./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 a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b949c6ee-3d45-442c-93a0-62f11d0c55f5/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b949c6ee-3d45-442c-93a0-62f11d0c55f5/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b949c6ee-3d45-442c-93a0-62f11d0c55f5/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b949c6ee-3d45-442c-93a0-62f11d0c55f5/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/verifythis/tree_max_incorrect.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b949c6ee-3d45-442c-93a0-62f11d0c55f5/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b949c6ee-3d45-442c-93a0-62f11d0c55f5/bin/utaipan-verify-YMUCfTKeje --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4f9d3bc4199d475d16a98f98af89b165bc24fe0a085f06600e60f95805b0186f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 06:36:22,827 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:36:22,947 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b949c6ee-3d45-442c-93a0-62f11d0c55f5/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 06:36:22,954 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:36:22,955 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:36:23,006 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:36:23,007 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:36:23,007 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:36:23,008 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:36:23,011 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:36:23,012 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 06:36:23,012 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 06:36:23,013 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 06:36:23,013 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 06:36:23,016 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 06:36:23,017 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 06:36:23,017 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 06:36:23,017 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 06:36:23,018 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 06:36:23,018 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 06:36:23,019 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 06:36:23,023 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 06:36:23,024 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:36:23,024 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 06:36:23,025 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 06:36:23,025 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 06:36:23,025 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 06:36:23,026 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:36:23,026 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 06:36:23,030 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:36:23,031 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 06:36:23,031 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:36:23,032 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 06:36:23,033 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 06:36:23,033 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:36:23,034 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:36:23,035 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 06:36:23,035 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:36:23,036 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:36:23,036 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:36:23,036 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:36:23,037 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 06:36:23,037 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 06:36:23,038 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 06:36:23,038 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:36:23,038 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 06:36:23,039 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 06:36:23,039 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b949c6ee-3d45-442c-93a0-62f11d0c55f5/bin/utaipan-verify-YMUCfTKeje/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b949c6ee-3d45-442c-93a0-62f11d0c55f5/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f9d3bc4199d475d16a98f98af89b165bc24fe0a085f06600e60f95805b0186f [2024-11-09 06:36:23,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:36:23,420 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:36:23,424 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:36:23,427 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:36:23,427 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:36:23,429 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b949c6ee-3d45-442c-93a0-62f11d0c55f5/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/verifythis/tree_max_incorrect.c Unable to find full path for "g++" [2024-11-09 06:36:25,890 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:36:26,220 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:36:26,221 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b949c6ee-3d45-442c-93a0-62f11d0c55f5/sv-benchmarks/c/verifythis/tree_max_incorrect.c [2024-11-09 06:36:26,230 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b949c6ee-3d45-442c-93a0-62f11d0c55f5/bin/utaipan-verify-YMUCfTKeje/data/a4e517dc3/40fbd6e528a44f5daef7bc3ad4912f0a/FLAG1e3fc316f [2024-11-09 06:36:26,252 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b949c6ee-3d45-442c-93a0-62f11d0c55f5/bin/utaipan-verify-YMUCfTKeje/data/a4e517dc3/40fbd6e528a44f5daef7bc3ad4912f0a [2024-11-09 06:36:26,254 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:36:26,256 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:36:26,258 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:36:26,258 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:36:26,266 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:36:26,267 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:36:26" (1/1) ... [2024-11-09 06:36:26,268 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@382f95ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:36:26, skipping insertion in model container [2024-11-09 06:36:26,268 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:36:26" (1/1) ... [2024-11-09 06:36:26,298 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:36:26,561 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_b949c6ee-3d45-442c-93a0-62f11d0c55f5/sv-benchmarks/c/verifythis/tree_max_incorrect.c[466,479] [2024-11-09 06:36:26,586 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:36:26,599 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 06:36:26,614 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_b949c6ee-3d45-442c-93a0-62f11d0c55f5/sv-benchmarks/c/verifythis/tree_max_incorrect.c[466,479] [2024-11-09 06:36:26,623 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:36:26,642 INFO L204 MainTranslator]: Completed translation [2024-11-09 06:36:26,642 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:36:26 WrapperNode [2024-11-09 06:36:26,643 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 06:36:26,644 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 06:36:26,644 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 06:36:26,644 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 06:36:26,653 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:36:26" (1/1) ... [2024-11-09 06:36:26,662 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:36:26" (1/1) ... [2024-11-09 06:36:26,682 INFO L138 Inliner]: procedures = 23, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 39 [2024-11-09 06:36:26,683 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 06:36:26,685 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 06:36:26,685 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 06:36:26,685 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 06:36:26,695 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:36:26" (1/1) ... [2024-11-09 06:36:26,695 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:36:26" (1/1) ... [2024-11-09 06:36:26,699 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:36:26" (1/1) ... [2024-11-09 06:36:26,699 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:36:26" (1/1) ... [2024-11-09 06:36:26,707 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:36:26" (1/1) ... [2024-11-09 06:36:26,709 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:36:26" (1/1) ... [2024-11-09 06:36:26,710 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:36:26" (1/1) ... [2024-11-09 06:36:26,711 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:36:26" (1/1) ... [2024-11-09 06:36:26,714 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 06:36:26,715 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 06:36:26,715 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 06:36:26,716 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 06:36:26,717 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:36:26" (1/1) ... [2024-11-09 06:36:26,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:36:26,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b949c6ee-3d45-442c-93a0-62f11d0c55f5/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:36:26,751 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b949c6ee-3d45-442c-93a0-62f11d0c55f5/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 06:36:26,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b949c6ee-3d45-442c-93a0-62f11d0c55f5/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 06:36:26,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 06:36:26,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 06:36:26,790 INFO L130 BoogieDeclarations]: Found specification of procedure max [2024-11-09 06:36:26,791 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2024-11-09 06:36:26,793 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2024-11-09 06:36:26,794 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2024-11-09 06:36:26,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 06:36:26,794 INFO L130 BoogieDeclarations]: Found specification of procedure check [2024-11-09 06:36:26,795 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2024-11-09 06:36:26,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-09 06:36:26,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 06:36:26,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 06:36:26,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 06:36:26,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 06:36:26,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 06:36:26,929 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 06:36:26,931 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 06:36:27,255 INFO L? ?]: Removed 26 outVars from TransFormulas that were not future-live. [2024-11-09 06:36:27,255 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 06:36:27,299 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 06:36:27,301 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 06:36:27,302 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:36:27 BoogieIcfgContainer [2024-11-09 06:36:27,303 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 06:36:27,306 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 06:36:27,307 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 06:36:27,310 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 06:36:27,312 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:36:26" (1/3) ... [2024-11-09 06:36:27,313 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cad6dd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:36:27, skipping insertion in model container [2024-11-09 06:36:27,313 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:36:26" (2/3) ... [2024-11-09 06:36:27,314 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cad6dd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:36:27, skipping insertion in model container [2024-11-09 06:36:27,314 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:36:27" (3/3) ... [2024-11-09 06:36:27,315 INFO L112 eAbstractionObserver]: Analyzing ICFG tree_max_incorrect.c [2024-11-09 06:36:27,334 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 06:36:27,334 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 06:36:27,402 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:36:27,411 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=FINITE_AUTOMATA, 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;@6549d779, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:36:27,412 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 06:36:27,417 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 24 states have internal predecessors, (29), 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) [2024-11-09 06:36:27,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-09 06:36:27,427 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:36:27,428 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:36:27,429 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting checkErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:36:27,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:36:27,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1414732467, now seen corresponding path program 1 times [2024-11-09 06:36:27,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:36:27,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683122464] [2024-11-09 06:36:27,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:36:27,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:36:27,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:36:28,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:36:28,261 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:36:28,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683122464] [2024-11-09 06:36:28,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683122464] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:36:28,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:36:28,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 06:36:28,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817089681] [2024-11-09 06:36:28,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:36:28,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:36:28,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:36:28,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:36:28,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:36:28,318 INFO L87 Difference]: Start difference. First operand has 37 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 24 states have internal predecessors, (29), 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 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 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) [2024-11-09 06:36:28,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:36:28,476 INFO L93 Difference]: Finished difference Result 63 states and 84 transitions. [2024-11-09 06:36:28,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 06:36:28,479 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 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 18 [2024-11-09 06:36:28,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:36:28,491 INFO L225 Difference]: With dead ends: 63 [2024-11-09 06:36:28,491 INFO L226 Difference]: Without dead ends: 33 [2024-11-09 06:36:28,495 INFO L431 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 [2024-11-09 06:36:28,500 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 3 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:36:28,502 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 228 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:36:28,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-09 06:36:28,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-11-09 06:36:28,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 20 states have (on average 1.2) internal successors, (24), 23 states have internal predecessors, (24), 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) [2024-11-09 06:36:28,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2024-11-09 06:36:28,569 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 18 [2024-11-09 06:36:28,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:36:28,569 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2024-11-09 06:36:28,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 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) [2024-11-09 06:36:28,570 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2024-11-09 06:36:28,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-09 06:36:28,576 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:36:28,576 INFO L215 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] [2024-11-09 06:36:28,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 06:36:28,577 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting checkErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:36:28,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:36:28,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1886933750, now seen corresponding path program 1 times [2024-11-09 06:36:28,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:36:28,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218116281] [2024-11-09 06:36:28,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:36:28,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:36:28,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:36:29,019 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 06:36:29,019 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:36:29,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218116281] [2024-11-09 06:36:29,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218116281] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:36:29,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:36:29,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 06:36:29,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661348396] [2024-11-09 06:36:29,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:36:29,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 06:36:29,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:36:29,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 06:36:29,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:36:29,028 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 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) [2024-11-09 06:36:29,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:36:29,184 INFO L93 Difference]: Finished difference Result 46 states and 57 transitions. [2024-11-09 06:36:29,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 06:36:29,187 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 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 30 [2024-11-09 06:36:29,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:36:29,189 INFO L225 Difference]: With dead ends: 46 [2024-11-09 06:36:29,189 INFO L226 Difference]: Without dead ends: 35 [2024-11-09 06:36:29,190 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:36:29,192 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 2 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:36:29,195 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 195 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:36:29,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-09 06:36:29,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-11-09 06:36:29,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 25 states have internal predecessors, (25), 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) [2024-11-09 06:36:29,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2024-11-09 06:36:29,215 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 30 [2024-11-09 06:36:29,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:36:29,216 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2024-11-09 06:36:29,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 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) [2024-11-09 06:36:29,217 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2024-11-09 06:36:29,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-09 06:36:29,219 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:36:29,219 INFO L215 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] [2024-11-09 06:36:29,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 06:36:29,220 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting checkErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:36:29,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:36:29,224 INFO L85 PathProgramCache]: Analyzing trace with hash 549091125, now seen corresponding path program 1 times [2024-11-09 06:36:29,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:36:29,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072851040] [2024-11-09 06:36:29,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:36:29,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:36:29,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 06:36:29,322 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 06:36:29,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 06:36:29,423 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-09 06:36:29,424 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 06:36:29,425 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location checkErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 06:36:29,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 06:36:29,435 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-09 06:36:29,487 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 06:36:29,495 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 06:36:29 BoogieIcfgContainer [2024-11-09 06:36:29,496 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 06:36:29,497 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 06:36:29,497 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 06:36:29,498 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 06:36:29,499 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:36:27" (3/4) ... [2024-11-09 06:36:29,502 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-09 06:36:29,565 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b949c6ee-3d45-442c-93a0-62f11d0c55f5/bin/utaipan-verify-YMUCfTKeje/witness.graphml [2024-11-09 06:36:29,566 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 06:36:29,567 INFO L158 Benchmark]: Toolchain (without parser) took 3310.62ms. Allocated memory is still 172.0MB. Free memory was 138.1MB in the beginning and 80.5MB in the end (delta: 57.7MB). Peak memory consumption was 57.7MB. Max. memory is 16.1GB. [2024-11-09 06:36:29,567 INFO L158 Benchmark]: CDTParser took 0.46ms. Allocated memory is still 172.0MB. Free memory was 124.7MB in the beginning and 124.3MB in the end (delta: 325.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 06:36:29,568 INFO L158 Benchmark]: CACSL2BoogieTranslator took 385.17ms. Allocated memory is still 172.0MB. Free memory was 138.1MB in the beginning and 125.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-09 06:36:29,569 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.54ms. Allocated memory is still 172.0MB. Free memory was 125.5MB in the beginning and 123.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 06:36:29,569 INFO L158 Benchmark]: Boogie Preprocessor took 29.71ms. Allocated memory is still 172.0MB. Free memory was 123.6MB in the beginning and 122.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 06:36:29,570 INFO L158 Benchmark]: RCFGBuilder took 587.80ms. Allocated memory is still 172.0MB. Free memory was 122.1MB in the beginning and 106.7MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-09 06:36:29,571 INFO L158 Benchmark]: TraceAbstraction took 2189.34ms. Allocated memory is still 172.0MB. Free memory was 106.3MB in the beginning and 82.6MB in the end (delta: 23.7MB). Peak memory consumption was 22.0MB. Max. memory is 16.1GB. [2024-11-09 06:36:29,571 INFO L158 Benchmark]: Witness Printer took 69.27ms. Allocated memory is still 172.0MB. Free memory was 82.6MB in the beginning and 80.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 06:36:29,575 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46ms. Allocated memory is still 172.0MB. Free memory was 124.7MB in the beginning and 124.3MB in the end (delta: 325.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 385.17ms. Allocated memory is still 172.0MB. Free memory was 138.1MB in the beginning and 125.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.54ms. Allocated memory is still 172.0MB. Free memory was 125.5MB in the beginning and 123.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.71ms. Allocated memory is still 172.0MB. Free memory was 123.6MB in the beginning and 122.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 587.80ms. Allocated memory is still 172.0MB. Free memory was 122.1MB in the beginning and 106.7MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2189.34ms. Allocated memory is still 172.0MB. Free memory was 106.3MB in the beginning and 82.6MB in the end (delta: 23.7MB). Peak memory consumption was 22.0MB. Max. memory is 16.1GB. * Witness Printer took 69.27ms. Allocated memory is still 172.0MB. Free memory was 82.6MB in the beginning and 80.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. 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, 37 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.1s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 423 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 353 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 123 IncrementalHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 70 mSDtfsCounter, 123 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=37occurred 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: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 124 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 RESULT: Ultimate proved your program to be incorrect! [2024-11-09 06:36:29,621 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b949c6ee-3d45-442c-93a0-62f11d0c55f5/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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