./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/verifythis/tree_max_incorrect.c --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_af6cdd28-faca-48aa-83cc-b01a9064eb2b/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6cdd28-faca-48aa-83cc-b01a9064eb2b/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_af6cdd28-faca-48aa-83cc-b01a9064eb2b/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6cdd28-faca-48aa-83cc-b01a9064eb2b/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/verifythis/tree_max_incorrect.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6cdd28-faca-48aa-83cc-b01a9064eb2b/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_af6cdd28-faca-48aa-83cc-b01a9064eb2b/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 4f9d3bc4199d475d16a98f98af89b165bc24fe0a085f06600e60f95805b0186f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:16:43,025 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:16:43,117 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6cdd28-faca-48aa-83cc-b01a9064eb2b/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:16:43,128 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:16:43,129 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:16:43,171 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:16:43,171 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:16:43,172 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:16:43,172 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:16:43,172 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:16:43,172 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:16:43,172 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:16:43,173 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:16:43,174 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:16:43,175 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:16:43,175 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:16:43,175 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:16:43,175 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:16:43,176 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:16:43,176 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:16:43,176 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:16:43,176 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:16:43,176 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:16:43,176 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:16:43,176 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:16:43,176 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:16:43,176 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:16:43,176 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:16:43,177 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:16:43,177 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:16:43,177 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:16:43,177 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:16:43,177 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:16:43,177 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:16:43,177 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:16:43,177 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:16:43,177 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:16:43,177 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:16:43,178 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:16:43,178 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:16:43,178 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:16:43,178 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:16:43,178 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:16:43,178 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:16:43,178 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:16:43,178 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:16:43,178 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:16:43,178 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:16:43,179 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_af6cdd28-faca-48aa-83cc-b01a9064eb2b/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 -> 4f9d3bc4199d475d16a98f98af89b165bc24fe0a085f06600e60f95805b0186f [2024-11-28 03:16:43,491 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:16:43,499 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:16:43,501 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:16:43,503 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:16:43,503 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:16:43,504 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6cdd28-faca-48aa-83cc-b01a9064eb2b/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/verifythis/tree_max_incorrect.c [2024-11-28 03:16:46,469 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6cdd28-faca-48aa-83cc-b01a9064eb2b/bin/uautomizer-verify-aQ6SnzHsRB/data/0cc6a42f7/c424c7b4a6904921ac7b0bea7b9293b7/FLAG891c2f9c4 [2024-11-28 03:16:46,739 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:16:46,740 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6cdd28-faca-48aa-83cc-b01a9064eb2b/sv-benchmarks/c/verifythis/tree_max_incorrect.c [2024-11-28 03:16:46,756 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6cdd28-faca-48aa-83cc-b01a9064eb2b/bin/uautomizer-verify-aQ6SnzHsRB/data/0cc6a42f7/c424c7b4a6904921ac7b0bea7b9293b7/FLAG891c2f9c4 [2024-11-28 03:16:47,040 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6cdd28-faca-48aa-83cc-b01a9064eb2b/bin/uautomizer-verify-aQ6SnzHsRB/data/0cc6a42f7/c424c7b4a6904921ac7b0bea7b9293b7 [2024-11-28 03:16:47,043 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:16:47,044 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:16:47,045 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:16:47,045 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:16:47,050 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:16:47,051 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:16:47" (1/1) ... [2024-11-28 03:16:47,052 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bcfa840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:47, skipping insertion in model container [2024-11-28 03:16:47,052 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:16:47" (1/1) ... [2024-11-28 03:16:47,067 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:16:47,217 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_af6cdd28-faca-48aa-83cc-b01a9064eb2b/sv-benchmarks/c/verifythis/tree_max_incorrect.c[466,479] [2024-11-28 03:16:47,247 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:16:47,259 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:16:47,272 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_af6cdd28-faca-48aa-83cc-b01a9064eb2b/sv-benchmarks/c/verifythis/tree_max_incorrect.c[466,479] [2024-11-28 03:16:47,285 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:16:47,308 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:16:47,308 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:47 WrapperNode [2024-11-28 03:16:47,310 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:16:47,311 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:16:47,312 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:16:47,312 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:16:47,326 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:47" (1/1) ... [2024-11-28 03:16:47,334 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:47" (1/1) ... [2024-11-28 03:16:47,354 INFO L138 Inliner]: procedures = 23, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 39 [2024-11-28 03:16:47,354 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:16:47,355 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:16:47,355 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:16:47,356 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:16:47,365 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:47" (1/1) ... [2024-11-28 03:16:47,365 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:47" (1/1) ... [2024-11-28 03:16:47,367 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:47" (1/1) ... [2024-11-28 03:16:47,381 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-28 03:16:47,382 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:47" (1/1) ... [2024-11-28 03:16:47,382 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:47" (1/1) ... [2024-11-28 03:16:47,389 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:47" (1/1) ... [2024-11-28 03:16:47,390 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:47" (1/1) ... [2024-11-28 03:16:47,392 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:47" (1/1) ... [2024-11-28 03:16:47,393 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:47" (1/1) ... [2024-11-28 03:16:47,394 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:47" (1/1) ... [2024-11-28 03:16:47,396 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:16:47,397 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:16:47,397 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:16:47,397 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:16:47,398 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:47" (1/1) ... [2024-11-28 03:16:47,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:16:47,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6cdd28-faca-48aa-83cc-b01a9064eb2b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:16:47,436 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6cdd28-faca-48aa-83cc-b01a9064eb2b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:16:47,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6cdd28-faca-48aa-83cc-b01a9064eb2b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:16:47,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 03:16:47,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 03:16:47,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:16:47,473 INFO L130 BoogieDeclarations]: Found specification of procedure max [2024-11-28 03:16:47,473 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2024-11-28 03:16:47,474 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2024-11-28 03:16:47,474 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2024-11-28 03:16:47,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:16:47,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 03:16:47,474 INFO L130 BoogieDeclarations]: Found specification of procedure check [2024-11-28 03:16:47,474 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2024-11-28 03:16:47,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 03:16:47,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 03:16:47,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 03:16:47,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 03:16:47,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 03:16:47,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:16:47,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:16:47,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 03:16:47,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 03:16:47,563 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:16:47,565 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:16:47,819 INFO L? ?]: Removed 26 outVars from TransFormulas that were not future-live. [2024-11-28 03:16:47,820 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:16:47,832 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:16:47,833 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 03:16:47,833 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:47 BoogieIcfgContainer [2024-11-28 03:16:47,834 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:16:47,837 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:16:47,837 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:16:47,843 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:16:47,843 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:16:47" (1/3) ... [2024-11-28 03:16:47,845 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bd8da07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:16:47, skipping insertion in model container [2024-11-28 03:16:47,845 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:47" (2/3) ... [2024-11-28 03:16:47,845 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bd8da07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:16:47, skipping insertion in model container [2024-11-28 03:16:47,845 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:47" (3/3) ... [2024-11-28 03:16:47,848 INFO L128 eAbstractionObserver]: Analyzing ICFG tree_max_incorrect.c [2024-11-28 03:16:47,863 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:16:47,865 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG tree_max_incorrect.c that has 4 procedures, 41 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-28 03:16:47,934 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:16:47,950 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;@9115ace, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:16:47,950 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:16:47,954 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 28 states have internal predecessors, (34), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-28 03:16:47,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-28 03:16:47,967 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:47,968 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:16:47,970 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting checkErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:16:47,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:47,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1678766983, now seen corresponding path program 1 times [2024-11-28 03:16:47,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:47,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859740999] [2024-11-28 03:16:47,986 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:47,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:48,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:48,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:16:48,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:16:48,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859740999] [2024-11-28 03:16:48,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859740999] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:16:48,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:16:48,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:16:48,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853097815] [2024-11-28 03:16:48,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:16:48,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:16:48,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:16:48,603 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:16:48,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:16:48,606 INFO L87 Difference]: Start difference. First operand has 41 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 28 states have internal predecessors, (34), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:16:48,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:48,732 INFO L93 Difference]: Finished difference Result 69 states and 91 transitions. [2024-11-28 03:16:48,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:16:48,735 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2024-11-28 03:16:48,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:16:48,741 INFO L225 Difference]: With dead ends: 69 [2024-11-28 03:16:48,741 INFO L226 Difference]: Without dead ends: 35 [2024-11-28 03:16:48,743 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:16:48,746 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 3 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:16:48,747 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 272 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:16:48,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-28 03:16:48,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-11-28 03:16:48,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 25 states have internal predecessors, (27), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-28 03:16:48,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2024-11-28 03:16:48,779 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 19 [2024-11-28 03:16:48,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:16:48,779 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2024-11-28 03:16:48,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:16:48,780 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2024-11-28 03:16:48,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-28 03:16:48,782 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:48,782 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:16:48,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:16:48,782 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting checkErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:16:48,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:48,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1642559178, now seen corresponding path program 1 times [2024-11-28 03:16:48,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:48,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539994486] [2024-11-28 03:16:48,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:48,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:48,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:49,087 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 03:16:49,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:16:49,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539994486] [2024-11-28 03:16:49,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539994486] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:16:49,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:16:49,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 03:16:49,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465277042] [2024-11-28 03:16:49,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:16:49,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:16:49,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:16:49,089 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:16:49,090 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:16:49,091 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 03:16:49,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:49,190 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2024-11-28 03:16:49,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:16:49,191 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 31 [2024-11-28 03:16:49,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:16:49,193 INFO L225 Difference]: With dead ends: 48 [2024-11-28 03:16:49,194 INFO L226 Difference]: Without dead ends: 37 [2024-11-28 03:16:49,194 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:16:49,197 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 2 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:16:49,197 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 229 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:16:49,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-28 03:16:49,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-28 03:16:49,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 27 states have internal predecessors, (28), 9 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2024-11-28 03:16:49,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2024-11-28 03:16:49,211 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 31 [2024-11-28 03:16:49,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:16:49,212 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions. [2024-11-28 03:16:49,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 03:16:49,212 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions. [2024-11-28 03:16:49,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-28 03:16:49,214 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:49,214 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:16:49,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:16:49,215 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting checkErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:16:49,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:49,219 INFO L85 PathProgramCache]: Analyzing trace with hash -207997582, now seen corresponding path program 1 times [2024-11-28 03:16:49,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:49,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401614761] [2024-11-28 03:16:49,219 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:49,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:16:49,290 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:16:49,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:16:49,356 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 03:16:49,357 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 03:16:49,358 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location checkErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-28 03:16:49,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:16:49,363 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-28 03:16:49,390 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 03:16:49,393 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:16:49 BoogieIcfgContainer [2024-11-28 03:16:49,393 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 03:16:49,394 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 03:16:49,394 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 03:16:49,394 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 03:16:49,395 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:47" (3/4) ... [2024-11-28 03:16:49,396 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-28 03:16:49,452 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 25. [2024-11-28 03:16:49,512 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6cdd28-faca-48aa-83cc-b01a9064eb2b/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 03:16:49,512 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6cdd28-faca-48aa-83cc-b01a9064eb2b/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 03:16:49,512 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 03:16:49,513 INFO L158 Benchmark]: Toolchain (without parser) took 2468.74ms. Allocated memory is still 117.4MB. Free memory was 94.1MB in the beginning and 88.2MB in the end (delta: 6.0MB). Peak memory consumption was 55.1MB. Max. memory is 16.1GB. [2024-11-28 03:16:49,513 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 167.8MB. Free memory is still 105.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:16:49,513 INFO L158 Benchmark]: CACSL2BoogieTranslator took 265.14ms. Allocated memory is still 117.4MB. Free memory was 94.1MB in the beginning and 82.9MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:16:49,513 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.74ms. Allocated memory is still 117.4MB. Free memory was 82.9MB in the beginning and 81.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:16:49,514 INFO L158 Benchmark]: Boogie Preprocessor took 40.95ms. Allocated memory is still 117.4MB. Free memory was 81.8MB in the beginning and 79.9MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:16:49,514 INFO L158 Benchmark]: RCFGBuilder took 437.62ms. Allocated memory is still 117.4MB. Free memory was 79.9MB in the beginning and 66.4MB in the end (delta: 13.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 03:16:49,514 INFO L158 Benchmark]: TraceAbstraction took 1556.40ms. Allocated memory is still 117.4MB. Free memory was 65.7MB in the beginning and 44.4MB in the end (delta: 21.2MB). Peak memory consumption was 20.3MB. Max. memory is 16.1GB. [2024-11-28 03:16:49,515 INFO L158 Benchmark]: Witness Printer took 118.10ms. Allocated memory is still 117.4MB. Free memory was 44.4MB in the beginning and 88.2MB in the end (delta: -43.7MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. [2024-11-28 03:16:49,516 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 167.8MB. Free memory is still 105.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 265.14ms. Allocated memory is still 117.4MB. Free memory was 94.1MB in the beginning and 82.9MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.74ms. Allocated memory is still 117.4MB. Free memory was 82.9MB in the beginning and 81.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 40.95ms. Allocated memory is still 117.4MB. Free memory was 81.8MB in the beginning and 79.9MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 437.62ms. Allocated memory is still 117.4MB. Free memory was 79.9MB in the beginning and 66.4MB in the end (delta: 13.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1556.40ms. Allocated memory is still 117.4MB. Free memory was 65.7MB in the beginning and 44.4MB in the end (delta: 21.2MB). Peak memory consumption was 20.3MB. Max. memory is 16.1GB. * Witness Printer took 118.10ms. Allocated memory is still 117.4MB. Free memory was 44.4MB in the beginning and 88.2MB in the end (delta: -43.7MB). Peak memory consumption was 9.7MB. 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: 11]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L60] CALL, EXPR nondet_tree() [L20] COND FALSE !(__VERIFIER_nondet_bool()) [L23] struct node *n = (struct node *)malloc(sizeof(struct node)); [L24] n->data = __VERIFIER_nondet_int() [L25] CALL, EXPR nondet_tree() [L20] COND TRUE __VERIFIER_nondet_bool() [L21] return 0; VAL [\result={0:0}] [L25] RET, EXPR nondet_tree() VAL [n={-1:0}] [L25] n->left = nondet_tree() [L26] CALL, EXPR nondet_tree() [L20] COND TRUE __VERIFIER_nondet_bool() [L21] return 0; VAL [\result={0:0}] [L26] RET, EXPR nondet_tree() VAL [n={-1:0}] [L26] n->right = nondet_tree() [L27] return n; VAL [\result={-1:0}] [L60] RET, EXPR nondet_tree() [L60] CALL task(nondet_tree()) [L55] CALL, EXPR max(n) VAL [\old(n)={-1:0}] [L32] COND FALSE !(!n) [L35] EXPR n->left VAL [\old(n)={-1:0}, n={-1:0}] [L35] CALL, EXPR max(n->left) VAL [\old(n)={0:0}] [L32] COND TRUE !n [L33] return -2147483648; VAL [\old(n)={0:0}, \result=-2147483648] [L35] RET, EXPR max(n->left) VAL [\old(n)={-1:0}, n={-1:0}] [L35] int a = max(n->left); [L36] EXPR n->right VAL [\old(n)={-1:0}, a=-2147483648] [L36] CALL, EXPR max(n->right) VAL [\old(n)={0:0}] [L32] COND TRUE !n [L33] return -2147483648; VAL [\old(n)={0:0}, \result=-2147483648] [L36] RET, EXPR max(n->right) VAL [\old(n)={-1:0}, a=-2147483648] [L36] int b = max(n->right); [L37] COND TRUE a >= b [L37] return a; VAL [\old(n)={-1:0}, \result=-2147483648] [L55] RET, EXPR max(n) VAL [n={-1:0}] [L55] int a = max(n); [L56] CALL check(n, a) [L43] COND TRUE \read(*n) [L44] EXPR n->data [L44] CALL __VERIFIER_assert(n->data <= a) [L11] COND TRUE !cond [L11] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.5s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 501 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 418 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 96 IncrementalHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 83 mSDtfsCounter, 96 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, InterpolantAutomatonStates: 15, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 126 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 12/12 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! [2024-11-28 03:16:49,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6cdd28-faca-48aa-83cc-b01a9064eb2b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE