./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--atm--he.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_07fae93d-1c78-4647-820c-810971c2f2c3/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fae93d-1c78-4647-820c-810971c2f2c3/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fae93d-1c78-4647-820c-810971c2f2c3/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fae93d-1c78-4647-820c-810971c2f2c3/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--atm--he.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fae93d-1c78-4647-820c-810971c2f2c3/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fae93d-1c78-4647-820c-810971c2f2c3/bin/utaipan-Q6hlc19bkW --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 7001fc39e766418166b5245dd523731096962c63b3f1d8b8399a7fc1e7a88c5f --- 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-4e7fbc6 [2022-11-23 14:11:56,404 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:11:56,407 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:11:56,433 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:11:56,434 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:11:56,435 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:11:56,436 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:11:56,438 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:11:56,440 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:11:56,441 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:11:56,443 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:11:56,444 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:11:56,445 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:11:56,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:11:56,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:11:56,449 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:11:56,450 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:11:56,451 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:11:56,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:11:56,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:11:56,458 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:11:56,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:11:56,462 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:11:56,463 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:11:56,468 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:11:56,468 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:11:56,469 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:11:56,470 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:11:56,470 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:11:56,472 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:11:56,472 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:11:56,473 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:11:56,474 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:11:56,476 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:11:56,477 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:11:56,478 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:11:56,479 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:11:56,479 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:11:56,480 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:11:56,481 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:11:56,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:11:56,483 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fae93d-1c78-4647-820c-810971c2f2c3/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 14:11:56,510 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:11:56,510 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:11:56,511 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:11:56,511 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:11:56,512 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:11:56,512 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:11:56,513 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:11:56,513 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:11:56,514 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:11:56,514 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:11:56,514 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:11:56,515 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:11:56,515 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:11:56,515 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:11:56,516 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:11:56,516 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:11:56,517 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:11:56,517 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:11:56,518 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:11:56,518 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:11:56,519 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:11:56,519 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:11:56,519 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:11:56,520 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:11:56,520 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:11:56,520 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:11:56,521 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:11:56,521 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:11:56,521 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:11:56,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:11:56,522 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:11:56,522 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:11:56,523 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:11:56,523 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:11:56,523 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:11:56,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:11:56,524 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:11:56,524 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:11:56,524 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_07fae93d-1c78-4647-820c-810971c2f2c3/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fae93d-1c78-4647-820c-810971c2f2c3/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7001fc39e766418166b5245dd523731096962c63b3f1d8b8399a7fc1e7a88c5f [2022-11-23 14:11:56,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:11:56,819 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:11:56,822 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:11:56,823 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:11:56,825 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:11:56,826 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fae93d-1c78-4647-820c-810971c2f2c3/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--atm--he.ko-entry_point.cil.out.i [2022-11-23 14:12:00,026 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:12:00,882 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:12:00,882 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fae93d-1c78-4647-820c-810971c2f2c3/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--atm--he.ko-entry_point.cil.out.i [2022-11-23 14:12:00,943 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fae93d-1c78-4647-820c-810971c2f2c3/bin/utaipan-Q6hlc19bkW/data/6970d411b/01fb7a953c1144cdac1e79ecdece9d46/FLAG8c4e19b63 [2022-11-23 14:12:00,973 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fae93d-1c78-4647-820c-810971c2f2c3/bin/utaipan-Q6hlc19bkW/data/6970d411b/01fb7a953c1144cdac1e79ecdece9d46 [2022-11-23 14:12:00,978 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:12:00,980 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:12:00,985 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:12:00,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:12:00,989 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:12:00,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:12:00" (1/1) ... [2022-11-23 14:12:00,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ee8117e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:12:00, skipping insertion in model container [2022-11-23 14:12:00,992 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:12:00" (1/1) ... [2022-11-23 14:12:01,000 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:12:01,156 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:12:01,709 WARN L1259 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6037] [2022-11-23 14:12:01,710 WARN L1259 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [6038-6039] [2022-11-23 14:12:02,199 WARN L237 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_07fae93d-1c78-4647-820c-810971c2f2c3/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--atm--he.ko-entry_point.cil.out.i[185861,185874] [2022-11-23 14:12:03,440 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-11-23 14:12:03,466 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:12:03,505 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:12:03,664 WARN L1259 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6037] [2022-11-23 14:12:03,664 WARN L1259 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [6038-6039] [2022-11-23 14:12:03,747 WARN L237 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_07fae93d-1c78-4647-820c-810971c2f2c3/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--atm--he.ko-entry_point.cil.out.i[185861,185874] [2022-11-23 14:12:04,093 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-11-23 14:12:04,099 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:12:04,219 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:12:04,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:12:04 WrapperNode [2022-11-23 14:12:04,219 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:12:04,221 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:12:04,221 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:12:04,222 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:12:04,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:12:04" (1/1) ... [2022-11-23 14:12:04,334 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:12:04" (1/1) ... [2022-11-23 14:12:04,562 INFO L138 Inliner]: procedures = 259, calls = 2016, calls flagged for inlining = 128, calls inlined = 102, statements flattened = 4818 [2022-11-23 14:12:04,563 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:12:04,564 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:12:04,564 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:12:04,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:12:04,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:12:04" (1/1) ... [2022-11-23 14:12:04,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:12:04" (1/1) ... [2022-11-23 14:12:04,631 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:12:04" (1/1) ... [2022-11-23 14:12:04,632 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:12:04" (1/1) ... [2022-11-23 14:12:04,805 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:12:04" (1/1) ... [2022-11-23 14:12:04,837 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:12:04" (1/1) ... [2022-11-23 14:12:04,863 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:12:04" (1/1) ... [2022-11-23 14:12:04,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:12:04" (1/1) ... [2022-11-23 14:12:05,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:12:05,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:12:05,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:12:05,035 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:12:05,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:12:04" (1/1) ... [2022-11-23 14:12:05,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:12:05,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fae93d-1c78-4647-820c-810971c2f2c3/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:12:05,105 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fae93d-1c78-4647-820c-810971c2f2c3/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:12:05,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fae93d-1c78-4647-820c-810971c2f2c3/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:12:05,165 INFO L130 BoogieDeclarations]: Found specification of procedure he_remove_one [2022-11-23 14:12:05,165 INFO L138 BoogieDeclarations]: Found implementation of procedure he_remove_one [2022-11-23 14:12:05,165 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-23 14:12:05,166 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-23 14:12:05,166 INFO L130 BoogieDeclarations]: Found specification of procedure remove_wait_queue [2022-11-23 14:12:05,166 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_wait_queue [2022-11-23 14:12:05,166 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-23 14:12:05,166 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 14:12:05,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 14:12:05,167 INFO L130 BoogieDeclarations]: Found specification of procedure he_close [2022-11-23 14:12:05,167 INFO L138 BoogieDeclarations]: Found implementation of procedure he_close [2022-11-23 14:12:05,167 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_alloc [2022-11-23 14:12:05,167 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_alloc [2022-11-23 14:12:05,168 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-23 14:12:05,168 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-23 14:12:05,168 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-23 14:12:05,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-23 14:12:05,168 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 14:12:05,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 14:12:05,169 INFO L130 BoogieDeclarations]: Found specification of procedure he_phy_get [2022-11-23 14:12:05,170 INFO L138 BoogieDeclarations]: Found implementation of procedure he_phy_get [2022-11-23 14:12:05,170 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_byte [2022-11-23 14:12:05,171 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_byte [2022-11-23 14:12:05,171 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_word [2022-11-23 14:12:05,172 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_word [2022-11-23 14:12:05,172 INFO L130 BoogieDeclarations]: Found specification of procedure __alloc_tpd [2022-11-23 14:12:05,172 INFO L138 BoogieDeclarations]: Found implementation of procedure __alloc_tpd [2022-11-23 14:12:05,172 INFO L130 BoogieDeclarations]: Found specification of procedure rate_to_atmf [2022-11-23 14:12:05,172 INFO L138 BoogieDeclarations]: Found implementation of procedure rate_to_atmf [2022-11-23 14:12:05,173 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-23 14:12:05,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-23 14:12:05,173 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-23 14:12:05,173 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-23 14:12:05,174 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-23 14:12:05,174 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-23 14:12:05,174 INFO L130 BoogieDeclarations]: Found specification of procedure he_phy_put [2022-11-23 14:12:05,174 INFO L138 BoogieDeclarations]: Found implementation of procedure he_phy_put [2022-11-23 14:12:05,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 14:12:05,175 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 14:12:05,175 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-23 14:12:05,175 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-23 14:12:05,175 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-23 14:12:05,175 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-23 14:12:05,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:12:05,176 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-23 14:12:05,177 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-23 14:12:05,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 14:12:05,177 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_create [2022-11-23 14:12:05,177 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_create [2022-11-23 14:12:05,177 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-23 14:12:05,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-23 14:12:05,178 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-23 14:12:05,178 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-23 14:12:05,178 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_destroy [2022-11-23 14:12:05,178 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_destroy [2022-11-23 14:12:05,178 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-23 14:12:05,179 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-23 14:12:05,179 INFO L130 BoogieDeclarations]: Found specification of procedure he_readl_internal [2022-11-23 14:12:05,179 INFO L138 BoogieDeclarations]: Found implementation of procedure he_readl_internal [2022-11-23 14:12:05,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:12:05,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 14:12:05,180 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-23 14:12:05,180 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-23 14:12:05,180 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_word [2022-11-23 14:12:05,181 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_word [2022-11-23 14:12:05,181 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2022-11-23 14:12:05,181 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2022-11-23 14:12:05,182 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-23 14:12:05,182 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-23 14:12:05,182 INFO L130 BoogieDeclarations]: Found specification of procedure he_send [2022-11-23 14:12:05,182 INFO L138 BoogieDeclarations]: Found implementation of procedure he_send [2022-11-23 14:12:05,183 INFO L130 BoogieDeclarations]: Found specification of procedure add_wait_queue [2022-11-23 14:12:05,183 INFO L138 BoogieDeclarations]: Found implementation of procedure add_wait_queue [2022-11-23 14:12:05,184 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-23 14:12:05,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-23 14:12:05,184 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-23 14:12:05,184 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-23 14:12:05,185 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2022-11-23 14:12:05,185 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2022-11-23 14:12:05,185 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-23 14:12:05,185 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-23 14:12:05,185 INFO L130 BoogieDeclarations]: Found specification of procedure he_writel_internal [2022-11-23 14:12:05,185 INFO L138 BoogieDeclarations]: Found implementation of procedure he_writel_internal [2022-11-23 14:12:05,186 INFO L130 BoogieDeclarations]: Found specification of procedure he_ioctl [2022-11-23 14:12:05,186 INFO L138 BoogieDeclarations]: Found implementation of procedure he_ioctl [2022-11-23 14:12:05,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:12:05,187 INFO L130 BoogieDeclarations]: Found specification of procedure he_open [2022-11-23 14:12:05,187 INFO L138 BoogieDeclarations]: Found implementation of procedure he_open [2022-11-23 14:12:05,188 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-23 14:12:05,188 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-23 14:12:05,188 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-23 14:12:05,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-23 14:12:05,188 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 14:12:05,189 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 14:12:05,189 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-23 14:12:05,189 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-23 14:12:05,189 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-23 14:12:05,190 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-23 14:12:05,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:12:05,190 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-23 14:12:05,190 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-23 14:12:05,190 INFO L130 BoogieDeclarations]: Found specification of procedure he_stop [2022-11-23 14:12:05,190 INFO L138 BoogieDeclarations]: Found implementation of procedure he_stop [2022-11-23 14:12:05,191 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 14:12:05,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 14:12:05,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 14:12:05,196 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-23 14:12:05,196 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-23 14:12:05,198 INFO L130 BoogieDeclarations]: Found specification of procedure __enqueue_tpd [2022-11-23 14:12:05,199 INFO L138 BoogieDeclarations]: Found implementation of procedure __enqueue_tpd [2022-11-23 14:12:05,199 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-11-23 14:12:05,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-11-23 14:12:05,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:12:05,201 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2022-11-23 14:12:05,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2022-11-23 14:12:05,207 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-11-23 14:12:05,207 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-11-23 14:12:05,208 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-23 14:12:05,208 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-23 14:12:05,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 14:12:05,208 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2022-11-23 14:12:05,209 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2022-11-23 14:12:05,210 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-23 14:12:05,210 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-23 14:12:05,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-23 14:12:05,210 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2022-11-23 14:12:05,210 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2022-11-23 14:12:05,210 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-23 14:12:05,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-23 14:12:05,211 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-11-23 14:12:05,211 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-11-23 14:12:05,211 INFO L130 BoogieDeclarations]: Found specification of procedure atm_dev_deregister [2022-11-23 14:12:05,211 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_dev_deregister [2022-11-23 14:12:05,212 INFO L130 BoogieDeclarations]: Found specification of procedure read_prom_byte [2022-11-23 14:12:05,212 INFO L138 BoogieDeclarations]: Found implementation of procedure read_prom_byte [2022-11-23 14:12:05,212 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-23 14:12:05,212 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-23 14:12:05,212 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-23 14:12:05,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-23 14:12:05,213 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-23 14:12:05,213 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-23 14:12:05,213 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-23 14:12:05,213 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-23 14:12:05,213 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2022-11-23 14:12:05,213 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2022-11-23 14:12:05,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:12:05,214 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-11-23 14:12:05,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-11-23 14:12:05,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:12:05,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:12:05,215 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_free [2022-11-23 14:12:05,216 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_free [2022-11-23 14:12:06,084 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:12:06,088 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:12:06,783 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 14:12:11,089 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:12:12,705 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:12:12,706 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 14:12:12,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:12:12 BoogieIcfgContainer [2022-11-23 14:12:12,711 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:12:12,716 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:12:12,716 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:12:12,720 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:12:12,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:12:00" (1/3) ... [2022-11-23 14:12:12,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2030d2ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:12:12, skipping insertion in model container [2022-11-23 14:12:12,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:12:04" (2/3) ... [2022-11-23 14:12:12,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2030d2ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:12:12, skipping insertion in model container [2022-11-23 14:12:12,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:12:12" (3/3) ... [2022-11-23 14:12:12,724 INFO L112 eAbstractionObserver]: Analyzing ICFG 43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--atm--he.ko-entry_point.cil.out.i [2022-11-23 14:12:12,748 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:12:12,748 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:12:12,857 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:12:12,871 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;@179ce0db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:12:12,871 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:12:12,882 INFO L276 IsEmpty]: Start isEmpty. Operand has 1352 states, 772 states have (on average 1.2953367875647668) internal successors, (1000), 795 states have internal predecessors, (1000), 510 states have call successors, (510), 69 states have call predecessors, (510), 68 states have return successors, (504), 499 states have call predecessors, (504), 504 states have call successors, (504) [2022-11-23 14:12:12,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-23 14:12:12,902 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:12:12,903 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:12:12,904 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:12:12,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:12:12,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1763365606, now seen corresponding path program 1 times [2022-11-23 14:12:12,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:12:12,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591647047] [2022-11-23 14:12:12,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:12:12,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:12:13,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:12:13,575 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-23 14:12:13,575 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:12:13,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591647047] [2022-11-23 14:12:13,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591647047] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:12:13,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:12:13,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:12:13,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262043572] [2022-11-23 14:12:13,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:12:13,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:12:13,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:12:13,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:12:13,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:12:13,647 INFO L87 Difference]: Start difference. First operand has 1352 states, 772 states have (on average 1.2953367875647668) internal successors, (1000), 795 states have internal predecessors, (1000), 510 states have call successors, (510), 69 states have call predecessors, (510), 68 states have return successors, (504), 499 states have call predecessors, (504), 504 states have call successors, (504) Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 14:12:16,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:12:17,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:12:17,137 INFO L93 Difference]: Finished difference Result 3222 states and 4796 transitions. [2022-11-23 14:12:17,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:12:17,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 57 [2022-11-23 14:12:17,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:12:17,166 INFO L225 Difference]: With dead ends: 3222 [2022-11-23 14:12:17,167 INFO L226 Difference]: Without dead ends: 1860 [2022-11-23 14:12:17,179 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 [2022-11-23 14:12:17,182 INFO L413 NwaCegarLoop]: 2181 mSDtfsCounter, 766 mSDsluCounter, 1795 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 3976 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:12:17,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [766 Valid, 3976 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 370 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2022-11-23 14:12:17,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1860 states. [2022-11-23 14:12:17,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1860 to 1850. [2022-11-23 14:12:17,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1850 states, 1075 states have (on average 1.2855813953488373) internal successors, (1382), 1095 states have internal predecessors, (1382), 668 states have call successors, (668), 108 states have call predecessors, (668), 106 states have return successors, (667), 658 states have call predecessors, (667), 667 states have call successors, (667) [2022-11-23 14:12:17,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1850 states to 1850 states and 2717 transitions. [2022-11-23 14:12:17,483 INFO L78 Accepts]: Start accepts. Automaton has 1850 states and 2717 transitions. Word has length 57 [2022-11-23 14:12:17,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:12:17,485 INFO L495 AbstractCegarLoop]: Abstraction has 1850 states and 2717 transitions. [2022-11-23 14:12:17,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 14:12:17,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1850 states and 2717 transitions. [2022-11-23 14:12:17,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-23 14:12:17,495 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:12:17,495 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:12:17,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:12:17,495 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:12:17,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:12:17,496 INFO L85 PathProgramCache]: Analyzing trace with hash -490881857, now seen corresponding path program 1 times [2022-11-23 14:12:17,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:12:17,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416410945] [2022-11-23 14:12:17,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:12:17,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:12:17,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:12:17,754 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-23 14:12:17,758 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:12:17,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416410945] [2022-11-23 14:12:17,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416410945] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:12:17,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:12:17,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:12:17,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809032253] [2022-11-23 14:12:17,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:12:17,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:12:17,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:12:17,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:12:17,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:12:17,765 INFO L87 Difference]: Start difference. First operand 1850 states and 2717 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 14:12:20,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:12:21,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:12:21,587 INFO L93 Difference]: Finished difference Result 4379 states and 6411 transitions. [2022-11-23 14:12:21,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:12:21,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 55 [2022-11-23 14:12:21,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:12:21,605 INFO L225 Difference]: With dead ends: 4379 [2022-11-23 14:12:21,606 INFO L226 Difference]: Without dead ends: 2540 [2022-11-23 14:12:21,614 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 [2022-11-23 14:12:21,616 INFO L413 NwaCegarLoop]: 2378 mSDtfsCounter, 901 mSDsluCounter, 1810 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 4188 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:12:21,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [901 Valid, 4188 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 369 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2022-11-23 14:12:21,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2540 states. [2022-11-23 14:12:21,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2540 to 2537. [2022-11-23 14:12:21,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2537 states, 1500 states have (on average 1.306) internal successors, (1959), 1533 states have internal predecessors, (1959), 874 states have call successors, (874), 164 states have call predecessors, (874), 162 states have return successors, (873), 860 states have call predecessors, (873), 873 states have call successors, (873) [2022-11-23 14:12:21,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2537 states to 2537 states and 3706 transitions. [2022-11-23 14:12:21,875 INFO L78 Accepts]: Start accepts. Automaton has 2537 states and 3706 transitions. Word has length 55 [2022-11-23 14:12:21,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:12:21,875 INFO L495 AbstractCegarLoop]: Abstraction has 2537 states and 3706 transitions. [2022-11-23 14:12:21,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 14:12:21,876 INFO L276 IsEmpty]: Start isEmpty. Operand 2537 states and 3706 transitions. [2022-11-23 14:12:21,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-23 14:12:21,878 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:12:21,878 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2022-11-23 14:12:21,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:12:21,879 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:12:21,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:12:21,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1172688263, now seen corresponding path program 1 times [2022-11-23 14:12:21,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:12:21,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111612589] [2022-11-23 14:12:21,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:12:21,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:12:21,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:12:22,111 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-23 14:12:22,112 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:12:22,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111612589] [2022-11-23 14:12:22,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111612589] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:12:22,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:12:22,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:12:22,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892857353] [2022-11-23 14:12:22,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:12:22,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:12:22,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:12:22,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:12:22,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:12:22,114 INFO L87 Difference]: Start difference. First operand 2537 states and 3706 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-23 14:12:24,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:12:25,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:12:25,237 INFO L93 Difference]: Finished difference Result 3828 states and 5563 transitions. [2022-11-23 14:12:25,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:12:25,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 70 [2022-11-23 14:12:25,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:12:25,274 INFO L225 Difference]: With dead ends: 3828 [2022-11-23 14:12:25,274 INFO L226 Difference]: Without dead ends: 3825 [2022-11-23 14:12:25,280 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 [2022-11-23 14:12:25,284 INFO L413 NwaCegarLoop]: 2026 mSDtfsCounter, 955 mSDsluCounter, 1688 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 955 SdHoareTripleChecker+Valid, 3714 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-23 14:12:25,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [955 Valid, 3714 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 306 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-11-23 14:12:25,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3825 states. [2022-11-23 14:12:25,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3825 to 3778. [2022-11-23 14:12:25,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3778 states, 2321 states have (on average 1.3162429987074538) internal successors, (3055), 2361 states have internal predecessors, (3055), 1190 states have call successors, (1190), 269 states have call predecessors, (1190), 266 states have return successors, (1232), 1172 states have call predecessors, (1232), 1189 states have call successors, (1232) [2022-11-23 14:12:25,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3778 states to 3778 states and 5477 transitions. [2022-11-23 14:12:25,562 INFO L78 Accepts]: Start accepts. Automaton has 3778 states and 5477 transitions. Word has length 70 [2022-11-23 14:12:25,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:12:25,565 INFO L495 AbstractCegarLoop]: Abstraction has 3778 states and 5477 transitions. [2022-11-23 14:12:25,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-23 14:12:25,566 INFO L276 IsEmpty]: Start isEmpty. Operand 3778 states and 5477 transitions. [2022-11-23 14:12:25,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-23 14:12:25,575 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:12:25,575 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 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] [2022-11-23 14:12:25,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 14:12:25,577 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:12:25,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:12:25,578 INFO L85 PathProgramCache]: Analyzing trace with hash -8784926, now seen corresponding path program 1 times [2022-11-23 14:12:25,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:12:25,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628628528] [2022-11-23 14:12:25,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:12:25,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:12:25,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:12:25,981 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-11-23 14:12:25,981 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:12:25,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628628528] [2022-11-23 14:12:25,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628628528] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:12:25,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:12:25,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:12:25,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231454263] [2022-11-23 14:12:25,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:12:25,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:12:25,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:12:25,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:12:25,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:12:25,985 INFO L87 Difference]: Start difference. First operand 3778 states and 5477 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-23 14:12:29,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:12:29,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:12:29,436 INFO L93 Difference]: Finished difference Result 9243 states and 13329 transitions. [2022-11-23 14:12:29,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:12:29,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 112 [2022-11-23 14:12:29,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:12:29,477 INFO L225 Difference]: With dead ends: 9243 [2022-11-23 14:12:29,477 INFO L226 Difference]: Without dead ends: 5484 [2022-11-23 14:12:29,497 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 [2022-11-23 14:12:29,498 INFO L413 NwaCegarLoop]: 2298 mSDtfsCounter, 1022 mSDsluCounter, 1782 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1022 SdHoareTripleChecker+Valid, 4080 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:12:29,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1022 Valid, 4080 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 405 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2022-11-23 14:12:29,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5484 states. [2022-11-23 14:12:29,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5484 to 5463. [2022-11-23 14:12:29,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5463 states, 3401 states have (on average 1.3099088503381358) internal successors, (4455), 3458 states have internal predecessors, (4455), 1648 states have call successors, (1648), 418 states have call predecessors, (1648), 413 states have return successors, (1707), 1623 states have call predecessors, (1707), 1647 states have call successors, (1707) [2022-11-23 14:12:29,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5463 states to 5463 states and 7810 transitions. [2022-11-23 14:12:29,970 INFO L78 Accepts]: Start accepts. Automaton has 5463 states and 7810 transitions. Word has length 112 [2022-11-23 14:12:29,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:12:29,972 INFO L495 AbstractCegarLoop]: Abstraction has 5463 states and 7810 transitions. [2022-11-23 14:12:29,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-23 14:12:29,973 INFO L276 IsEmpty]: Start isEmpty. Operand 5463 states and 7810 transitions. [2022-11-23 14:12:29,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-23 14:12:29,984 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:12:29,984 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 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] [2022-11-23 14:12:29,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 14:12:29,985 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:12:29,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:12:29,986 INFO L85 PathProgramCache]: Analyzing trace with hash -273998573, now seen corresponding path program 1 times [2022-11-23 14:12:29,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:12:29,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773774588] [2022-11-23 14:12:29,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:12:29,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:12:30,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:12:31,049 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-11-23 14:12:31,050 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:12:31,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773774588] [2022-11-23 14:12:31,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773774588] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:12:31,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:12:31,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:12:31,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399200490] [2022-11-23 14:12:31,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:12:31,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:12:31,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:12:31,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:12:31,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:12:31,055 INFO L87 Difference]: Start difference. First operand 5463 states and 7810 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 14:12:34,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:12:35,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:12:35,269 INFO L93 Difference]: Finished difference Result 12421 states and 18046 transitions. [2022-11-23 14:12:35,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:12:35,270 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 111 [2022-11-23 14:12:35,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:12:35,321 INFO L225 Difference]: With dead ends: 12421 [2022-11-23 14:12:35,321 INFO L226 Difference]: Without dead ends: 6977 [2022-11-23 14:12:35,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:12:35,347 INFO L413 NwaCegarLoop]: 2169 mSDtfsCounter, 232 mSDsluCounter, 6222 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 8391 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:12:35,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 8391 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 697 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2022-11-23 14:12:35,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6977 states. [2022-11-23 14:12:35,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6977 to 5487. [2022-11-23 14:12:35,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5487 states, 3419 states have (on average 1.3082772740567417) internal successors, (4473), 3476 states have internal predecessors, (4473), 1648 states have call successors, (1648), 418 states have call predecessors, (1648), 419 states have return successors, (1730), 1629 states have call predecessors, (1730), 1647 states have call successors, (1730) [2022-11-23 14:12:35,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5487 states to 5487 states and 7851 transitions. [2022-11-23 14:12:35,734 INFO L78 Accepts]: Start accepts. Automaton has 5487 states and 7851 transitions. Word has length 111 [2022-11-23 14:12:35,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:12:35,735 INFO L495 AbstractCegarLoop]: Abstraction has 5487 states and 7851 transitions. [2022-11-23 14:12:35,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 14:12:35,735 INFO L276 IsEmpty]: Start isEmpty. Operand 5487 states and 7851 transitions. [2022-11-23 14:12:35,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-23 14:12:35,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:12:35,740 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 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] [2022-11-23 14:12:35,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 14:12:35,740 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:12:35,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:12:35,741 INFO L85 PathProgramCache]: Analyzing trace with hash 2306079, now seen corresponding path program 1 times [2022-11-23 14:12:35,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:12:35,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370042816] [2022-11-23 14:12:35,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:12:35,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:12:35,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:12:37,458 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-11-23 14:12:37,458 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:12:37,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370042816] [2022-11-23 14:12:37,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370042816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:12:37,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:12:37,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 14:12:37,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097872295] [2022-11-23 14:12:37,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:12:37,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 14:12:37,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:12:37,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 14:12:37,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:12:37,461 INFO L87 Difference]: Start difference. First operand 5487 states and 7851 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 4 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-23 14:12:42,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:12:43,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:12:43,321 INFO L93 Difference]: Finished difference Result 13519 states and 19876 transitions. [2022-11-23 14:12:43,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:12:43,322 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 4 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 115 [2022-11-23 14:12:43,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:12:43,383 INFO L225 Difference]: With dead ends: 13519 [2022-11-23 14:12:43,383 INFO L226 Difference]: Without dead ends: 8051 [2022-11-23 14:12:43,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-23 14:12:43,414 INFO L413 NwaCegarLoop]: 2115 mSDtfsCounter, 1056 mSDsluCounter, 10284 mSDsCounter, 0 mSdLazyCounter, 1158 mSolverCounterSat, 245 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1153 SdHoareTripleChecker+Valid, 12399 SdHoareTripleChecker+Invalid, 1404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 1158 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:12:43,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1153 Valid, 12399 Invalid, 1404 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [245 Valid, 1158 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2022-11-23 14:12:43,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8051 states. [2022-11-23 14:12:43,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8051 to 5723. [2022-11-23 14:12:43,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5723 states, 3561 states have (on average 1.306093793878124) internal successors, (4651), 3618 states have internal predecessors, (4651), 1742 states have call successors, (1742), 418 states have call predecessors, (1742), 419 states have return successors, (1827), 1723 states have call predecessors, (1827), 1741 states have call successors, (1827) [2022-11-23 14:12:43,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5723 states to 5723 states and 8220 transitions. [2022-11-23 14:12:43,954 INFO L78 Accepts]: Start accepts. Automaton has 5723 states and 8220 transitions. Word has length 115 [2022-11-23 14:12:43,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:12:43,955 INFO L495 AbstractCegarLoop]: Abstraction has 5723 states and 8220 transitions. [2022-11-23 14:12:43,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 4 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-23 14:12:43,956 INFO L276 IsEmpty]: Start isEmpty. Operand 5723 states and 8220 transitions. [2022-11-23 14:12:43,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-23 14:12:43,960 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:12:43,960 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 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] [2022-11-23 14:12:43,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 14:12:43,961 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:12:43,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:12:43,962 INFO L85 PathProgramCache]: Analyzing trace with hash -573993485, now seen corresponding path program 1 times [2022-11-23 14:12:43,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:12:43,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743905002] [2022-11-23 14:12:43,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:12:43,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:12:44,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:12:44,294 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-11-23 14:12:44,295 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:12:44,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743905002] [2022-11-23 14:12:44,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743905002] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:12:44,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:12:44,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:12:44,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404868934] [2022-11-23 14:12:44,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:12:44,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:12:44,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:12:44,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:12:44,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:12:44,297 INFO L87 Difference]: Start difference. First operand 5723 states and 8220 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 14:12:47,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:12:48,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:12:48,689 INFO L93 Difference]: Finished difference Result 13093 states and 19144 transitions. [2022-11-23 14:12:48,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:12:48,690 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 121 [2022-11-23 14:12:48,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:12:48,755 INFO L225 Difference]: With dead ends: 13093 [2022-11-23 14:12:48,756 INFO L226 Difference]: Without dead ends: 7389 [2022-11-23 14:12:48,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:12:48,792 INFO L413 NwaCegarLoop]: 2073 mSDtfsCounter, 421 mSDsluCounter, 3879 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 59 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 5952 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:12:48,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 5952 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 518 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2022-11-23 14:12:48,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7389 states. [2022-11-23 14:12:49,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7389 to 5739. [2022-11-23 14:12:49,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5739 states, 3577 states have (on average 1.3047246295778585) internal successors, (4667), 3634 states have internal predecessors, (4667), 1742 states have call successors, (1742), 418 states have call predecessors, (1742), 419 states have return successors, (1827), 1723 states have call predecessors, (1827), 1741 states have call successors, (1827) [2022-11-23 14:12:49,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5739 states to 5739 states and 8236 transitions. [2022-11-23 14:12:49,343 INFO L78 Accepts]: Start accepts. Automaton has 5739 states and 8236 transitions. Word has length 121 [2022-11-23 14:12:49,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:12:49,344 INFO L495 AbstractCegarLoop]: Abstraction has 5739 states and 8236 transitions. [2022-11-23 14:12:49,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 14:12:49,344 INFO L276 IsEmpty]: Start isEmpty. Operand 5739 states and 8236 transitions. [2022-11-23 14:12:49,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-11-23 14:12:49,353 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:12:49,353 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 4, 3, 3, 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] [2022-11-23 14:12:49,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 14:12:49,354 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:12:49,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:12:49,355 INFO L85 PathProgramCache]: Analyzing trace with hash 805897120, now seen corresponding path program 1 times [2022-11-23 14:12:49,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:12:49,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249323411] [2022-11-23 14:12:49,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:12:49,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:12:49,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:12:49,811 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-11-23 14:12:49,811 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:12:49,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249323411] [2022-11-23 14:12:49,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249323411] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:12:49,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:12:49,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:12:49,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744143594] [2022-11-23 14:12:49,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:12:49,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:12:49,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:12:49,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:12:49,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:12:49,814 INFO L87 Difference]: Start difference. First operand 5739 states and 8236 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-23 14:12:52,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:12:53,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:12:53,574 INFO L93 Difference]: Finished difference Result 11515 states and 16542 transitions. [2022-11-23 14:12:53,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:12:53,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 241 [2022-11-23 14:12:53,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:12:53,606 INFO L225 Difference]: With dead ends: 11515 [2022-11-23 14:12:53,606 INFO L226 Difference]: Without dead ends: 5795 [2022-11-23 14:12:53,627 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 [2022-11-23 14:12:53,629 INFO L413 NwaCegarLoop]: 1827 mSDtfsCounter, 4 mSDsluCounter, 1810 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 3637 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:12:53,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 3637 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 340 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2022-11-23 14:12:53,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5795 states. [2022-11-23 14:12:54,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5795 to 5759. [2022-11-23 14:12:54,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5759 states, 3597 states have (on average 1.303030303030303) internal successors, (4687), 3654 states have internal predecessors, (4687), 1742 states have call successors, (1742), 418 states have call predecessors, (1742), 419 states have return successors, (1827), 1723 states have call predecessors, (1827), 1741 states have call successors, (1827) [2022-11-23 14:12:54,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5759 states to 5759 states and 8256 transitions. [2022-11-23 14:12:54,057 INFO L78 Accepts]: Start accepts. Automaton has 5759 states and 8256 transitions. Word has length 241 [2022-11-23 14:12:54,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:12:54,058 INFO L495 AbstractCegarLoop]: Abstraction has 5759 states and 8256 transitions. [2022-11-23 14:12:54,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-23 14:12:54,058 INFO L276 IsEmpty]: Start isEmpty. Operand 5759 states and 8256 transitions. [2022-11-23 14:12:54,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2022-11-23 14:12:54,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:12:54,070 INFO L195 NwaCegarLoop]: trace histogram [14, 8, 8, 8, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-23 14:12:54,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 14:12:54,070 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:12:54,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:12:54,071 INFO L85 PathProgramCache]: Analyzing trace with hash -362071708, now seen corresponding path program 1 times [2022-11-23 14:12:54,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:12:54,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474455926] [2022-11-23 14:12:54,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:12:54,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:12:54,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:12:54,583 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2022-11-23 14:12:54,584 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:12:54,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474455926] [2022-11-23 14:12:54,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474455926] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:12:54,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524811654] [2022-11-23 14:12:54,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:12:54,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:12:54,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fae93d-1c78-4647-820c-810971c2f2c3/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:12:54,589 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fae93d-1c78-4647-820c-810971c2f2c3/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:12:54,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fae93d-1c78-4647-820c-810971c2f2c3/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 14:12:56,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:12:56,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 3212 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 14:12:56,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:12:56,158 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2022-11-23 14:12:56,159 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:12:56,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524811654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:12:56,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:12:56,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-23 14:12:56,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802388239] [2022-11-23 14:12:56,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:12:56,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:12:56,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:12:56,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:12:56,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:12:56,161 INFO L87 Difference]: Start difference. First operand 5759 states and 8256 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2022-11-23 14:12:58,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:12:59,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:12:59,432 INFO L93 Difference]: Finished difference Result 11619 states and 16698 transitions. [2022-11-23 14:12:59,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:12:59,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 297 [2022-11-23 14:12:59,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:12:59,459 INFO L225 Difference]: With dead ends: 11619 [2022-11-23 14:12:59,460 INFO L226 Difference]: Without dead ends: 5879 [2022-11-23 14:12:59,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:12:59,479 INFO L413 NwaCegarLoop]: 1838 mSDtfsCounter, 9 mSDsluCounter, 1822 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 3660 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-23 14:12:59,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 3660 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 325 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-11-23 14:12:59,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5879 states. [2022-11-23 14:12:59,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5879 to 5771. [2022-11-23 14:12:59,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5771 states, 3609 states have (on average 1.3020227209753394) internal successors, (4699), 3666 states have internal predecessors, (4699), 1742 states have call successors, (1742), 418 states have call predecessors, (1742), 419 states have return successors, (1827), 1723 states have call predecessors, (1827), 1741 states have call successors, (1827) [2022-11-23 14:12:59,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5771 states to 5771 states and 8268 transitions. [2022-11-23 14:12:59,884 INFO L78 Accepts]: Start accepts. Automaton has 5771 states and 8268 transitions. Word has length 297 [2022-11-23 14:12:59,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:12:59,885 INFO L495 AbstractCegarLoop]: Abstraction has 5771 states and 8268 transitions. [2022-11-23 14:12:59,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2022-11-23 14:12:59,885 INFO L276 IsEmpty]: Start isEmpty. Operand 5771 states and 8268 transitions. [2022-11-23 14:12:59,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2022-11-23 14:12:59,898 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:12:59,898 INFO L195 NwaCegarLoop]: trace histogram [26, 15, 9, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-23 14:12:59,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fae93d-1c78-4647-820c-810971c2f2c3/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 14:13:00,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fae93d-1c78-4647-820c-810971c2f2c3/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-23 14:13:00,111 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:13:00,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:13:00,112 INFO L85 PathProgramCache]: Analyzing trace with hash -190012913, now seen corresponding path program 1 times [2022-11-23 14:13:00,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:13:00,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952319648] [2022-11-23 14:13:00,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:13:00,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:13:00,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:13:00,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1189 backedges. 10 proven. 67 refuted. 0 times theorem prover too weak. 1112 trivial. 0 not checked. [2022-11-23 14:13:00,881 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:13:00,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952319648] [2022-11-23 14:13:00,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952319648] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:13:00,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391815733] [2022-11-23 14:13:00,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:13:00,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:13:00,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fae93d-1c78-4647-820c-810971c2f2c3/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:13:00,883 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fae93d-1c78-4647-820c-810971c2f2c3/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:13:00,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fae93d-1c78-4647-820c-810971c2f2c3/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 14:13:02,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:13:02,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 3692 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:13:02,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:13:02,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1189 backedges. 344 proven. 1 refuted. 0 times theorem prover too weak. 844 trivial. 0 not checked. [2022-11-23 14:13:02,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:13:02,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1189 backedges. 10 proven. 67 refuted. 0 times theorem prover too weak. 1112 trivial. 0 not checked. [2022-11-23 14:13:02,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391815733] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:13:02,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [22585498] [2022-11-23 14:13:03,007 INFO L159 IcfgInterpreter]: Started Sifa with 199 locations of interest [2022-11-23 14:13:03,007 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:13:03,012 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:13:03,018 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:13:03,019 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs