./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 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_df2bf0f0-42e3-4971-8332-b7706028bf6d/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df2bf0f0-42e3-4971-8332-b7706028bf6d/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_df2bf0f0-42e3-4971-8332-b7706028bf6d/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df2bf0f0-42e3-4971-8332-b7706028bf6d/bin/utaipan-verify-mE87zJ7Ire/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_df2bf0f0-42e3-4971-8332-b7706028bf6d/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df2bf0f0-42e3-4971-8332-b7706028bf6d/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 64bit --witnessprinter.graph.data.programhash d1800e6a7093aef170e24bf50f0eb7e2646af9a10c241229886d0a1c02e7e0dd --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:26:49,779 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:26:49,921 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df2bf0f0-42e3-4971-8332-b7706028bf6d/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:26:49,931 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:26:49,932 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:26:49,974 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:26:49,975 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:26:49,976 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:26:49,977 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:26:49,983 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:26:49,984 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:26:49,986 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:26:49,986 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:26:49,988 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:26:49,989 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:26:49,990 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:26:49,990 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:26:49,991 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:26:49,991 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:26:49,992 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:26:49,993 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:26:49,994 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:26:49,995 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:26:49,996 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:26:49,997 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:26:49,997 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:26:49,998 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:26:49,998 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:26:49,999 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:26:49,999 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:26:50,001 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:26:50,002 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:26:50,002 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:26:50,002 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:26:50,003 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:26:50,003 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:26:50,004 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:26:50,004 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:26:50,005 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:26:50,005 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:26:50,005 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:26:50,006 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:26:50,006 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:26:50,007 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:26:50,008 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_df2bf0f0-42e3-4971-8332-b7706028bf6d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df2bf0f0-42e3-4971-8332-b7706028bf6d/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d1800e6a7093aef170e24bf50f0eb7e2646af9a10c241229886d0a1c02e7e0dd [2023-11-23 21:26:50,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:26:50,384 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:26:50,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:26:50,389 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:26:50,390 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:26:50,391 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df2bf0f0-42e3-4971-8332-b7706028bf6d/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i [2023-11-23 21:26:54,024 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:26:54,665 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:26:54,666 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df2bf0f0-42e3-4971-8332-b7706028bf6d/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i [2023-11-23 21:26:54,726 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df2bf0f0-42e3-4971-8332-b7706028bf6d/bin/utaipan-verify-mE87zJ7Ire/data/c89dd94fd/67d4d271c18641eab20a4a263f3289dd/FLAGf44237b57 [2023-11-23 21:26:54,747 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df2bf0f0-42e3-4971-8332-b7706028bf6d/bin/utaipan-verify-mE87zJ7Ire/data/c89dd94fd/67d4d271c18641eab20a4a263f3289dd [2023-11-23 21:26:54,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:26:54,757 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:26:54,763 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:26:54,764 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:26:54,771 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:26:54,772 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:26:54" (1/1) ... [2023-11-23 21:26:54,773 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e35565e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:26:54, skipping insertion in model container [2023-11-23 21:26:54,774 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:26:54" (1/1) ... [2023-11-23 21:26:54,987 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:26:57,409 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_df2bf0f0-42e3-4971-8332-b7706028bf6d/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[113333,113346] [2023-11-23 21:26:57,472 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_df2bf0f0-42e3-4971-8332-b7706028bf6d/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[118515,118528] [2023-11-23 21:26:57,515 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_df2bf0f0-42e3-4971-8332-b7706028bf6d/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[123107,123120] [2023-11-23 21:26:57,517 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_df2bf0f0-42e3-4971-8332-b7706028bf6d/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[123299,123312] [2023-11-23 21:26:57,583 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_df2bf0f0-42e3-4971-8332-b7706028bf6d/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[132997,133010] [2023-11-23 21:26:57,694 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_df2bf0f0-42e3-4971-8332-b7706028bf6d/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[152634,152647] [2023-11-23 21:26:57,753 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_df2bf0f0-42e3-4971-8332-b7706028bf6d/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[171907,171920] [2023-11-23 21:26:57,754 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_df2bf0f0-42e3-4971-8332-b7706028bf6d/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[172024,172037] [2023-11-23 21:26:57,845 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:26:57,904 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:26:58,043 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_df2bf0f0-42e3-4971-8332-b7706028bf6d/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[113333,113346] [2023-11-23 21:26:58,079 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_df2bf0f0-42e3-4971-8332-b7706028bf6d/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[118515,118528] [2023-11-23 21:26:58,105 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_df2bf0f0-42e3-4971-8332-b7706028bf6d/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[123107,123120] [2023-11-23 21:26:58,108 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_df2bf0f0-42e3-4971-8332-b7706028bf6d/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[123299,123312] [2023-11-23 21:26:58,149 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_df2bf0f0-42e3-4971-8332-b7706028bf6d/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[132997,133010] [2023-11-23 21:26:58,225 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_df2bf0f0-42e3-4971-8332-b7706028bf6d/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[152634,152647] [2023-11-23 21:26:58,295 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_df2bf0f0-42e3-4971-8332-b7706028bf6d/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[171907,171920] [2023-11-23 21:26:58,296 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_df2bf0f0-42e3-4971-8332-b7706028bf6d/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[172024,172037] [2023-11-23 21:26:58,363 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:26:58,680 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:26:58,681 WARN L675 CHandler]: The function x2x_utoa is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:26:58,681 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:26:58,681 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:26:58,681 WARN L675 CHandler]: The function strncmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:26:58,682 WARN L675 CHandler]: The function strstr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:26:58,682 WARN L675 CHandler]: The function strrchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:26:58,682 WARN L675 CHandler]: The function putchar is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:26:58,682 WARN L675 CHandler]: The function strncpy is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:26:58,682 WARN L675 CHandler]: The function fputs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:26:58,683 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:26:58,683 WARN L675 CHandler]: The function ctime is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:26:58,683 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:26:58,692 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:26:58,693 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:26:58 WrapperNode [2023-11-23 21:26:58,693 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:26:58,694 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:26:58,695 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:26:58,695 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:26:58,731 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:26:58" (1/1) ... [2023-11-23 21:26:58,877 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:26:58" (1/1) ... [2023-11-23 21:26:59,134 INFO L138 Inliner]: procedures = 743, calls = 1277, calls flagged for inlining = 67, calls inlined = 65, statements flattened = 4535 [2023-11-23 21:26:59,135 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:26:59,136 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:26:59,137 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:26:59,137 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:26:59,149 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:26:58" (1/1) ... [2023-11-23 21:26:59,149 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:26:58" (1/1) ... [2023-11-23 21:26:59,194 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:26:58" (1/1) ... [2023-11-23 21:26:59,195 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:26:58" (1/1) ... [2023-11-23 21:26:59,351 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:26:58" (1/1) ... [2023-11-23 21:26:59,384 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:26:58" (1/1) ... [2023-11-23 21:26:59,412 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:26:58" (1/1) ... [2023-11-23 21:26:59,442 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:26:58" (1/1) ... [2023-11-23 21:26:59,489 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:26:59,491 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:26:59,492 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:26:59,492 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:26:59,493 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:26:58" (1/1) ... [2023-11-23 21:26:59,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:26:59,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df2bf0f0-42e3-4971-8332-b7706028bf6d/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:26:59,547 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df2bf0f0-42e3-4971-8332-b7706028bf6d/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:26:59,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df2bf0f0-42e3-4971-8332-b7706028bf6d/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:26:59,603 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2023-11-23 21:26:59,604 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2023-11-23 21:26:59,606 INFO L130 BoogieDeclarations]: Found specification of procedure ctime [2023-11-23 21:26:59,607 INFO L130 BoogieDeclarations]: Found specification of procedure get_cached [2023-11-23 21:26:59,607 INFO L138 BoogieDeclarations]: Found implementation of procedure get_cached [2023-11-23 21:26:59,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc [2023-11-23 21:26:59,607 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc [2023-11-23 21:26:59,608 INFO L130 BoogieDeclarations]: Found specification of procedure vasprintf [2023-11-23 21:26:59,608 INFO L138 BoogieDeclarations]: Found implementation of procedure vasprintf [2023-11-23 21:26:59,608 INFO L130 BoogieDeclarations]: Found specification of procedure utoa [2023-11-23 21:26:59,608 INFO L138 BoogieDeclarations]: Found implementation of procedure utoa [2023-11-23 21:26:59,608 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-23 21:26:59,609 INFO L130 BoogieDeclarations]: Found specification of procedure print_name [2023-11-23 21:26:59,609 INFO L138 BoogieDeclarations]: Found implementation of procedure print_name [2023-11-23 21:26:59,609 INFO L130 BoogieDeclarations]: Found specification of procedure xrealloc [2023-11-23 21:26:59,609 INFO L138 BoogieDeclarations]: Found implementation of procedure xrealloc [2023-11-23 21:26:59,609 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-23 21:26:59,610 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2023-11-23 21:26:59,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:26:59,610 INFO L130 BoogieDeclarations]: Found specification of procedure xzalloc [2023-11-23 21:26:59,610 INFO L138 BoogieDeclarations]: Found implementation of procedure xzalloc [2023-11-23 21:26:59,610 INFO L130 BoogieDeclarations]: Found specification of procedure count_dirs [2023-11-23 21:26:59,610 INFO L138 BoogieDeclarations]: Found implementation of procedure count_dirs [2023-11-23 21:26:59,611 INFO L130 BoogieDeclarations]: Found specification of procedure my_stat [2023-11-23 21:26:59,611 INFO L138 BoogieDeclarations]: Found implementation of procedure my_stat [2023-11-23 21:26:59,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 21:26:59,611 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-23 21:26:59,611 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-23 21:26:59,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:26:59,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:26:59,612 INFO L130 BoogieDeclarations]: Found specification of procedure dfree [2023-11-23 21:26:59,613 INFO L138 BoogieDeclarations]: Found implementation of procedure dfree [2023-11-23 21:26:59,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:26:59,613 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2023-11-23 21:26:59,614 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-23 21:26:59,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:26:59,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:26:59,616 INFO L130 BoogieDeclarations]: Found specification of procedure dnsort [2023-11-23 21:26:59,616 INFO L138 BoogieDeclarations]: Found implementation of procedure dnsort [2023-11-23 21:26:59,616 INFO L130 BoogieDeclarations]: Found specification of procedure printable_string [2023-11-23 21:26:59,617 INFO L138 BoogieDeclarations]: Found implementation of procedure printable_string [2023-11-23 21:26:59,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:26:59,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:26:59,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-23 21:26:59,617 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-23 21:26:59,618 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2023-11-23 21:26:59,619 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2023-11-23 21:26:59,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 21:26:59,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 21:26:59,619 INFO L130 BoogieDeclarations]: Found specification of procedure bb_simple_perror_msg [2023-11-23 21:26:59,620 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_simple_perror_msg [2023-11-23 21:26:59,620 INFO L130 BoogieDeclarations]: Found specification of procedure get_cached_groupname [2023-11-23 21:26:59,620 INFO L138 BoogieDeclarations]: Found implementation of procedure get_cached_groupname [2023-11-23 21:26:59,620 INFO L130 BoogieDeclarations]: Found specification of procedure sort_and_display_files [2023-11-23 21:26:59,620 INFO L138 BoogieDeclarations]: Found implementation of procedure sort_and_display_files [2023-11-23 21:26:59,621 INFO L130 BoogieDeclarations]: Found specification of procedure stat [2023-11-23 21:26:59,621 INFO L138 BoogieDeclarations]: Found implementation of procedure stat [2023-11-23 21:26:59,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 21:26:59,622 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 21:26:59,622 INFO L130 BoogieDeclarations]: Found specification of procedure fgcolor [2023-11-23 21:26:59,623 INFO L138 BoogieDeclarations]: Found implementation of procedure fgcolor [2023-11-23 21:26:59,623 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:26:59,623 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:26:59,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:26:59,624 INFO L130 BoogieDeclarations]: Found specification of procedure splitdnarray [2023-11-23 21:26:59,624 INFO L138 BoogieDeclarations]: Found implementation of procedure splitdnarray [2023-11-23 21:26:59,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:26:59,625 INFO L130 BoogieDeclarations]: Found specification of procedure bold [2023-11-23 21:26:59,625 INFO L138 BoogieDeclarations]: Found implementation of procedure bold [2023-11-23 21:26:59,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:26:59,626 INFO L130 BoogieDeclarations]: Found specification of procedure append_char [2023-11-23 21:26:59,626 INFO L138 BoogieDeclarations]: Found implementation of procedure append_char [2023-11-23 21:26:59,626 INFO L130 BoogieDeclarations]: Found specification of procedure scan_and_display_dirs_recur [2023-11-23 21:26:59,626 INFO L138 BoogieDeclarations]: Found implementation of procedure scan_and_display_dirs_recur [2023-11-23 21:26:59,627 INFO L130 BoogieDeclarations]: Found specification of procedure lstat [2023-11-23 21:26:59,627 INFO L138 BoogieDeclarations]: Found implementation of procedure lstat [2023-11-23 21:26:59,627 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-23 21:26:59,627 INFO L130 BoogieDeclarations]: Found specification of procedure wh_helper [2023-11-23 21:26:59,627 INFO L138 BoogieDeclarations]: Found implementation of procedure wh_helper [2023-11-23 21:26:59,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:26:59,628 INFO L130 BoogieDeclarations]: Found specification of procedure bb_perror_msg [2023-11-23 21:26:59,628 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_perror_msg [2023-11-23 21:26:59,628 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2023-11-23 21:26:59,629 INFO L130 BoogieDeclarations]: Found specification of procedure isatty [2023-11-23 21:26:59,629 INFO L138 BoogieDeclarations]: Found implementation of procedure isatty [2023-11-23 21:26:59,629 INFO L130 BoogieDeclarations]: Found specification of procedure dnalloc [2023-11-23 21:26:59,629 INFO L138 BoogieDeclarations]: Found implementation of procedure dnalloc [2023-11-23 21:26:59,629 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-23 21:26:59,630 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-23 21:26:59,630 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-23 21:26:59,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:26:59,630 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2023-11-23 21:27:00,530 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:27:00,534 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:27:05,456 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:27:08,902 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:27:08,903 INFO L309 CfgBuilder]: Removed 66 assume(true) statements. [2023-11-23 21:27:08,906 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:27:08 BoogieIcfgContainer [2023-11-23 21:27:08,906 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:27:08,909 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:27:08,910 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:27:08,914 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:27:08,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:26:54" (1/3) ... [2023-11-23 21:27:08,918 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b4c3b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:27:08, skipping insertion in model container [2023-11-23 21:27:08,918 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:26:58" (2/3) ... [2023-11-23 21:27:08,919 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b4c3b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:27:08, skipping insertion in model container [2023-11-23 21:27:08,920 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:27:08" (3/3) ... [2023-11-23 21:27:08,927 INFO L112 eAbstractionObserver]: Analyzing ICFG ls-incomplete-2.i [2023-11-23 21:27:08,954 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:27:08,955 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-23 21:27:09,073 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:27:09,083 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;@12ef1da5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:27:09,083 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-23 21:27:09,099 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) [2023-11-23 21:27:09,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-23 21:27:09,132 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:27:09,134 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] [2023-11-23 21:27:09,134 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)] === [2023-11-23 21:27:09,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:27:09,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1714993822, now seen corresponding path program 1 times [2023-11-23 21:27:09,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:27:09,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468470942] [2023-11-23 21:27:09,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:27:09,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:27:09,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:27:10,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:27:10,235 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:27:10,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468470942] [2023-11-23 21:27:10,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468470942] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:27:10,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:27:10,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:27:10,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211233662] [2023-11-23 21:27:10,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:27:10,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:27:10,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:27:10,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:27:10,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:27:10,313 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) [2023-11-23 21:27:13,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:27:14,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:27:14,673 INFO L93 Difference]: Finished difference Result 1470 states and 2299 transitions. [2023-11-23 21:27:14,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:27:14,676 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 [2023-11-23 21:27:14,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:27:14,704 INFO L225 Difference]: With dead ends: 1470 [2023-11-23 21:27:14,705 INFO L226 Difference]: Without dead ends: 711 [2023-11-23 21:27:14,723 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 [2023-11-23 21:27:14,728 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 0 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:27:14,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1706 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 374 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2023-11-23 21:27:14,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2023-11-23 21:27:14,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 711. [2023-11-23 21:27:14,922 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) [2023-11-23 21:27:14,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 1007 transitions. [2023-11-23 21:27:14,942 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 1007 transitions. Word has length 41 [2023-11-23 21:27:14,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:27:14,943 INFO L495 AbstractCegarLoop]: Abstraction has 711 states and 1007 transitions. [2023-11-23 21:27:14,943 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) [2023-11-23 21:27:14,944 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 1007 transitions. [2023-11-23 21:27:14,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-23 21:27:14,956 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:27:14,957 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] [2023-11-23 21:27:14,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:27:14,958 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)] === [2023-11-23 21:27:14,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:27:14,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1154290851, now seen corresponding path program 1 times [2023-11-23 21:27:14,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:27:14,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086757089] [2023-11-23 21:27:14,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:27:14,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:27:15,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:27:15,492 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 21:27:15,493 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:27:15,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086757089] [2023-11-23 21:27:15,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086757089] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:27:15,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847182901] [2023-11-23 21:27:15,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:27:15,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:27:15,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df2bf0f0-42e3-4971-8332-b7706028bf6d/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:27:15,497 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df2bf0f0-42e3-4971-8332-b7706028bf6d/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:27:15,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df2bf0f0-42e3-4971-8332-b7706028bf6d/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:27:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:27:16,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 1629 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:27:16,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:27:16,809 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 21:27:16,809 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:27:16,883 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 21:27:16,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847182901] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:27:16,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1603260061] [2023-11-23 21:27:16,915 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2023-11-23 21:27:16,916 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:27:16,920 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:27:16,927 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:27:16,927 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs