./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem18_label10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c089d-196d-449c-90a8-ba4eb89e5d40/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c089d-196d-449c-90a8-ba4eb89e5d40/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c089d-196d-449c-90a8-ba4eb89e5d40/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c089d-196d-449c-90a8-ba4eb89e5d40/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem18_label10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c089d-196d-449c-90a8-ba4eb89e5d40/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c089d-196d-449c-90a8-ba4eb89e5d40/bin/utaipan-verify-mE87zJ7Ire --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 c88f0048b6e3f16e3064641eeb61720e8ffc398aaa06b34533fd59b3d3fd0a1f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:37:00,711 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:37:00,782 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c089d-196d-449c-90a8-ba4eb89e5d40/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 20:37:00,789 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:37:00,790 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:37:00,815 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:37:00,816 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:37:00,817 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:37:00,818 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:37:00,819 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:37:00,819 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:37:00,820 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:37:00,821 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:37:00,822 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:37:00,822 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:37:00,823 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:37:00,824 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:37:00,824 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:37:00,825 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:37:00,825 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:37:00,826 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:37:00,827 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:37:00,828 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:37:00,828 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:37:00,829 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:37:00,829 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:37:00,830 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:37:00,830 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:37:00,831 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:37:00,831 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:37:00,832 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:37:00,833 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:37:00,833 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:37:00,833 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:37:00,834 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:37:00,835 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:37:00,835 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:37:00,836 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:37:00,836 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:37:00,837 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:37:00,837 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:37:00,838 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:37:00,838 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:37:00,839 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:37:00,839 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:37:00,840 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:37:00,840 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:37:00,841 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_ab0c089d-196d-449c-90a8-ba4eb89e5d40/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c089d-196d-449c-90a8-ba4eb89e5d40/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c88f0048b6e3f16e3064641eeb61720e8ffc398aaa06b34533fd59b3d3fd0a1f [2023-11-23 20:37:01,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:37:01,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:37:01,154 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:37:01,156 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:37:01,157 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:37:01,158 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c089d-196d-449c-90a8-ba4eb89e5d40/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/eca-rers2012/Problem18_label10.c [2023-11-23 20:37:04,301 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:37:04,828 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:37:04,829 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c089d-196d-449c-90a8-ba4eb89e5d40/sv-benchmarks/c/eca-rers2012/Problem18_label10.c [2023-11-23 20:37:04,857 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c089d-196d-449c-90a8-ba4eb89e5d40/bin/utaipan-verify-mE87zJ7Ire/data/038fc94ea/109ffffd043348a3a6477d690d0bd24b/FLAG18eaccdff [2023-11-23 20:37:04,873 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c089d-196d-449c-90a8-ba4eb89e5d40/bin/utaipan-verify-mE87zJ7Ire/data/038fc94ea/109ffffd043348a3a6477d690d0bd24b [2023-11-23 20:37:04,880 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:37:04,884 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:37:04,888 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:37:04,888 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:37:04,894 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:37:04,898 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:37:04" (1/1) ... [2023-11-23 20:37:04,899 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b67af1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:04, skipping insertion in model container [2023-11-23 20:37:04,900 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:37:04" (1/1) ... [2023-11-23 20:37:05,051 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:37:05,331 WARN L240 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_ab0c089d-196d-449c-90a8-ba4eb89e5d40/sv-benchmarks/c/eca-rers2012/Problem18_label10.c[2213,2226] [2023-11-23 20:37:06,315 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:37:06,327 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:37:06,357 WARN L240 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_ab0c089d-196d-449c-90a8-ba4eb89e5d40/sv-benchmarks/c/eca-rers2012/Problem18_label10.c[2213,2226] [2023-11-23 20:37:06,818 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:37:06,846 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:37:06,846 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:06 WrapperNode [2023-11-23 20:37:06,847 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:37:06,848 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:37:06,849 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:37:06,849 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:37:06,879 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:06" (1/1) ... [2023-11-23 20:37:06,969 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:06" (1/1) ... [2023-11-23 20:37:07,138 INFO L138 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 4133 [2023-11-23 20:37:07,138 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:37:07,139 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:37:07,139 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:37:07,140 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:37:07,150 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:06" (1/1) ... [2023-11-23 20:37:07,150 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:06" (1/1) ... [2023-11-23 20:37:07,176 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:06" (1/1) ... [2023-11-23 20:37:07,176 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:06" (1/1) ... [2023-11-23 20:37:07,265 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:06" (1/1) ... [2023-11-23 20:37:07,310 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:06" (1/1) ... [2023-11-23 20:37:07,325 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:06" (1/1) ... [2023-11-23 20:37:07,339 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:06" (1/1) ... [2023-11-23 20:37:07,474 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:37:07,489 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:37:07,489 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:37:07,489 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:37:07,490 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:06" (1/1) ... [2023-11-23 20:37:07,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:37:07,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c089d-196d-449c-90a8-ba4eb89e5d40/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:37:07,526 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c089d-196d-449c-90a8-ba4eb89e5d40/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:37:07,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c089d-196d-449c-90a8-ba4eb89e5d40/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:37:07,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:37:07,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:37:07,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:37:07,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:37:07,662 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:37:07,664 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:37:12,042 INFO L282 CfgBuilder]: Performing block encoding