./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--r8152.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_4db9b40f-24c0-4634-baa6-3169ebf86b32/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db9b40f-24c0-4634-baa6-3169ebf86b32/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db9b40f-24c0-4634-baa6-3169ebf86b32/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db9b40f-24c0-4634-baa6-3169ebf86b32/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--r8152.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db9b40f-24c0-4634-baa6-3169ebf86b32/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db9b40f-24c0-4634-baa6-3169ebf86b32/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 5b9b8810066c6b805a125dba67c1c1409161534a09c0fedd6964ff3375355a5b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:41:30,663 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:41:30,666 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:41:30,689 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:41:30,692 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:41:30,695 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:41:30,699 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:41:30,707 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:41:30,709 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:41:30,712 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:41:30,713 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:41:30,714 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:41:30,714 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:41:30,715 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:41:30,716 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:41:30,717 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:41:30,718 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:41:30,719 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:41:30,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:41:30,723 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:41:30,724 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:41:30,730 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:41:30,731 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:41:30,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:41:30,737 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:41:30,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:41:30,738 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:41:30,738 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:41:30,739 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:41:30,740 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:41:30,740 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:41:30,741 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:41:30,742 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:41:30,743 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:41:30,744 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:41:30,744 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:41:30,745 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:41:30,745 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:41:30,745 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:41:30,746 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:41:30,747 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:41:30,748 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db9b40f-24c0-4634-baa6-3169ebf86b32/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 07:41:30,770 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:41:30,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:41:30,770 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:41:30,771 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:41:30,771 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:41:30,772 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:41:30,772 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:41:30,772 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:41:30,773 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:41:30,773 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:41:30,773 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:41:30,773 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:41:30,773 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:41:30,774 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:41:30,774 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:41:30,774 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:41:30,774 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:41:30,774 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:41:30,775 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:41:30,775 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:41:30,775 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:41:30,776 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:41:30,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:41:30,776 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:41:30,776 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:41:30,776 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:41:30,776 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:41:30,777 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:41:30,777 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:41:30,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:41:30,777 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:41:30,777 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:41:30,778 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:41:30,778 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:41:30,778 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:41:30,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:41:30,778 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:41:30,779 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:41:30,779 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_4db9b40f-24c0-4634-baa6-3169ebf86b32/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db9b40f-24c0-4634-baa6-3169ebf86b32/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b9b8810066c6b805a125dba67c1c1409161534a09c0fedd6964ff3375355a5b [2022-11-19 07:41:31,060 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:41:31,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:41:31,094 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:41:31,096 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:41:31,097 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:41:31,098 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db9b40f-24c0-4634-baa6-3169ebf86b32/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--r8152.ko-entry_point.cil.out.i [2022-11-19 07:41:31,173 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db9b40f-24c0-4634-baa6-3169ebf86b32/bin/utaipan-I9t0OCRTmS/data/93a6de355/7ae26ee1e8e94f18a67b0308dfc48b6f/FLAGfb0f11f81 [2022-11-19 07:41:32,148 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:41:32,148 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db9b40f-24c0-4634-baa6-3169ebf86b32/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--r8152.ko-entry_point.cil.out.i [2022-11-19 07:41:32,236 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db9b40f-24c0-4634-baa6-3169ebf86b32/bin/utaipan-I9t0OCRTmS/data/93a6de355/7ae26ee1e8e94f18a67b0308dfc48b6f/FLAGfb0f11f81 [2022-11-19 07:41:32,523 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db9b40f-24c0-4634-baa6-3169ebf86b32/bin/utaipan-I9t0OCRTmS/data/93a6de355/7ae26ee1e8e94f18a67b0308dfc48b6f [2022-11-19 07:41:32,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:41:32,529 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:41:32,534 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:41:32,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:41:32,538 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:41:32,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:41:32" (1/1) ... [2022-11-19 07:41:32,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3470d9d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:32, skipping insertion in model container [2022-11-19 07:41:32,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:41:32" (1/1) ... [2022-11-19 07:41:32,552 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:41:32,737 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:41:34,092 WARN L234 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_4db9b40f-24c0-4634-baa6-3169ebf86b32/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--r8152.ko-entry_point.cil.out.i[196184,196197] [2022-11-19 07:41:35,642 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:41:35,712 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:41:35,902 WARN L234 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_4db9b40f-24c0-4634-baa6-3169ebf86b32/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--r8152.ko-entry_point.cil.out.i[196184,196197] [2022-11-19 07:41:36,333 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:41:36,572 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:41:36,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:36 WrapperNode [2022-11-19 07:41:36,573 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:41:36,574 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:41:36,574 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:41:36,574 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:41:36,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:36" (1/1) ... [2022-11-19 07:41:36,702 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:36" (1/1) ... [2022-11-19 07:41:36,859 INFO L138 Inliner]: procedures = 372, calls = 2044, calls flagged for inlining = 175, calls inlined = 127, statements flattened = 4746 [2022-11-19 07:41:36,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:41:36,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:41:36,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:41:36,861 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:41:36,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:36" (1/1) ... [2022-11-19 07:41:36,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:36" (1/1) ... [2022-11-19 07:41:36,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:36" (1/1) ... [2022-11-19 07:41:36,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:36" (1/1) ... [2022-11-19 07:41:37,018 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:36" (1/1) ... [2022-11-19 07:41:37,056 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:36" (1/1) ... [2022-11-19 07:41:37,094 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:36" (1/1) ... [2022-11-19 07:41:37,121 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:36" (1/1) ... [2022-11-19 07:41:37,162 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:41:37,165 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:41:37,165 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:41:37,165 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:41:37,169 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:36" (1/1) ... [2022-11-19 07:41:37,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:41:37,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db9b40f-24c0-4634-baa6-3169ebf86b32/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:41:37,202 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db9b40f-24c0-4634-baa6-3169ebf86b32/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:41:37,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db9b40f-24c0-4634-baa6-3169ebf86b32/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:41:37,250 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-19 07:41:37,250 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-19 07:41:37,250 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-11-19 07:41:37,250 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-11-19 07:41:37,289 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-19 07:41:37,289 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-19 07:41:37,289 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-11-19 07:41:37,289 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-11-19 07:41:37,290 INFO L130 BoogieDeclarations]: Found specification of procedure device_set_wakeup_enable [2022-11-19 07:41:37,290 INFO L138 BoogieDeclarations]: Found implementation of procedure device_set_wakeup_enable [2022-11-19 07:41:37,290 INFO L130 BoogieDeclarations]: Found specification of procedure ocp_write_byte [2022-11-19 07:41:37,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ocp_write_byte [2022-11-19 07:41:37,290 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 07:41:37,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 07:41:37,290 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 07:41:37,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 07:41:37,290 INFO L130 BoogieDeclarations]: Found specification of procedure rtl_work_func_t [2022-11-19 07:41:37,291 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl_work_func_t [2022-11-19 07:41:37,291 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2022-11-19 07:41:37,291 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2022-11-19 07:41:37,291 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-19 07:41:37,291 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-19 07:41:37,291 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-19 07:41:37,291 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-19 07:41:37,291 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 07:41:37,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 07:41:37,291 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8152_disconnect [2022-11-19 07:41:37,292 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8152_disconnect [2022-11-19 07:41:37,292 INFO L130 BoogieDeclarations]: Found specification of procedure rtl_enable [2022-11-19 07:41:37,292 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl_enable [2022-11-19 07:41:37,292 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-11-19 07:41:37,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-11-19 07:41:37,292 INFO L130 BoogieDeclarations]: Found specification of procedure set_carrier [2022-11-19 07:41:37,292 INFO L138 BoogieDeclarations]: Found implementation of procedure set_carrier [2022-11-19 07:41:37,292 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8152_set_speed [2022-11-19 07:41:37,292 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8152_set_speed [2022-11-19 07:41:37,292 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_get_interface [2022-11-19 07:41:37,293 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_get_interface [2022-11-19 07:41:37,293 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_head_init [2022-11-19 07:41:37,293 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_head_init [2022-11-19 07:41:37,293 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-11-19 07:41:37,293 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-11-19 07:41:37,293 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 07:41:37,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 07:41:37,293 INFO L130 BoogieDeclarations]: Found specification of procedure pla_ocp_read [2022-11-19 07:41:37,293 INFO L138 BoogieDeclarations]: Found implementation of procedure pla_ocp_read [2022-11-19 07:41:37,293 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-19 07:41:37,294 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-19 07:41:37,294 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-19 07:41:37,294 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-19 07:41:37,294 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8152_nic_reset [2022-11-19 07:41:37,294 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8152_nic_reset [2022-11-19 07:41:37,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 07:41:37,294 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 07:41:37,294 INFO L130 BoogieDeclarations]: Found specification of procedure ocp_reg_read [2022-11-19 07:41:37,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ocp_reg_read [2022-11-19 07:41:37,294 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 07:41:37,295 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 07:41:37,295 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-19 07:41:37,295 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-19 07:41:37,295 INFO L130 BoogieDeclarations]: Found specification of procedure generic_ocp_write [2022-11-19 07:41:37,295 INFO L138 BoogieDeclarations]: Found implementation of procedure generic_ocp_write [2022-11-19 07:41:37,295 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_schedule [2022-11-19 07:41:37,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_schedule [2022-11-19 07:41:37,295 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-19 07:41:37,295 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-19 07:41:37,295 INFO L130 BoogieDeclarations]: Found specification of procedure rtl_set_eee_plus [2022-11-19 07:41:37,296 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl_set_eee_plus [2022-11-19 07:41:37,296 INFO L130 BoogieDeclarations]: Found specification of procedure ocp_write_dword [2022-11-19 07:41:37,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ocp_write_dword [2022-11-19 07:41:37,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:41:37,296 INFO L130 BoogieDeclarations]: Found specification of procedure tx_agg_align [2022-11-19 07:41:37,296 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_agg_align [2022-11-19 07:41:37,296 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-19 07:41:37,296 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-19 07:41:37,296 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2022-11-19 07:41:37,296 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2022-11-19 07:41:37,297 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-19 07:41:37,297 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-19 07:41:37,297 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:41:37,297 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-11-19 07:41:37,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-11-19 07:41:37,297 INFO L130 BoogieDeclarations]: Found specification of procedure pla_ocp_write [2022-11-19 07:41:37,297 INFO L138 BoogieDeclarations]: Found implementation of procedure pla_ocp_write [2022-11-19 07:41:37,297 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-19 07:41:37,298 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-19 07:41:37,298 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-19 07:41:37,298 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-19 07:41:37,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2022-11-19 07:41:37,298 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-19 07:41:37,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-19 07:41:37,298 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8152_get_speed [2022-11-19 07:41:37,298 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8152_get_speed [2022-11-19 07:41:37,299 INFO L130 BoogieDeclarations]: Found specification of procedure ocp_reg_write [2022-11-19 07:41:37,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ocp_reg_write [2022-11-19 07:41:37,299 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8152_tx_timeout [2022-11-19 07:41:37,299 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8152_tx_timeout [2022-11-19 07:41:37,299 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8152_disable [2022-11-19 07:41:37,299 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8152_disable [2022-11-19 07:41:37,299 INFO L130 BoogieDeclarations]: Found specification of procedure ocp_read_dword [2022-11-19 07:41:37,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ocp_read_dword [2022-11-19 07:41:37,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:41:37,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 07:41:37,300 INFO L130 BoogieDeclarations]: Found specification of procedure rx_agg_align [2022-11-19 07:41:37,300 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_agg_align [2022-11-19 07:41:37,300 INFO L130 BoogieDeclarations]: Found specification of procedure __rtl_get_wol [2022-11-19 07:41:37,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __rtl_get_wol [2022-11-19 07:41:37,300 INFO L130 BoogieDeclarations]: Found specification of procedure r8152_mdio_write [2022-11-19 07:41:37,300 INFO L138 BoogieDeclarations]: Found implementation of procedure r8152_mdio_write [2022-11-19 07:41:37,300 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2022-11-19 07:41:37,301 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2022-11-19 07:41:37,301 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-19 07:41:37,301 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-19 07:41:37,301 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2022-11-19 07:41:37,301 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2022-11-19 07:41:37,301 INFO L130 BoogieDeclarations]: Found specification of procedure ldv___skb_dequeue_14 [2022-11-19 07:41:37,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv___skb_dequeue_14 [2022-11-19 07:41:37,301 INFO L130 BoogieDeclarations]: Found specification of procedure r8152_submit_rx [2022-11-19 07:41:37,302 INFO L138 BoogieDeclarations]: Found implementation of procedure r8152_submit_rx [2022-11-19 07:41:37,302 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-19 07:41:37,302 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-19 07:41:37,302 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-11-19 07:41:37,302 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-11-19 07:41:37,302 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-19 07:41:37,302 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-19 07:41:37,302 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-19 07:41:37,302 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-19 07:41:37,303 INFO L130 BoogieDeclarations]: Found specification of procedure __rtl_set_wol [2022-11-19 07:41:37,303 INFO L138 BoogieDeclarations]: Found implementation of procedure __rtl_set_wol [2022-11-19 07:41:37,303 INFO L130 BoogieDeclarations]: Found specification of procedure r8152_power_cut_en [2022-11-19 07:41:37,303 INFO L138 BoogieDeclarations]: Found implementation of procedure r8152_power_cut_en [2022-11-19 07:41:37,303 INFO L130 BoogieDeclarations]: Found specification of procedure ocp_write_word [2022-11-19 07:41:37,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ocp_write_word [2022-11-19 07:41:37,303 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-11-19 07:41:37,303 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-11-19 07:41:37,303 INFO L130 BoogieDeclarations]: Found specification of procedure r8152b_enable_fc [2022-11-19 07:41:37,304 INFO L138 BoogieDeclarations]: Found implementation of procedure r8152b_enable_fc [2022-11-19 07:41:37,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 07:41:37,304 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-19 07:41:37,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-19 07:41:37,304 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-19 07:41:37,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-19 07:41:37,304 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-19 07:41:37,304 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-19 07:41:37,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 07:41:37,305 INFO L130 BoogieDeclarations]: Found specification of procedure usb_mark_last_busy [2022-11-19 07:41:37,305 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_mark_last_busy [2022-11-19 07:41:37,305 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface [2022-11-19 07:41:37,305 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface [2022-11-19 07:41:37,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:41:37,305 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-19 07:41:37,305 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-19 07:41:37,306 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_splice_init [2022-11-19 07:41:37,306 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_splice_init [2022-11-19 07:41:37,306 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_disable [2022-11-19 07:41:37,306 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_disable [2022-11-19 07:41:37,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 07:41:37,306 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 07:41:37,306 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-11-19 07:41:37,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-11-19 07:41:37,306 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_node [2022-11-19 07:41:37,307 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_node [2022-11-19 07:41:37,307 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-19 07:41:37,307 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-19 07:41:37,307 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-19 07:41:37,307 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-19 07:41:37,307 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-19 07:41:37,307 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-19 07:41:37,307 INFO L130 BoogieDeclarations]: Found specification of procedure sram_read [2022-11-19 07:41:37,308 INFO L138 BoogieDeclarations]: Found implementation of procedure sram_read [2022-11-19 07:41:37,308 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 07:41:37,308 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 07:41:37,308 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-19 07:41:37,308 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-19 07:41:37,308 INFO L130 BoogieDeclarations]: Found specification of procedure r8153_teredo_off [2022-11-19 07:41:37,308 INFO L138 BoogieDeclarations]: Found implementation of procedure r8153_teredo_off [2022-11-19 07:41:37,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:41:37,309 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2022-11-19 07:41:37,309 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2022-11-19 07:41:37,309 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8152_open [2022-11-19 07:41:37,309 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8152_open [2022-11-19 07:41:37,309 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 07:41:37,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 07:41:37,309 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface_async [2022-11-19 07:41:37,309 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface_async [2022-11-19 07:41:37,309 INFO L130 BoogieDeclarations]: Found specification of procedure rtl_runtime_suspend_enable [2022-11-19 07:41:37,310 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl_runtime_suspend_enable [2022-11-19 07:41:37,310 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8152_close [2022-11-19 07:41:37,310 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8152_close [2022-11-19 07:41:37,310 INFO L130 BoogieDeclarations]: Found specification of procedure r8153_power_cut_en [2022-11-19 07:41:37,310 INFO L138 BoogieDeclarations]: Found implementation of procedure r8153_power_cut_en [2022-11-19 07:41:37,310 INFO L130 BoogieDeclarations]: Found specification of procedure r8153_u1u2en [2022-11-19 07:41:37,310 INFO L138 BoogieDeclarations]: Found implementation of procedure r8153_u1u2en [2022-11-19 07:41:37,310 INFO L130 BoogieDeclarations]: Found specification of procedure generic_ocp_read [2022-11-19 07:41:37,310 INFO L138 BoogieDeclarations]: Found implementation of procedure generic_ocp_read [2022-11-19 07:41:37,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:41:37,311 INFO L130 BoogieDeclarations]: Found specification of procedure r8153_enable_aldps [2022-11-19 07:41:37,311 INFO L138 BoogieDeclarations]: Found implementation of procedure r8153_enable_aldps [2022-11-19 07:41:37,311 INFO L130 BoogieDeclarations]: Found specification of procedure rtl_tally_reset [2022-11-19 07:41:37,311 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl_tally_reset [2022-11-19 07:41:37,311 INFO L130 BoogieDeclarations]: Found specification of procedure rtl_drop_queued_tx [2022-11-19 07:41:37,311 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl_drop_queued_tx [2022-11-19 07:41:37,311 INFO L130 BoogieDeclarations]: Found specification of procedure r8152_mdio_read [2022-11-19 07:41:37,311 INFO L138 BoogieDeclarations]: Found implementation of procedure r8152_mdio_read [2022-11-19 07:41:37,312 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8152_resume [2022-11-19 07:41:37,312 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8152_resume [2022-11-19 07:41:37,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:41:37,312 INFO L130 BoogieDeclarations]: Found specification of procedure rxdy_gated_en [2022-11-19 07:41:37,312 INFO L138 BoogieDeclarations]: Found implementation of procedure rxdy_gated_en [2022-11-19 07:41:37,312 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-19 07:41:37,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-19 07:41:37,312 INFO L130 BoogieDeclarations]: Found specification of procedure rtl_clear_bp [2022-11-19 07:41:37,312 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl_clear_bp [2022-11-19 07:41:37,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:41:37,332 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 07:41:37,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 07:41:37,332 INFO L130 BoogieDeclarations]: Found specification of procedure r8152b_enable_aldps [2022-11-19 07:41:37,332 INFO L138 BoogieDeclarations]: Found implementation of procedure r8152b_enable_aldps [2022-11-19 07:41:37,332 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-19 07:41:37,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-19 07:41:37,332 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2022-11-19 07:41:37,333 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2022-11-19 07:41:37,333 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_splice [2022-11-19 07:41:37,333 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_splice [2022-11-19 07:41:37,333 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2022-11-19 07:41:37,333 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2022-11-19 07:41:37,333 INFO L130 BoogieDeclarations]: Found specification of procedure free_all_mem [2022-11-19 07:41:37,333 INFO L138 BoogieDeclarations]: Found implementation of procedure free_all_mem [2022-11-19 07:41:37,333 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-19 07:41:37,333 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-19 07:41:37,333 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_len [2022-11-19 07:41:37,334 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_len [2022-11-19 07:41:37,334 INFO L130 BoogieDeclarations]: Found specification of procedure ocp_read_byte [2022-11-19 07:41:37,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ocp_read_byte [2022-11-19 07:41:37,334 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8152_set_mac_address [2022-11-19 07:41:37,334 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8152_set_mac_address [2022-11-19 07:41:37,334 INFO L130 BoogieDeclarations]: Found specification of procedure sram_write [2022-11-19 07:41:37,334 INFO L138 BoogieDeclarations]: Found implementation of procedure sram_write [2022-11-19 07:41:37,334 INFO L130 BoogieDeclarations]: Found specification of procedure ocp_read_word [2022-11-19 07:41:37,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ocp_read_word [2022-11-19 07:41:37,335 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-19 07:41:37,335 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-19 07:41:37,335 INFO L130 BoogieDeclarations]: Found specification of procedure set_tx_qlen [2022-11-19 07:41:37,335 INFO L138 BoogieDeclarations]: Found implementation of procedure set_tx_qlen [2022-11-19 07:41:37,335 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-19 07:41:37,335 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-19 07:41:37,335 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8152_set_rx_mode [2022-11-19 07:41:37,335 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8152_set_rx_mode [2022-11-19 07:41:37,335 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8152_ioctl [2022-11-19 07:41:37,336 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8152_ioctl [2022-11-19 07:41:37,336 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2022-11-19 07:41:37,336 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2022-11-19 07:41:37,336 INFO L130 BoogieDeclarations]: Found specification of procedure get_registers [2022-11-19 07:41:37,336 INFO L138 BoogieDeclarations]: Found implementation of procedure get_registers [2022-11-19 07:41:37,336 INFO L130 BoogieDeclarations]: Found specification of procedure r8152b_disable_aldps [2022-11-19 07:41:37,336 INFO L138 BoogieDeclarations]: Found implementation of procedure r8152b_disable_aldps [2022-11-19 07:41:37,336 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-19 07:41:37,336 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-19 07:41:37,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:41:37,337 INFO L130 BoogieDeclarations]: Found specification of procedure set_registers [2022-11-19 07:41:37,337 INFO L138 BoogieDeclarations]: Found implementation of procedure set_registers [2022-11-19 07:41:37,337 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-11-19 07:41:37,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:41:37,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:41:37,337 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_enable [2022-11-19 07:41:37,337 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_enable [2022-11-19 07:41:37,337 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-19 07:41:37,337 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-19 07:41:38,140 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:41:38,148 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:41:38,359 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 07:42:39,961 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:42:42,536 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:42:42,536 INFO L300 CfgBuilder]: Removed 15 assume(true) statements. [2022-11-19 07:42:42,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:42:42 BoogieIcfgContainer [2022-11-19 07:42:42,542 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:42:42,545 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:42:42,545 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:42:42,549 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:42:42,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:41:32" (1/3) ... [2022-11-19 07:42:42,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75369e34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:42:42, skipping insertion in model container [2022-11-19 07:42:42,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:36" (2/3) ... [2022-11-19 07:42:42,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75369e34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:42:42, skipping insertion in model container [2022-11-19 07:42:42,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:42:42" (3/3) ... [2022-11-19 07:42:42,554 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--r8152.ko-entry_point.cil.out.i [2022-11-19 07:42:42,573 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:42:42,573 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:42:42,703 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:42:42,713 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;@60beadf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:42:42,714 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:42:42,726 INFO L276 IsEmpty]: Start isEmpty. Operand has 1831 states, 1027 states have (on average 1.3174294060370009) internal successors, (1353), 1091 states have internal predecessors, (1353), 689 states have call successors, (689), 125 states have call predecessors, (689), 124 states have return successors, (684), 669 states have call predecessors, (684), 684 states have call successors, (684) [2022-11-19 07:42:42,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-19 07:42:42,742 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:42:42,743 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:42:42,744 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:42:42,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:42:42,751 INFO L85 PathProgramCache]: Analyzing trace with hash -331816151, now seen corresponding path program 1 times [2022-11-19 07:42:42,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:42:42,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020288906] [2022-11-19 07:42:42,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:42:42,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:42:43,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:42:44,216 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-19 07:42:44,217 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:42:44,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020288906] [2022-11-19 07:42:44,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020288906] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:42:44,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:42:44,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:42:44,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515049593] [2022-11-19 07:42:44,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:42:44,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:42:44,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:42:44,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:42:44,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:42:44,275 INFO L87 Difference]: Start difference. First operand has 1831 states, 1027 states have (on average 1.3174294060370009) internal successors, (1353), 1091 states have internal predecessors, (1353), 689 states have call successors, (689), 125 states have call predecessors, (689), 124 states have return successors, (684), 669 states have call predecessors, (684), 684 states have call successors, (684) Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-19 07:42:46,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:42:49,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:42:51,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:42:53,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:42:55,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:42:58,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:42:58,178 INFO L93 Difference]: Finished difference Result 5323 states and 7990 transitions. [2022-11-19 07:42:58,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:42:58,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 64 [2022-11-19 07:42:58,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:42:58,244 INFO L225 Difference]: With dead ends: 5323 [2022-11-19 07:42:58,245 INFO L226 Difference]: Without dead ends: 3497 [2022-11-19 07:42:58,270 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 [2022-11-19 07:42:58,273 INFO L413 NwaCegarLoop]: 3670 mSDtfsCounter, 2528 mSDsluCounter, 2380 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2528 SdHoareTripleChecker+Valid, 6050 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:42:58,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2528 Valid, 6050 Invalid, 632 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 622 Invalid, 3 Unknown, 0 Unchecked, 13.5s Time] [2022-11-19 07:42:58,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3497 states. [2022-11-19 07:42:58,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3497 to 3496. [2022-11-19 07:42:58,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3496 states, 1936 states have (on average 1.3083677685950412) internal successors, (2533), 2027 states have internal predecessors, (2533), 1314 states have call successors, (1314), 246 states have call predecessors, (1314), 245 states have return successors, (1313), 1282 states have call predecessors, (1313), 1313 states have call successors, (1313) [2022-11-19 07:42:58,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3496 states to 3496 states and 5160 transitions. [2022-11-19 07:42:58,630 INFO L78 Accepts]: Start accepts. Automaton has 3496 states and 5160 transitions. Word has length 64 [2022-11-19 07:42:58,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:42:58,632 INFO L495 AbstractCegarLoop]: Abstraction has 3496 states and 5160 transitions. [2022-11-19 07:42:58,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-19 07:42:58,633 INFO L276 IsEmpty]: Start isEmpty. Operand 3496 states and 5160 transitions. [2022-11-19 07:42:58,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-19 07:42:58,647 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:42:58,648 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:42:58,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:42:58,648 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:42:58,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:42:58,649 INFO L85 PathProgramCache]: Analyzing trace with hash -455547436, now seen corresponding path program 1 times [2022-11-19 07:42:58,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:42:58,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133172396] [2022-11-19 07:42:58,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:42:58,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:42:58,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:43:00,013 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-19 07:43:00,013 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:43:00,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133172396] [2022-11-19 07:43:00,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133172396] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:43:00,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:43:00,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:43:00,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373298756] [2022-11-19 07:43:00,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:43:00,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:43:00,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:43:00,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:43:00,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:43:00,017 INFO L87 Difference]: Start difference. First operand 3496 states and 5160 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-19 07:43:02,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:43:05,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:43:07,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:43:09,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:43:12,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:43:17,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:43:17,730 INFO L93 Difference]: Finished difference Result 6931 states and 10297 transitions. [2022-11-19 07:43:17,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:43:17,731 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 73 [2022-11-19 07:43:17,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:43:17,825 INFO L225 Difference]: With dead ends: 6931 [2022-11-19 07:43:17,825 INFO L226 Difference]: Without dead ends: 6926 [2022-11-19 07:43:17,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:43:17,836 INFO L413 NwaCegarLoop]: 3747 mSDtfsCounter, 2533 mSDsluCounter, 6151 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2533 SdHoareTripleChecker+Valid, 9898 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:43:17,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2533 Valid, 9898 Invalid, 1009 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 1004 Invalid, 5 Unknown, 0 Unchecked, 17.2s Time] [2022-11-19 07:43:17,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6926 states. [2022-11-19 07:43:18,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6926 to 6915. [2022-11-19 07:43:18,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6915 states, 3823 states have (on average 1.3094428459325138) internal successors, (5006), 4006 states have internal predecessors, (5006), 2602 states have call successors, (2602), 490 states have call predecessors, (2602), 489 states have return successors, (2669), 2536 states have call predecessors, (2669), 2601 states have call successors, (2669) [2022-11-19 07:43:18,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6915 states to 6915 states and 10277 transitions. [2022-11-19 07:43:18,417 INFO L78 Accepts]: Start accepts. Automaton has 6915 states and 10277 transitions. Word has length 73 [2022-11-19 07:43:18,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:43:18,420 INFO L495 AbstractCegarLoop]: Abstraction has 6915 states and 10277 transitions. [2022-11-19 07:43:18,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-19 07:43:18,421 INFO L276 IsEmpty]: Start isEmpty. Operand 6915 states and 10277 transitions. [2022-11-19 07:43:18,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-19 07:43:18,431 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:43:18,432 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-11-19 07:43:18,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:43:18,433 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:43:18,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:43:18,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1360188157, now seen corresponding path program 1 times [2022-11-19 07:43:18,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:43:18,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282534186] [2022-11-19 07:43:18,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:43:18,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:43:24,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:43:31,873 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-19 07:43:31,874 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:43:31,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282534186] [2022-11-19 07:43:31,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282534186] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:43:31,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:43:31,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:43:31,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013763596] [2022-11-19 07:43:31,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:43:31,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:43:31,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:43:31,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:43:31,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:43:31,877 INFO L87 Difference]: Start difference. First operand 6915 states and 10277 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 07:43:33,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:43:36,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:43:38,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:43:41,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:43:42,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:43:46,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:43:46,022 INFO L93 Difference]: Finished difference Result 20310 states and 30148 transitions. [2022-11-19 07:43:46,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:43:46,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 100 [2022-11-19 07:43:46,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:43:46,166 INFO L225 Difference]: With dead ends: 20310 [2022-11-19 07:43:46,166 INFO L226 Difference]: Without dead ends: 13414 [2022-11-19 07:43:46,226 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 [2022-11-19 07:43:46,227 INFO L413 NwaCegarLoop]: 3669 mSDtfsCounter, 2393 mSDsluCounter, 2354 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2393 SdHoareTripleChecker+Valid, 6023 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:43:46,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2393 Valid, 6023 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 651 Invalid, 3 Unknown, 0 Unchecked, 13.3s Time] [2022-11-19 07:43:46,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13414 states. [2022-11-19 07:43:47,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13414 to 13407. [2022-11-19 07:43:47,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13407 states, 7361 states have (on average 1.3055291400624915) internal successors, (9610), 7724 states have internal predecessors, (9610), 5072 states have call successors, (5072), 974 states have call predecessors, (5072), 973 states have return successors, (5207), 4942 states have call predecessors, (5207), 5071 states have call successors, (5207) [2022-11-19 07:43:47,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13407 states to 13407 states and 19889 transitions. [2022-11-19 07:43:47,302 INFO L78 Accepts]: Start accepts. Automaton has 13407 states and 19889 transitions. Word has length 100 [2022-11-19 07:43:47,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:43:47,304 INFO L495 AbstractCegarLoop]: Abstraction has 13407 states and 19889 transitions. [2022-11-19 07:43:47,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 07:43:47,305 INFO L276 IsEmpty]: Start isEmpty. Operand 13407 states and 19889 transitions. [2022-11-19 07:43:47,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-19 07:43:47,435 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:43:47,435 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 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] [2022-11-19 07:43:47,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:43:47,435 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:43:47,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:43:47,436 INFO L85 PathProgramCache]: Analyzing trace with hash 927268780, now seen corresponding path program 1 times [2022-11-19 07:43:47,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:43:47,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122884180] [2022-11-19 07:43:47,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:43:47,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:43:49,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:43:57,434 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-11-19 07:43:57,434 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:43:57,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122884180] [2022-11-19 07:43:57,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122884180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:43:57,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:43:57,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:43:57,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407115147] [2022-11-19 07:43:57,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:43:57,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:43:57,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:43:57,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:43:57,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:43:57,440 INFO L87 Difference]: Start difference. First operand 13407 states and 19889 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:43:59,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:44:02,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:44:04,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:44:07,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:44:11,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:44:11,203 INFO L93 Difference]: Finished difference Result 39674 states and 58766 transitions. [2022-11-19 07:44:11,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:44:11,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 115 [2022-11-19 07:44:11,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:44:11,638 INFO L225 Difference]: With dead ends: 39674 [2022-11-19 07:44:11,639 INFO L226 Difference]: Without dead ends: 26286 [2022-11-19 07:44:11,764 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 [2022-11-19 07:44:11,767 INFO L413 NwaCegarLoop]: 4110 mSDtfsCounter, 2431 mSDsluCounter, 2362 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2431 SdHoareTripleChecker+Valid, 6472 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:44:11,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2431 Valid, 6472 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 692 Invalid, 4 Unknown, 0 Unchecked, 12.7s Time] [2022-11-19 07:44:11,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26286 states. [2022-11-19 07:44:13,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26286 to 26275. [2022-11-19 07:44:13,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26275 states, 14369 states have (on average 1.3025262718352009) internal successors, (18716), 15064 states have internal predecessors, (18716), 9960 states have call successors, (9960), 1946 states have call predecessors, (9960), 1945 states have return successors, (10211), 9714 states have call predecessors, (10211), 9959 states have call successors, (10211) [2022-11-19 07:44:14,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26275 states to 26275 states and 38887 transitions. [2022-11-19 07:44:14,118 INFO L78 Accepts]: Start accepts. Automaton has 26275 states and 38887 transitions. Word has length 115 [2022-11-19 07:44:14,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:44:14,118 INFO L495 AbstractCegarLoop]: Abstraction has 26275 states and 38887 transitions. [2022-11-19 07:44:14,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:44:14,119 INFO L276 IsEmpty]: Start isEmpty. Operand 26275 states and 38887 transitions. [2022-11-19 07:44:14,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-19 07:44:14,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:44:14,140 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 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] [2022-11-19 07:44:14,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:44:14,141 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:44:14,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:44:14,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1799292940, now seen corresponding path program 1 times [2022-11-19 07:44:14,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:44:14,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679367991] [2022-11-19 07:44:14,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:44:14,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:44:19,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:44:51,681 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2022-11-19 07:44:51,682 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:44:51,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679367991] [2022-11-19 07:44:51,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679367991] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:44:51,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:44:51,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:44:51,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140839260] [2022-11-19 07:44:51,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:44:51,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:44:51,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:44:51,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:44:51,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:44:51,685 INFO L87 Difference]: Start difference. First operand 26275 states and 38887 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 07:44:53,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:44:56,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:44:58,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:45:01,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:45:02,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:45:06,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:45:11,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:45:11,351 INFO L93 Difference]: Finished difference Result 52478 states and 77918 transitions. [2022-11-19 07:45:11,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:45:11,351 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 124 [2022-11-19 07:45:11,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:45:11,844 INFO L225 Difference]: With dead ends: 52478 [2022-11-19 07:45:11,844 INFO L226 Difference]: Without dead ends: 52473 [2022-11-19 07:45:11,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:45:11,885 INFO L413 NwaCegarLoop]: 3925 mSDtfsCounter, 2502 mSDsluCounter, 6329 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2502 SdHoareTripleChecker+Valid, 10254 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:45:11,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2502 Valid, 10254 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1059 Invalid, 3 Unknown, 0 Unchecked, 17.9s Time] [2022-11-19 07:45:11,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52473 states. [2022-11-19 07:45:15,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52473 to 52439. [2022-11-19 07:45:15,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52439 states, 28659 states have (on average 1.3025576607697407) internal successors, (37330), 30048 states have internal predecessors, (37330), 19890 states have call successors, (19890), 3890 states have call predecessors, (19890), 3889 states have return successors, (20645), 19398 states have call predecessors, (20645), 19889 states have call successors, (20645) [2022-11-19 07:45:16,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52439 states to 52439 states and 77865 transitions. [2022-11-19 07:45:16,114 INFO L78 Accepts]: Start accepts. Automaton has 52439 states and 77865 transitions. Word has length 124 [2022-11-19 07:45:16,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:45:16,115 INFO L495 AbstractCegarLoop]: Abstraction has 52439 states and 77865 transitions. [2022-11-19 07:45:16,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 07:45:16,116 INFO L276 IsEmpty]: Start isEmpty. Operand 52439 states and 77865 transitions. [2022-11-19 07:45:16,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-19 07:45:16,154 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:45:16,154 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:45:16,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:45:16,155 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:45:16,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:45:16,156 INFO L85 PathProgramCache]: Analyzing trace with hash -2019139999, now seen corresponding path program 1 times [2022-11-19 07:45:16,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:45:16,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974060616] [2022-11-19 07:45:16,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:45:16,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:45:18,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:45:25,329 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-11-19 07:45:25,330 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:45:25,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974060616] [2022-11-19 07:45:25,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974060616] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:45:25,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:45:25,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:45:25,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736801036] [2022-11-19 07:45:25,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:45:25,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:45:25,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:45:25,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:45:25,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:45:25,333 INFO L87 Difference]: Start difference. First operand 52439 states and 77865 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 07:45:27,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:45:31,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:45:33,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:45:35,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:45:38,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:45:38,740 INFO L93 Difference]: Finished difference Result 81982 states and 121650 transitions. [2022-11-19 07:45:38,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:45:38,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 130 [2022-11-19 07:45:38,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:45:39,144 INFO L225 Difference]: With dead ends: 81982 [2022-11-19 07:45:39,144 INFO L226 Difference]: Without dead ends: 29556 [2022-11-19 07:45:39,516 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 [2022-11-19 07:45:39,518 INFO L413 NwaCegarLoop]: 2377 mSDtfsCounter, 5 mSDsluCounter, 2374 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 4751 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:45:39,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 4751 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 522 Invalid, 4 Unknown, 0 Unchecked, 11.6s Time] [2022-11-19 07:45:39,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29556 states. [2022-11-19 07:45:41,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29556 to 29474. [2022-11-19 07:45:41,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29474 states, 16090 states have (on average 1.3016159105034182) internal successors, (20943), 16867 states have internal predecessors, (20943), 11180 states have call successors, (11180), 2204 states have call predecessors, (11180), 2203 states have return successors, (11586), 10906 states have call predecessors, (11586), 11179 states have call successors, (11586) [2022-11-19 07:45:41,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29474 states to 29474 states and 43709 transitions. [2022-11-19 07:45:41,292 INFO L78 Accepts]: Start accepts. Automaton has 29474 states and 43709 transitions. Word has length 130 [2022-11-19 07:45:41,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:45:41,292 INFO L495 AbstractCegarLoop]: Abstraction has 29474 states and 43709 transitions. [2022-11-19 07:45:41,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 07:45:41,293 INFO L276 IsEmpty]: Start isEmpty. Operand 29474 states and 43709 transitions. [2022-11-19 07:45:41,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-19 07:45:41,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:45:41,329 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:45:41,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:45:41,329 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:45:41,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:45:41,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1227543896, now seen corresponding path program 1 times [2022-11-19 07:45:41,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:45:41,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192163547] [2022-11-19 07:45:41,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:45:41,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:45:45,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:46:18,794 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2022-11-19 07:46:18,794 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:46:18,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192163547] [2022-11-19 07:46:18,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192163547] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:46:18,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:46:18,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:46:18,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91451599] [2022-11-19 07:46:18,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:46:18,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:46:18,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:46:18,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:46:18,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:46:18,797 INFO L87 Difference]: Start difference. First operand 29474 states and 43709 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 07:46:20,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:46:24,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:46:26,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:46:28,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:46:33,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:46:33,666 INFO L93 Difference]: Finished difference Result 36068 states and 53525 transitions. [2022-11-19 07:46:33,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:46:33,667 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), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 148 [2022-11-19 07:46:33,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:46:33,982 INFO L225 Difference]: With dead ends: 36068 [2022-11-19 07:46:33,983 INFO L226 Difference]: Without dead ends: 36062 [2022-11-19 07:46:34,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:46:34,160 INFO L413 NwaCegarLoop]: 3199 mSDtfsCounter, 2496 mSDsluCounter, 5603 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2496 SdHoareTripleChecker+Valid, 8802 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:46:34,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2496 Valid, 8802 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 862 Invalid, 4 Unknown, 0 Unchecked, 13.8s Time] [2022-11-19 07:46:34,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36062 states. [2022-11-19 07:46:35,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36062 to 29475. [2022-11-19 07:46:35,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29475 states, 16091 states have (on average 1.3015971661177055) internal successors, (20944), 16867 states have internal predecessors, (20944), 11180 states have call successors, (11180), 2204 states have call predecessors, (11180), 2203 states have return successors, (11586), 10907 states have call predecessors, (11586), 11179 states have call successors, (11586) [2022-11-19 07:46:35,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29475 states to 29475 states and 43710 transitions. [2022-11-19 07:46:35,913 INFO L78 Accepts]: Start accepts. Automaton has 29475 states and 43710 transitions. Word has length 148 [2022-11-19 07:46:35,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:46:35,914 INFO L495 AbstractCegarLoop]: Abstraction has 29475 states and 43710 transitions. [2022-11-19 07:46:35,914 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), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 07:46:35,914 INFO L276 IsEmpty]: Start isEmpty. Operand 29475 states and 43710 transitions. [2022-11-19 07:46:36,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-11-19 07:46:36,004 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:46:36,004 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:46:36,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 07:46:36,004 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:46:36,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:46:36,005 INFO L85 PathProgramCache]: Analyzing trace with hash -434978862, now seen corresponding path program 1 times [2022-11-19 07:46:36,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:46:36,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077873717] [2022-11-19 07:46:36,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:46:36,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:46:36,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:46:36,736 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2022-11-19 07:46:36,736 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:46:36,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077873717] [2022-11-19 07:46:36,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077873717] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:46:36,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:46:36,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:46:36,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513511384] [2022-11-19 07:46:36,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:46:36,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:46:36,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:46:36,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:46:36,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:46:36,739 INFO L87 Difference]: Start difference. First operand 29475 states and 43710 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-19 07:46:38,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:46:42,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:46:44,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:46:46,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:46:52,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:46:52,119 INFO L93 Difference]: Finished difference Result 68773 states and 102043 transitions. [2022-11-19 07:46:52,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:46:52,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 214 [2022-11-19 07:46:52,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:46:52,446 INFO L225 Difference]: With dead ends: 68773 [2022-11-19 07:46:52,447 INFO L226 Difference]: Without dead ends: 42453 [2022-11-19 07:46:52,597 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 [2022-11-19 07:46:52,598 INFO L413 NwaCegarLoop]: 4431 mSDtfsCounter, 2461 mSDsluCounter, 2342 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 9 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2461 SdHoareTripleChecker+Valid, 6773 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:46:52,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2461 Valid, 6773 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 745 Invalid, 4 Unknown, 0 Unchecked, 13.5s Time] [2022-11-19 07:46:52,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42453 states. [2022-11-19 07:46:54,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42453 to 42443. [2022-11-19 07:46:54,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42443 states, 23199 states have (on average 1.3016078279236174) internal successors, (30196), 24307 states have internal predecessors, (30196), 16068 states have call successors, (16068), 3176 states have call predecessors, (16068), 3175 states have return successors, (16648), 15679 states have call predecessors, (16648), 16067 states have call successors, (16648) [2022-11-19 07:46:54,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42443 states to 42443 states and 62912 transitions. [2022-11-19 07:46:54,579 INFO L78 Accepts]: Start accepts. Automaton has 42443 states and 62912 transitions. Word has length 214 [2022-11-19 07:46:54,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:46:54,579 INFO L495 AbstractCegarLoop]: Abstraction has 42443 states and 62912 transitions. [2022-11-19 07:46:54,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-19 07:46:54,580 INFO L276 IsEmpty]: Start isEmpty. Operand 42443 states and 62912 transitions. [2022-11-19 07:46:54,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-11-19 07:46:54,670 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:46:54,671 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:46:54,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 07:46:54,671 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:46:54,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:46:54,672 INFO L85 PathProgramCache]: Analyzing trace with hash 638053431, now seen corresponding path program 1 times [2022-11-19 07:46:54,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:46:54,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717584585] [2022-11-19 07:46:54,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:46:54,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:46:54,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:46:55,278 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-19 07:46:55,278 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:46:55,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717584585] [2022-11-19 07:46:55,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717584585] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:46:55,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:46:55,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:46:55,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003577840] [2022-11-19 07:46:55,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:46:55,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:46:55,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:46:55,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:46:55,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:46:55,280 INFO L87 Difference]: Start difference. First operand 42443 states and 62912 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-19 07:46:57,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:47:00,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:47:02,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:47:04,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:47:11,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:47:11,432 INFO L93 Difference]: Finished difference Result 102595 states and 152279 transitions. [2022-11-19 07:47:11,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:47:11,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 183 [2022-11-19 07:47:11,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:47:11,965 INFO L225 Difference]: With dead ends: 102595 [2022-11-19 07:47:11,966 INFO L226 Difference]: Without dead ends: 60171 [2022-11-19 07:47:12,151 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 [2022-11-19 07:47:12,152 INFO L413 NwaCegarLoop]: 3708 mSDtfsCounter, 2374 mSDsluCounter, 2312 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 4 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2374 SdHoareTripleChecker+Valid, 6020 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:47:12,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2374 Valid, 6020 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 690 Invalid, 4 Unknown, 0 Unchecked, 13.4s Time] [2022-11-19 07:47:12,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60171 states. [2022-11-19 07:47:14,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60171 to 60105. [2022-11-19 07:47:14,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60105 states, 32648 states have (on average 1.2951176182308257) internal successors, (42283), 34262 states have internal predecessors, (42283), 22874 states have call successors, (22874), 4583 states have call predecessors, (22874), 4582 states have return successors, (24148), 22298 states have call predecessors, (24148), 22873 states have call successors, (24148) [2022-11-19 07:47:15,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60105 states to 60105 states and 89305 transitions. [2022-11-19 07:47:15,026 INFO L78 Accepts]: Start accepts. Automaton has 60105 states and 89305 transitions. Word has length 183 [2022-11-19 07:47:15,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:47:15,027 INFO L495 AbstractCegarLoop]: Abstraction has 60105 states and 89305 transitions. [2022-11-19 07:47:15,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-19 07:47:15,027 INFO L276 IsEmpty]: Start isEmpty. Operand 60105 states and 89305 transitions. [2022-11-19 07:47:15,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-11-19 07:47:15,086 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:47:15,086 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:47:15,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 07:47:15,086 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:47:15,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:47:15,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1330619534, now seen corresponding path program 1 times [2022-11-19 07:47:15,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:47:15,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581265707] [2022-11-19 07:47:15,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:47:15,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:47:15,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:47:17,627 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2022-11-19 07:47:17,627 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:47:17,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581265707] [2022-11-19 07:47:17,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581265707] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:47:17,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:47:17,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:47:17,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349857598] [2022-11-19 07:47:17,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:47:17,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:47:17,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:47:17,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:47:17,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:47:17,629 INFO L87 Difference]: Start difference. First operand 60105 states and 89305 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 4 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-19 07:47:19,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:47:22,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:47:24,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:47:26,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:47:28,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:47:32,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:47:35,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:47:37,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:47:39,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:48:14,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:48:14,139 INFO L93 Difference]: Finished difference Result 85599 states and 127715 transitions. [2022-11-19 07:48:14,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:48:14,140 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 4 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 187 [2022-11-19 07:48:14,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:48:14,832 INFO L225 Difference]: With dead ends: 85599 [2022-11-19 07:48:14,833 INFO L226 Difference]: Without dead ends: 85593 [2022-11-19 07:48:14,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:48:14,878 INFO L413 NwaCegarLoop]: 1854 mSDtfsCounter, 3188 mSDsluCounter, 3194 mSDsCounter, 0 mSdLazyCounter, 6726 mSolverCounterSat, 2796 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3802 SdHoareTripleChecker+Valid, 5048 SdHoareTripleChecker+Invalid, 9530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2796 IncrementalHoareTripleChecker+Valid, 6726 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:48:14,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3802 Valid, 5048 Invalid, 9530 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2796 Valid, 6726 Invalid, 8 Unknown, 0 Unchecked, 52.0s Time] [2022-11-19 07:48:14,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85593 states. [2022-11-19 07:48:19,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85593 to 85539. [2022-11-19 07:48:19,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85539 states, 46550 states have (on average 1.2925671321160044) internal successors, (60169), 48788 states have internal predecessors, (60169), 32511 states have call successors, (32511), 6316 states have call predecessors, (32511), 6477 states have return successors, (34948), 31920 states have call predecessors, (34948), 32510 states have call successors, (34948) [2022-11-19 07:48:20,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85539 states to 85539 states and 127628 transitions. [2022-11-19 07:48:20,293 INFO L78 Accepts]: Start accepts. Automaton has 85539 states and 127628 transitions. Word has length 187 [2022-11-19 07:48:20,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:48:20,294 INFO L495 AbstractCegarLoop]: Abstraction has 85539 states and 127628 transitions. [2022-11-19 07:48:20,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 4 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-19 07:48:20,294 INFO L276 IsEmpty]: Start isEmpty. Operand 85539 states and 127628 transitions. [2022-11-19 07:48:20,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-11-19 07:48:20,347 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:48:20,347 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:48:20,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 07:48:20,347 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:48:20,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:48:20,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1732931328, now seen corresponding path program 1 times [2022-11-19 07:48:20,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:48:20,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091769850] [2022-11-19 07:48:20,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:48:20,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:48:21,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:48:22,414 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2022-11-19 07:48:22,414 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:48:22,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091769850] [2022-11-19 07:48:22,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091769850] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:48:22,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:48:22,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:48:22,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086691745] [2022-11-19 07:48:22,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:48:22,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:48:22,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:48:22,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:48:22,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:48:22,417 INFO L87 Difference]: Start difference. First operand 85539 states and 127628 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (34), 3 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-19 07:48:24,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:48:27,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:48:29,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:48:32,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:48:42,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:48:42,217 INFO L93 Difference]: Finished difference Result 171375 states and 259384 transitions. [2022-11-19 07:48:42,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:48:42,218 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (34), 3 states have call predecessors, (34), 2 states have call successors, (34) Word has length 221 [2022-11-19 07:48:42,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:48:43,204 INFO L225 Difference]: With dead ends: 171375 [2022-11-19 07:48:43,204 INFO L226 Difference]: Without dead ends: 85875 [2022-11-19 07:48:43,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:48:43,939 INFO L413 NwaCegarLoop]: 2376 mSDtfsCounter, 2 mSDsluCounter, 7109 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 9485 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:48:43,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 9485 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1061 Invalid, 4 Unknown, 0 Unchecked, 14.6s Time] [2022-11-19 07:48:44,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85875 states. [2022-11-19 07:48:48,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85875 to 85747. [2022-11-19 07:48:48,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85747 states, 46706 states have (on average 1.2915899456172655) internal successors, (60325), 48944 states have internal predecessors, (60325), 32511 states have call successors, (32511), 6316 states have call predecessors, (32511), 6529 states have return successors, (35034), 31972 states have call predecessors, (35034), 32510 states have call successors, (35034) [2022-11-19 07:48:49,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85747 states to 85747 states and 127870 transitions. [2022-11-19 07:48:49,267 INFO L78 Accepts]: Start accepts. Automaton has 85747 states and 127870 transitions. Word has length 221 [2022-11-19 07:48:49,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:48:49,273 INFO L495 AbstractCegarLoop]: Abstraction has 85747 states and 127870 transitions. [2022-11-19 07:48:49,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (34), 3 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-19 07:48:49,274 INFO L276 IsEmpty]: Start isEmpty. Operand 85747 states and 127870 transitions. [2022-11-19 07:48:49,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-11-19 07:48:49,405 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:48:49,405 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:48:49,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-19 07:48:49,406 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:48:49,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:48:49,406 INFO L85 PathProgramCache]: Analyzing trace with hash 2016373945, now seen corresponding path program 1 times [2022-11-19 07:48:49,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:48:49,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300214280] [2022-11-19 07:48:49,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:48:49,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms