./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc07035-d68d-4658-88d6-c199bd2bb435/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc07035-d68d-4658-88d6-c199bd2bb435/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc07035-d68d-4658-88d6-c199bd2bb435/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc07035-d68d-4658-88d6-c199bd2bb435/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc07035-d68d-4658-88d6-c199bd2bb435/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc07035-d68d-4658-88d6-c199bd2bb435/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2c13f17bef293e22dbc8fc00ce80e620ba1259ce3bd9f704a30527baafc650b9 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 01:50:42,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:50:42,051 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:50:42,096 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:50:42,096 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:50:42,100 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:50:42,102 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:50:42,106 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:50:42,109 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:50:42,117 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:50:42,118 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:50:42,119 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:50:42,120 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:50:42,121 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:50:42,122 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:50:42,123 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:50:42,123 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:50:42,124 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:50:42,126 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:50:42,127 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:50:42,129 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:50:42,133 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:50:42,137 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:50:42,138 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:50:42,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:50:42,152 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:50:42,153 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:50:42,153 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:50:42,154 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:50:42,155 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:50:42,155 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:50:42,156 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:50:42,157 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:50:42,157 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:50:42,158 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:50:42,159 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:50:42,159 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:50:42,160 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:50:42,160 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:50:42,161 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:50:42,161 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:50:42,166 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc07035-d68d-4658-88d6-c199bd2bb435/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 01:50:42,211 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:50:42,212 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:50:42,212 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:50:42,212 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:50:42,213 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:50:42,214 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:50:42,214 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:50:42,214 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:50:42,214 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:50:42,214 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:50:42,216 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:50:42,216 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:50:42,216 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:50:42,216 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:50:42,216 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:50:42,217 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:50:42,217 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:50:42,217 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:50:42,218 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:50:42,218 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:50:42,218 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:50:42,218 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:50:42,218 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:50:42,219 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:50:42,219 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:50:42,219 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:50:42,219 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:50:42,219 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:50:42,220 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:50:42,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:50:42,220 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:50:42,221 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:50:42,221 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:50:42,221 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:50:42,221 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:50:42,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:50:42,230 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:50:42,231 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:50:42,231 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_afc07035-d68d-4658-88d6-c199bd2bb435/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc07035-d68d-4658-88d6-c199bd2bb435/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c13f17bef293e22dbc8fc00ce80e620ba1259ce3bd9f704a30527baafc650b9 [2022-11-03 01:50:42,594 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:50:42,628 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:50:42,630 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:50:42,632 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:50:42,633 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:50:42,634 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc07035-d68d-4658-88d6-c199bd2bb435/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.i [2022-11-03 01:50:42,703 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc07035-d68d-4658-88d6-c199bd2bb435/bin/utaipan-7li7fVZpFI/data/5d81f7eea/de9685aa5f5a4c738882ab11e01613e6/FLAG1bf8f85c5 [2022-11-03 01:50:43,690 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:50:43,692 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc07035-d68d-4658-88d6-c199bd2bb435/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.i [2022-11-03 01:50:43,749 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc07035-d68d-4658-88d6-c199bd2bb435/bin/utaipan-7li7fVZpFI/data/5d81f7eea/de9685aa5f5a4c738882ab11e01613e6/FLAG1bf8f85c5 [2022-11-03 01:50:44,038 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc07035-d68d-4658-88d6-c199bd2bb435/bin/utaipan-7li7fVZpFI/data/5d81f7eea/de9685aa5f5a4c738882ab11e01613e6 [2022-11-03 01:50:44,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:50:44,042 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:50:44,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:50:44,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:50:44,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:50:44,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:50:44" (1/1) ... [2022-11-03 01:50:44,049 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ad08f75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:44, skipping insertion in model container [2022-11-03 01:50:44,049 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:50:44" (1/1) ... [2022-11-03 01:50:44,057 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:50:44,236 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:50:46,650 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc07035-d68d-4658-88d6-c199bd2bb435/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.i[299705,299718] [2022-11-03 01:50:46,727 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:50:46,837 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:50:47,350 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc07035-d68d-4658-88d6-c199bd2bb435/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.i[299705,299718] [2022-11-03 01:50:47,358 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:50:47,531 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:50:47,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:47 WrapperNode [2022-11-03 01:50:47,532 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:50:47,533 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:50:47,534 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:50:47,534 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:50:47,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:47" (1/1) ... [2022-11-03 01:50:47,692 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:47" (1/1) ... [2022-11-03 01:50:47,900 INFO L138 Inliner]: procedures = 314, calls = 3825, calls flagged for inlining = 118, calls inlined = 83, statements flattened = 4704 [2022-11-03 01:50:47,900 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:50:47,901 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:50:47,902 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:50:47,902 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:50:47,913 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:47" (1/1) ... [2022-11-03 01:50:47,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:47" (1/1) ... [2022-11-03 01:50:47,990 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:47" (1/1) ... [2022-11-03 01:50:48,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:47" (1/1) ... [2022-11-03 01:50:48,154 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:47" (1/1) ... [2022-11-03 01:50:48,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:47" (1/1) ... [2022-11-03 01:50:48,209 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:47" (1/1) ... [2022-11-03 01:50:48,228 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:47" (1/1) ... [2022-11-03 01:50:48,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:50:48,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:50:48,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:50:48,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:50:48,265 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:47" (1/1) ... [2022-11-03 01:50:48,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:50:48,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc07035-d68d-4658-88d6-c199bd2bb435/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:50:48,300 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc07035-d68d-4658-88d6-c199bd2bb435/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:50:48,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc07035-d68d-4658-88d6-c199bd2bb435/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:50:48,352 INFO L130 BoogieDeclarations]: Found specification of procedure __cmpxchg_wrong_size [2022-11-03 01:50:48,353 INFO L130 BoogieDeclarations]: Found specification of procedure smi_stats_proc_open [2022-11-03 01:50:48,353 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_stats_proc_open [2022-11-03 01:50:48,353 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-11-03 01:50:48,353 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-11-03 01:50:48,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 01:50:48,354 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_smi_msg_received [2022-11-03 01:50:48,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_smi_msg_received [2022-11-03 01:50:48,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 01:50:48,354 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 01:50:48,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 01:50:48,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 01:50:48,355 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 01:50:48,355 INFO L130 BoogieDeclarations]: Found specification of procedure intf_find_seq [2022-11-03 01:50:48,355 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_find_seq [2022-11-03 01:50:48,355 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-03 01:50:48,355 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-03 01:50:48,356 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-03 01:50:48,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-03 01:50:48,356 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 01:50:48,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 01:50:48,356 INFO L130 BoogieDeclarations]: Found specification of procedure handle_read_event_rsp [2022-11-03 01:50:48,356 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_read_event_rsp [2022-11-03 01:50:48,357 INFO L130 BoogieDeclarations]: Found specification of procedure seq_read [2022-11-03 01:50:48,357 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_read [2022-11-03 01:50:48,357 INFO L130 BoogieDeclarations]: Found specification of procedure handle_ipmb_get_msg_cmd [2022-11-03 01:50:48,357 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_ipmb_get_msg_cmd [2022-11-03 01:50:48,357 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~bool~0~TO~VOID [2022-11-03 01:50:48,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~bool~0~TO~VOID [2022-11-03 01:50:48,358 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_poll [2022-11-03 01:50:48,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_poll [2022-11-03 01:50:48,358 INFO L130 BoogieDeclarations]: Found specification of procedure handle_lan_get_msg_cmd [2022-11-03 01:50:48,358 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_lan_get_msg_cmd [2022-11-03 01:50:48,358 INFO L130 BoogieDeclarations]: Found specification of procedure handle_bmc_rsp [2022-11-03 01:50:48,359 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_bmc_rsp [2022-11-03 01:50:48,359 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 01:50:48,359 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 01:50:48,360 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 01:50:48,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 01:50:48,360 INFO L130 BoogieDeclarations]: Found specification of procedure __write_once_size [2022-11-03 01:50:48,360 INFO L138 BoogieDeclarations]: Found implementation of procedure __write_once_size [2022-11-03 01:50:48,360 INFO L130 BoogieDeclarations]: Found specification of procedure format_lan_msg [2022-11-03 01:50:48,360 INFO L138 BoogieDeclarations]: Found implementation of procedure format_lan_msg [2022-11-03 01:50:48,361 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-03 01:50:48,361 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-03 01:50:48,361 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 01:50:48,362 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 01:50:48,362 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_free_smi_msg [2022-11-03 01:50:48,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_free_smi_msg [2022-11-03 01:50:48,363 INFO L130 BoogieDeclarations]: Found specification of procedure copy_event_into_recv_msg [2022-11-03 01:50:48,364 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_event_into_recv_msg [2022-11-03 01:50:48,364 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_panic_request_and_wait [2022-11-03 01:50:48,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_panic_request_and_wait [2022-11-03 01:50:48,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2022-11-03 01:50:48,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2022-11-03 01:50:48,364 INFO L130 BoogieDeclarations]: Found specification of procedure handle_oem_get_msg_cmd [2022-11-03 01:50:48,365 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_oem_get_msg_cmd [2022-11-03 01:50:48,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 01:50:48,365 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 01:50:48,366 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 01:50:48,366 INFO L130 BoogieDeclarations]: Found specification of procedure proc_mkdir [2022-11-03 01:50:48,366 INFO L138 BoogieDeclarations]: Found implementation of procedure proc_mkdir [2022-11-03 01:50:48,366 INFO L130 BoogieDeclarations]: Found specification of procedure need_waiter [2022-11-03 01:50:48,366 INFO L138 BoogieDeclarations]: Found implementation of procedure need_waiter [2022-11-03 01:50:48,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 01:50:48,367 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-11-03 01:50:48,367 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 01:50:48,367 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 01:50:48,367 INFO L130 BoogieDeclarations]: Found specification of procedure smi_send [2022-11-03 01:50:48,367 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_send [2022-11-03 01:50:48,368 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2022-11-03 01:50:48,369 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2022-11-03 01:50:48,369 INFO L130 BoogieDeclarations]: Found specification of procedure smi_add_send_msg [2022-11-03 01:50:48,369 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_add_send_msg [2022-11-03 01:50:48,369 INFO L130 BoogieDeclarations]: Found specification of procedure intf_next_seq [2022-11-03 01:50:48,369 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_next_seq [2022-11-03 01:50:48,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 01:50:48,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 01:50:48,370 INFO L130 BoogieDeclarations]: Found specification of procedure find_cmd_rcvr [2022-11-03 01:50:48,370 INFO L138 BoogieDeclarations]: Found implementation of procedure find_cmd_rcvr [2022-11-03 01:50:48,370 INFO L130 BoogieDeclarations]: Found specification of procedure PDE_DATA [2022-11-03 01:50:48,370 INFO L138 BoogieDeclarations]: Found implementation of procedure PDE_DATA [2022-11-03 01:50:48,371 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-03 01:50:48,371 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-03 01:50:48,372 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 01:50:48,372 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 01:50:48,372 INFO L130 BoogieDeclarations]: Found specification of procedure i_ipmi_request [2022-11-03 01:50:48,372 INFO L138 BoogieDeclarations]: Found implementation of procedure i_ipmi_request [2022-11-03 01:50:48,373 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_init_msghandler [2022-11-03 01:50:48,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_init_msghandler [2022-11-03 01:50:48,373 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-03 01:50:48,374 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-03 01:50:48,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 01:50:48,375 INFO L130 BoogieDeclarations]: Found specification of procedure free_smi_msg_list [2022-11-03 01:50:48,375 INFO L138 BoogieDeclarations]: Found implementation of procedure free_smi_msg_list [2022-11-03 01:50:48,375 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-03 01:50:48,376 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-03 01:50:48,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 01:50:48,376 INFO L130 BoogieDeclarations]: Found specification of procedure clean_up_interface_data [2022-11-03 01:50:48,376 INFO L138 BoogieDeclarations]: Found implementation of procedure clean_up_interface_data [2022-11-03 01:50:48,376 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~ipmi_smi_t~0~X~$Pointer$~TO~VOID [2022-11-03 01:50:48,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~ipmi_smi_t~0~X~$Pointer$~TO~VOID [2022-11-03 01:50:48,377 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2022-11-03 01:50:48,377 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2022-11-03 01:50:48,377 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2022-11-03 01:50:48,378 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2022-11-03 01:50:48,378 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_alloc_recv_msg [2022-11-03 01:50:48,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_alloc_recv_msg [2022-11-03 01:50:48,378 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 01:50:48,379 INFO L130 BoogieDeclarations]: Found specification of procedure handle_ipmb_get_msg_rsp [2022-11-03 01:50:48,380 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_ipmb_get_msg_rsp [2022-11-03 01:50:48,382 INFO L130 BoogieDeclarations]: Found specification of procedure deliver_err_response [2022-11-03 01:50:48,383 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver_err_response [2022-11-03 01:50:48,383 INFO L130 BoogieDeclarations]: Found specification of procedure single_open [2022-11-03 01:50:48,383 INFO L138 BoogieDeclarations]: Found implementation of procedure single_open [2022-11-03 01:50:48,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 01:50:48,386 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 01:50:48,386 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2022-11-03 01:50:48,386 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2022-11-03 01:50:48,386 INFO L130 BoogieDeclarations]: Found specification of procedure synchronize_rcu [2022-11-03 01:50:48,392 INFO L138 BoogieDeclarations]: Found implementation of procedure synchronize_rcu [2022-11-03 01:50:48,392 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2022-11-03 01:50:48,392 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2022-11-03 01:50:48,393 INFO L130 BoogieDeclarations]: Found specification of procedure smi_ipmb_proc_open [2022-11-03 01:50:48,393 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_ipmb_proc_open [2022-11-03 01:50:48,393 INFO L130 BoogieDeclarations]: Found specification of procedure maintenance_mode_update [2022-11-03 01:50:48,393 INFO L138 BoogieDeclarations]: Found implementation of procedure maintenance_mode_update [2022-11-03 01:50:48,393 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 01:50:48,393 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 01:50:48,394 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-03 01:50:48,394 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-03 01:50:48,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 01:50:48,394 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2022-11-03 01:50:48,394 INFO L138 BoogieDeclarations]: Found implementation of procedure single_release [2022-11-03 01:50:48,394 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-11-03 01:50:48,394 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-11-03 01:50:48,395 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 01:50:48,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 01:50:48,395 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2022-11-03 01:50:48,395 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2022-11-03 01:50:48,395 INFO L130 BoogieDeclarations]: Found specification of procedure is_ipmb_addr [2022-11-03 01:50:48,395 INFO L138 BoogieDeclarations]: Found implementation of procedure is_ipmb_addr [2022-11-03 01:50:48,395 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock [2022-11-03 01:50:48,396 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock [2022-11-03 01:50:48,396 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 01:50:48,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 01:50:48,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 01:50:48,396 INFO L130 BoogieDeclarations]: Found specification of procedure handle_lan_get_msg_rsp [2022-11-03 01:50:48,396 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_lan_get_msg_rsp [2022-11-03 01:50:48,397 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 01:50:48,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 01:50:48,397 INFO L130 BoogieDeclarations]: Found specification of procedure smi_version_proc_open [2022-11-03 01:50:48,397 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_version_proc_open [2022-11-03 01:50:48,397 INFO L130 BoogieDeclarations]: Found specification of procedure seq_lseek [2022-11-03 01:50:48,397 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_lseek [2022-11-03 01:50:48,397 INFO L130 BoogieDeclarations]: Found specification of procedure is_ipmb_bcast_addr [2022-11-03 01:50:48,398 INFO L138 BoogieDeclarations]: Found implementation of procedure is_ipmb_bcast_addr [2022-11-03 01:50:48,398 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-11-03 01:50:48,398 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-11-03 01:50:48,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:50:48,398 INFO L130 BoogieDeclarations]: Found specification of procedure send_channel_info_cmd [2022-11-03 01:50:48,398 INFO L138 BoogieDeclarations]: Found implementation of procedure send_channel_info_cmd [2022-11-03 01:50:48,399 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-11-03 01:50:48,399 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-11-03 01:50:48,399 INFO L130 BoogieDeclarations]: Found specification of procedure format_ipmb_msg [2022-11-03 01:50:48,399 INFO L138 BoogieDeclarations]: Found implementation of procedure format_ipmb_msg [2022-11-03 01:50:48,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 01:50:48,399 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2022-11-03 01:50:48,399 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2022-11-03 01:50:48,400 INFO L130 BoogieDeclarations]: Found specification of procedure free_recv_msg_list [2022-11-03 01:50:48,400 INFO L138 BoogieDeclarations]: Found implementation of procedure free_recv_msg_list [2022-11-03 01:50:48,400 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 01:50:48,400 INFO L130 BoogieDeclarations]: Found specification of procedure handle_one_recv_msg [2022-11-03 01:50:48,400 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_one_recv_msg [2022-11-03 01:50:48,400 INFO L130 BoogieDeclarations]: Found specification of procedure intf_err_seq [2022-11-03 01:50:48,400 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_err_seq [2022-11-03 01:50:48,401 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 01:50:48,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 01:50:48,401 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2022-11-03 01:50:48,401 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2022-11-03 01:50:48,401 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-11-03 01:50:48,401 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-11-03 01:50:48,402 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-03 01:50:48,402 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-03 01:50:48,402 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_timeout [2022-11-03 01:50:48,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_timeout [2022-11-03 01:50:48,402 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_alloc_smi_msg [2022-11-03 01:50:48,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_alloc_smi_msg [2022-11-03 01:50:48,402 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-03 01:50:48,403 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-03 01:50:48,403 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add_return [2022-11-03 01:50:48,403 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add_return [2022-11-03 01:50:48,403 INFO L130 BoogieDeclarations]: Found specification of procedure handle_new_recv_msgs [2022-11-03 01:50:48,403 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_new_recv_msgs [2022-11-03 01:50:48,403 INFO L130 BoogieDeclarations]: Found specification of procedure is_lan_addr [2022-11-03 01:50:48,403 INFO L138 BoogieDeclarations]: Found implementation of procedure is_lan_addr [2022-11-03 01:50:48,404 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 01:50:48,404 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 01:50:48,404 INFO L130 BoogieDeclarations]: Found specification of procedure intf_free [2022-11-03 01:50:48,404 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_free [2022-11-03 01:50:48,404 INFO L130 BoogieDeclarations]: Found specification of procedure smi_recv_tasklet [2022-11-03 01:50:48,404 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_recv_tasklet [2022-11-03 01:50:48,405 INFO L130 BoogieDeclarations]: Found specification of procedure ipmb_checksum [2022-11-03 01:50:48,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmb_checksum [2022-11-03 01:50:48,405 INFO L130 BoogieDeclarations]: Found specification of procedure deliver_response [2022-11-03 01:50:48,405 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver_response [2022-11-03 01:50:48,405 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock [2022-11-03 01:50:48,405 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock [2022-11-03 01:50:48,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:50:48,406 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-11-03 01:50:48,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-11-03 01:50:48,406 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_free_recv_msg [2022-11-03 01:50:48,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_free_recv_msg [2022-11-03 01:50:48,406 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-11-03 01:50:48,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:50:48,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:50:49,472 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:50:49,476 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:50:50,159 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 01:51:02,152 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:51:03,541 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:51:03,541 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 01:51:03,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:51:03 BoogieIcfgContainer [2022-11-03 01:51:03,547 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:51:03,551 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:51:03,551 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:51:03,554 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:51:03,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:50:44" (1/3) ... [2022-11-03 01:51:03,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1745859b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:51:03, skipping insertion in model container [2022-11-03 01:51:03,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:47" (2/3) ... [2022-11-03 01:51:03,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1745859b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:51:03, skipping insertion in model container [2022-11-03 01:51:03,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:51:03" (3/3) ... [2022-11-03 01:51:03,558 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.i [2022-11-03 01:51:03,578 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:51:03,579 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:51:03,704 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:51:03,713 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;@68be8797, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:51:03,715 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:51:03,731 INFO L276 IsEmpty]: Start isEmpty. Operand has 1401 states, 854 states have (on average 1.3934426229508197) internal successors, (1190), 946 states have internal predecessors, (1190), 448 states have call successors, (448), 98 states have call predecessors, (448), 97 states have return successors, (430), 408 states have call predecessors, (430), 430 states have call successors, (430) [2022-11-03 01:51:03,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2022-11-03 01:51:03,773 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:03,774 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 40, 40, 40, 40, 40, 11, 11, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:03,775 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:03,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:03,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1145873869, now seen corresponding path program 1 times [2022-11-03 01:51:03,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:51:03,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920204588] [2022-11-03 01:51:03,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:03,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:51:04,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:05,917 INFO L134 CoverageAnalysis]: Checked inductivity of 7971 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7971 trivial. 0 not checked. [2022-11-03 01:51:05,917 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:51:05,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920204588] [2022-11-03 01:51:05,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920204588] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:05,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:51:05,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:51:05,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616685869] [2022-11-03 01:51:05,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:05,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:51:05,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:51:05,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:51:05,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:51:05,976 INFO L87 Difference]: Start difference. First operand has 1401 states, 854 states have (on average 1.3934426229508197) internal successors, (1190), 946 states have internal predecessors, (1190), 448 states have call successors, (448), 98 states have call predecessors, (448), 97 states have return successors, (430), 408 states have call predecessors, (430), 430 states have call successors, (430) Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2022-11-03 01:51:08,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:51:11,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:11,130 INFO L93 Difference]: Finished difference Result 3916 states and 5868 transitions. [2022-11-03 01:51:11,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:51:11,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) Word has length 583 [2022-11-03 01:51:11,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:11,175 INFO L225 Difference]: With dead ends: 3916 [2022-11-03 01:51:11,176 INFO L226 Difference]: Without dead ends: 2560 [2022-11-03 01:51:11,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:51:11,193 INFO L413 NwaCegarLoop]: 2256 mSDtfsCounter, 1792 mSDsluCounter, 2058 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1792 SdHoareTripleChecker+Valid, 4149 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:11,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1792 Valid, 4149 Invalid, 343 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 341 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2022-11-03 01:51:11,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2560 states. [2022-11-03 01:51:11,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2560 to 2556. [2022-11-03 01:51:11,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2556 states, 1589 states have (on average 1.3838892385147892) internal successors, (2199), 1730 states have internal predecessors, (2199), 777 states have call successors, (777), 190 states have call predecessors, (777), 189 states have return successors, (776), 731 states have call predecessors, (776), 776 states have call successors, (776) [2022-11-03 01:51:11,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2556 states to 2556 states and 3752 transitions. [2022-11-03 01:51:11,510 INFO L78 Accepts]: Start accepts. Automaton has 2556 states and 3752 transitions. Word has length 583 [2022-11-03 01:51:11,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:11,521 INFO L495 AbstractCegarLoop]: Abstraction has 2556 states and 3752 transitions. [2022-11-03 01:51:11,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2022-11-03 01:51:11,522 INFO L276 IsEmpty]: Start isEmpty. Operand 2556 states and 3752 transitions. [2022-11-03 01:51:11,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 600 [2022-11-03 01:51:11,549 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:11,550 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 40, 40, 40, 40, 40, 11, 11, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:11,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:51:11,551 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:11,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:11,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1322664644, now seen corresponding path program 1 times [2022-11-03 01:51:11,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:51:11,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094950433] [2022-11-03 01:51:11,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:11,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:51:11,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:13,308 INFO L134 CoverageAnalysis]: Checked inductivity of 7969 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7969 trivial. 0 not checked. [2022-11-03 01:51:13,308 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:51:13,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094950433] [2022-11-03 01:51:13,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094950433] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:13,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:51:13,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:51:13,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002079882] [2022-11-03 01:51:13,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:13,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:51:13,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:51:13,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:51:13,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:51:13,315 INFO L87 Difference]: Start difference. First operand 2556 states and 3752 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2022-11-03 01:51:15,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:51:17,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:51:25,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:25,219 INFO L93 Difference]: Finished difference Result 9898 states and 14693 transitions. [2022-11-03 01:51:25,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:51:25,220 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 599 [2022-11-03 01:51:25,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:25,278 INFO L225 Difference]: With dead ends: 9898 [2022-11-03 01:51:25,278 INFO L226 Difference]: Without dead ends: 7448 [2022-11-03 01:51:25,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:51:25,293 INFO L413 NwaCegarLoop]: 2712 mSDtfsCounter, 3848 mSDsluCounter, 3856 mSDsCounter, 0 mSdLazyCounter, 1453 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3848 SdHoareTripleChecker+Valid, 6206 SdHoareTripleChecker+Invalid, 1459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1453 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:25,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3848 Valid, 6206 Invalid, 1459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1453 Invalid, 1 Unknown, 0 Unchecked, 11.4s Time] [2022-11-03 01:51:25,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7448 states. [2022-11-03 01:51:25,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7448 to 7430. [2022-11-03 01:51:25,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7430 states, 4653 states have (on average 1.3915753277455405) internal successors, (6475), 5064 states have internal predecessors, (6475), 2215 states have call successors, (2215), 562 states have call predecessors, (2215), 561 states have return successors, (2378), 2083 states have call predecessors, (2378), 2214 states have call successors, (2378) [2022-11-03 01:51:25,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7430 states to 7430 states and 11068 transitions. [2022-11-03 01:51:25,743 INFO L78 Accepts]: Start accepts. Automaton has 7430 states and 11068 transitions. Word has length 599 [2022-11-03 01:51:25,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:25,746 INFO L495 AbstractCegarLoop]: Abstraction has 7430 states and 11068 transitions. [2022-11-03 01:51:25,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2022-11-03 01:51:25,747 INFO L276 IsEmpty]: Start isEmpty. Operand 7430 states and 11068 transitions. [2022-11-03 01:51:25,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2022-11-03 01:51:25,755 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:25,755 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 40, 40, 40, 40, 40, 11, 11, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:25,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:51:25,759 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:25,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:25,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1208262060, now seen corresponding path program 1 times [2022-11-03 01:51:25,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:51:25,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627715008] [2022-11-03 01:51:25,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:25,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:51:26,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:27,075 INFO L134 CoverageAnalysis]: Checked inductivity of 7969 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7969 trivial. 0 not checked. [2022-11-03 01:51:27,076 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:51:27,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627715008] [2022-11-03 01:51:27,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627715008] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:27,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:51:27,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:51:27,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917625096] [2022-11-03 01:51:27,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:27,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:51:27,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:51:27,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:51:27,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:51:27,082 INFO L87 Difference]: Start difference. First operand 7430 states and 11068 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2022-11-03 01:51:29,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:51:36,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:36,762 INFO L93 Difference]: Finished difference Result 29386 states and 44577 transitions. [2022-11-03 01:51:36,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:51:36,763 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 600 [2022-11-03 01:51:36,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:36,934 INFO L225 Difference]: With dead ends: 29386 [2022-11-03 01:51:36,934 INFO L226 Difference]: Without dead ends: 22062 [2022-11-03 01:51:37,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:51:37,068 INFO L413 NwaCegarLoop]: 2597 mSDtfsCounter, 4785 mSDsluCounter, 3195 mSDsCounter, 0 mSdLazyCounter, 1237 mSolverCounterSat, 749 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4785 SdHoareTripleChecker+Valid, 5476 SdHoareTripleChecker+Invalid, 1987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 749 IncrementalHoareTripleChecker+Valid, 1237 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:37,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4785 Valid, 5476 Invalid, 1987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [749 Valid, 1237 Invalid, 1 Unknown, 0 Unchecked, 8.6s Time] [2022-11-03 01:51:37,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22062 states. [2022-11-03 01:51:38,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22062 to 22044. [2022-11-03 01:51:38,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22044 states, 13845 states have (on average 1.3934994582881908) internal successors, (19293), 15058 states have internal predecessors, (19293), 6521 states have call successors, (6521), 1678 states have call predecessors, (6521), 1677 states have return successors, (7812), 6139 states have call predecessors, (7812), 6520 states have call successors, (7812) [2022-11-03 01:51:38,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22044 states to 22044 states and 33626 transitions. [2022-11-03 01:51:38,437 INFO L78 Accepts]: Start accepts. Automaton has 22044 states and 33626 transitions. Word has length 600 [2022-11-03 01:51:38,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:38,438 INFO L495 AbstractCegarLoop]: Abstraction has 22044 states and 33626 transitions. [2022-11-03 01:51:38,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2022-11-03 01:51:38,439 INFO L276 IsEmpty]: Start isEmpty. Operand 22044 states and 33626 transitions. [2022-11-03 01:51:38,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2022-11-03 01:51:38,446 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:38,448 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 40, 40, 40, 40, 40, 11, 11, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:38,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 01:51:38,449 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:38,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:38,450 INFO L85 PathProgramCache]: Analyzing trace with hash -748058884, now seen corresponding path program 1 times [2022-11-03 01:51:38,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:51:38,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234623001] [2022-11-03 01:51:38,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:38,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:51:38,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:39,751 INFO L134 CoverageAnalysis]: Checked inductivity of 7969 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7969 trivial. 0 not checked. [2022-11-03 01:51:39,751 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:51:39,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234623001] [2022-11-03 01:51:39,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234623001] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:39,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:51:39,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:51:39,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570600975] [2022-11-03 01:51:39,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:39,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:51:39,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:51:39,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:51:39,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:51:39,754 INFO L87 Difference]: Start difference. First operand 22044 states and 33626 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2022-11-03 01:51:41,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:51:51,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:51,399 INFO L93 Difference]: Finished difference Result 87818 states and 137421 transitions. [2022-11-03 01:51:51,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:51:51,400 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 601 [2022-11-03 01:51:51,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:52,063 INFO L225 Difference]: With dead ends: 87818 [2022-11-03 01:51:52,063 INFO L226 Difference]: Without dead ends: 65880 [2022-11-03 01:51:52,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:51:52,182 INFO L413 NwaCegarLoop]: 2597 mSDtfsCounter, 4933 mSDsluCounter, 3093 mSDsCounter, 0 mSdLazyCounter, 1341 mSolverCounterSat, 748 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4933 SdHoareTripleChecker+Valid, 5374 SdHoareTripleChecker+Invalid, 2089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 748 IncrementalHoareTripleChecker+Valid, 1341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:52,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4933 Valid, 5374 Invalid, 2089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [748 Valid, 1341 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2022-11-03 01:51:52,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65880 states. [2022-11-03 01:51:56,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65880 to 65862. [2022-11-03 01:51:56,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65862 states, 41421 states have (on average 1.3934719103836217) internal successors, (57719), 45016 states have internal predecessors, (57719), 19415 states have call successors, (19415), 5026 states have call predecessors, (19415), 5025 states have return successors, (26750), 18307 states have call predecessors, (26750), 19414 states have call successors, (26750) [2022-11-03 01:51:57,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65862 states to 65862 states and 103884 transitions. [2022-11-03 01:51:57,730 INFO L78 Accepts]: Start accepts. Automaton has 65862 states and 103884 transitions. Word has length 601 [2022-11-03 01:51:57,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:57,732 INFO L495 AbstractCegarLoop]: Abstraction has 65862 states and 103884 transitions. [2022-11-03 01:51:57,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2022-11-03 01:51:57,732 INFO L276 IsEmpty]: Start isEmpty. Operand 65862 states and 103884 transitions. [2022-11-03 01:51:57,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 603 [2022-11-03 01:51:57,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:57,740 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 40, 40, 40, 40, 40, 11, 11, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:57,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 01:51:57,740 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:57,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:57,741 INFO L85 PathProgramCache]: Analyzing trace with hash 325693156, now seen corresponding path program 1 times [2022-11-03 01:51:57,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:51:57,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066921744] [2022-11-03 01:51:57,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:57,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:51:58,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:59,221 INFO L134 CoverageAnalysis]: Checked inductivity of 7969 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7969 trivial. 0 not checked. [2022-11-03 01:51:59,221 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:51:59,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066921744] [2022-11-03 01:51:59,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066921744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:59,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:51:59,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:51:59,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766699160] [2022-11-03 01:51:59,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:59,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:51:59,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:51:59,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:51:59,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:51:59,225 INFO L87 Difference]: Start difference. First operand 65862 states and 103884 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2022-11-03 01:52:01,317 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 [] [2022-11-03 01:52:15,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:52:15,788 INFO L93 Difference]: Finished difference Result 261453 states and 427706 transitions. [2022-11-03 01:52:15,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:52:15,789 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 602 [2022-11-03 01:52:15,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:52:17,652 INFO L225 Difference]: With dead ends: 261453 [2022-11-03 01:52:17,653 INFO L226 Difference]: Without dead ends: 195697 [2022-11-03 01:52:17,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:52:17,974 INFO L413 NwaCegarLoop]: 2597 mSDtfsCounter, 4781 mSDsluCounter, 3195 mSDsCounter, 0 mSdLazyCounter, 1237 mSolverCounterSat, 749 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4781 SdHoareTripleChecker+Valid, 5476 SdHoareTripleChecker+Invalid, 1987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 749 IncrementalHoareTripleChecker+Valid, 1237 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:52:17,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4781 Valid, 5476 Invalid, 1987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [749 Valid, 1237 Invalid, 1 Unknown, 0 Unchecked, 8.9s Time] [2022-11-03 01:52:18,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195697 states. [2022-11-03 01:52:28,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195697 to 195571. [2022-11-03 01:52:29,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195571 states, 123083 states have (on average 1.3932062104433593) internal successors, (171480), 133772 states have internal predecessors, (171480), 57527 states have call successors, (57527), 14933 states have call predecessors, (57527), 14960 states have return successors, (94608), 54273 states have call predecessors, (94608), 57526 states have call successors, (94608) [2022-11-03 01:52:31,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195571 states to 195571 states and 323615 transitions. [2022-11-03 01:52:31,262 INFO L78 Accepts]: Start accepts. Automaton has 195571 states and 323615 transitions. Word has length 602 [2022-11-03 01:52:31,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:52:31,263 INFO L495 AbstractCegarLoop]: Abstraction has 195571 states and 323615 transitions. [2022-11-03 01:52:31,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2022-11-03 01:52:31,264 INFO L276 IsEmpty]: Start isEmpty. Operand 195571 states and 323615 transitions. [2022-11-03 01:52:31,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2022-11-03 01:52:31,297 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:52:31,297 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 40, 40, 40, 40, 40, 11, 11, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:52:31,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 01:52:31,298 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:52:31,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:52:31,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1647817270, now seen corresponding path program 1 times [2022-11-03 01:52:31,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:52:31,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113944445] [2022-11-03 01:52:31,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:31,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:52:31,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:32,804 INFO L134 CoverageAnalysis]: Checked inductivity of 7974 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 7969 trivial. 0 not checked. [2022-11-03 01:52:32,804 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:52:32,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113944445] [2022-11-03 01:52:32,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113944445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:52:32,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:52:32,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:52:32,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71922643] [2022-11-03 01:52:32,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:52:32,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:52:32,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:52:32,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:52:32,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:52:32,807 INFO L87 Difference]: Start difference. First operand 195571 states and 323615 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) [2022-11-03 01:52:34,888 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 []