./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_6305b4c3-8d15-4012-8e7e-3542c305ba10/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6305b4c3-8d15-4012-8e7e-3542c305ba10/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6305b4c3-8d15-4012-8e7e-3542c305ba10/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6305b4c3-8d15-4012-8e7e-3542c305ba10/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6305b4c3-8d15-4012-8e7e-3542c305ba10/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6305b4c3-8d15-4012-8e7e-3542c305ba10/bin/utaipan-verify-t7M7D8N6sZ --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 64bit --witnessprinter.graph.data.programhash d1800e6a7093aef170e24bf50f0eb7e2646af9a10c241229886d0a1c02e7e0dd --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:17:34,448 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:17:34,571 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6305b4c3-8d15-4012-8e7e-3542c305ba10/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-19 05:17:34,585 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:17:34,586 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:17:34,638 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:17:34,639 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:17:34,640 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:17:34,641 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:17:34,642 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:17:34,642 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:17:34,643 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:17:34,644 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:17:34,644 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:17:34,645 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:17:34,646 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:17:34,646 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:17:34,647 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:17:34,648 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:17:34,648 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:17:34,649 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:17:34,650 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:17:34,651 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:17:34,652 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:17:34,652 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:17:34,653 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:17:34,653 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:17:34,654 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:17:34,655 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:17:34,655 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:17:34,656 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:17:34,656 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:17:34,657 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:17:34,657 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:17:34,658 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:17:34,659 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:17:34,659 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:17:34,660 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:17:34,660 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:17:34,661 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:17:34,661 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:17:34,662 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:17:34,662 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_6305b4c3-8d15-4012-8e7e-3542c305ba10/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6305b4c3-8d15-4012-8e7e-3542c305ba10/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d1800e6a7093aef170e24bf50f0eb7e2646af9a10c241229886d0a1c02e7e0dd [2023-11-19 05:17:34,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:17:35,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:17:35,003 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:17:35,005 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:17:35,005 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:17:35,007 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6305b4c3-8d15-4012-8e7e-3542c305ba10/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i [2023-11-19 05:17:38,287 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:17:38,945 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:17:38,947 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6305b4c3-8d15-4012-8e7e-3542c305ba10/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i [2023-11-19 05:17:38,997 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6305b4c3-8d15-4012-8e7e-3542c305ba10/bin/utaipan-verify-t7M7D8N6sZ/data/24b3f28d0/7faaf09958dd471588ab9ea19081224f/FLAG4b6054bb7 [2023-11-19 05:17:39,014 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6305b4c3-8d15-4012-8e7e-3542c305ba10/bin/utaipan-verify-t7M7D8N6sZ/data/24b3f28d0/7faaf09958dd471588ab9ea19081224f [2023-11-19 05:17:39,017 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:17:39,019 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:17:39,020 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:17:39,021 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:17:39,027 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:17:39,028 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:17:39" (1/1) ... [2023-11-19 05:17:39,029 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77cde941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:17:39, skipping insertion in model container [2023-11-19 05:17:39,029 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:17:39" (1/1) ... [2023-11-19 05:17:39,159 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:17:41,617 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_6305b4c3-8d15-4012-8e7e-3542c305ba10/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[113333,113346] [2023-11-19 05:17:41,664 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_6305b4c3-8d15-4012-8e7e-3542c305ba10/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[118515,118528] [2023-11-19 05:17:41,687 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_6305b4c3-8d15-4012-8e7e-3542c305ba10/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[123107,123120] [2023-11-19 05:17:41,689 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_6305b4c3-8d15-4012-8e7e-3542c305ba10/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[123299,123312] [2023-11-19 05:17:41,749 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_6305b4c3-8d15-4012-8e7e-3542c305ba10/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[132997,133010] [2023-11-19 05:17:41,828 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_6305b4c3-8d15-4012-8e7e-3542c305ba10/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[152634,152647] [2023-11-19 05:17:41,895 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_6305b4c3-8d15-4012-8e7e-3542c305ba10/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[171907,171920] [2023-11-19 05:17:41,896 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_6305b4c3-8d15-4012-8e7e-3542c305ba10/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[172024,172037] [2023-11-19 05:17:41,997 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:17:42,056 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:17:42,152 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_6305b4c3-8d15-4012-8e7e-3542c305ba10/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[113333,113346] [2023-11-19 05:17:42,182 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_6305b4c3-8d15-4012-8e7e-3542c305ba10/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[118515,118528] [2023-11-19 05:17:42,202 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_6305b4c3-8d15-4012-8e7e-3542c305ba10/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[123107,123120] [2023-11-19 05:17:42,209 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_6305b4c3-8d15-4012-8e7e-3542c305ba10/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[123299,123312] [2023-11-19 05:17:42,227 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_6305b4c3-8d15-4012-8e7e-3542c305ba10/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[132997,133010] [2023-11-19 05:17:42,307 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_6305b4c3-8d15-4012-8e7e-3542c305ba10/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[152634,152647] [2023-11-19 05:17:42,368 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_6305b4c3-8d15-4012-8e7e-3542c305ba10/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[171907,171920] [2023-11-19 05:17:42,369 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_6305b4c3-8d15-4012-8e7e-3542c305ba10/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[172024,172037] [2023-11-19 05:17:42,428 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:17:42,759 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:17:42,759 WARN L675 CHandler]: The function x2x_utoa is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:17:42,760 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:17:42,760 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:17:42,760 WARN L675 CHandler]: The function strncmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:17:42,760 WARN L675 CHandler]: The function strstr is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:17:42,761 WARN L675 CHandler]: The function strrchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:17:42,761 WARN L675 CHandler]: The function putchar is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:17:42,761 WARN L675 CHandler]: The function strncpy is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:17:42,761 WARN L675 CHandler]: The function fputs is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:17:42,761 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:17:42,761 WARN L675 CHandler]: The function ctime is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:17:42,762 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:17:42,770 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:17:42,771 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:17:42 WrapperNode [2023-11-19 05:17:42,771 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:17:42,773 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:17:42,774 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:17:42,774 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:17:42,781 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:17:42" (1/1) ... [2023-11-19 05:17:42,903 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:17:42" (1/1) ... [2023-11-19 05:17:43,091 INFO L138 Inliner]: procedures = 743, calls = 1277, calls flagged for inlining = 67, calls inlined = 65, statements flattened = 4535 [2023-11-19 05:17:43,092 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:17:43,093 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:17:43,093 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:17:43,093 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:17:43,103 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:17:42" (1/1) ... [2023-11-19 05:17:43,103 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:17:42" (1/1) ... [2023-11-19 05:17:43,143 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:17:42" (1/1) ... [2023-11-19 05:17:43,143 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:17:42" (1/1) ... [2023-11-19 05:17:43,259 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:17:42" (1/1) ... [2023-11-19 05:17:43,289 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:17:42" (1/1) ... [2023-11-19 05:17:43,318 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:17:42" (1/1) ... [2023-11-19 05:17:43,339 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:17:42" (1/1) ... [2023-11-19 05:17:43,368 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:17:43,369 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:17:43,369 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:17:43,369 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:17:43,370 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:17:42" (1/1) ... [2023-11-19 05:17:43,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:17:43,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6305b4c3-8d15-4012-8e7e-3542c305ba10/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:17:43,411 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6305b4c3-8d15-4012-8e7e-3542c305ba10/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:17:43,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6305b4c3-8d15-4012-8e7e-3542c305ba10/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:17:43,464 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2023-11-19 05:17:43,465 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2023-11-19 05:17:43,465 INFO L130 BoogieDeclarations]: Found specification of procedure ctime [2023-11-19 05:17:43,465 INFO L130 BoogieDeclarations]: Found specification of procedure get_cached [2023-11-19 05:17:43,467 INFO L138 BoogieDeclarations]: Found implementation of procedure get_cached [2023-11-19 05:17:43,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc [2023-11-19 05:17:43,468 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc [2023-11-19 05:17:43,468 INFO L130 BoogieDeclarations]: Found specification of procedure vasprintf [2023-11-19 05:17:43,468 INFO L138 BoogieDeclarations]: Found implementation of procedure vasprintf [2023-11-19 05:17:43,468 INFO L130 BoogieDeclarations]: Found specification of procedure utoa [2023-11-19 05:17:43,469 INFO L138 BoogieDeclarations]: Found implementation of procedure utoa [2023-11-19 05:17:43,469 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-19 05:17:43,469 INFO L130 BoogieDeclarations]: Found specification of procedure print_name [2023-11-19 05:17:43,469 INFO L138 BoogieDeclarations]: Found implementation of procedure print_name [2023-11-19 05:17:43,469 INFO L130 BoogieDeclarations]: Found specification of procedure xrealloc [2023-11-19 05:17:43,469 INFO L138 BoogieDeclarations]: Found implementation of procedure xrealloc [2023-11-19 05:17:43,470 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-19 05:17:43,470 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2023-11-19 05:17:43,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:17:43,470 INFO L130 BoogieDeclarations]: Found specification of procedure xzalloc [2023-11-19 05:17:43,470 INFO L138 BoogieDeclarations]: Found implementation of procedure xzalloc [2023-11-19 05:17:43,470 INFO L130 BoogieDeclarations]: Found specification of procedure count_dirs [2023-11-19 05:17:43,471 INFO L138 BoogieDeclarations]: Found implementation of procedure count_dirs [2023-11-19 05:17:43,471 INFO L130 BoogieDeclarations]: Found specification of procedure my_stat [2023-11-19 05:17:43,471 INFO L138 BoogieDeclarations]: Found implementation of procedure my_stat [2023-11-19 05:17:43,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 05:17:43,471 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-19 05:17:43,471 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-19 05:17:43,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 05:17:43,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:17:43,472 INFO L130 BoogieDeclarations]: Found specification of procedure dfree [2023-11-19 05:17:43,472 INFO L138 BoogieDeclarations]: Found implementation of procedure dfree [2023-11-19 05:17:43,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:17:43,472 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2023-11-19 05:17:43,473 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-19 05:17:43,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:17:43,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:17:43,474 INFO L130 BoogieDeclarations]: Found specification of procedure dnsort [2023-11-19 05:17:43,475 INFO L138 BoogieDeclarations]: Found implementation of procedure dnsort [2023-11-19 05:17:43,475 INFO L130 BoogieDeclarations]: Found specification of procedure printable_string [2023-11-19 05:17:43,476 INFO L138 BoogieDeclarations]: Found implementation of procedure printable_string [2023-11-19 05:17:43,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:17:43,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:17:43,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-19 05:17:43,476 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-19 05:17:43,476 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2023-11-19 05:17:43,477 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2023-11-19 05:17:43,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 05:17:43,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 05:17:43,477 INFO L130 BoogieDeclarations]: Found specification of procedure bb_simple_perror_msg [2023-11-19 05:17:43,478 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_simple_perror_msg [2023-11-19 05:17:43,478 INFO L130 BoogieDeclarations]: Found specification of procedure get_cached_groupname [2023-11-19 05:17:43,479 INFO L138 BoogieDeclarations]: Found implementation of procedure get_cached_groupname [2023-11-19 05:17:43,479 INFO L130 BoogieDeclarations]: Found specification of procedure sort_and_display_files [2023-11-19 05:17:43,479 INFO L138 BoogieDeclarations]: Found implementation of procedure sort_and_display_files [2023-11-19 05:17:43,479 INFO L130 BoogieDeclarations]: Found specification of procedure stat [2023-11-19 05:17:43,479 INFO L138 BoogieDeclarations]: Found implementation of procedure stat [2023-11-19 05:17:43,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 05:17:43,480 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 05:17:43,480 INFO L130 BoogieDeclarations]: Found specification of procedure fgcolor [2023-11-19 05:17:43,481 INFO L138 BoogieDeclarations]: Found implementation of procedure fgcolor [2023-11-19 05:17:43,481 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 05:17:43,482 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 05:17:43,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:17:43,482 INFO L130 BoogieDeclarations]: Found specification of procedure splitdnarray [2023-11-19 05:17:43,482 INFO L138 BoogieDeclarations]: Found implementation of procedure splitdnarray [2023-11-19 05:17:43,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:17:43,483 INFO L130 BoogieDeclarations]: Found specification of procedure bold [2023-11-19 05:17:43,483 INFO L138 BoogieDeclarations]: Found implementation of procedure bold [2023-11-19 05:17:43,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 05:17:43,484 INFO L130 BoogieDeclarations]: Found specification of procedure append_char [2023-11-19 05:17:43,484 INFO L138 BoogieDeclarations]: Found implementation of procedure append_char [2023-11-19 05:17:43,484 INFO L130 BoogieDeclarations]: Found specification of procedure scan_and_display_dirs_recur [2023-11-19 05:17:43,484 INFO L138 BoogieDeclarations]: Found implementation of procedure scan_and_display_dirs_recur [2023-11-19 05:17:43,484 INFO L130 BoogieDeclarations]: Found specification of procedure lstat [2023-11-19 05:17:43,485 INFO L138 BoogieDeclarations]: Found implementation of procedure lstat [2023-11-19 05:17:43,485 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 05:17:43,485 INFO L130 BoogieDeclarations]: Found specification of procedure wh_helper [2023-11-19 05:17:43,485 INFO L138 BoogieDeclarations]: Found implementation of procedure wh_helper [2023-11-19 05:17:43,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:17:43,485 INFO L130 BoogieDeclarations]: Found specification of procedure bb_perror_msg [2023-11-19 05:17:43,486 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_perror_msg [2023-11-19 05:17:43,486 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2023-11-19 05:17:43,486 INFO L130 BoogieDeclarations]: Found specification of procedure isatty [2023-11-19 05:17:43,487 INFO L138 BoogieDeclarations]: Found implementation of procedure isatty [2023-11-19 05:17:43,487 INFO L130 BoogieDeclarations]: Found specification of procedure dnalloc [2023-11-19 05:17:43,487 INFO L138 BoogieDeclarations]: Found implementation of procedure dnalloc [2023-11-19 05:17:43,487 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-19 05:17:43,487 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-19 05:17:43,487 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-19 05:17:43,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:17:43,488 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2023-11-19 05:17:44,423 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:17:44,426 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:17:49,666 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:17:52,930 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:17:52,930 INFO L302 CfgBuilder]: Removed 66 assume(true) statements. [2023-11-19 05:17:52,953 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:17:52 BoogieIcfgContainer [2023-11-19 05:17:52,953 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:17:52,957 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:17:52,957 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:17:52,961 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:17:52,961 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:17:39" (1/3) ... [2023-11-19 05:17:52,964 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@368e0953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:17:52, skipping insertion in model container [2023-11-19 05:17:52,965 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:17:42" (2/3) ... [2023-11-19 05:17:52,965 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@368e0953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:17:52, skipping insertion in model container [2023-11-19 05:17:52,966 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:17:52" (3/3) ... [2023-11-19 05:17:52,967 INFO L112 eAbstractionObserver]: Analyzing ICFG ls-incomplete-2.i [2023-11-19 05:17:52,994 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:17:52,994 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-19 05:17:53,113 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:17:53,128 INFO L357 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, mHoare=true, 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;@5dbb5279, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:17:53,128 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-19 05:17:53,141 INFO L276 IsEmpty]: Start isEmpty. Operand has 743 states, 607 states have (on average 1.5354200988467874) internal successors, (932), 616 states have internal predecessors, (932), 98 states have call successors, (98), 32 states have call predecessors, (98), 32 states have return successors, (98), 97 states have call predecessors, (98), 98 states have call successors, (98) [2023-11-19 05:17:53,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-19 05:17:53,166 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:17:53,167 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:17:53,168 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [boldErr0ASSERT_VIOLATIONERROR_FUNCTION, sort_and_display_filesErr0ASSERT_VIOLATIONERROR_FUNCTION, sort_and_display_filesErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-19 05:17:53,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:17:53,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1359822004, now seen corresponding path program 1 times [2023-11-19 05:17:53,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:17:53,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958298652] [2023-11-19 05:17:53,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:17:53,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:17:53,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:17:54,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:17:54,465 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:17:54,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958298652] [2023-11-19 05:17:54,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958298652] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:17:54,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:17:54,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:17:54,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896318881] [2023-11-19 05:17:54,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:17:54,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:17:54,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:17:54,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:17:54,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:17:54,543 INFO L87 Difference]: Start difference. First operand has 743 states, 607 states have (on average 1.5354200988467874) internal successors, (932), 616 states have internal predecessors, (932), 98 states have call successors, (98), 32 states have call predecessors, (98), 32 states have return successors, (98), 97 states have call predecessors, (98), 98 states have call successors, (98) Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:17:57,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:17:59,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:17:59,115 INFO L93 Difference]: Finished difference Result 1470 states and 2299 transitions. [2023-11-19 05:17:59,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:17:59,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 41 [2023-11-19 05:17:59,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:17:59,147 INFO L225 Difference]: With dead ends: 1470 [2023-11-19 05:17:59,148 INFO L226 Difference]: Without dead ends: 711 [2023-11-19 05:17:59,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:17:59,174 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 0 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:17:59,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1706 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-11-19 05:17:59,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2023-11-19 05:17:59,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 711. [2023-11-19 05:17:59,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 589 states have (on average 1.4142614601018675) internal successors, (833), 595 states have internal predecessors, (833), 88 states have call successors, (88), 31 states have call predecessors, (88), 31 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2023-11-19 05:17:59,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 1007 transitions. [2023-11-19 05:17:59,324 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 1007 transitions. Word has length 41 [2023-11-19 05:17:59,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:17:59,324 INFO L495 AbstractCegarLoop]: Abstraction has 711 states and 1007 transitions. [2023-11-19 05:17:59,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:17:59,325 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 1007 transitions. [2023-11-19 05:17:59,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-19 05:17:59,330 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:17:59,330 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:17:59,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:17:59,331 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [boldErr0ASSERT_VIOLATIONERROR_FUNCTION, sort_and_display_filesErr0ASSERT_VIOLATIONERROR_FUNCTION, sort_and_display_filesErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-19 05:17:59,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:17:59,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1064226127, now seen corresponding path program 1 times [2023-11-19 05:17:59,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:17:59,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107215015] [2023-11-19 05:17:59,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:17:59,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:17:59,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:17:59,938 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 05:17:59,938 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:17:59,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107215015] [2023-11-19 05:17:59,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107215015] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:17:59,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99279789] [2023-11-19 05:17:59,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:17:59,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:17:59,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6305b4c3-8d15-4012-8e7e-3542c305ba10/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:17:59,946 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6305b4c3-8d15-4012-8e7e-3542c305ba10/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:17:59,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6305b4c3-8d15-4012-8e7e-3542c305ba10/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:18:01,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:18:01,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 1629 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:18:01,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:18:01,238 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 05:18:01,239 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:18:01,288 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 05:18:01,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99279789] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:18:01,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1733966897] [2023-11-19 05:18:01,315 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2023-11-19 05:18:01,315 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:18:01,319 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:18:01,325 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:18:01,326 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs