./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/busybox-1.22.0/printf-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_509c66c0-766f-474b-bcfa-9f17a6f59017/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509c66c0-766f-474b-bcfa-9f17a6f59017/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509c66c0-766f-474b-bcfa-9f17a6f59017/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509c66c0-766f-474b-bcfa-9f17a6f59017/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/printf-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509c66c0-766f-474b-bcfa-9f17a6f59017/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509c66c0-766f-474b-bcfa-9f17a6f59017/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a1277896718e4a2de50a241e859788fd2cca972852ccec2fe2acb0e0515dfcaa --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:13:10,909 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:13:11,042 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509c66c0-766f-474b-bcfa-9f17a6f59017/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-19 04:13:11,051 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:13:11,052 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:13:11,097 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:13:11,098 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:13:11,098 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:13:11,100 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:13:11,105 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:13:11,106 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:13:11,106 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:13:11,107 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:13:11,108 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:13:11,109 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:13:11,109 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:13:11,110 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:13:11,110 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:13:11,111 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:13:11,111 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:13:11,112 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:13:11,112 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:13:11,114 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:13:11,114 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:13:11,115 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:13:11,115 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:13:11,116 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:13:11,116 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:13:11,116 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:13:11,117 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:13:11,118 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:13:11,119 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:13:11,119 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:13:11,119 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:13:11,120 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:13:11,120 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:13:11,120 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:13:11,120 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:13:11,121 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:13:11,121 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:13:11,121 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:13:11,122 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:13:11,122 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_509c66c0-766f-474b-bcfa-9f17a6f59017/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509c66c0-766f-474b-bcfa-9f17a6f59017/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a1277896718e4a2de50a241e859788fd2cca972852ccec2fe2acb0e0515dfcaa [2023-11-19 04:13:11,470 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:13:11,511 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:13:11,514 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:13:11,516 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:13:11,516 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:13:11,518 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509c66c0-766f-474b-bcfa-9f17a6f59017/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/busybox-1.22.0/printf-2.i [2023-11-19 04:13:14,700 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:13:15,335 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:13:15,337 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509c66c0-766f-474b-bcfa-9f17a6f59017/sv-benchmarks/c/busybox-1.22.0/printf-2.i [2023-11-19 04:13:15,377 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509c66c0-766f-474b-bcfa-9f17a6f59017/bin/utaipan-verify-t7M7D8N6sZ/data/fe95cb6ea/095122b2533547cab97a8f84820d1fe0/FLAG623eac7b7 [2023-11-19 04:13:15,394 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509c66c0-766f-474b-bcfa-9f17a6f59017/bin/utaipan-verify-t7M7D8N6sZ/data/fe95cb6ea/095122b2533547cab97a8f84820d1fe0 [2023-11-19 04:13:15,397 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:13:15,399 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:13:15,401 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:13:15,401 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:13:15,411 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:13:15,412 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:13:15" (1/1) ... [2023-11-19 04:13:15,414 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6485c90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:15, skipping insertion in model container [2023-11-19 04:13:15,414 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:13:15" (1/1) ... [2023-11-19 04:13:15,523 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:13:17,198 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_509c66c0-766f-474b-bcfa-9f17a6f59017/sv-benchmarks/c/busybox-1.22.0/printf-2.i[103699,103712] [2023-11-19 04:13:17,216 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_509c66c0-766f-474b-bcfa-9f17a6f59017/sv-benchmarks/c/busybox-1.22.0/printf-2.i[103875,103888] [2023-11-19 04:13:17,218 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_509c66c0-766f-474b-bcfa-9f17a6f59017/sv-benchmarks/c/busybox-1.22.0/printf-2.i[104048,104061] [2023-11-19 04:13:17,220 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_509c66c0-766f-474b-bcfa-9f17a6f59017/sv-benchmarks/c/busybox-1.22.0/printf-2.i[104259,104272] [2023-11-19 04:13:17,222 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_509c66c0-766f-474b-bcfa-9f17a6f59017/sv-benchmarks/c/busybox-1.22.0/printf-2.i[104572,104585] [2023-11-19 04:13:17,233 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_509c66c0-766f-474b-bcfa-9f17a6f59017/sv-benchmarks/c/busybox-1.22.0/printf-2.i[106719,106732] [2023-11-19 04:13:17,247 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_509c66c0-766f-474b-bcfa-9f17a6f59017/sv-benchmarks/c/busybox-1.22.0/printf-2.i[109080,109093] [2023-11-19 04:13:17,251 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_509c66c0-766f-474b-bcfa-9f17a6f59017/sv-benchmarks/c/busybox-1.22.0/printf-2.i[109532,109545] [2023-11-19 04:13:17,256 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_509c66c0-766f-474b-bcfa-9f17a6f59017/sv-benchmarks/c/busybox-1.22.0/printf-2.i[109885,109898] [2023-11-19 04:13:17,265 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_509c66c0-766f-474b-bcfa-9f17a6f59017/sv-benchmarks/c/busybox-1.22.0/printf-2.i[110424,110437] [2023-11-19 04:13:17,283 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_509c66c0-766f-474b-bcfa-9f17a6f59017/sv-benchmarks/c/busybox-1.22.0/printf-2.i[111343,111356] [2023-11-19 04:13:17,285 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_509c66c0-766f-474b-bcfa-9f17a6f59017/sv-benchmarks/c/busybox-1.22.0/printf-2.i[111696,111709] [2023-11-19 04:13:17,288 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_509c66c0-766f-474b-bcfa-9f17a6f59017/sv-benchmarks/c/busybox-1.22.0/printf-2.i[112237,112250] [2023-11-19 04:13:17,292 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_509c66c0-766f-474b-bcfa-9f17a6f59017/sv-benchmarks/c/busybox-1.22.0/printf-2.i[112970,112983] [2023-11-19 04:13:17,438 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:13:17,491 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:13:17,650 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_509c66c0-766f-474b-bcfa-9f17a6f59017/sv-benchmarks/c/busybox-1.22.0/printf-2.i[103699,103712] [2023-11-19 04:13:17,657 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_509c66c0-766f-474b-bcfa-9f17a6f59017/sv-benchmarks/c/busybox-1.22.0/printf-2.i[103875,103888] [2023-11-19 04:13:17,658 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_509c66c0-766f-474b-bcfa-9f17a6f59017/sv-benchmarks/c/busybox-1.22.0/printf-2.i[104048,104061] [2023-11-19 04:13:17,660 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_509c66c0-766f-474b-bcfa-9f17a6f59017/sv-benchmarks/c/busybox-1.22.0/printf-2.i[104259,104272] [2023-11-19 04:13:17,662 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_509c66c0-766f-474b-bcfa-9f17a6f59017/sv-benchmarks/c/busybox-1.22.0/printf-2.i[104572,104585] [2023-11-19 04:13:17,684 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_509c66c0-766f-474b-bcfa-9f17a6f59017/sv-benchmarks/c/busybox-1.22.0/printf-2.i[106719,106732] [2023-11-19 04:13:17,693 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_509c66c0-766f-474b-bcfa-9f17a6f59017/sv-benchmarks/c/busybox-1.22.0/printf-2.i[109080,109093] [2023-11-19 04:13:17,695 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_509c66c0-766f-474b-bcfa-9f17a6f59017/sv-benchmarks/c/busybox-1.22.0/printf-2.i[109532,109545] [2023-11-19 04:13:17,697 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_509c66c0-766f-474b-bcfa-9f17a6f59017/sv-benchmarks/c/busybox-1.22.0/printf-2.i[109885,109898] [2023-11-19 04:13:17,700 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_509c66c0-766f-474b-bcfa-9f17a6f59017/sv-benchmarks/c/busybox-1.22.0/printf-2.i[110424,110437] [2023-11-19 04:13:17,703 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_509c66c0-766f-474b-bcfa-9f17a6f59017/sv-benchmarks/c/busybox-1.22.0/printf-2.i[111343,111356] [2023-11-19 04:13:17,705 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_509c66c0-766f-474b-bcfa-9f17a6f59017/sv-benchmarks/c/busybox-1.22.0/printf-2.i[111696,111709] [2023-11-19 04:13:17,708 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_509c66c0-766f-474b-bcfa-9f17a6f59017/sv-benchmarks/c/busybox-1.22.0/printf-2.i[112237,112250] [2023-11-19 04:13:17,711 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_509c66c0-766f-474b-bcfa-9f17a6f59017/sv-benchmarks/c/busybox-1.22.0/printf-2.i[112970,112983] [2023-11-19 04:13:17,812 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:13:18,112 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:13:18,113 WARN L675 CHandler]: The function strtoull is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:13:18,113 WARN L675 CHandler]: The function strtol is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:13:18,113 WARN L675 CHandler]: The function strstr is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:13:18,114 WARN L675 CHandler]: The function putchar is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:13:18,114 WARN L675 CHandler]: The function strtoll is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:13:18,114 WARN L675 CHandler]: The function convert is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:13:18,144 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:13:18,145 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:18 WrapperNode [2023-11-19 04:13:18,146 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:13:18,148 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:13:18,148 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:13:18,148 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:13:18,185 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:18" (1/1) ... [2023-11-19 04:13:18,300 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:18" (1/1) ... [2023-11-19 04:13:18,428 INFO L138 Inliner]: procedures = 648, calls = 511, calls flagged for inlining = 31, calls inlined = 29, statements flattened = 1562 [2023-11-19 04:13:18,431 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:13:18,432 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:13:18,432 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:13:18,432 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:13:18,445 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:18" (1/1) ... [2023-11-19 04:13:18,445 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:18" (1/1) ... [2023-11-19 04:13:18,482 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:18" (1/1) ... [2023-11-19 04:13:18,482 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:18" (1/1) ... [2023-11-19 04:13:18,595 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:18" (1/1) ... [2023-11-19 04:13:18,625 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:18" (1/1) ... [2023-11-19 04:13:18,658 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:18" (1/1) ... [2023-11-19 04:13:18,678 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:18" (1/1) ... [2023-11-19 04:13:18,709 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:13:18,711 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:13:18,711 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:13:18,712 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:13:18,714 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:18" (1/1) ... [2023-11-19 04:13:18,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:13:18,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509c66c0-766f-474b-bcfa-9f17a6f59017/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:13:18,753 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509c66c0-766f-474b-bcfa-9f17a6f59017/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:13:18,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509c66c0-766f-474b-bcfa-9f17a6f59017/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:13:18,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-19 04:13:18,807 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2023-11-19 04:13:18,808 INFO L130 BoogieDeclarations]: Found specification of procedure bb_putchar [2023-11-19 04:13:18,809 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_putchar [2023-11-19 04:13:18,809 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2023-11-19 04:13:18,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:13:18,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2023-11-19 04:13:18,809 INFO L130 BoogieDeclarations]: Found specification of procedure ret_ERANGE [2023-11-19 04:13:18,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ret_ERANGE [2023-11-19 04:13:18,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 04:13:18,810 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-19 04:13:18,810 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-19 04:13:18,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 04:13:18,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 04:13:18,811 INFO L130 BoogieDeclarations]: Found specification of procedure get_width_prec [2023-11-19 04:13:18,811 INFO L138 BoogieDeclarations]: Found implementation of procedure get_width_prec [2023-11-19 04:13:18,811 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2023-11-19 04:13:18,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-11-19 04:13:18,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 04:13:18,812 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-19 04:13:18,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:13:18,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 04:13:18,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:13:18,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:13:18,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-19 04:13:18,813 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-19 04:13:18,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 04:13:18,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 04:13:18,813 INFO L130 BoogieDeclarations]: Found specification of procedure handle_errors [2023-11-19 04:13:18,813 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_errors [2023-11-19 04:13:18,814 INFO L130 BoogieDeclarations]: Found specification of procedure bb_process_escape_sequence [2023-11-19 04:13:18,815 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_process_escape_sequence [2023-11-19 04:13:18,815 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 04:13:18,816 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 04:13:18,816 INFO L130 BoogieDeclarations]: Found specification of procedure print_direc [2023-11-19 04:13:18,816 INFO L138 BoogieDeclarations]: Found implementation of procedure print_direc [2023-11-19 04:13:18,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:13:18,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 04:13:18,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 04:13:18,817 INFO L130 BoogieDeclarations]: Found specification of procedure bb_ascii_isalnum [2023-11-19 04:13:18,818 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_ascii_isalnum [2023-11-19 04:13:18,818 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-11-19 04:13:18,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 04:13:18,818 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2023-11-19 04:13:18,818 INFO L130 BoogieDeclarations]: Found specification of procedure bb_strtoll [2023-11-19 04:13:18,819 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_strtoll [2023-11-19 04:13:18,819 INFO L130 BoogieDeclarations]: Found specification of procedure multiconvert [2023-11-19 04:13:18,819 INFO L138 BoogieDeclarations]: Found implementation of procedure multiconvert [2023-11-19 04:13:18,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2023-11-19 04:13:18,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:13:18,819 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg [2023-11-19 04:13:18,820 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg [2023-11-19 04:13:19,509 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:13:19,512 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:13:21,504 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:13:22,102 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:13:22,102 INFO L302 CfgBuilder]: Removed 19 assume(true) statements. [2023-11-19 04:13:22,119 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:13:22 BoogieIcfgContainer [2023-11-19 04:13:22,119 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:13:22,122 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:13:22,123 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:13:22,128 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:13:22,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:13:15" (1/3) ... [2023-11-19 04:13:22,131 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aa4d693 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:13:22, skipping insertion in model container [2023-11-19 04:13:22,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:18" (2/3) ... [2023-11-19 04:13:22,133 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aa4d693 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:13:22, skipping insertion in model container [2023-11-19 04:13:22,134 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:13:22" (3/3) ... [2023-11-19 04:13:22,135 INFO L112 eAbstractionObserver]: Analyzing ICFG printf-2.i [2023-11-19 04:13:22,161 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:13:22,161 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-19 04:13:22,264 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:13:22,281 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;@335feaf5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:13:22,282 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-11-19 04:13:22,291 INFO L276 IsEmpty]: Start isEmpty. Operand has 303 states, 235 states have (on average 1.5404255319148936) internal successors, (362), 250 states have internal predecessors, (362), 40 states have call successors, (40), 13 states have call predecessors, (40), 13 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-11-19 04:13:22,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-19 04:13:22,312 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:13:22,313 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] [2023-11-19 04:13:22,314 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting print_direcErr0ASSERT_VIOLATIONERROR_FUNCTION === [multiconvertErr0ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr1ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-11-19 04:13:22,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:13:22,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1098287706, now seen corresponding path program 1 times [2023-11-19 04:13:22,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:13:22,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560318948] [2023-11-19 04:13:22,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:22,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:13:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:23,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:13:23,150 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:13:23,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560318948] [2023-11-19 04:13:23,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560318948] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:13:23,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:13:23,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:13:23,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137779424] [2023-11-19 04:13:23,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:13:23,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:13:23,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:13:23,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:13:23,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:13:23,214 INFO L87 Difference]: Start difference. First operand has 303 states, 235 states have (on average 1.5404255319148936) internal successors, (362), 250 states have internal predecessors, (362), 40 states have call successors, (40), 13 states have call predecessors, (40), 13 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:13:23,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:13:23,633 INFO L93 Difference]: Finished difference Result 605 states and 902 transitions. [2023-11-19 04:13:23,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:13:23,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2023-11-19 04:13:23,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:13:23,648 INFO L225 Difference]: With dead ends: 605 [2023-11-19 04:13:23,648 INFO L226 Difference]: Without dead ends: 295 [2023-11-19 04:13:23,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:13:23,658 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 0 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:13:23,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 690 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:13:23,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2023-11-19 04:13:23,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2023-11-19 04:13:23,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 230 states have (on average 1.4043478260869566) internal successors, (323), 244 states have internal predecessors, (323), 38 states have call successors, (38), 13 states have call predecessors, (38), 13 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-19 04:13:23,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 399 transitions. [2023-11-19 04:13:23,751 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 399 transitions. Word has length 32 [2023-11-19 04:13:23,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:13:23,751 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 399 transitions. [2023-11-19 04:13:23,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:13:23,752 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 399 transitions. [2023-11-19 04:13:23,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-19 04:13:23,762 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:13:23,762 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] [2023-11-19 04:13:23,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:13:23,763 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting print_direcErr0ASSERT_VIOLATIONERROR_FUNCTION === [multiconvertErr0ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr1ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-11-19 04:13:23,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:13:23,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1209585178, now seen corresponding path program 1 times [2023-11-19 04:13:23,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:13:23,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820536229] [2023-11-19 04:13:23,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:23,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:13:23,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:24,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:13:24,116 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:13:24,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820536229] [2023-11-19 04:13:24,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820536229] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:13:24,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266506747] [2023-11-19 04:13:24,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:24,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:13:24,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509c66c0-766f-474b-bcfa-9f17a6f59017/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:13:24,123 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509c66c0-766f-474b-bcfa-9f17a6f59017/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:13:24,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509c66c0-766f-474b-bcfa-9f17a6f59017/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 04:13:24,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:24,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:13:24,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:13:24,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:13:24,671 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:13:24,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:13:24,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266506747] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:13:24,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1138313530] [2023-11-19 04:13:24,732 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2023-11-19 04:13:24,732 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:13:24,737 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:13:24,743 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:13:24,744 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:13:30,974 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 118 for LOIs [2023-11-19 04:13:31,027 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:13:33,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1138313530] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:13:33,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:13:33,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 3, 4] total 13 [2023-11-19 04:13:33,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957197212] [2023-11-19 04:13:33,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:13:33,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 04:13:33,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:13:33,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 04:13:33,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-19 04:13:33,147 INFO L87 Difference]: Start difference. First operand 295 states and 399 transitions. Second operand has 8 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:13:36,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:13:36,776 INFO L93 Difference]: Finished difference Result 586 states and 790 transitions. [2023-11-19 04:13:36,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 04:13:36,780 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2023-11-19 04:13:36,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:13:36,786 INFO L225 Difference]: With dead ends: 586 [2023-11-19 04:13:36,786 INFO L226 Difference]: Without dead ends: 298 [2023-11-19 04:13:36,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-19 04:13:36,789 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 0 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1385 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-19 04:13:36,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1385 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-19 04:13:36,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2023-11-19 04:13:36,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2023-11-19 04:13:36,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 232 states have (on average 1.4008620689655173) internal successors, (325), 246 states have internal predecessors, (325), 38 states have call successors, (38), 14 states have call predecessors, (38), 14 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-19 04:13:36,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 401 transitions. [2023-11-19 04:13:36,837 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 401 transitions. Word has length 36 [2023-11-19 04:13:36,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:13:36,838 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 401 transitions. [2023-11-19 04:13:36,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:13:36,838 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 401 transitions. [2023-11-19 04:13:36,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-19 04:13:36,840 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:13:36,840 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] [2023-11-19 04:13:36,863 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509c66c0-766f-474b-bcfa-9f17a6f59017/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 04:13:37,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509c66c0-766f-474b-bcfa-9f17a6f59017/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:13:37,049 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting print_direcErr0ASSERT_VIOLATIONERROR_FUNCTION === [multiconvertErr0ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr1ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-11-19 04:13:37,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:13:37,049 INFO L85 PathProgramCache]: Analyzing trace with hash -3482850, now seen corresponding path program 1 times [2023-11-19 04:13:37,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:13:37,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437077760] [2023-11-19 04:13:37,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:37,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:13:37,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:37,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:13:37,336 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:13:37,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437077760] [2023-11-19 04:13:37,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437077760] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:13:37,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74371003] [2023-11-19 04:13:37,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:37,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:13:37,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509c66c0-766f-474b-bcfa-9f17a6f59017/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:13:37,338 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509c66c0-766f-474b-bcfa-9f17a6f59017/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:13:37,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509c66c0-766f-474b-bcfa-9f17a6f59017/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 04:13:37,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:37,818 INFO L262 TraceCheckSpWp]: Trace formula consists of 841 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:13:37,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:13:37,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:13:37,834 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:13:37,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74371003] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:13:37,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:13:37,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-11-19 04:13:37,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137947050] [2023-11-19 04:13:37,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:13:37,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:13:37,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:13:37,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:13:37,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:13:37,837 INFO L87 Difference]: Start difference. First operand 298 states and 401 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:13:38,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:13:38,214 INFO L93 Difference]: Finished difference Result 589 states and 795 transitions. [2023-11-19 04:13:38,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:13:38,215 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2023-11-19 04:13:38,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:13:38,218 INFO L225 Difference]: With dead ends: 589 [2023-11-19 04:13:38,218 INFO L226 Difference]: Without dead ends: 299 [2023-11-19 04:13:38,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:13:38,220 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 0 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:13:38,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 665 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:13:38,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-11-19 04:13:38,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2023-11-19 04:13:38,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 233 states have (on average 1.3991416309012876) internal successors, (326), 247 states have internal predecessors, (326), 38 states have call successors, (38), 14 states have call predecessors, (38), 14 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-19 04:13:38,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 402 transitions. [2023-11-19 04:13:38,259 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 402 transitions. Word has length 38 [2023-11-19 04:13:38,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:13:38,260 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 402 transitions. [2023-11-19 04:13:38,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:13:38,260 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 402 transitions. [2023-11-19 04:13:38,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-19 04:13:38,267 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:13:38,268 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] [2023-11-19 04:13:38,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509c66c0-766f-474b-bcfa-9f17a6f59017/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 04:13:38,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509c66c0-766f-474b-bcfa-9f17a6f59017/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-19 04:13:38,483 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting print_direcErr0ASSERT_VIOLATIONERROR_FUNCTION === [multiconvertErr0ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr1ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-11-19 04:13:38,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:13:38,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1126641871, now seen corresponding path program 1 times [2023-11-19 04:13:38,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:13:38,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215473433] [2023-11-19 04:13:38,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:38,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:13:38,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:38,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:13:38,740 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:13:38,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215473433] [2023-11-19 04:13:38,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215473433] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:13:38,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271683033] [2023-11-19 04:13:38,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:38,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:13:38,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509c66c0-766f-474b-bcfa-9f17a6f59017/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:13:38,743 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509c66c0-766f-474b-bcfa-9f17a6f59017/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:13:38,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509c66c0-766f-474b-bcfa-9f17a6f59017/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 04:13:39,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:39,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:13:39,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:13:39,244 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:13:39,244 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:13:39,266 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:13:39,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271683033] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:13:39,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [912901709] [2023-11-19 04:13:39,272 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2023-11-19 04:13:39,272 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:13:39,273 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:13:39,273 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:13:39,273 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:13:55,249 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 118 for LOIs [2023-11-19 04:13:55,287 INFO L180 IcfgInterpreter]: Interpretation finished