./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/sum_non_eq-3.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_a9c6b5d8-032d-4e60-a1e4-dd5096c935c4/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c6b5d8-032d-4e60-a1e4-dd5096c935c4/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_a9c6b5d8-032d-4e60-a1e4-dd5096c935c4/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c6b5d8-032d-4e60-a1e4-dd5096c935c4/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/sum_non_eq-3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c6b5d8-032d-4e60-a1e4-dd5096c935c4/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_a9c6b5d8-032d-4e60-a1e4-dd5096c935c4/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 41c9705134faa9e28eba566071c8a538a7da12abc5ccedccf4ff4ee4f7173585 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:56:57,108 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:56:57,241 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c6b5d8-032d-4e60-a1e4-dd5096c935c4/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 05:56:57,251 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:56:57,254 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:56:57,295 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:56:57,296 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:56:57,297 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:56:57,298 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:56:57,298 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:56:57,299 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:56:57,299 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:56:57,300 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:56:57,300 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:56:57,301 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:56:57,302 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:56:57,302 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:56:57,303 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:56:57,303 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:56:57,304 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:56:57,304 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:56:57,305 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:56:57,306 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:56:57,307 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:56:57,307 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:56:57,307 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:56:57,308 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:56:57,313 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:56:57,313 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:56:57,314 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:56:57,314 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:56:57,314 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:56:57,315 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:56:57,315 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:56:57,316 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:56:57,318 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:56:57,319 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:56:57,320 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:56:57,320 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:56:57,321 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:56:57,321 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:56:57,322 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:56:57,322 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:56:57,323 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:56:57,323 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:56:57,323 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:56:57,324 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:56:57,324 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_a9c6b5d8-032d-4e60-a1e4-dd5096c935c4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c6b5d8-032d-4e60-a1e4-dd5096c935c4/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41c9705134faa9e28eba566071c8a538a7da12abc5ccedccf4ff4ee4f7173585 [2024-11-09 05:56:57,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:56:57,687 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:56:57,690 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:56:57,692 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:56:57,694 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:56:57,696 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c6b5d8-032d-4e60-a1e4-dd5096c935c4/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/recursive-simple/sum_non_eq-3.c Unable to find full path for "g++" [2024-11-09 05:57:00,315 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:57:00,578 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:57:00,579 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c6b5d8-032d-4e60-a1e4-dd5096c935c4/sv-benchmarks/c/recursive-simple/sum_non_eq-3.c [2024-11-09 05:57:00,588 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c6b5d8-032d-4e60-a1e4-dd5096c935c4/bin/utaipan-verify-YMUCfTKeje/data/66113cecf/6a1d2f5a3e024aeba92e2b969445a3df/FLAGc1c02f47e [2024-11-09 05:57:00,605 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c6b5d8-032d-4e60-a1e4-dd5096c935c4/bin/utaipan-verify-YMUCfTKeje/data/66113cecf/6a1d2f5a3e024aeba92e2b969445a3df [2024-11-09 05:57:00,608 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:57:00,610 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:57:00,612 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:57:00,613 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:57:00,619 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:57:00,620 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:57:00" (1/1) ... [2024-11-09 05:57:00,621 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57b241f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:57:00, skipping insertion in model container [2024-11-09 05:57:00,621 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:57:00" (1/1) ... [2024-11-09 05:57:00,654 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:57:00,891 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_a9c6b5d8-032d-4e60-a1e4-dd5096c935c4/sv-benchmarks/c/recursive-simple/sum_non_eq-3.c[628,641] [2024-11-09 05:57:00,897 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:57:00,911 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:57:00,927 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_a9c6b5d8-032d-4e60-a1e4-dd5096c935c4/sv-benchmarks/c/recursive-simple/sum_non_eq-3.c[628,641] [2024-11-09 05:57:00,928 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:57:00,946 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:57:00,947 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:57:00 WrapperNode [2024-11-09 05:57:00,947 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:57:00,948 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:57:00,948 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:57:00,948 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:57:00,959 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:57:00" (1/1) ... [2024-11-09 05:57:00,968 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:57:00" (1/1) ... [2024-11-09 05:57:00,993 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2024-11-09 05:57:00,995 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:57:00,996 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:57:00,996 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:57:00,996 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:57:01,005 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:57:00" (1/1) ... [2024-11-09 05:57:01,005 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:57:00" (1/1) ... [2024-11-09 05:57:01,006 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:57:00" (1/1) ... [2024-11-09 05:57:01,006 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:57:00" (1/1) ... [2024-11-09 05:57:01,010 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:57:00" (1/1) ... [2024-11-09 05:57:01,012 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:57:00" (1/1) ... [2024-11-09 05:57:01,013 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:57:00" (1/1) ... [2024-11-09 05:57:01,014 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:57:00" (1/1) ... [2024-11-09 05:57:01,015 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:57:01,017 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:57:01,017 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:57:01,017 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:57:01,018 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:57:00" (1/1) ... [2024-11-09 05:57:01,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:57:01,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c6b5d8-032d-4e60-a1e4-dd5096c935c4/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:57:01,055 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c6b5d8-032d-4e60-a1e4-dd5096c935c4/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:57:01,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c6b5d8-032d-4e60-a1e4-dd5096c935c4/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:57:01,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:57:01,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:57:01,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:57:01,106 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2024-11-09 05:57:01,106 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2024-11-09 05:57:01,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:57:01,204 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:57:01,208 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:57:01,415 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-11-09 05:57:01,415 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:57:01,455 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:57:01,455 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 05:57:01,456 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:57:01 BoogieIcfgContainer [2024-11-09 05:57:01,457 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:57:01,462 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:57:01,463 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:57:01,468 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:57:01,468 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:57:00" (1/3) ... [2024-11-09 05:57:01,469 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ec9914 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:57:01, skipping insertion in model container [2024-11-09 05:57:01,469 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:57:00" (2/3) ... [2024-11-09 05:57:01,470 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ec9914 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:57:01, skipping insertion in model container [2024-11-09 05:57:01,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:57:01" (3/3) ... [2024-11-09 05:57:01,474 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_non_eq-3.c [2024-11-09 05:57:01,498 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:57:01,498 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:57:01,605 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:57:01,618 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;@164b522f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:57:01,618 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 05:57:01,624 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 05:57:01,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-09 05:57:01,636 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:57:01,637 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:57:01,638 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:57:01,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:57:01,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1493244868, now seen corresponding path program 1 times [2024-11-09 05:57:01,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:57:01,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210255531] [2024-11-09 05:57:01,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:57:01,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:57:01,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 05:57:01,837 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 05:57:01,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 05:57:01,914 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-09 05:57:01,916 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 05:57:01,918 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 05:57:01,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:57:01,928 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-09 05:57:01,958 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 05:57:01,962 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 05:57:01 BoogieIcfgContainer [2024-11-09 05:57:01,962 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 05:57:01,965 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 05:57:01,966 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 05:57:01,966 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 05:57:01,967 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:57:01" (3/4) ... [2024-11-09 05:57:01,969 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-09 05:57:02,032 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c6b5d8-032d-4e60-a1e4-dd5096c935c4/bin/utaipan-verify-YMUCfTKeje/witness.graphml [2024-11-09 05:57:02,032 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 05:57:02,034 INFO L158 Benchmark]: Toolchain (without parser) took 1423.27ms. Allocated memory is still 184.5MB. Free memory was 153.7MB in the beginning and 112.0MB in the end (delta: 41.7MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2024-11-09 05:57:02,038 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 117.4MB. Free memory is still 62.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 05:57:02,039 INFO L158 Benchmark]: CACSL2BoogieTranslator took 334.89ms. Allocated memory is still 184.5MB. Free memory was 153.7MB in the beginning and 141.3MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-09 05:57:02,039 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.21ms. Allocated memory is still 184.5MB. Free memory was 141.3MB in the beginning and 140.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 05:57:02,040 INFO L158 Benchmark]: Boogie Preprocessor took 19.83ms. Allocated memory is still 184.5MB. Free memory was 140.1MB in the beginning and 139.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 05:57:02,041 INFO L158 Benchmark]: RCFGBuilder took 440.36ms. Allocated memory is still 184.5MB. Free memory was 139.0MB in the beginning and 128.8MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-09 05:57:02,042 INFO L158 Benchmark]: TraceAbstraction took 500.52ms. Allocated memory is still 184.5MB. Free memory was 127.6MB in the beginning and 113.8MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-09 05:57:02,042 INFO L158 Benchmark]: Witness Printer took 66.98ms. Allocated memory is still 184.5MB. Free memory was 113.8MB in the beginning and 112.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 05:57:02,050 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 117.4MB. Free memory is still 62.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 334.89ms. Allocated memory is still 184.5MB. Free memory was 153.7MB in the beginning and 141.3MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.21ms. Allocated memory is still 184.5MB. Free memory was 141.3MB in the beginning and 140.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.83ms. Allocated memory is still 184.5MB. Free memory was 140.1MB in the beginning and 139.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 440.36ms. Allocated memory is still 184.5MB. Free memory was 139.0MB in the beginning and 128.8MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 500.52ms. Allocated memory is still 184.5MB. Free memory was 127.6MB in the beginning and 113.8MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 66.98ms. Allocated memory is still 184.5MB. Free memory was 113.8MB in the beginning and 112.0MB in the end (delta: 1.8MB). 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: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L15] unsigned int a = __VERIFIER_nondet_uint(); [L16] unsigned int b = __VERIFIER_nondet_uint(); [L17] CALL, EXPR sum(a, b) VAL [\old(m)=0, \old(n)=0] [L7] COND TRUE n == 0 [L8] return m; VAL [\old(m)=0, \old(n)=0, \result=0] [L17] RET, EXPR sum(a, b) VAL [a=0, b=0] [L17] unsigned int result = sum(a, b); [L18] COND TRUE result == a + b [L19] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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 05:57:02,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c6b5d8-032d-4e60-a1e4-dd5096c935c4/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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