./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 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e656576-420c-4980-bdeb-9dac0726570d/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e656576-420c-4980-bdeb-9dac0726570d/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e656576-420c-4980-bdeb-9dac0726570d/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e656576-420c-4980-bdeb-9dac0726570d/bin/utaipan-verify-SwPr7d2a91/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_1e656576-420c-4980-bdeb-9dac0726570d/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e656576-420c-4980-bdeb-9dac0726570d/bin/utaipan-verify-SwPr7d2a91 --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 0.2.4-dev-0e0057c [2023-11-24 23:13:41,383 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:13:41,514 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e656576-420c-4980-bdeb-9dac0726570d/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-24 23:13:41,529 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:13:41,530 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:13:41,586 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:13:41,587 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:13:41,588 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:13:41,589 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:13:41,597 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:13:41,598 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:13:41,598 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:13:41,599 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:13:41,601 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:13:41,602 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:13:41,602 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:13:41,603 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:13:41,603 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:13:41,604 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:13:41,605 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:13:41,605 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:13:41,606 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:13:41,608 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:13:41,608 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:13:41,609 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:13:41,609 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:13:41,610 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:13:41,610 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:13:41,611 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:13:41,611 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:13:41,613 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:13:41,613 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:13:41,614 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:13:41,614 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:13:41,614 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:13:41,615 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:13:41,615 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:13:41,615 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:13:41,616 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:13:41,616 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:13:41,616 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:13:41,617 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:13:41,617 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:13:41,617 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:13:41,618 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_1e656576-420c-4980-bdeb-9dac0726570d/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e656576-420c-4980-bdeb-9dac0726570d/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d1800e6a7093aef170e24bf50f0eb7e2646af9a10c241229886d0a1c02e7e0dd [2023-11-24 23:13:41,919 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:13:41,945 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:13:41,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:13:41,950 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:13:41,951 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:13:41,952 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e656576-420c-4980-bdeb-9dac0726570d/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i [2023-11-24 23:13:45,419 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:13:46,026 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:13:46,027 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e656576-420c-4980-bdeb-9dac0726570d/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i [2023-11-24 23:13:46,070 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e656576-420c-4980-bdeb-9dac0726570d/bin/utaipan-verify-SwPr7d2a91/data/4095c1b0d/41fdfd6292dd42d5a66e93fd923b18c4/FLAG1952c3ab5 [2023-11-24 23:13:46,088 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e656576-420c-4980-bdeb-9dac0726570d/bin/utaipan-verify-SwPr7d2a91/data/4095c1b0d/41fdfd6292dd42d5a66e93fd923b18c4 [2023-11-24 23:13:46,095 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:13:46,097 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:13:46,099 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:13:46,099 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:13:46,105 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:13:46,105 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:13:46" (1/1) ... [2023-11-24 23:13:46,107 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b56251d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:13:46, skipping insertion in model container [2023-11-24 23:13:46,107 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:13:46" (1/1) ... [2023-11-24 23:13:46,236 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:13:49,143 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_1e656576-420c-4980-bdeb-9dac0726570d/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[113333,113346] [2023-11-24 23:13:49,182 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_1e656576-420c-4980-bdeb-9dac0726570d/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[118515,118528] [2023-11-24 23:13:49,217 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_1e656576-420c-4980-bdeb-9dac0726570d/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[123107,123120] [2023-11-24 23:13:49,228 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_1e656576-420c-4980-bdeb-9dac0726570d/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[123299,123312] [2023-11-24 23:13:49,290 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_1e656576-420c-4980-bdeb-9dac0726570d/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[132997,133010] [2023-11-24 23:13:49,449 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_1e656576-420c-4980-bdeb-9dac0726570d/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[152634,152647] [2023-11-24 23:13:49,562 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_1e656576-420c-4980-bdeb-9dac0726570d/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[171907,171920] [2023-11-24 23:13:49,566 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_1e656576-420c-4980-bdeb-9dac0726570d/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[172024,172037] [2023-11-24 23:13:49,684 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:13:49,723 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:13:49,818 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_1e656576-420c-4980-bdeb-9dac0726570d/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[113333,113346] [2023-11-24 23:13:49,836 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_1e656576-420c-4980-bdeb-9dac0726570d/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[118515,118528] [2023-11-24 23:13:49,857 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_1e656576-420c-4980-bdeb-9dac0726570d/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[123107,123120] [2023-11-24 23:13:49,860 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_1e656576-420c-4980-bdeb-9dac0726570d/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[123299,123312] [2023-11-24 23:13:49,885 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_1e656576-420c-4980-bdeb-9dac0726570d/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[132997,133010] [2023-11-24 23:13:49,940 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_1e656576-420c-4980-bdeb-9dac0726570d/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[152634,152647] [2023-11-24 23:13:50,001 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_1e656576-420c-4980-bdeb-9dac0726570d/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[171907,171920] [2023-11-24 23:13:50,008 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_1e656576-420c-4980-bdeb-9dac0726570d/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i[172024,172037] [2023-11-24 23:13:50,075 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:13:50,388 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:13:50,388 WARN L675 CHandler]: The function x2x_utoa is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:13:50,388 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:13:50,389 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:13:50,389 WARN L675 CHandler]: The function strncmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:13:50,389 WARN L675 CHandler]: The function strstr is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:13:50,389 WARN L675 CHandler]: The function strrchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:13:50,389 WARN L675 CHandler]: The function putchar is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:13:50,390 WARN L675 CHandler]: The function strncpy is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:13:50,390 WARN L675 CHandler]: The function fputs is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:13:50,390 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:13:50,390 WARN L675 CHandler]: The function ctime is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:13:50,390 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:13:50,399 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:13:50,399 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:13:50 WrapperNode [2023-11-24 23:13:50,399 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:13:50,401 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:13:50,401 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:13:50,401 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:13:50,409 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:13:50" (1/1) ... [2023-11-24 23:13:50,526 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:13:50" (1/1) ... [2023-11-24 23:13:50,772 INFO L138 Inliner]: procedures = 743, calls = 1277, calls flagged for inlining = 67, calls inlined = 65, statements flattened = 4545 [2023-11-24 23:13:50,773 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:13:50,774 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:13:50,774 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:13:50,775 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:13:50,785 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:13:50" (1/1) ... [2023-11-24 23:13:50,786 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:13:50" (1/1) ... [2023-11-24 23:13:50,813 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:13:50" (1/1) ... [2023-11-24 23:13:50,813 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:13:50" (1/1) ... [2023-11-24 23:13:50,939 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:13:50" (1/1) ... [2023-11-24 23:13:50,984 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:13:50" (1/1) ... [2023-11-24 23:13:51,024 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:13:50" (1/1) ... [2023-11-24 23:13:51,049 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:13:50" (1/1) ... [2023-11-24 23:13:51,093 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:13:51,095 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:13:51,096 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:13:51,096 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:13:51,097 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:13:50" (1/1) ... [2023-11-24 23:13:51,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:13:51,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e656576-420c-4980-bdeb-9dac0726570d/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:13:51,139 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e656576-420c-4980-bdeb-9dac0726570d/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:13:51,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e656576-420c-4980-bdeb-9dac0726570d/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:13:51,184 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2023-11-24 23:13:51,184 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2023-11-24 23:13:51,186 INFO L130 BoogieDeclarations]: Found specification of procedure ctime [2023-11-24 23:13:51,187 INFO L130 BoogieDeclarations]: Found specification of procedure get_cached [2023-11-24 23:13:51,187 INFO L138 BoogieDeclarations]: Found implementation of procedure get_cached [2023-11-24 23:13:51,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc [2023-11-24 23:13:51,187 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc [2023-11-24 23:13:51,187 INFO L130 BoogieDeclarations]: Found specification of procedure vasprintf [2023-11-24 23:13:51,188 INFO L138 BoogieDeclarations]: Found implementation of procedure vasprintf [2023-11-24 23:13:51,188 INFO L130 BoogieDeclarations]: Found specification of procedure utoa [2023-11-24 23:13:51,188 INFO L138 BoogieDeclarations]: Found implementation of procedure utoa [2023-11-24 23:13:51,189 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-24 23:13:51,189 INFO L130 BoogieDeclarations]: Found specification of procedure print_name [2023-11-24 23:13:51,189 INFO L138 BoogieDeclarations]: Found implementation of procedure print_name [2023-11-24 23:13:51,189 INFO L130 BoogieDeclarations]: Found specification of procedure xrealloc [2023-11-24 23:13:51,189 INFO L138 BoogieDeclarations]: Found implementation of procedure xrealloc [2023-11-24 23:13:51,189 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-24 23:13:51,189 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2023-11-24 23:13:51,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:13:51,190 INFO L130 BoogieDeclarations]: Found specification of procedure xzalloc [2023-11-24 23:13:51,190 INFO L138 BoogieDeclarations]: Found implementation of procedure xzalloc [2023-11-24 23:13:51,190 INFO L130 BoogieDeclarations]: Found specification of procedure count_dirs [2023-11-24 23:13:51,190 INFO L138 BoogieDeclarations]: Found implementation of procedure count_dirs [2023-11-24 23:13:51,190 INFO L130 BoogieDeclarations]: Found specification of procedure my_stat [2023-11-24 23:13:51,190 INFO L138 BoogieDeclarations]: Found implementation of procedure my_stat [2023-11-24 23:13:51,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-24 23:13:51,190 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-24 23:13:51,191 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-24 23:13:51,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-24 23:13:51,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:13:51,191 INFO L130 BoogieDeclarations]: Found specification of procedure dfree [2023-11-24 23:13:51,191 INFO L138 BoogieDeclarations]: Found implementation of procedure dfree [2023-11-24 23:13:51,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:13:51,191 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2023-11-24 23:13:51,192 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-24 23:13:51,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:13:51,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:13:51,194 INFO L130 BoogieDeclarations]: Found specification of procedure dnsort [2023-11-24 23:13:51,194 INFO L138 BoogieDeclarations]: Found implementation of procedure dnsort [2023-11-24 23:13:51,194 INFO L130 BoogieDeclarations]: Found specification of procedure printable_string [2023-11-24 23:13:51,195 INFO L138 BoogieDeclarations]: Found implementation of procedure printable_string [2023-11-24 23:13:51,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:13:51,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:13:51,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-24 23:13:51,195 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-24 23:13:51,195 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2023-11-24 23:13:51,196 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2023-11-24 23:13:51,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-24 23:13:51,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-24 23:13:51,196 INFO L130 BoogieDeclarations]: Found specification of procedure bb_simple_perror_msg [2023-11-24 23:13:51,196 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_simple_perror_msg [2023-11-24 23:13:51,197 INFO L130 BoogieDeclarations]: Found specification of procedure get_cached_groupname [2023-11-24 23:13:51,197 INFO L138 BoogieDeclarations]: Found implementation of procedure get_cached_groupname [2023-11-24 23:13:51,197 INFO L130 BoogieDeclarations]: Found specification of procedure sort_and_display_files [2023-11-24 23:13:51,197 INFO L138 BoogieDeclarations]: Found implementation of procedure sort_and_display_files [2023-11-24 23:13:51,197 INFO L130 BoogieDeclarations]: Found specification of procedure stat [2023-11-24 23:13:51,197 INFO L138 BoogieDeclarations]: Found implementation of procedure stat [2023-11-24 23:13:51,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-24 23:13:51,198 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-24 23:13:51,199 INFO L130 BoogieDeclarations]: Found specification of procedure fgcolor [2023-11-24 23:13:51,199 INFO L138 BoogieDeclarations]: Found implementation of procedure fgcolor [2023-11-24 23:13:51,199 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-24 23:13:51,200 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-24 23:13:51,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:13:51,200 INFO L130 BoogieDeclarations]: Found specification of procedure splitdnarray [2023-11-24 23:13:51,200 INFO L138 BoogieDeclarations]: Found implementation of procedure splitdnarray [2023-11-24 23:13:51,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:13:51,201 INFO L130 BoogieDeclarations]: Found specification of procedure bold [2023-11-24 23:13:51,201 INFO L138 BoogieDeclarations]: Found implementation of procedure bold [2023-11-24 23:13:51,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-24 23:13:51,202 INFO L130 BoogieDeclarations]: Found specification of procedure append_char [2023-11-24 23:13:51,202 INFO L138 BoogieDeclarations]: Found implementation of procedure append_char [2023-11-24 23:13:51,202 INFO L130 BoogieDeclarations]: Found specification of procedure scan_and_display_dirs_recur [2023-11-24 23:13:51,202 INFO L138 BoogieDeclarations]: Found implementation of procedure scan_and_display_dirs_recur [2023-11-24 23:13:51,202 INFO L130 BoogieDeclarations]: Found specification of procedure lstat [2023-11-24 23:13:51,202 INFO L138 BoogieDeclarations]: Found implementation of procedure lstat [2023-11-24 23:13:51,202 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-24 23:13:51,202 INFO L130 BoogieDeclarations]: Found specification of procedure wh_helper [2023-11-24 23:13:51,203 INFO L138 BoogieDeclarations]: Found implementation of procedure wh_helper [2023-11-24 23:13:51,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:13:51,203 INFO L130 BoogieDeclarations]: Found specification of procedure bb_perror_msg [2023-11-24 23:13:51,203 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_perror_msg [2023-11-24 23:13:51,204 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2023-11-24 23:13:51,204 INFO L130 BoogieDeclarations]: Found specification of procedure isatty [2023-11-24 23:13:51,204 INFO L138 BoogieDeclarations]: Found implementation of procedure isatty [2023-11-24 23:13:51,204 INFO L130 BoogieDeclarations]: Found specification of procedure dnalloc [2023-11-24 23:13:51,204 INFO L138 BoogieDeclarations]: Found implementation of procedure dnalloc [2023-11-24 23:13:51,204 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-24 23:13:51,204 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-24 23:13:51,205 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-24 23:13:51,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:13:51,205 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2023-11-24 23:13:52,005 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:13:52,009 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:13:58,278 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:14:01,238 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:14:01,239 INFO L309 CfgBuilder]: Removed 66 assume(true) statements. [2023-11-24 23:14:01,241 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:14:01 BoogieIcfgContainer [2023-11-24 23:14:01,241 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:14:01,245 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:14:01,245 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:14:01,248 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:14:01,249 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:13:46" (1/3) ... [2023-11-24 23:14:01,251 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19e8ba7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:14:01, skipping insertion in model container [2023-11-24 23:14:01,252 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:13:50" (2/3) ... [2023-11-24 23:14:01,252 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19e8ba7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:14:01, skipping insertion in model container [2023-11-24 23:14:01,253 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:14:01" (3/3) ... [2023-11-24 23:14:01,255 INFO L112 eAbstractionObserver]: Analyzing ICFG ls-incomplete-2.i [2023-11-24 23:14:01,277 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:14:01,277 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-24 23:14:01,370 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:14:01,383 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;@97f08a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:14:01,383 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-24 23:14:01,394 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) [2023-11-24 23:14:01,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-24 23:14:01,414 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:14:01,415 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] [2023-11-24 23:14:01,416 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)] === [2023-11-24 23:14:01,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:14:01,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1714993822, now seen corresponding path program 1 times [2023-11-24 23:14:01,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:14:01,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7948545] [2023-11-24 23:14:01,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:14:01,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:14:01,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:14:02,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:14:02,412 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:14:02,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7948545] [2023-11-24 23:14:02,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7948545] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:14:02,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:14:02,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:14:02,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775815059] [2023-11-24 23:14:02,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:14:02,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:14:02,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:14:02,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:14:02,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:14:02,471 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) [2023-11-24 23:14:05,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:14:07,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:14:08,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:14:08,578 INFO L93 Difference]: Finished difference Result 1470 states and 2299 transitions. [2023-11-24 23:14:08,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:14:08,581 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 [2023-11-24 23:14:08,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:14:08,600 INFO L225 Difference]: With dead ends: 1470 [2023-11-24 23:14:08,600 INFO L226 Difference]: Without dead ends: 711 [2023-11-24 23:14:08,620 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 [2023-11-24 23:14:08,627 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 0 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 16 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:14:08,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1706 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 373 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2023-11-24 23:14:08,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2023-11-24 23:14:08,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 711. [2023-11-24 23:14:08,729 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) [2023-11-24 23:14:08,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 1007 transitions. [2023-11-24 23:14:08,739 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 1007 transitions. Word has length 41 [2023-11-24 23:14:08,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:14:08,739 INFO L495 AbstractCegarLoop]: Abstraction has 711 states and 1007 transitions. [2023-11-24 23:14:08,740 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) [2023-11-24 23:14:08,740 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 1007 transitions. [2023-11-24 23:14:08,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-24 23:14:08,744 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:14:08,744 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] [2023-11-24 23:14:08,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:14:08,744 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)] === [2023-11-24 23:14:08,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:14:08,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1154290851, now seen corresponding path program 1 times [2023-11-24 23:14:08,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:14:08,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805976219] [2023-11-24 23:14:08,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:14:08,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:14:08,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:14:09,426 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 23:14:09,427 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:14:09,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805976219] [2023-11-24 23:14:09,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805976219] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:14:09,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564581040] [2023-11-24 23:14:09,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:14:09,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:14:09,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e656576-420c-4980-bdeb-9dac0726570d/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:14:09,431 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e656576-420c-4980-bdeb-9dac0726570d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:14:09,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e656576-420c-4980-bdeb-9dac0726570d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:14:10,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:14:10,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 1629 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:14:10,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:14:10,520 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 23:14:10,520 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:14:10,569 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 23:14:10,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564581040] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:14:10,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1613844851] [2023-11-24 23:14:10,591 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2023-11-24 23:14:10,591 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:14:10,594 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:14:10,599 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:14:10,600 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs