./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --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 bf5e73d985bafa5e008f16fba6fb54da90c4b127699bd918a748611ea9b79793 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:01:35,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:01:35,887 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:01:35,922 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:01:35,922 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:01:35,924 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:01:35,925 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:01:35,928 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:01:35,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:01:35,931 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:01:35,932 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:01:35,933 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:01:35,934 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:01:35,935 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:01:35,937 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:01:35,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:01:35,944 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:01:35,945 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:01:35,951 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:01:35,955 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:01:35,958 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:01:35,959 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:01:35,961 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:01:35,962 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:01:35,965 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:01:35,966 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:01:35,966 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:01:35,967 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:01:35,968 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:01:35,969 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:01:35,969 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:01:35,970 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:01:35,971 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:01:35,972 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:01:35,979 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:01:35,979 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:01:35,980 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:01:35,980 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:01:35,980 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:01:35,981 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:01:35,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:01:35,983 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 02:01:36,033 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:01:36,033 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:01:36,035 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:01:36,035 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:01:36,036 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:01:36,036 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:01:36,036 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:01:36,036 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:01:36,037 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:01:36,037 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:01:36,038 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:01:36,038 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:01:36,039 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:01:36,039 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:01:36,039 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:01:36,040 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:01:36,040 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:01:36,040 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:01:36,040 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:01:36,041 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:01:36,041 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:01:36,041 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:01:36,041 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:01:36,041 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:01:36,042 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:01:36,042 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:01:36,042 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:01:36,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:01:36,043 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:01:36,044 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:01:36,044 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:01:36,045 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:01:36,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:01:36,045 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:01:36,045 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:01:36,046 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:01:36,046 INFO L138 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_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf5e73d985bafa5e008f16fba6fb54da90c4b127699bd918a748611ea9b79793 [2021-11-07 02:01:36,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:01:36,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:01:36,339 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:01:36,341 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:01:36,341 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:01:36,342 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 02:01:36,411 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/data/5a972ad6a/bb97c48479f9420898c1784781dd8ebe/FLAG58667e632 [2021-11-07 02:01:37,179 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:01:37,180 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 02:01:37,219 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/data/5a972ad6a/bb97c48479f9420898c1784781dd8ebe/FLAG58667e632 [2021-11-07 02:01:37,426 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/data/5a972ad6a/bb97c48479f9420898c1784781dd8ebe [2021-11-07 02:01:37,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:01:37,429 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:01:37,430 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:01:37,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:01:37,434 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:01:37,435 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:01:37" (1/1) ... [2021-11-07 02:01:37,436 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@479cd4af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:37, skipping insertion in model container [2021-11-07 02:01:37,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:01:37" (1/1) ... [2021-11-07 02:01:37,442 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:01:37,541 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:01:38,354 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:38,473 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:38,595 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:38,602 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:38,607 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:38,607 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:38,609 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:38,610 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:38,627 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:38,629 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:38,630 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:38,631 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:38,649 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:38,656 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:38,662 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:38,667 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:38,672 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:38,681 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:38,687 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:38,740 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:38,746 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:38,768 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:38,775 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:38,822 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:38,868 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:38,886 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:38,888 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:38,889 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:38,896 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:38,914 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:38,918 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:38,921 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:38,923 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:38,924 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:38,941 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:38,943 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:38,951 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:38,963 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:38,964 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:38,964 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:38,967 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:38,968 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:38,968 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:38,969 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:38,983 WARN L228 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_d59773ca-5344-448b-94f7-cf8f84536153/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i[158797,158810] [2021-11-07 02:01:39,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:01:39,056 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 02:01:39,056 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1216a604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:39, skipping insertion in model container [2021-11-07 02:01:39,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:01:39,057 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:01:39,059 INFO L168 Benchmark]: Toolchain (without parser) took 1628.30 ms. Allocated memory was 96.5 MB in the beginning and 123.7 MB in the end (delta: 27.3 MB). Free memory was 68.7 MB in the beginning and 75.1 MB in the end (delta: -6.4 MB). Peak memory consumption was 38.6 MB. Max. memory is 16.1 GB. [2021-11-07 02:01:39,059 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 96.5 MB. Free memory is still 73.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:01:39,060 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1626.36 ms. Allocated memory was 96.5 MB in the beginning and 123.7 MB in the end (delta: 27.3 MB). Free memory was 68.5 MB in the beginning and 75.1 MB in the end (delta: -6.6 MB). Peak memory consumption was 38.6 MB. Max. memory is 16.1 GB. [2021-11-07 02:01:39,062 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 96.5 MB. Free memory is still 73.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1626.36 ms. Allocated memory was 96.5 MB in the beginning and 123.7 MB in the end (delta: 27.3 MB). Free memory was 68.5 MB in the beginning and 75.1 MB in the end (delta: -6.6 MB). Peak memory consumption was 38.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2825]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --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 bf5e73d985bafa5e008f16fba6fb54da90c4b127699bd918a748611ea9b79793 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:01:41,366 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:01:41,370 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:01:41,421 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:01:41,421 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:01:41,426 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:01:41,428 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:01:41,432 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:01:41,435 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:01:41,443 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:01:41,444 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:01:41,446 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:01:41,446 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:01:41,449 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:01:41,451 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:01:41,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:01:41,457 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:01:41,458 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:01:41,459 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:01:41,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:01:41,469 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:01:41,470 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:01:41,472 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:01:41,474 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:01:41,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:01:41,484 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:01:41,484 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:01:41,487 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:01:41,487 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:01:41,488 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:01:41,489 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:01:41,490 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:01:41,492 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:01:41,492 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:01:41,494 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:01:41,494 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:01:41,495 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:01:41,495 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:01:41,496 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:01:41,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:01:41,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:01:41,499 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 02:01:41,543 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:01:41,543 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:01:41,544 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:01:41,544 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:01:41,544 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:01:41,545 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:01:41,545 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:01:41,545 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:01:41,545 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:01:41,547 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:01:41,547 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:01:41,548 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:01:41,548 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:01:41,548 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:01:41,548 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:01:41,548 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:01:41,549 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:01:41,549 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:01:41,549 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:01:41,549 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:01:41,549 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:01:41,550 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:01:41,550 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:01:41,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:01:41,550 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:01:41,550 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:01:41,550 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:01:41,551 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:01:41,551 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:01:41,551 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:01:41,551 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:01:41,551 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:01:41,552 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf5e73d985bafa5e008f16fba6fb54da90c4b127699bd918a748611ea9b79793 [2021-11-07 02:01:41,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:01:41,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:01:41,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:01:41,992 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:01:41,993 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:01:41,993 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 02:01:42,056 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/data/4137203df/c826fb2ad8e04f5fb7c7788a0ce73307/FLAG42127369b [2021-11-07 02:01:42,926 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:01:42,927 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 02:01:42,970 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/data/4137203df/c826fb2ad8e04f5fb7c7788a0ce73307/FLAG42127369b [2021-11-07 02:01:43,393 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/data/4137203df/c826fb2ad8e04f5fb7c7788a0ce73307 [2021-11-07 02:01:43,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:01:43,397 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:01:43,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:01:43,399 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:01:43,402 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:01:43,403 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:01:43" (1/1) ... [2021-11-07 02:01:43,404 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5161995e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:43, skipping insertion in model container [2021-11-07 02:01:43,404 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:01:43" (1/1) ... [2021-11-07 02:01:43,411 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:01:43,528 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:01:44,542 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:44,876 WARN L228 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_d59773ca-5344-448b-94f7-cf8f84536153/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i[158797,158810] [2021-11-07 02:01:44,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:01:44,985 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:01:45,029 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:01:45,309 WARN L228 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_d59773ca-5344-448b-94f7-cf8f84536153/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i[158797,158810] [2021-11-07 02:01:45,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:01:45,363 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:01:45,641 WARN L228 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_d59773ca-5344-448b-94f7-cf8f84536153/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i[158797,158810] [2021-11-07 02:01:45,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:01:45,759 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:01:45,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:45 WrapperNode [2021-11-07 02:01:45,760 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:01:45,761 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:01:45,761 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:01:45,761 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:01:45,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:45" (1/1) ... [2021-11-07 02:01:45,861 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:45" (1/1) ... [2021-11-07 02:01:47,597 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:01:47,598 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:01:47,598 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:01:47,598 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:01:47,607 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:45" (1/1) ... [2021-11-07 02:01:47,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:45" (1/1) ... [2021-11-07 02:01:48,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:45" (1/1) ... [2021-11-07 02:01:48,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:45" (1/1) ... [2021-11-07 02:01:49,413 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:45" (1/1) ... [2021-11-07 02:01:49,598 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:45" (1/1) ... [2021-11-07 02:01:49,670 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:45" (1/1) ... [2021-11-07 02:01:50,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:01:50,069 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:01:50,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:01:50,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:01:50,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:45" (1/1) ... [2021-11-07 02:01:50,081 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:01:50,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:01:50,104 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:01:50,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:01:50,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 02:01:50,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 02:01:50,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 02:01:50,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 02:01:50,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 02:01:50,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 02:01:50,155 INFO L130 BoogieDeclarations]: Found specification of procedure printer_soft_reset [2021-11-07 02:01:50,155 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_soft_reset [2021-11-07 02:01:50,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:01:50,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 02:01:50,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 02:01:50,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 02:01:50,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 02:01:50,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 02:01:50,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 02:01:50,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 02:01:50,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 02:01:50,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:01:50,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 02:01:50,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 02:01:50,157 INFO L130 BoogieDeclarations]: Found specification of procedure set_printer_interface [2021-11-07 02:01:50,157 INFO L138 BoogieDeclarations]: Found implementation of procedure set_printer_interface [2021-11-07 02:01:50,157 INFO L130 BoogieDeclarations]: Found specification of procedure set_interface [2021-11-07 02:01:50,157 INFO L138 BoogieDeclarations]: Found implementation of procedure set_interface [2021-11-07 02:01:50,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 02:01:50,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 02:01:50,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 02:01:50,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 02:01:50,158 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-07 02:01:50,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-07 02:01:50,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 02:01:50,159 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-07 02:01:50,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 02:01:50,159 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 02:01:50,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 02:01:50,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 02:01:50,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 02:01:50,160 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_enable [2021-11-07 02:01:50,160 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_enable [2021-11-07 02:01:50,160 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup [2021-11-07 02:01:50,161 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup [2021-11-07 02:01:50,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 02:01:50,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:01:50,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:04:20,288 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:04:20,289 INFO L299 CfgBuilder]: Removed 12491 assume(true) statements. [2021-11-07 02:04:20,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:04:20 BoogieIcfgContainer [2021-11-07 02:04:20,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:04:20,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:04:20,306 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:04:20,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:04:20,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:01:43" (1/3) ... [2021-11-07 02:04:20,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b54409f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:04:20, skipping insertion in model container [2021-11-07 02:04:20,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:45" (2/3) ... [2021-11-07 02:04:20,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b54409f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:04:20, skipping insertion in model container [2021-11-07 02:04:20,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:04:20" (3/3) ... [2021-11-07 02:04:20,314 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 02:04:20,326 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:04:20,326 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-11-07 02:04:20,421 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:04:20,427 INFO L339 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=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 02:04:20,428 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-11-07 02:04:20,598 INFO L276 IsEmpty]: Start isEmpty. Operand has 9624 states, 9588 states have (on average 1.376616604088444) internal successors, (13199), 9607 states have internal predecessors, (13199), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 02:04:20,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 02:04:20,607 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:04:20,608 INFO L513 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:04:20,609 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 02:04:20,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:04:20,616 INFO L85 PathProgramCache]: Analyzing trace with hash -294281411, now seen corresponding path program 1 times [2021-11-07 02:04:20,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:04:20,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [85702845] [2021-11-07 02:04:20,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:04:20,639 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:04:20,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:04:20,643 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:04:20,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:04:23,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:04:23,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 1277 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 02:04:23,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:04:24,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:04:24,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:04:24,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:04:24,448 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:04:24,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [85702845] [2021-11-07 02:04:24,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [85702845] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:04:24,449 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:04:24,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:04:24,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259320207] [2021-11-07 02:04:24,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 02:04:24,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:04:24,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 02:04:24,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:04:24,504 INFO L87 Difference]: Start difference. First operand has 9624 states, 9588 states have (on average 1.376616604088444) internal successors, (13199), 9607 states have internal predecessors, (13199), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:04:24,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:04:24,954 INFO L93 Difference]: Finished difference Result 19244 states and 26443 transitions. [2021-11-07 02:04:24,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 02:04:24,956 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-07 02:04:24,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:04:25,055 INFO L225 Difference]: With dead ends: 19244 [2021-11-07 02:04:25,055 INFO L226 Difference]: Without dead ends: 9614 [2021-11-07 02:04:25,106 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:04:25,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9614 states. [2021-11-07 02:04:25,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9614 to 9614. [2021-11-07 02:04:25,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9614 states, 9579 states have (on average 1.361206806556008) internal successors, (13039), 9597 states have internal predecessors, (13039), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 02:04:25,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9614 states to 9614 states and 13059 transitions. [2021-11-07 02:04:25,627 INFO L78 Accepts]: Start accepts. Automaton has 9614 states and 13059 transitions. Word has length 51 [2021-11-07 02:04:25,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:04:25,628 INFO L470 AbstractCegarLoop]: Abstraction has 9614 states and 13059 transitions. [2021-11-07 02:04:25,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:04:25,630 INFO L276 IsEmpty]: Start isEmpty. Operand 9614 states and 13059 transitions. [2021-11-07 02:04:25,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 02:04:25,636 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:04:25,636 INFO L513 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:04:25,679 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-07 02:04:25,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:04:25,838 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 02:04:25,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:04:25,839 INFO L85 PathProgramCache]: Analyzing trace with hash -49589517, now seen corresponding path program 1 times [2021-11-07 02:04:25,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:04:25,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [265462132] [2021-11-07 02:04:25,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:04:25,844 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:04:25,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:04:25,845 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:04:25,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:04:28,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:04:28,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 1277 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:04:28,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:04:29,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:04:29,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:04:29,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:04:29,277 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:04:29,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [265462132] [2021-11-07 02:04:29,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [265462132] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:04:29,278 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:04:29,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:04:29,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173111848] [2021-11-07 02:04:29,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:04:29,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:04:29,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:04:29,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:04:29,287 INFO L87 Difference]: Start difference. First operand 9614 states and 13059 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:04:30,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:04:30,031 INFO L93 Difference]: Finished difference Result 19208 states and 26105 transitions. [2021-11-07 02:04:30,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:04:30,032 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-07 02:04:30,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:04:30,110 INFO L225 Difference]: With dead ends: 19208 [2021-11-07 02:04:30,110 INFO L226 Difference]: Without dead ends: 9622 [2021-11-07 02:04:30,143 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:04:30,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9622 states. [2021-11-07 02:04:30,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9622 to 9622. [2021-11-07 02:04:30,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9622 states, 9587 states have (on average 1.3609053927193073) internal successors, (13047), 9605 states have internal predecessors, (13047), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 02:04:30,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9622 states to 9622 states and 13067 transitions. [2021-11-07 02:04:30,493 INFO L78 Accepts]: Start accepts. Automaton has 9622 states and 13067 transitions. Word has length 51 [2021-11-07 02:04:30,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:04:30,494 INFO L470 AbstractCegarLoop]: Abstraction has 9622 states and 13067 transitions. [2021-11-07 02:04:30,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:04:30,497 INFO L276 IsEmpty]: Start isEmpty. Operand 9622 states and 13067 transitions. [2021-11-07 02:04:30,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 02:04:30,506 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:04:30,507 INFO L513 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1] [2021-11-07 02:04:30,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:04:30,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:04:30,732 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 02:04:30,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:04:30,733 INFO L85 PathProgramCache]: Analyzing trace with hash 419378099, now seen corresponding path program 1 times [2021-11-07 02:04:30,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:04:30,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [689119217] [2021-11-07 02:04:30,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:04:30,739 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:04:30,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:04:30,741 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:04:30,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:04:33,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:04:33,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 1317 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:04:33,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:04:34,152 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:04:34,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:04:34,771 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:04:34,772 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:04:34,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [689119217] [2021-11-07 02:04:34,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [689119217] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:04:34,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1926999826] [2021-11-07 02:04:34,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:04:34,773 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:04:34,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:04:34,792 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:04:34,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-07 02:04:36,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:04:36,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 1317 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:04:36,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:04:37,147 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-07 02:04:37,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:04:37,587 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-07 02:04:37,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1926999826] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:04:37,588 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:04:37,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 02:04:37,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065187900] [2021-11-07 02:04:37,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:04:37,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:04:37,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:04:37,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:04:37,591 INFO L87 Difference]: Start difference. First operand 9622 states and 13067 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:04:38,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:04:38,226 INFO L93 Difference]: Finished difference Result 19151 states and 26035 transitions. [2021-11-07 02:04:38,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:04:38,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-07 02:04:38,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:04:38,348 INFO L225 Difference]: With dead ends: 19151 [2021-11-07 02:04:38,348 INFO L226 Difference]: Without dead ends: 19119 [2021-11-07 02:04:38,361 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:04:38,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19119 states. [2021-11-07 02:04:38,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19119 to 19115. [2021-11-07 02:04:39,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19115 states, 19066 states have (on average 1.3615336200566452) internal successors, (25959), 19082 states have internal predecessors, (25959), 20 states have call successors, (20), 12 states have call predecessors, (20), 12 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-07 02:04:39,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19115 states to 19115 states and 25999 transitions. [2021-11-07 02:04:39,071 INFO L78 Accepts]: Start accepts. Automaton has 19115 states and 25999 transitions. Word has length 59 [2021-11-07 02:04:39,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:04:39,073 INFO L470 AbstractCegarLoop]: Abstraction has 19115 states and 25999 transitions. [2021-11-07 02:04:39,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:04:39,074 INFO L276 IsEmpty]: Start isEmpty. Operand 19115 states and 25999 transitions. [2021-11-07 02:04:39,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 02:04:39,077 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:04:39,077 INFO L513 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:04:39,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:04:39,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:04:39,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:04:39,500 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 02:04:39,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:04:39,500 INFO L85 PathProgramCache]: Analyzing trace with hash 115850846, now seen corresponding path program 1 times [2021-11-07 02:04:39,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:04:39,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1712048508] [2021-11-07 02:04:39,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:04:39,504 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:04:39,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:04:39,507 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:04:39,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:04:42,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:04:42,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 1318 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:04:42,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:04:43,043 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:04:43,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:04:43,592 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:04:43,592 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:04:43,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1712048508] [2021-11-07 02:04:43,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1712048508] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:04:43,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1995444068] [2021-11-07 02:04:43,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:04:43,593 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:04:43,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:04:43,605 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:04:43,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-07 02:04:45,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:04:45,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 1318 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:04:45,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:04:45,830 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-07 02:04:45,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:04:46,011 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-07 02:04:46,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1995444068] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:04:46,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:04:46,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 02:04:46,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049128891] [2021-11-07 02:04:46,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:04:46,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:04:46,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:04:46,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:04:46,013 INFO L87 Difference]: Start difference. First operand 19115 states and 25999 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:04:50,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:04:50,758 INFO L93 Difference]: Finished difference Result 75980 states and 103467 transitions. [2021-11-07 02:04:50,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:04:50,760 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-07 02:04:50,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:04:51,044 INFO L225 Difference]: With dead ends: 75980 [2021-11-07 02:04:51,044 INFO L226 Difference]: Without dead ends: 56915 [2021-11-07 02:04:51,119 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:04:51,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56915 states. [2021-11-07 02:04:52,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56915 to 56915. [2021-11-07 02:04:53,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56915 states, 56802 states have (on average 1.3625400514066406) internal successors, (77395), 56818 states have internal predecessors, (77395), 60 states have call successors, (60), 36 states have call predecessors, (60), 36 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2021-11-07 02:04:53,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56915 states to 56915 states and 77515 transitions. [2021-11-07 02:04:53,254 INFO L78 Accepts]: Start accepts. Automaton has 56915 states and 77515 transitions. Word has length 60 [2021-11-07 02:04:53,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:04:53,255 INFO L470 AbstractCegarLoop]: Abstraction has 56915 states and 77515 transitions. [2021-11-07 02:04:53,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:04:53,256 INFO L276 IsEmpty]: Start isEmpty. Operand 56915 states and 77515 transitions. [2021-11-07 02:04:53,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 02:04:53,258 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:04:53,259 INFO L513 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:04:53,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:04:53,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:04:53,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:04:53,684 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 02:04:53,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:04:53,685 INFO L85 PathProgramCache]: Analyzing trace with hash -792806327, now seen corresponding path program 1 times [2021-11-07 02:04:53,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:04:53,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [511674432] [2021-11-07 02:04:53,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:04:53,688 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:04:53,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:04:53,691 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:04:53,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 02:04:56,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:04:56,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 1313 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:04:56,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:04:57,078 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:04:57,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:04:57,606 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:04:57,607 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:04:57,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [511674432] [2021-11-07 02:04:57,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [511674432] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:04:57,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1764292508] [2021-11-07 02:04:57,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:04:57,607 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:04:57,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:04:57,608 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:04:57,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-07 02:04:59,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:04:59,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 1313 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:04:59,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:05:00,043 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-07 02:05:00,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:05:00,455 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-07 02:05:00,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1764292508] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:05:00,455 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:05:00,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 02:05:00,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953096906] [2021-11-07 02:05:00,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:05:00,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:05:00,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:05:00,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:05:00,458 INFO L87 Difference]: Start difference. First operand 56915 states and 77515 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:05:04,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:05:04,413 INFO L93 Difference]: Finished difference Result 170611 states and 232405 transitions. [2021-11-07 02:05:04,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:05:04,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 02:05:04,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:05:05,088 INFO L225 Difference]: With dead ends: 170611 [2021-11-07 02:05:05,088 INFO L226 Difference]: Without dead ends: 113746 [2021-11-07 02:05:05,186 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:05:05,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113746 states. [2021-11-07 02:05:08,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113746 to 113726. [2021-11-07 02:05:08,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113726 states, 113517 states have (on average 1.3626945743809298) internal successors, (154689), 113533 states have internal predecessors, (154689), 120 states have call successors, (120), 72 states have call predecessors, (120), 72 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2021-11-07 02:05:09,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113726 states to 113726 states and 154929 transitions. [2021-11-07 02:05:09,550 INFO L78 Accepts]: Start accepts. Automaton has 113726 states and 154929 transitions. Word has length 63 [2021-11-07 02:05:09,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:05:09,552 INFO L470 AbstractCegarLoop]: Abstraction has 113726 states and 154929 transitions. [2021-11-07 02:05:09,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:05:09,553 INFO L276 IsEmpty]: Start isEmpty. Operand 113726 states and 154929 transitions. [2021-11-07 02:05:09,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 02:05:09,555 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:05:09,556 INFO L513 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:05:09,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 02:05:09,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-07 02:05:09,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:05:09,972 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 02:05:09,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:05:09,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1579950952, now seen corresponding path program 1 times [2021-11-07 02:05:09,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:05:09,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1769016961] [2021-11-07 02:05:09,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:05:09,977 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:05:09,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:05:09,980 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:05:10,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 02:05:13,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:05:13,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 1349 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:05:13,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:05:13,895 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:05:13,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:05:14,389 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:05:14,389 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:05:14,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1769016961] [2021-11-07 02:05:14,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1769016961] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:05:14,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [108887424] [2021-11-07 02:05:14,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:05:14,390 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:05:14,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:05:14,391 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:05:14,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-07 02:05:16,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:05:16,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 1349 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:05:16,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:05:17,017 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-07 02:05:17,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:05:17,503 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-07 02:05:17,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [108887424] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:05:17,504 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:05:17,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 02:05:17,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379898097] [2021-11-07 02:05:17,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:05:17,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:05:17,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:05:17,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:05:17,506 INFO L87 Difference]: Start difference. First operand 113726 states and 154929 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:05:23,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:05:23,790 INFO L93 Difference]: Finished difference Result 341061 states and 464664 transitions. [2021-11-07 02:05:23,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:05:23,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-07 02:05:23,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:05:24,451 INFO L225 Difference]: With dead ends: 341061 [2021-11-07 02:05:24,451 INFO L226 Difference]: Without dead ends: 227383 [2021-11-07 02:05:24,662 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:05:24,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227383 states. [2021-11-07 02:05:33,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227383 to 227346. [2021-11-07 02:05:33,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227346 states, 226945 states have (on average 1.3627707153715658) internal successors, (309274), 226961 states have internal predecessors, (309274), 240 states have call successors, (240), 144 states have call predecessors, (240), 144 states have return successors, (240), 240 states have call predecessors, (240), 240 states have call successors, (240) [2021-11-07 02:05:35,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227346 states to 227346 states and 309754 transitions. [2021-11-07 02:05:35,431 INFO L78 Accepts]: Start accepts. Automaton has 227346 states and 309754 transitions. Word has length 72 [2021-11-07 02:05:35,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:05:35,437 INFO L470 AbstractCegarLoop]: Abstraction has 227346 states and 309754 transitions. [2021-11-07 02:05:35,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:05:35,437 INFO L276 IsEmpty]: Start isEmpty. Operand 227346 states and 309754 transitions. [2021-11-07 02:05:35,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-07 02:05:35,440 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:05:35,440 INFO L513 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:05:35,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 02:05:35,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-07 02:05:35,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:05:35,844 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 02:05:35,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:05:35,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1857629618, now seen corresponding path program 1 times [2021-11-07 02:05:35,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:05:35,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [136569897] [2021-11-07 02:05:35,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:05:35,859 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:05:35,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:05:35,860 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:05:35,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 02:05:38,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:05:38,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 1351 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:05:38,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:05:39,356 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:05:39,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:05:39,883 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:05:39,884 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:05:39,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [136569897] [2021-11-07 02:05:39,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [136569897] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:05:39,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1089301052] [2021-11-07 02:05:39,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:05:39,885 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:05:39,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:05:39,886 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:05:39,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-07 02:05:43,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:05:43,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 1351 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:05:43,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:05:43,594 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:05:43,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:05:43,859 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:05:43,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1089301052] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:05:43,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616557571] [2021-11-07 02:05:43,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:05:43,860 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:05:43,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:05:43,869 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:05:43,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59773ca-5344-448b-94f7-cf8f84536153/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-07 02:05:45,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:05:45,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 1351 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 02:05:45,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:05:45,964 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 02:05:45,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:05:46,192 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 02:05:46,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616557571] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:05:46,192 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 02:05:46,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 10 [2021-11-07 02:05:46,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020901824] [2021-11-07 02:05:46,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 02:05:46,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:05:46,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 02:05:46,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:05:46,195 INFO L87 Difference]: Start difference. First operand 227346 states and 309754 transitions. Second operand has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)