,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:18:59,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-27 20:18:59,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-27 20:18:59,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-27 20:18:59,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-27 20:18:59,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-27 20:18:59,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-27 20:18:59,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-27 20:18:59,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-27 20:18:59,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-27 20:18:59,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:18:59,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 20:18:59,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-27 20:18:59,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-27 20:18:59,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:18:59,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:18:59,867 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:18:59,869 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:18:59,898 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2024-11-27 20:19:00,209 INFO L? ?]: Removed 42 outVars from TransFormulas that were not future-live. [2024-11-27 20:19:00,210 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:19:00,223 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:19:00,224 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-27 20:19:00,224 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:19:00 BoogieIcfgContainer [2024-11-27 20:19:00,224 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:19:00,227 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:19:00,227 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:19:00,232 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:19:00,232 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:18:58" (1/3) ... [2024-11-27 20:19:00,233 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68f24750 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:19:00, skipping insertion in model container [2024-11-27 20:19:00,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:18:59" (2/3) ... [2024-11-27 20:19:00,234 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68f24750 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:19:00, skipping insertion in model container [2024-11-27 20:19:00,234 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:19:00" (3/3) ... [2024-11-27 20:19:00,236 INFO L128 eAbstractionObserver]: Analyzing ICFG simple_and_skiplist_2lvl-1.i [2024-11-27 20:19:00,252 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:19:00,254 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG simple_and_skiplist_2lvl-1.i that has 2 procedures, 47 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2024-11-27 20:19:00,313 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:19:00,324 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2d48a31e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:19:00,325 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 20:19:00,329 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 44 states have internal predecessors, (61), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:19:00,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-27 20:19:00,334 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:19:00,335 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:19:00,335 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:19:00,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:19:00,340 INFO L85 PathProgramCache]: Analyzing trace with hash 129654765, now seen corresponding path program 1 times [2024-11-27 20:19:00,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:19:00,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036786748] [2024-11-27 20:19:00,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:19:00,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:19:00,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:19:00,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:19:00,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:19:00,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036786748] [2024-11-27 20:19:00,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036786748] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:19:00,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:19:00,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:19:00,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085244338] [2024-11-27 20:19:00,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:19:00,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 20:19:00,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:19:00,556 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 20:19:00,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:19:00,559 INFO L87 Difference]: Start difference. First operand has 46 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 44 states have internal predecessors, (61), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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 20:19:00,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:19:00,574 INFO L93 Difference]: Finished difference Result 79 states and 109 transitions. [2024-11-27 20:19:00,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 20:19:00,576 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 10 [2024-11-27 20:19:00,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:19:00,579 INFO L225 Difference]: With dead ends: 79 [2024-11-27 20:19:00,579 INFO L226 Difference]: Without dead ends: 16 [2024-11-27 20:19:00,582 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:19:00,585 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:19:00,586 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:19:00,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-27 20:19:00,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-11-27 20:19:00,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 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 20:19:00,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2024-11-27 20:19:00,616 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 10 [2024-11-27 20:19:00,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:19:00,616 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2024-11-27 20:19:00,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has 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 20:19:00,617 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2024-11-27 20:19:00,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-27 20:19:00,617 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:19:00,617 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:19:00,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 20:19:00,618 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:19:00,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:19:00,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1410165730, now seen corresponding path program 1 times [2024-11-27 20:19:00,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:19:00,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348715513] [2024-11-27 20:19:00,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:19:00,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:19:00,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:19:00,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:19:00,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:19:00,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348715513] [2024-11-27 20:19:00,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348715513] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:19:00,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:19:00,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:19:00,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337240062] [2024-11-27 20:19:00,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:19:00,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:19:00,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:19:00,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:19:00,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:19:00,989 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 20:19:01,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:19:01,089 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2024-11-27 20:19:01,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:19:01,091 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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) Word has length 11 [2024-11-27 20:19:01,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:19:01,092 INFO L225 Difference]: With dead ends: 28 [2024-11-27 20:19:01,092 INFO L226 Difference]: Without dead ends: 26 [2024-11-27 20:19:01,092 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:19:01,094 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:19:01,095 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 34 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:19:01,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-27 20:19:01,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 22. [2024-11-27 20:19:01,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 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 20:19:01,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2024-11-27 20:19:01,100 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 11 [2024-11-27 20:19:01,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:19:01,101 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2024-11-27 20:19:01,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 20:19:01,101 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2024-11-27 20:19:01,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-27 20:19:01,102 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:19:01,102 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:19:01,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:19:01,103 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:19:01,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:19:01,106 INFO L85 PathProgramCache]: Analyzing trace with hash 2125731432, now seen corresponding path program 1 times [2024-11-27 20:19:01,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:19:01,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909441528] [2024-11-27 20:19:01,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:19:01,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:19:01,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:19:01,591 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:19:01,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:19:01,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909441528] [2024-11-27 20:19:01,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909441528] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:19:01,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204469957] [2024-11-27 20:19:01,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:19:01,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:19:01,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a899756e-4796-4fc4-b54f-1a198e81ef07/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:19:01,596 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a899756e-4796-4fc4-b54f-1a198e81ef07/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:19:01,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a899756e-4796-4fc4-b54f-1a198e81ef07/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:19:01,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:19:01,744 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-27 20:19:01,748 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:19:01,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-27 20:19:01,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-27 20:19:01,958 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:19:01,959 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:19:02,041 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 27 treesize of output 21 [2024-11-27 20:19:02,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:19:02,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:19:02,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:19:02,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204469957] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:19:02,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:19:02,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 8 [2024-11-27 20:19:02,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863922650] [2024-11-27 20:19:02,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:19:02,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:19:02,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:19:02,084 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:19:02,084 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:19:02,084 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:19:02,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:19:02,168 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2024-11-27 20:19:02,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:19:02,169 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-27 20:19:02,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:19:02,170 INFO L225 Difference]: With dead ends: 33 [2024-11-27 20:19:02,170 INFO L226 Difference]: Without dead ends: 21 [2024-11-27 20:19:02,170 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:19:02,172 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 13 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:19:02,173 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 49 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:19:02,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-27 20:19:02,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2024-11-27 20:19:02,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 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 20:19:02,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2024-11-27 20:19:02,178 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 15 [2024-11-27 20:19:02,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:19:02,179 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2024-11-27 20:19:02,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:19:02,179 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2024-11-27 20:19:02,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-27 20:19:02,179 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:19:02,180 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:19:02,189 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a899756e-4796-4fc4-b54f-1a198e81ef07/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 20:19:02,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a899756e-4796-4fc4-b54f-1a198e81ef07/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:19:02,380 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:19:02,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:19:02,381 INFO L85 PathProgramCache]: Analyzing trace with hash 963419155, now seen corresponding path program 1 times [2024-11-27 20:19:02,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:19:02,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851825136] [2024-11-27 20:19:02,381 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:19:02,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:19:02,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:19:02,407 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 20:19:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:19:02,443 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-27 20:19:02,443 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-27 20:19:02,444 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-27 20:19:02,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 20:19:02,449 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-27 20:19:02,471 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-27 20:19:02,474 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 08:19:02 BoogieIcfgContainer [2024-11-27 20:19:02,474 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-27 20:19:02,475 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-27 20:19:02,475 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-27 20:19:02,475 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-27 20:19:02,475 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:19:00" (3/4) ... [2024-11-27 20:19:02,476 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-27 20:19:02,516 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 7. [2024-11-27 20:19:02,566 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a899756e-4796-4fc4-b54f-1a198e81ef07/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-27 20:19:02,567 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a899756e-4796-4fc4-b54f-1a198e81ef07/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-27 20:19:02,567 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-27 20:19:02,569 INFO L158 Benchmark]: Toolchain (without parser) took 3603.73ms. Allocated memory is still 142.6MB. Free memory was 116.2MB in the beginning and 82.2MB in the end (delta: 34.0MB). Peak memory consumption was 33.1MB. Max. memory is 16.1GB. [2024-11-27 20:19:02,570 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 117.4MB. Free memory is still 72.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:19:02,570 INFO L158 Benchmark]: CACSL2BoogieTranslator took 498.25ms. Allocated memory is still 142.6MB. Free memory was 116.0MB in the beginning and 98.1MB in the end (delta: 17.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 20:19:02,571 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.59ms. Allocated memory is still 142.6MB. Free memory was 98.1MB in the beginning and 96.1MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:19:02,571 INFO L158 Benchmark]: Boogie Preprocessor took 88.48ms. Allocated memory is still 142.6MB. Free memory was 95.9MB in the beginning and 93.0MB in the end (delta: 2.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:19:02,571 INFO L158 Benchmark]: RCFGBuilder took 608.39ms. Allocated memory is still 142.6MB. Free memory was 93.0MB in the beginning and 72.8MB in the end (delta: 20.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-27 20:19:02,572 INFO L158 Benchmark]: TraceAbstraction took 2247.26ms. Allocated memory is still 142.6MB. Free memory was 72.2MB in the beginning and 86.7MB in the end (delta: -14.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:19:02,572 INFO L158 Benchmark]: Witness Printer took 92.88ms. Allocated memory is still 142.6MB. Free memory was 86.7MB in the beginning and 82.2MB in the end (delta: 4.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:19:02,574 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 117.4MB. Free memory is still 72.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 498.25ms. Allocated memory is still 142.6MB. Free memory was 116.0MB in the beginning and 98.1MB in the end (delta: 17.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.59ms. Allocated memory is still 142.6MB. Free memory was 98.1MB in the beginning and 96.1MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 88.48ms. Allocated memory is still 142.6MB. Free memory was 95.9MB in the beginning and 93.0MB in the end (delta: 2.9MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 608.39ms. Allocated memory is still 142.6MB. Free memory was 93.0MB in the beginning and 72.8MB in the end (delta: 20.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2247.26ms. Allocated memory is still 142.6MB. Free memory was 72.2MB in the beginning and 86.7MB in the end (delta: -14.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 92.88ms. Allocated memory is still 142.6MB. Free memory was 86.7MB in the beginning and 82.2MB in the end (delta: 4.5MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 613]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L596] List a = (List) malloc(sizeof(struct node)); [L597] COND FALSE !(a == 0) VAL [a={-1:0}] [L598] List t; [L599] List p = a; [L600] a->h = 2 [L601] COND TRUE __VERIFIER_nondet_int() [L602] p->h = 1 [L603] t = (List) malloc(sizeof(struct node)) [L604] COND FALSE !(t == 0) VAL [a={-1:0}, p={-1:0}, t={-2:0}] [L605] p->n = t [L606] EXPR p->n [L606] p = p->n [L601] COND FALSE !(__VERIFIER_nondet_int()) [L608] p->h = 2 [L609] p->n = 0 [L610] p = a VAL [p={-1:0}] [L611] COND TRUE p!=0 VAL [p={-1:0}] [L612] EXPR p->h [L612] COND TRUE p->h != 2 [L613] reach_error() VAL [p={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.2s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 139 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 64 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 83 IncrementalHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 75 mSDtfsCounter, 83 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 61 ConstructedInterpolants, 0 QuantifiedInterpolants, 399 SizeOfPredicates, 2 NumberOfNonLiveVariables, 90 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 6/9 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-27 20:19:02,594 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a899756e-4796-4fc4-b54f-1a198e81ef07/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (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