./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--r8152.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74fece-3af4-4a9c-87e7-127635dbf8e7/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74fece-3af4-4a9c-87e7-127635dbf8e7/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74fece-3af4-4a9c-87e7-127635dbf8e7/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74fece-3af4-4a9c-87e7-127635dbf8e7/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--r8152.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74fece-3af4-4a9c-87e7-127635dbf8e7/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74fece-3af4-4a9c-87e7-127635dbf8e7/bin/utaipan-7li7fVZpFI --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 5b9b8810066c6b805a125dba67c1c1409161534a09c0fedd6964ff3375355a5b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 01:43:14,901 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:43:14,904 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:43:14,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:43:14,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:43:14,956 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:43:14,958 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:43:14,963 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:43:14,965 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:43:14,966 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:43:14,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:43:14,968 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:43:14,968 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:43:14,969 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:43:14,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:43:14,971 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:43:14,972 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:43:14,973 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:43:14,975 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:43:14,976 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:43:14,978 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:43:14,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:43:14,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:43:14,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:43:14,984 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:43:14,984 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:43:14,985 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:43:14,986 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:43:14,986 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:43:14,987 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:43:14,987 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:43:14,988 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:43:14,989 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:43:14,990 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:43:14,991 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:43:14,991 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:43:14,992 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:43:14,992 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:43:14,992 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:43:14,993 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:43:14,994 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:43:14,999 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74fece-3af4-4a9c-87e7-127635dbf8e7/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 01:43:15,029 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:43:15,030 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:43:15,030 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:43:15,031 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:43:15,032 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:43:15,032 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:43:15,032 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:43:15,032 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:43:15,032 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:43:15,033 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:43:15,034 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:43:15,034 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:43:15,034 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:43:15,034 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:43:15,034 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:43:15,035 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:43:15,035 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:43:15,035 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:43:15,036 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:43:15,036 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:43:15,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:43:15,036 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:43:15,037 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:43:15,038 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:43:15,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:43:15,038 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:43:15,039 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:43:15,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:43:15,039 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:43:15,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:43:15,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:43:15,040 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:43:15,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:43:15,040 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:43:15,040 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:43:15,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:43:15,041 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:43:15,042 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:43:15,042 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_5e74fece-3af4-4a9c-87e7-127635dbf8e7/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74fece-3af4-4a9c-87e7-127635dbf8e7/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b9b8810066c6b805a125dba67c1c1409161534a09c0fedd6964ff3375355a5b [2022-11-03 01:43:15,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:43:15,397 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:43:15,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:43:15,401 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:43:15,402 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:43:15,403 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74fece-3af4-4a9c-87e7-127635dbf8e7/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--r8152.ko-entry_point.cil.out.i [2022-11-03 01:43:15,481 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74fece-3af4-4a9c-87e7-127635dbf8e7/bin/utaipan-7li7fVZpFI/data/19ec8b1ba/70e2e851a75645c1ae6e075df0376163/FLAG4244eda33 [2022-11-03 01:43:16,507 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:43:16,509 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74fece-3af4-4a9c-87e7-127635dbf8e7/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--r8152.ko-entry_point.cil.out.i [2022-11-03 01:43:16,561 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74fece-3af4-4a9c-87e7-127635dbf8e7/bin/utaipan-7li7fVZpFI/data/19ec8b1ba/70e2e851a75645c1ae6e075df0376163/FLAG4244eda33 [2022-11-03 01:43:16,841 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74fece-3af4-4a9c-87e7-127635dbf8e7/bin/utaipan-7li7fVZpFI/data/19ec8b1ba/70e2e851a75645c1ae6e075df0376163 [2022-11-03 01:43:16,845 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:43:16,847 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:43:16,850 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:43:16,851 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:43:16,855 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:43:16,857 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:43:16" (1/1) ... [2022-11-03 01:43:16,858 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e836574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:16, skipping insertion in model container [2022-11-03 01:43:16,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:43:16" (1/1) ... [2022-11-03 01:43:16,866 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:43:17,039 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:43:18,447 WARN L230 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_5e74fece-3af4-4a9c-87e7-127635dbf8e7/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--r8152.ko-entry_point.cil.out.i[196184,196197] [2022-11-03 01:43:19,820 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:43:19,881 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:43:20,073 WARN L230 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_5e74fece-3af4-4a9c-87e7-127635dbf8e7/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--r8152.ko-entry_point.cil.out.i[196184,196197] [2022-11-03 01:43:20,535 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:43:20,745 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:43:20,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:20 WrapperNode [2022-11-03 01:43:20,746 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:43:20,747 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:43:20,747 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:43:20,747 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:43:20,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:20" (1/1) ... [2022-11-03 01:43:20,853 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:20" (1/1) ... [2022-11-03 01:43:20,990 INFO L138 Inliner]: procedures = 372, calls = 2044, calls flagged for inlining = 175, calls inlined = 127, statements flattened = 4346 [2022-11-03 01:43:20,990 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:43:20,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:43:20,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:43:20,992 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:43:21,002 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:20" (1/1) ... [2022-11-03 01:43:21,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:20" (1/1) ... [2022-11-03 01:43:21,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:20" (1/1) ... [2022-11-03 01:43:21,066 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:20" (1/1) ... [2022-11-03 01:43:21,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:20" (1/1) ... [2022-11-03 01:43:21,217 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:20" (1/1) ... [2022-11-03 01:43:21,251 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:20" (1/1) ... [2022-11-03 01:43:21,269 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:20" (1/1) ... [2022-11-03 01:43:21,351 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:43:21,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:43:21,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:43:21,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:43:21,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:20" (1/1) ... [2022-11-03 01:43:21,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:43:21,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74fece-3af4-4a9c-87e7-127635dbf8e7/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:43:21,386 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74fece-3af4-4a9c-87e7-127635dbf8e7/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:43:21,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74fece-3af4-4a9c-87e7-127635dbf8e7/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:43:21,438 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-03 01:43:21,438 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-03 01:43:21,438 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-11-03 01:43:21,439 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-11-03 01:43:21,439 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-03 01:43:21,439 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-03 01:43:21,439 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-11-03 01:43:21,439 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-11-03 01:43:21,440 INFO L130 BoogieDeclarations]: Found specification of procedure device_set_wakeup_enable [2022-11-03 01:43:21,440 INFO L138 BoogieDeclarations]: Found implementation of procedure device_set_wakeup_enable [2022-11-03 01:43:21,440 INFO L130 BoogieDeclarations]: Found specification of procedure ocp_write_byte [2022-11-03 01:43:21,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ocp_write_byte [2022-11-03 01:43:21,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 01:43:21,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 01:43:21,441 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 01:43:21,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 01:43:21,441 INFO L130 BoogieDeclarations]: Found specification of procedure rtl_work_func_t [2022-11-03 01:43:21,441 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl_work_func_t [2022-11-03 01:43:21,441 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2022-11-03 01:43:21,441 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2022-11-03 01:43:21,442 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-03 01:43:21,442 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-03 01:43:21,442 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-03 01:43:21,442 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-03 01:43:21,442 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 01:43:21,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 01:43:21,443 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8152_disconnect [2022-11-03 01:43:21,443 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8152_disconnect [2022-11-03 01:43:21,443 INFO L130 BoogieDeclarations]: Found specification of procedure rtl_enable [2022-11-03 01:43:21,443 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl_enable [2022-11-03 01:43:21,444 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-11-03 01:43:21,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-11-03 01:43:21,444 INFO L130 BoogieDeclarations]: Found specification of procedure set_carrier [2022-11-03 01:43:21,444 INFO L138 BoogieDeclarations]: Found implementation of procedure set_carrier [2022-11-03 01:43:21,444 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8152_set_speed [2022-11-03 01:43:21,445 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8152_set_speed [2022-11-03 01:43:21,445 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_get_interface [2022-11-03 01:43:21,445 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_get_interface [2022-11-03 01:43:21,445 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_head_init [2022-11-03 01:43:21,445 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_head_init [2022-11-03 01:43:21,445 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-11-03 01:43:21,446 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-11-03 01:43:21,446 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 01:43:21,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 01:43:21,446 INFO L130 BoogieDeclarations]: Found specification of procedure pla_ocp_read [2022-11-03 01:43:21,446 INFO L138 BoogieDeclarations]: Found implementation of procedure pla_ocp_read [2022-11-03 01:43:21,447 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-03 01:43:21,447 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-03 01:43:21,448 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-03 01:43:21,449 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-03 01:43:21,449 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8152_nic_reset [2022-11-03 01:43:21,450 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8152_nic_reset [2022-11-03 01:43:21,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 01:43:21,450 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 01:43:21,450 INFO L130 BoogieDeclarations]: Found specification of procedure ocp_reg_read [2022-11-03 01:43:21,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ocp_reg_read [2022-11-03 01:43:21,451 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 01:43:21,451 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 01:43:21,451 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 01:43:21,452 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 01:43:21,452 INFO L130 BoogieDeclarations]: Found specification of procedure generic_ocp_write [2022-11-03 01:43:21,452 INFO L138 BoogieDeclarations]: Found implementation of procedure generic_ocp_write [2022-11-03 01:43:21,452 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_schedule [2022-11-03 01:43:21,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_schedule [2022-11-03 01:43:21,453 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 01:43:21,453 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 01:43:21,453 INFO L130 BoogieDeclarations]: Found specification of procedure rtl_set_eee_plus [2022-11-03 01:43:21,453 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl_set_eee_plus [2022-11-03 01:43:21,453 INFO L130 BoogieDeclarations]: Found specification of procedure ocp_write_dword [2022-11-03 01:43:21,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ocp_write_dword [2022-11-03 01:43:21,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 01:43:21,454 INFO L130 BoogieDeclarations]: Found specification of procedure tx_agg_align [2022-11-03 01:43:21,455 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_agg_align [2022-11-03 01:43:21,455 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 01:43:21,455 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 01:43:21,455 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2022-11-03 01:43:21,456 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2022-11-03 01:43:21,456 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-03 01:43:21,456 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-03 01:43:21,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 01:43:21,457 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-11-03 01:43:21,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-11-03 01:43:21,457 INFO L130 BoogieDeclarations]: Found specification of procedure pla_ocp_write [2022-11-03 01:43:21,458 INFO L138 BoogieDeclarations]: Found implementation of procedure pla_ocp_write [2022-11-03 01:43:21,458 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-03 01:43:21,458 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-03 01:43:21,458 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-03 01:43:21,458 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-03 01:43:21,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2022-11-03 01:43:21,460 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 01:43:21,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 01:43:21,460 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8152_get_speed [2022-11-03 01:43:21,461 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8152_get_speed [2022-11-03 01:43:21,461 INFO L130 BoogieDeclarations]: Found specification of procedure ocp_reg_write [2022-11-03 01:43:21,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ocp_reg_write [2022-11-03 01:43:21,461 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8152_tx_timeout [2022-11-03 01:43:21,461 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8152_tx_timeout [2022-11-03 01:43:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8152_disable [2022-11-03 01:43:21,462 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8152_disable [2022-11-03 01:43:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure ocp_read_dword [2022-11-03 01:43:21,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ocp_read_dword [2022-11-03 01:43:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 01:43:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 01:43:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure rx_agg_align [2022-11-03 01:43:21,463 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_agg_align [2022-11-03 01:43:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure __rtl_get_wol [2022-11-03 01:43:21,464 INFO L138 BoogieDeclarations]: Found implementation of procedure __rtl_get_wol [2022-11-03 01:43:21,464 INFO L130 BoogieDeclarations]: Found specification of procedure r8152_mdio_write [2022-11-03 01:43:21,464 INFO L138 BoogieDeclarations]: Found implementation of procedure r8152_mdio_write [2022-11-03 01:43:21,465 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2022-11-03 01:43:21,465 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2022-11-03 01:43:21,468 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 01:43:21,468 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 01:43:21,468 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2022-11-03 01:43:21,468 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2022-11-03 01:43:21,469 INFO L130 BoogieDeclarations]: Found specification of procedure ldv___skb_dequeue_14 [2022-11-03 01:43:21,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv___skb_dequeue_14 [2022-11-03 01:43:21,470 INFO L130 BoogieDeclarations]: Found specification of procedure r8152_submit_rx [2022-11-03 01:43:21,470 INFO L138 BoogieDeclarations]: Found implementation of procedure r8152_submit_rx [2022-11-03 01:43:21,470 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 01:43:21,476 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 01:43:21,476 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-11-03 01:43:21,476 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-11-03 01:43:21,477 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 01:43:21,477 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 01:43:21,477 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-03 01:43:21,477 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-03 01:43:21,477 INFO L130 BoogieDeclarations]: Found specification of procedure __rtl_set_wol [2022-11-03 01:43:21,477 INFO L138 BoogieDeclarations]: Found implementation of procedure __rtl_set_wol [2022-11-03 01:43:21,477 INFO L130 BoogieDeclarations]: Found specification of procedure r8152_power_cut_en [2022-11-03 01:43:21,478 INFO L138 BoogieDeclarations]: Found implementation of procedure r8152_power_cut_en [2022-11-03 01:43:21,478 INFO L130 BoogieDeclarations]: Found specification of procedure ocp_write_word [2022-11-03 01:43:21,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ocp_write_word [2022-11-03 01:43:21,478 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-11-03 01:43:21,478 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-11-03 01:43:21,478 INFO L130 BoogieDeclarations]: Found specification of procedure r8152b_enable_fc [2022-11-03 01:43:21,478 INFO L138 BoogieDeclarations]: Found implementation of procedure r8152b_enable_fc [2022-11-03 01:43:21,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 01:43:21,479 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-03 01:43:21,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-03 01:43:21,479 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-03 01:43:21,479 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-03 01:43:21,479 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-03 01:43:21,479 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-03 01:43:21,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 01:43:21,480 INFO L130 BoogieDeclarations]: Found specification of procedure usb_mark_last_busy [2022-11-03 01:43:21,480 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_mark_last_busy [2022-11-03 01:43:21,480 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface [2022-11-03 01:43:21,480 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface [2022-11-03 01:43:21,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 01:43:21,480 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 01:43:21,481 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 01:43:21,481 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_splice_init [2022-11-03 01:43:21,481 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_splice_init [2022-11-03 01:43:21,481 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_disable [2022-11-03 01:43:21,481 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_disable [2022-11-03 01:43:21,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 01:43:21,481 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 01:43:21,482 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-11-03 01:43:21,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-11-03 01:43:21,482 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_node [2022-11-03 01:43:21,482 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_node [2022-11-03 01:43:21,482 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-03 01:43:21,482 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-03 01:43:21,482 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-03 01:43:21,483 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-03 01:43:21,483 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-03 01:43:21,483 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-03 01:43:21,483 INFO L130 BoogieDeclarations]: Found specification of procedure sram_read [2022-11-03 01:43:21,483 INFO L138 BoogieDeclarations]: Found implementation of procedure sram_read [2022-11-03 01:43:21,483 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 01:43:21,483 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 01:43:21,484 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-03 01:43:21,484 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-03 01:43:21,484 INFO L130 BoogieDeclarations]: Found specification of procedure r8153_teredo_off [2022-11-03 01:43:21,484 INFO L138 BoogieDeclarations]: Found implementation of procedure r8153_teredo_off [2022-11-03 01:43:21,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 01:43:21,484 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2022-11-03 01:43:21,484 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2022-11-03 01:43:21,485 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8152_open [2022-11-03 01:43:21,485 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8152_open [2022-11-03 01:43:21,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 01:43:21,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 01:43:21,485 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface_async [2022-11-03 01:43:21,487 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface_async [2022-11-03 01:43:21,487 INFO L130 BoogieDeclarations]: Found specification of procedure rtl_runtime_suspend_enable [2022-11-03 01:43:21,487 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl_runtime_suspend_enable [2022-11-03 01:43:21,487 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8152_close [2022-11-03 01:43:21,488 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8152_close [2022-11-03 01:43:21,488 INFO L130 BoogieDeclarations]: Found specification of procedure r8153_power_cut_en [2022-11-03 01:43:21,488 INFO L138 BoogieDeclarations]: Found implementation of procedure r8153_power_cut_en [2022-11-03 01:43:21,488 INFO L130 BoogieDeclarations]: Found specification of procedure r8153_u1u2en [2022-11-03 01:43:21,488 INFO L138 BoogieDeclarations]: Found implementation of procedure r8153_u1u2en [2022-11-03 01:43:21,488 INFO L130 BoogieDeclarations]: Found specification of procedure generic_ocp_read [2022-11-03 01:43:21,488 INFO L138 BoogieDeclarations]: Found implementation of procedure generic_ocp_read [2022-11-03 01:43:21,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 01:43:21,489 INFO L130 BoogieDeclarations]: Found specification of procedure r8153_enable_aldps [2022-11-03 01:43:21,489 INFO L138 BoogieDeclarations]: Found implementation of procedure r8153_enable_aldps [2022-11-03 01:43:21,489 INFO L130 BoogieDeclarations]: Found specification of procedure rtl_tally_reset [2022-11-03 01:43:21,489 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl_tally_reset [2022-11-03 01:43:21,489 INFO L130 BoogieDeclarations]: Found specification of procedure rtl_drop_queued_tx [2022-11-03 01:43:21,489 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl_drop_queued_tx [2022-11-03 01:43:21,489 INFO L130 BoogieDeclarations]: Found specification of procedure r8152_mdio_read [2022-11-03 01:43:21,490 INFO L138 BoogieDeclarations]: Found implementation of procedure r8152_mdio_read [2022-11-03 01:43:21,490 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8152_resume [2022-11-03 01:43:21,490 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8152_resume [2022-11-03 01:43:21,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:43:21,490 INFO L130 BoogieDeclarations]: Found specification of procedure rxdy_gated_en [2022-11-03 01:43:21,490 INFO L138 BoogieDeclarations]: Found implementation of procedure rxdy_gated_en [2022-11-03 01:43:21,490 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 01:43:21,491 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 01:43:21,491 INFO L130 BoogieDeclarations]: Found specification of procedure rtl_clear_bp [2022-11-03 01:43:21,491 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl_clear_bp [2022-11-03 01:43:21,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 01:43:21,491 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 01:43:21,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 01:43:21,491 INFO L130 BoogieDeclarations]: Found specification of procedure r8152b_enable_aldps [2022-11-03 01:43:21,492 INFO L138 BoogieDeclarations]: Found implementation of procedure r8152b_enable_aldps [2022-11-03 01:43:21,492 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-03 01:43:21,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-03 01:43:21,492 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2022-11-03 01:43:21,492 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2022-11-03 01:43:21,492 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_splice [2022-11-03 01:43:21,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_splice [2022-11-03 01:43:21,492 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2022-11-03 01:43:21,493 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2022-11-03 01:43:21,493 INFO L130 BoogieDeclarations]: Found specification of procedure free_all_mem [2022-11-03 01:43:21,493 INFO L138 BoogieDeclarations]: Found implementation of procedure free_all_mem [2022-11-03 01:43:21,493 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-03 01:43:21,493 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-03 01:43:21,493 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_len [2022-11-03 01:43:21,493 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_len [2022-11-03 01:43:21,494 INFO L130 BoogieDeclarations]: Found specification of procedure ocp_read_byte [2022-11-03 01:43:21,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ocp_read_byte [2022-11-03 01:43:21,494 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8152_set_mac_address [2022-11-03 01:43:21,494 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8152_set_mac_address [2022-11-03 01:43:21,494 INFO L130 BoogieDeclarations]: Found specification of procedure sram_write [2022-11-03 01:43:21,495 INFO L138 BoogieDeclarations]: Found implementation of procedure sram_write [2022-11-03 01:43:21,499 INFO L130 BoogieDeclarations]: Found specification of procedure ocp_read_word [2022-11-03 01:43:21,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ocp_read_word [2022-11-03 01:43:21,499 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 01:43:21,499 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 01:43:21,500 INFO L130 BoogieDeclarations]: Found specification of procedure set_tx_qlen [2022-11-03 01:43:21,500 INFO L138 BoogieDeclarations]: Found implementation of procedure set_tx_qlen [2022-11-03 01:43:21,500 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-03 01:43:21,500 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-03 01:43:21,500 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8152_set_rx_mode [2022-11-03 01:43:21,502 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8152_set_rx_mode [2022-11-03 01:43:21,502 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8152_ioctl [2022-11-03 01:43:21,502 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8152_ioctl [2022-11-03 01:43:21,502 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2022-11-03 01:43:21,502 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2022-11-03 01:43:21,502 INFO L130 BoogieDeclarations]: Found specification of procedure get_registers [2022-11-03 01:43:21,502 INFO L138 BoogieDeclarations]: Found implementation of procedure get_registers [2022-11-03 01:43:21,503 INFO L130 BoogieDeclarations]: Found specification of procedure r8152b_disable_aldps [2022-11-03 01:43:21,503 INFO L138 BoogieDeclarations]: Found implementation of procedure r8152b_disable_aldps [2022-11-03 01:43:21,503 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-03 01:43:21,503 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-03 01:43:21,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:43:21,503 INFO L130 BoogieDeclarations]: Found specification of procedure set_registers [2022-11-03 01:43:21,503 INFO L138 BoogieDeclarations]: Found implementation of procedure set_registers [2022-11-03 01:43:21,503 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-11-03 01:43:21,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:43:21,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:43:21,504 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_enable [2022-11-03 01:43:21,504 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_enable [2022-11-03 01:43:21,504 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 01:43:21,504 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 01:43:22,289 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:43:22,298 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:43:22,476 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 01:44:03,645 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:44:05,389 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:44:05,389 INFO L300 CfgBuilder]: Removed 15 assume(true) statements. [2022-11-03 01:44:05,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:44:05 BoogieIcfgContainer [2022-11-03 01:44:05,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:44:05,398 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:44:05,398 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:44:05,402 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:44:05,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:43:16" (1/3) ... [2022-11-03 01:44:05,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22f87a5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:44:05, skipping insertion in model container [2022-11-03 01:44:05,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:20" (2/3) ... [2022-11-03 01:44:05,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22f87a5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:44:05, skipping insertion in model container [2022-11-03 01:44:05,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:44:05" (3/3) ... [2022-11-03 01:44:05,405 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--r8152.ko-entry_point.cil.out.i [2022-11-03 01:44:05,424 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:44:05,424 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:44:05,516 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:44:05,524 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@26b6e83a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:44:05,525 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:44:05,534 INFO L276 IsEmpty]: Start isEmpty. Operand has 1831 states, 1027 states have (on average 1.3174294060370009) internal successors, (1353), 1091 states have internal predecessors, (1353), 689 states have call successors, (689), 125 states have call predecessors, (689), 124 states have return successors, (684), 669 states have call predecessors, (684), 684 states have call successors, (684) [2022-11-03 01:44:05,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-03 01:44:05,549 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:44:05,549 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:44:05,550 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:44:05,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:44:05,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1202768330, now seen corresponding path program 1 times [2022-11-03 01:44:05,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:44:05,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072890381] [2022-11-03 01:44:05,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:44:05,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:44:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:44:06,938 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-03 01:44:06,939 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:44:06,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072890381] [2022-11-03 01:44:06,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072890381] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:44:06,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:44:06,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:44:06,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212578354] [2022-11-03 01:44:06,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:44:06,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:44:06,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:44:06,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:44:06,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:44:06,999 INFO L87 Difference]: Start difference. First operand has 1831 states, 1027 states have (on average 1.3174294060370009) internal successors, (1353), 1091 states have internal predecessors, (1353), 689 states have call successors, (689), 125 states have call predecessors, (689), 124 states have return successors, (684), 669 states have call predecessors, (684), 684 states have call successors, (684) Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-03 01:44:09,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:44:11,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:44:13,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:44:16,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:44:19,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:44:19,187 INFO L93 Difference]: Finished difference Result 5323 states and 7990 transitions. [2022-11-03 01:44:19,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:44:19,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 64 [2022-11-03 01:44:19,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:44:19,269 INFO L225 Difference]: With dead ends: 5323 [2022-11-03 01:44:19,269 INFO L226 Difference]: Without dead ends: 3497 [2022-11-03 01:44:19,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:44:19,303 INFO L413 NwaCegarLoop]: 3751 mSDtfsCounter, 2527 mSDsluCounter, 2637 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 7 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2527 SdHoareTripleChecker+Valid, 6195 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:44:19,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2527 Valid, 6195 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 475 Invalid, 4 Unknown, 0 Unchecked, 11.8s Time] [2022-11-03 01:44:19,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3497 states. [2022-11-03 01:44:19,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3497 to 3495. [2022-11-03 01:44:19,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3495 states, 1935 states have (on average 1.3085271317829457) internal successors, (2532), 2027 states have internal predecessors, (2532), 1314 states have call successors, (1314), 246 states have call predecessors, (1314), 245 states have return successors, (1313), 1281 states have call predecessors, (1313), 1313 states have call successors, (1313) [2022-11-03 01:44:19,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3495 states to 3495 states and 5159 transitions. [2022-11-03 01:44:19,675 INFO L78 Accepts]: Start accepts. Automaton has 3495 states and 5159 transitions. Word has length 64 [2022-11-03 01:44:19,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:44:19,676 INFO L495 AbstractCegarLoop]: Abstraction has 3495 states and 5159 transitions. [2022-11-03 01:44:19,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-03 01:44:19,677 INFO L276 IsEmpty]: Start isEmpty. Operand 3495 states and 5159 transitions. [2022-11-03 01:44:19,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-03 01:44:19,690 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:44:19,690 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:44:19,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:44:19,691 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:44:19,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:44:19,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1556613919, now seen corresponding path program 1 times [2022-11-03 01:44:19,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:44:19,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139047534] [2022-11-03 01:44:19,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:44:19,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:44:20,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:44:21,089 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-03 01:44:21,089 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:44:21,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139047534] [2022-11-03 01:44:21,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139047534] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:44:21,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:44:21,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:44:21,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46643094] [2022-11-03 01:44:21,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:44:21,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:44:21,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:44:21,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:44:21,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:44:21,092 INFO L87 Difference]: Start difference. First operand 3495 states and 5159 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-03 01:44:23,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:44:25,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:44:28,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:44:30,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:44:36,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:44:36,246 INFO L93 Difference]: Finished difference Result 6923 states and 10286 transitions. [2022-11-03 01:44:36,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:44:36,247 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 73 [2022-11-03 01:44:36,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:44:36,338 INFO L225 Difference]: With dead ends: 6923 [2022-11-03 01:44:36,339 INFO L226 Difference]: Without dead ends: 6918 [2022-11-03 01:44:36,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:44:36,349 INFO L413 NwaCegarLoop]: 3832 mSDtfsCounter, 2525 mSDsluCounter, 6760 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2525 SdHoareTripleChecker+Valid, 10132 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:44:36,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2525 Valid, 10132 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 760 Invalid, 3 Unknown, 0 Unchecked, 14.8s Time] [2022-11-03 01:44:36,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6918 states. [2022-11-03 01:44:36,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6918 to 6909. [2022-11-03 01:44:36,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6909 states, 3819 states have (on average 1.309505106048704) internal successors, (5001), 4002 states have internal predecessors, (5001), 2600 states have call successors, (2600), 490 states have call predecessors, (2600), 489 states have return successors, (2667), 2534 states have call predecessors, (2667), 2599 states have call successors, (2667) [2022-11-03 01:44:36,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6909 states to 6909 states and 10268 transitions. [2022-11-03 01:44:36,775 INFO L78 Accepts]: Start accepts. Automaton has 6909 states and 10268 transitions. Word has length 73 [2022-11-03 01:44:36,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:44:36,778 INFO L495 AbstractCegarLoop]: Abstraction has 6909 states and 10268 transitions. [2022-11-03 01:44:36,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-03 01:44:36,779 INFO L276 IsEmpty]: Start isEmpty. Operand 6909 states and 10268 transitions. [2022-11-03 01:44:36,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-03 01:44:36,784 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:44:36,785 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 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] [2022-11-03 01:44:36,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:44:36,787 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:44:36,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:44:36,796 INFO L85 PathProgramCache]: Analyzing trace with hash 164915593, now seen corresponding path program 1 times [2022-11-03 01:44:36,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:44:36,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244309175] [2022-11-03 01:44:36,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:44:36,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:44:37,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:44:37,542 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-03 01:44:37,542 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:44:37,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244309175] [2022-11-03 01:44:37,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244309175] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:44:37,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:44:37,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:44:37,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139542454] [2022-11-03 01:44:37,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:44:37,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:44:37,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:44:37,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:44:37,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:44:37,545 INFO L87 Difference]: Start difference. First operand 6909 states and 10268 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 01:44:39,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:44:42,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:44:44,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:44:49,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:44:49,110 INFO L93 Difference]: Finished difference Result 20406 states and 30283 transitions. [2022-11-03 01:44:49,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:44:49,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 88 [2022-11-03 01:44:49,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:44:49,296 INFO L225 Difference]: With dead ends: 20406 [2022-11-03 01:44:49,297 INFO L226 Difference]: Without dead ends: 13516 [2022-11-03 01:44:49,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:44:49,369 INFO L413 NwaCegarLoop]: 4054 mSDtfsCounter, 2432 mSDsluCounter, 2615 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2432 SdHoareTripleChecker+Valid, 6480 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:44:49,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2432 Valid, 6480 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 487 Invalid, 3 Unknown, 0 Unchecked, 11.0s Time] [2022-11-03 01:44:49,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13516 states. [2022-11-03 01:44:50,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13516 to 13509. [2022-11-03 01:44:50,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13509 states, 7439 states have (on average 1.3071649415243984) internal successors, (9724), 7788 states have internal predecessors, (9724), 5092 states have call successors, (5092), 978 states have call predecessors, (5092), 977 states have return successors, (5217), 4968 states have call predecessors, (5217), 5091 states have call successors, (5217) [2022-11-03 01:44:50,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13509 states to 13509 states and 20033 transitions. [2022-11-03 01:44:50,279 INFO L78 Accepts]: Start accepts. Automaton has 13509 states and 20033 transitions. Word has length 88 [2022-11-03 01:44:50,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:44:50,279 INFO L495 AbstractCegarLoop]: Abstraction has 13509 states and 20033 transitions. [2022-11-03 01:44:50,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 01:44:50,281 INFO L276 IsEmpty]: Start isEmpty. Operand 13509 states and 20033 transitions. [2022-11-03 01:44:50,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-03 01:44:50,288 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:44:50,289 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 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] [2022-11-03 01:44:50,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 01:44:50,289 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:44:50,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:44:50,291 INFO L85 PathProgramCache]: Analyzing trace with hash -988066023, now seen corresponding path program 1 times [2022-11-03 01:44:50,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:44:50,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814203270] [2022-11-03 01:44:50,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:44:50,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:44:50,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:44:50,994 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-11-03 01:44:50,995 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:44:50,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814203270] [2022-11-03 01:44:50,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814203270] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:44:50,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:44:50,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:44:50,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069145223] [2022-11-03 01:44:50,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:44:50,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:44:50,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:44:50,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:44:50,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:44:50,997 INFO L87 Difference]: Start difference. First operand 13509 states and 20033 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 01:44:53,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:44:55,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:44:58,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:45:00,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:45:03,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:03,145 INFO L93 Difference]: Finished difference Result 23632 states and 35017 transitions. [2022-11-03 01:45:03,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:45:03,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 103 [2022-11-03 01:45:03,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:03,257 INFO L225 Difference]: With dead ends: 23632 [2022-11-03 01:45:03,258 INFO L226 Difference]: Without dead ends: 10141 [2022-11-03 01:45:03,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:03,340 INFO L413 NwaCegarLoop]: 2444 mSDtfsCounter, 5 mSDsluCounter, 2633 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 4882 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:03,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 4882 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 396 Invalid, 3 Unknown, 0 Unchecked, 11.6s Time] [2022-11-03 01:45:03,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10141 states. [2022-11-03 01:45:03,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10141 to 10136. [2022-11-03 01:45:03,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10136 states, 5576 states have (on average 1.3052367288378766) internal successors, (7278), 5833 states have internal predecessors, (7278), 3818 states have call successors, (3818), 742 states have call predecessors, (3818), 741 states have return successors, (3909), 3728 states have call predecessors, (3909), 3817 states have call successors, (3909) [2022-11-03 01:45:03,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10136 states to 10136 states and 15005 transitions. [2022-11-03 01:45:03,930 INFO L78 Accepts]: Start accepts. Automaton has 10136 states and 15005 transitions. Word has length 103 [2022-11-03 01:45:03,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:03,931 INFO L495 AbstractCegarLoop]: Abstraction has 10136 states and 15005 transitions. [2022-11-03 01:45:03,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 01:45:03,931 INFO L276 IsEmpty]: Start isEmpty. Operand 10136 states and 15005 transitions. [2022-11-03 01:45:03,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-03 01:45:03,942 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:03,943 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:03,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 01:45:03,943 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:45:03,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:03,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1873125575, now seen corresponding path program 1 times [2022-11-03 01:45:03,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:03,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676330664] [2022-11-03 01:45:03,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:03,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:04,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:05,239 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2022-11-03 01:45:05,239 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:05,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676330664] [2022-11-03 01:45:05,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676330664] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:05,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:05,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:45:05,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298456806] [2022-11-03 01:45:05,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:05,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:45:05,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:05,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:45:05,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:45:05,241 INFO L87 Difference]: Start difference. First operand 10136 states and 15005 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 01:45:07,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:45:10,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:45:12,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:45:14,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:45:16,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:45:21,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:45:23,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:45:24,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:24,641 INFO L93 Difference]: Finished difference Result 13538 states and 20073 transitions. [2022-11-03 01:45:24,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:45:24,642 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 121 [2022-11-03 01:45:24,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:24,747 INFO L225 Difference]: With dead ends: 13538 [2022-11-03 01:45:24,747 INFO L226 Difference]: Without dead ends: 13532 [2022-11-03 01:45:24,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:45:24,755 INFO L413 NwaCegarLoop]: 3752 mSDtfsCounter, 2511 mSDsluCounter, 6667 mSDsCounter, 0 mSdLazyCounter, 730 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2511 SdHoareTripleChecker+Valid, 9972 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 730 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:24,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2511 Valid, 9972 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 730 Invalid, 5 Unknown, 0 Unchecked, 18.8s Time] [2022-11-03 01:45:24,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13532 states. [2022-11-03 01:45:25,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13532 to 13519. [2022-11-03 01:45:25,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13519 states, 7437 states have (on average 1.3056339922011564) internal successors, (9710), 7780 states have internal predecessors, (9710), 5092 states have call successors, (5092), 990 states have call predecessors, (5092), 989 states have return successors, (5246), 4972 states have call predecessors, (5246), 5091 states have call successors, (5246) [2022-11-03 01:45:25,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13519 states to 13519 states and 20048 transitions. [2022-11-03 01:45:25,544 INFO L78 Accepts]: Start accepts. Automaton has 13519 states and 20048 transitions. Word has length 121 [2022-11-03 01:45:25,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:25,545 INFO L495 AbstractCegarLoop]: Abstraction has 13519 states and 20048 transitions. [2022-11-03 01:45:25,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 01:45:25,546 INFO L276 IsEmpty]: Start isEmpty. Operand 13519 states and 20048 transitions. [2022-11-03 01:45:25,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-03 01:45:25,588 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:25,588 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 4, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:25,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 01:45:25,588 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:45:25,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:25,589 INFO L85 PathProgramCache]: Analyzing trace with hash -2044720632, now seen corresponding path program 1 times [2022-11-03 01:45:25,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:25,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035462411] [2022-11-03 01:45:25,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:25,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:25,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:26,432 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2022-11-03 01:45:26,433 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:26,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035462411] [2022-11-03 01:45:26,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035462411] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:26,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:26,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:45:26,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954396978] [2022-11-03 01:45:26,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:26,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:45:26,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:26,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:45:26,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:26,435 INFO L87 Difference]: Start difference. First operand 13519 states and 20048 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-03 01:45:28,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:45:31,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:45:34,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:45:38,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:38,610 INFO L93 Difference]: Finished difference Result 28718 states and 42614 transitions. [2022-11-03 01:45:38,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:45:38,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 210 [2022-11-03 01:45:38,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:38,766 INFO L225 Difference]: With dead ends: 28718 [2022-11-03 01:45:38,766 INFO L226 Difference]: Without dead ends: 18518 [2022-11-03 01:45:38,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:38,822 INFO L413 NwaCegarLoop]: 4694 mSDtfsCounter, 2470 mSDsluCounter, 2585 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 9 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2470 SdHoareTripleChecker+Valid, 7097 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:38,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2470 Valid, 7097 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 576 Invalid, 3 Unknown, 0 Unchecked, 11.5s Time] [2022-11-03 01:45:38,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18518 states. [2022-11-03 01:45:39,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18518 to 18508. [2022-11-03 01:45:39,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18508 states, 10190 states have (on average 1.3059862610402355) internal successors, (13308), 10659 states have internal predecessors, (13308), 6962 states have call successors, (6962), 1356 states have call predecessors, (6962), 1355 states have return successors, (7174), 6796 states have call predecessors, (7174), 6961 states have call successors, (7174) [2022-11-03 01:45:39,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18508 states to 18508 states and 27444 transitions. [2022-11-03 01:45:39,873 INFO L78 Accepts]: Start accepts. Automaton has 18508 states and 27444 transitions. Word has length 210 [2022-11-03 01:45:39,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:39,874 INFO L495 AbstractCegarLoop]: Abstraction has 18508 states and 27444 transitions. [2022-11-03 01:45:39,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-03 01:45:39,875 INFO L276 IsEmpty]: Start isEmpty. Operand 18508 states and 27444 transitions. [2022-11-03 01:45:39,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-11-03 01:45:39,925 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:39,925 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:39,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 01:45:39,926 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:45:39,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:39,926 INFO L85 PathProgramCache]: Analyzing trace with hash 601102619, now seen corresponding path program 1 times [2022-11-03 01:45:39,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:39,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963804234] [2022-11-03 01:45:39,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:39,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:40,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:40,674 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-03 01:45:40,674 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:40,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963804234] [2022-11-03 01:45:40,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963804234] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:40,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:40,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:45:40,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002870688] [2022-11-03 01:45:40,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:40,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:45:40,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:40,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:45:40,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:40,677 INFO L87 Difference]: Start difference. First operand 18508 states and 27444 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-03 01:45:42,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:45:46,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:45:48,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:45:52,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:45:54,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:54,478 INFO L93 Difference]: Finished difference Result 33049 states and 48755 transitions. [2022-11-03 01:45:54,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:45:54,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 183 [2022-11-03 01:45:54,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:54,625 INFO L225 Difference]: With dead ends: 33049 [2022-11-03 01:45:54,625 INFO L226 Difference]: Without dead ends: 14560 [2022-11-03 01:45:54,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:54,734 INFO L413 NwaCegarLoop]: 3789 mSDtfsCounter, 2375 mSDsluCounter, 2564 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2375 SdHoareTripleChecker+Valid, 6165 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:54,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2375 Valid, 6165 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 540 Invalid, 3 Unknown, 0 Unchecked, 13.2s Time] [2022-11-03 01:45:54,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14560 states. [2022-11-03 01:45:55,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14560 to 12311. [2022-11-03 01:45:55,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12311 states, 6820 states have (on average 1.3030791788856304) internal successors, (8887), 7123 states have internal predecessors, (8887), 4548 states have call successors, (4548), 943 states have call predecessors, (4548), 942 states have return successors, (4633), 4441 states have call predecessors, (4633), 4547 states have call successors, (4633) [2022-11-03 01:45:55,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12311 states to 12311 states and 18068 transitions. [2022-11-03 01:45:55,457 INFO L78 Accepts]: Start accepts. Automaton has 12311 states and 18068 transitions. Word has length 183 [2022-11-03 01:45:55,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:55,458 INFO L495 AbstractCegarLoop]: Abstraction has 12311 states and 18068 transitions. [2022-11-03 01:45:55,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-03 01:45:55,458 INFO L276 IsEmpty]: Start isEmpty. Operand 12311 states and 18068 transitions. [2022-11-03 01:45:55,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-11-03 01:45:55,476 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:55,477 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:55,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 01:45:55,477 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:45:55,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:55,478 INFO L85 PathProgramCache]: Analyzing trace with hash 883005031, now seen corresponding path program 1 times [2022-11-03 01:45:55,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:55,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783872065] [2022-11-03 01:45:55,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:55,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:55,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:57,658 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2022-11-03 01:45:57,659 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:57,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783872065] [2022-11-03 01:45:57,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783872065] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:57,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:57,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:45:57,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344209804] [2022-11-03 01:45:57,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:57,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:45:57,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:57,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:45:57,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:45:57,661 INFO L87 Difference]: Start difference. First operand 12311 states and 18068 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 4 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-03 01:45:59,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:46:03,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:46:08,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:46:10,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:46:37,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:37,608 INFO L93 Difference]: Finished difference Result 25722 states and 38252 transitions. [2022-11-03 01:46:37,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:46:37,609 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 4 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 187 [2022-11-03 01:46:37,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:37,816 INFO L225 Difference]: With dead ends: 25722 [2022-11-03 01:46:37,816 INFO L226 Difference]: Without dead ends: 25716 [2022-11-03 01:46:37,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:46:37,836 INFO L413 NwaCegarLoop]: 2018 mSDtfsCounter, 3266 mSDsluCounter, 3073 mSDsCounter, 0 mSdLazyCounter, 5716 mSolverCounterSat, 3117 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3880 SdHoareTripleChecker+Valid, 4880 SdHoareTripleChecker+Invalid, 8837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3117 IncrementalHoareTripleChecker+Valid, 5716 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:37,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3880 Valid, 4880 Invalid, 8837 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3117 Valid, 5716 Invalid, 4 Unknown, 0 Unchecked, 38.6s Time] [2022-11-03 01:46:37,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25716 states. [2022-11-03 01:46:39,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25716 to 25686. [2022-11-03 01:46:39,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25686 states, 14197 states have (on average 1.297457209269564) internal successors, (18420), 14819 states have internal predecessors, (18420), 9556 states have call successors, (9556), 1852 states have call predecessors, (9556), 1932 states have return successors, (10225), 9437 states have call predecessors, (10225), 9555 states have call successors, (10225) [2022-11-03 01:46:39,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25686 states to 25686 states and 38201 transitions. [2022-11-03 01:46:39,533 INFO L78 Accepts]: Start accepts. Automaton has 25686 states and 38201 transitions. Word has length 187 [2022-11-03 01:46:39,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:39,534 INFO L495 AbstractCegarLoop]: Abstraction has 25686 states and 38201 transitions. [2022-11-03 01:46:39,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 4 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-03 01:46:39,535 INFO L276 IsEmpty]: Start isEmpty. Operand 25686 states and 38201 transitions. [2022-11-03 01:46:39,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-11-03 01:46:39,577 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:39,578 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 4, 4, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:39,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 01:46:39,578 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:46:39,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:39,579 INFO L85 PathProgramCache]: Analyzing trace with hash 684364846, now seen corresponding path program 1 times [2022-11-03 01:46:39,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:46:39,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485213248] [2022-11-03 01:46:39,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:39,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:46:39,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:41,522 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2022-11-03 01:46:41,522 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:46:41,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485213248] [2022-11-03 01:46:41,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485213248] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:41,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:41,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:46:41,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128242277] [2022-11-03 01:46:41,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:41,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:46:41,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:46:41,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:46:41,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:46:41,525 INFO L87 Difference]: Start difference. First operand 25686 states and 38201 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (34), 3 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-03 01:46:43,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:46:48,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:46:50,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:46:52,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:46:54,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:46:56,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:47:02,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:02,138 INFO L93 Difference]: Finished difference Result 51141 states and 77125 transitions. [2022-11-03 01:47:02,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:47:02,138 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (34), 3 states have call predecessors, (34), 2 states have call successors, (34) Word has length 221 [2022-11-03 01:47:02,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:02,500 INFO L225 Difference]: With dead ends: 51141 [2022-11-03 01:47:02,500 INFO L226 Difference]: Without dead ends: 25786 [2022-11-03 01:47:02,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:47:02,655 INFO L413 NwaCegarLoop]: 2440 mSDtfsCounter, 2 mSDsluCounter, 7892 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 9741 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:47:02,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 9741 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 810 Invalid, 5 Unknown, 0 Unchecked, 19.5s Time] [2022-11-03 01:47:02,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25786 states. [2022-11-03 01:47:04,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25786 to 25742. [2022-11-03 01:47:04,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25742 states, 14239 states have (on average 1.2965798159983144) internal successors, (18462), 14861 states have internal predecessors, (18462), 9556 states have call successors, (9556), 1852 states have call predecessors, (9556), 1946 states have return successors, (10261), 9451 states have call predecessors, (10261), 9555 states have call successors, (10261) [2022-11-03 01:47:04,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25742 states to 25742 states and 38279 transitions. [2022-11-03 01:47:04,656 INFO L78 Accepts]: Start accepts. Automaton has 25742 states and 38279 transitions. Word has length 221 [2022-11-03 01:47:04,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:04,657 INFO L495 AbstractCegarLoop]: Abstraction has 25742 states and 38279 transitions. [2022-11-03 01:47:04,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (34), 3 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-03 01:47:04,658 INFO L276 IsEmpty]: Start isEmpty. Operand 25742 states and 38279 transitions. [2022-11-03 01:47:04,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-03 01:47:04,701 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:04,701 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 4, 4, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:47:04,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 01:47:04,702 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:47:04,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:04,702 INFO L85 PathProgramCache]: Analyzing trace with hash 955414457, now seen corresponding path program 1 times [2022-11-03 01:47:04,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:47:04,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636103696] [2022-11-03 01:47:04,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:04,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:47:05,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:06,595 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2022-11-03 01:47:06,596 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:47:06,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636103696] [2022-11-03 01:47:06,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636103696] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:47:06,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357130925] [2022-11-03 01:47:06,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:06,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:47:06,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74fece-3af4-4a9c-87e7-127635dbf8e7/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:47:06,602 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74fece-3af4-4a9c-87e7-127635dbf8e7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:47:06,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74fece-3af4-4a9c-87e7-127635dbf8e7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 01:47:08,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:08,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 4214 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 01:47:08,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:47:09,382 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-11-03 01:47:09,388 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:47:09,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357130925] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:47:09,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:47:09,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-11-03 01:47:09,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492696511] [2022-11-03 01:47:09,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:09,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:47:09,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:47:09,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:47:09,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:47:09,392 INFO L87 Difference]: Start difference. First operand 25742 states and 38279 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2022-11-03 01:47:11,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:47:14,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:47:17,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:47:19,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:47:34,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:34,042 INFO L93 Difference]: Finished difference Result 59531 states and 88672 transitions. [2022-11-03 01:47:34,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:47:34,043 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) Word has length 235 [2022-11-03 01:47:34,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:34,331 INFO L225 Difference]: With dead ends: 59531 [2022-11-03 01:47:34,332 INFO L226 Difference]: Without dead ends: 34120 [2022-11-03 01:47:34,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:47:34,567 INFO L413 NwaCegarLoop]: 4829 mSDtfsCounter, 2681 mSDsluCounter, 6372 mSDsCounter, 0 mSdLazyCounter, 2322 mSolverCounterSat, 41 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2735 SdHoareTripleChecker+Valid, 10661 SdHoareTripleChecker+Invalid, 2367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 2322 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:47:34,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2735 Valid, 10661 Invalid, 2367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 2322 Invalid, 4 Unknown, 0 Unchecked, 22.9s Time] [2022-11-03 01:47:34,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34120 states. [2022-11-03 01:47:36,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34120 to 33235. [2022-11-03 01:47:36,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33235 states, 18418 states have (on average 1.2971549571071777) internal successors, (23891), 19212 states have internal predecessors, (23891), 12301 states have call successors, (12301), 2390 states have call predecessors, (12301), 2515 states have return successors, (13198), 12173 states have call predecessors, (13198), 12300 states have call successors, (13198) [2022-11-03 01:47:36,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33235 states to 33235 states and 49390 transitions. [2022-11-03 01:47:36,564 INFO L78 Accepts]: Start accepts. Automaton has 33235 states and 49390 transitions. Word has length 235 [2022-11-03 01:47:36,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:36,567 INFO L495 AbstractCegarLoop]: Abstraction has 33235 states and 49390 transitions. [2022-11-03 01:47:36,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2022-11-03 01:47:36,567 INFO L276 IsEmpty]: Start isEmpty. Operand 33235 states and 49390 transitions. [2022-11-03 01:47:36,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-11-03 01:47:36,613 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:36,614 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 4, 4, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:47:36,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74fece-3af4-4a9c-87e7-127635dbf8e7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 01:47:36,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74fece-3af4-4a9c-87e7-127635dbf8e7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:47:36,830 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:47:36,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:36,830 INFO L85 PathProgramCache]: Analyzing trace with hash 31383224, now seen corresponding path program 1 times [2022-11-03 01:47:36,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:47:36,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77427827] [2022-11-03 01:47:36,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:36,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:47:37,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:39,132 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2022-11-03 01:47:39,133 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:47:39,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77427827] [2022-11-03 01:47:39,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77427827] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:47:39,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051087911] [2022-11-03 01:47:39,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:39,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:47:39,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74fece-3af4-4a9c-87e7-127635dbf8e7/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:47:39,138 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74fece-3af4-4a9c-87e7-127635dbf8e7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:47:39,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74fece-3af4-4a9c-87e7-127635dbf8e7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 01:47:41,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:41,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 4251 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 01:47:41,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:47:41,936 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-11-03 01:47:41,936 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:47:41,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051087911] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:47:41,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:47:41,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-11-03 01:47:41,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856097066] [2022-11-03 01:47:41,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:41,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:47:41,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:47:41,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:47:41,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:47:41,939 INFO L87 Difference]: Start difference. First operand 33235 states and 49390 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2022-11-03 01:47:43,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:47:48,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:47:50,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:47:55,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:48:08,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:48:08,220 INFO L93 Difference]: Finished difference Result 74903 states and 111554 transitions. [2022-11-03 01:48:08,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:48:08,221 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 238 [2022-11-03 01:48:08,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:48:08,505 INFO L225 Difference]: With dead ends: 74903 [2022-11-03 01:48:08,505 INFO L226 Difference]: Without dead ends: 41999 [2022-11-03 01:48:08,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:48:08,729 INFO L413 NwaCegarLoop]: 4807 mSDtfsCounter, 2829 mSDsluCounter, 3799 mSDsCounter, 0 mSdLazyCounter, 2124 mSolverCounterSat, 49 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2883 SdHoareTripleChecker+Valid, 8245 SdHoareTripleChecker+Invalid, 2176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 2124 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:48:08,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2883 Valid, 8245 Invalid, 2176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 2124 Invalid, 3 Unknown, 0 Unchecked, 24.2s Time] [2022-11-03 01:48:08,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41999 states. [2022-11-03 01:48:10,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41999 to 33238. [2022-11-03 01:48:10,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33238 states, 18421 states have (on average 1.297106563161609) internal successors, (23894), 19212 states have internal predecessors, (23894), 12301 states have call successors, (12301), 2390 states have call predecessors, (12301), 2515 states have return successors, (13198), 12176 states have call predecessors, (13198), 12300 states have call successors, (13198) [2022-11-03 01:48:10,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33238 states to 33238 states and 49393 transitions. [2022-11-03 01:48:10,556 INFO L78 Accepts]: Start accepts. Automaton has 33238 states and 49393 transitions. Word has length 238 [2022-11-03 01:48:10,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:48:10,557 INFO L495 AbstractCegarLoop]: Abstraction has 33238 states and 49393 transitions. [2022-11-03 01:48:10,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2022-11-03 01:48:10,558 INFO L276 IsEmpty]: Start isEmpty. Operand 33238 states and 49393 transitions. [2022-11-03 01:48:10,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2022-11-03 01:48:10,592 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:48:10,592 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 4, 4, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:48:10,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74fece-3af4-4a9c-87e7-127635dbf8e7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 01:48:10,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74fece-3af4-4a9c-87e7-127635dbf8e7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-03 01:48:10,809 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:48:10,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:48:10,810 INFO L85 PathProgramCache]: Analyzing trace with hash -852648146, now seen corresponding path program 1 times [2022-11-03 01:48:10,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:48:10,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589776358] [2022-11-03 01:48:10,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:10,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:48:11,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:13,173 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2022-11-03 01:48:13,174 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:48:13,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589776358] [2022-11-03 01:48:13,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589776358] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:48:13,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533720063] [2022-11-03 01:48:13,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:13,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:48:13,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74fece-3af4-4a9c-87e7-127635dbf8e7/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:48:13,176 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74fece-3af4-4a9c-87e7-127635dbf8e7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:48:13,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74fece-3af4-4a9c-87e7-127635dbf8e7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 01:48:15,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:15,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 4541 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 01:48:15,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:48:18,311 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 169 proven. 24 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-11-03 01:48:18,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:48:19,900 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2022-11-03 01:48:19,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533720063] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:48:19,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [161665926] [2022-11-03 01:48:19,934 INFO L159 IcfgInterpreter]: Started Sifa with 184 locations of interest [2022-11-03 01:48:19,934 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:48:19,939 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:48:19,944 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:48:19,945 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:48:29,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:29,377 INFO L244 Elim1Store]: Index analysis took 330 ms [2022-11-03 01:48:33,465 INFO L356 Elim1Store]: treesize reduction 738, result has 33.4 percent of original size [2022-11-03 01:48:33,466 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 44 select indices, 44 select index equivalence classes, 905 disjoint index pairs (out of 946 index pairs), introduced 44 new quantified variables, introduced 82 case distinctions, treesize of input 227 treesize of output 517